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Index

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

☒			QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended October 01, 2022

OR

☐			TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from ______________ to ______________

Commission file number 000-11917

THE DAVEY TREE EXPERT COMPANY

(Exact name of registrant as specified in its charter)

Ohio									34-0176110
(State or other jurisdiction of incorporation or organization)									(I.R.S. Employer Identification Number)

1500 North Mantua Street

P.O. Box 5193

Kent, OH 44240

(Address of principal executive offices) (Zip code)

(330) 673-9511

(Registrant's telephone number, including area code)

Securities registered pursuant to Section 12(b) of the Act:

Title of each class

Trading Symbol(s)

Name of each exchange on which registered

N/A

N/A

N/A

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.  Yes ☒  No ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).  Yes ☒   No ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and "emerging growth company" in Rule 12b-2 of the Exchange Act.

Large Accelerated Filer

☐

Accelerated Filer

☐

Emerging Growth Company

☐

Non-Accelerated Filer

☒

Smaller Reporting Company

☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.  ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).  Yes ☐ No ☒

There were 42,921,611 Common Shares, $.50 par value, outstanding as of November 4, 2022. The registrant's Common Shares are not traded on a public market.

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Index

The Davey Tree Expert Company

Quarterly Report on Form 10-Q

October 1, 2022

INDEX

																					Page
Part I.			Financial Information
Item 1.			Financial Statements (Unaudited)
						Condensed Consolidated Balance Sheets															2
						Condensed Consolidated Statements of Operations															3
						Condensed Consolidated Statements of Comprehensive Income															4
						Condensed Consolidated Statements of Shareholders' Equity															5
						Condensed Consolidated Statements of Cash Flows															7
						Notes to Condensed Consolidated Financial Statements
									A			—			Basis of Financial Statement Preparation						8
									B			—			Seasonality of Business						9
									C			—			Accounts Receivable, Net and Supplemental Balance-Sheet Information						9
									D			—			Business Combinations						10
									E			—			Marketable Securities						12
									F			—			Identified Intangible Assets and Goodwill, Net						13
									G			—			Short and Long-Term Debt and Commitments Related to Letters of Credit						14
									H			—			Leases						17
									I			—			Stock-Based Compensation						18
									J			—			Income Taxes						21
									K			—			Accumulated Other Comprehensive Income (Loss)						22
									L			—			Per Share Amounts and Common and Redeemable Shares Outstanding						24
									M			—			Operations by Business Segment						25
									N			—			Revenue Recognition						28
									O			—			Fair Value Measurements and Financial Instruments						30
									P			—			Commitments and Contingencies						33
									Q			—			The Davey 401KSOP and Employee Stock Ownership Plan						35
Item 2.			Management's Discussion and Analysis of Financial Condition and Results of Operations																		37
						Results of Operations															38
						Liquidity and Capital Resources															43
									Cash Flow Summary												44
									Contractual Obligations Summary and Commercial Commitments												45
									Capital Resources												45
						Critical Accounting Policies and Estimates															45
						Note Regarding Forward-Looking Statements															46
Item 3.			Quantitative and Qualitative Disclosures about Market Risk																		47
Item 4.			Controls and Procedures																		47
Part II.			Other Information																		47
Item 1.			Legal Proceedings																		47
Item 1A.			Risk Factors																		49
Item 2.			Unregistered Sales of Equity Securities and Use of Proceeds																		50
Item 6.			Exhibits																		51
Exhibit Index																					52
Signatures																					53
"We," "us," "our," the "Company," "The Registrant," "Davey" and "Davey Tree," unless the context otherwise requires, means The Davey Tree Expert Company and its subsidiaries.

- 1 -

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Index

THE DAVEY TREE EXPERT COMPANY

CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited)

(In thousands, except per share data dollar amounts)

			October 1, 2022						December 31, 2021
Assets
Current assets:
Cash			$	22,844					$	19,460
Accounts receivable, net			326,291						278,280
Operating supplies			15,491						12,662
Other current assets			46,881						37,853
Total current assets			411,507						348,255
Property and equipment, net			262,701						227,985
Right-of-use assets - operating leases			95,350						86,423
Marketable securities and other investments			46,473						25,401
Other assets			14,304						17,264
Intangible assets, net			10,637						11,633
Goodwill			58,999						55,980
Total assets			$	899,971					$	772,941
Liabilities and shareholders' equity
Current liabilities:
Accounts payable			$	45,942					$	43,021
Accrued expenses			85,047						75,138
Current portion of long-term debt and finance lease liabilities			34,088						25,268
Other current liabilities			74,500						77,549
Total current liabilities			239,577						220,976
Long-term debt			174,579						123,531
Lease liabilities - finance leases			9,704						8,646
Lease liabilities - operating leases			62,586						57,335
Self-insurance accruals			96,487						77,099
Other noncurrent liabilities			12,181						11,583
Total liabilities			595,114						499,170
Commitments and contingencies (Note P)
Redeemable common shares related to 401KSOP and Employee Stock Ownership Plan (ESOP) 9,288 and 9,392 shares at redemption value as of October 1, 2022 and December 31, 2021			168,120						169,931
Common shareholders' equity:
Common shares, $.50 par value, per share; 96,000 shares authorized; 76,539 and 76,436 shares issued and outstanding before deducting treasury shares and which excludes 9,288 and 9,392 shares subject to redemption as of October 1, 2022 and December 31, 2021			38,398						38,379
Additional paid-in capital			154,111						135,897
Common shares subscribed, unissued			23,954						—
Retained earnings			286,279						239,979
Accumulated other comprehensive loss			(6,839)						(4,173)
			495,903						410,082
Less: Cost of common shares held in treasury; 42,082 shares at October 1, 2022 and 41,325 shares at December 31, 2021			338,532						306,242
Common shares subscription receivable			20,634						—
Total common shareholders' equity			136,737						103,840
Total liabilities and shareholders' equity			$	899,971					$	772,941
See notes to condensed consolidated financial statements (unaudited).

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Index

THE DAVEY TREE EXPERT COMPANY

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited)

(In thousands, except per share dollar amounts)

			Three Months Ended												Nine Months Ended
			October 1, 2022						October 2, 2021						October 1, 2022						October 2, 2021
Revenues			$	398,945					$	370,244					$	1,143,548					$	1,024,541
Costs and expenses:
Operating			254,661						232,599						740,422						650,909
Selling			72,364						67,353						201,315						178,876
General and administrative			27,964						20,739						87,014						69,712
Depreciation and amortization			13,780						14,127						41,082						41,287
Gain on sale of assets, net			(2,837)						(1,507)						(5,787)						(4,174)
Total costs and expenses			365,932						333,311						1,064,046						936,610
Income from operations			33,013						36,933						79,502						87,931
Other income (expense):
Interest expense			(2,164)						(1,449)						(5,312)						(4,093)
Interest income			303						39						489						161
Other, net			(3,371)						(2,298)						(8,241)						(5,548)
Income before income taxes			27,781						33,225						66,438						78,451
Income taxes			7,317						8,298						17,407						20,554
Net income			$	20,464					$	24,927					$	49,031					$	57,897
Net income per share:
Basic			$	.46					$	.56					$	1.10					$	1.28
Diluted			$	.44					$	.52					$	1.05					$	1.21
Weighted-average shares outstanding:
Basic			44,148						44,885						44,422						45,257
Diluted			46,405						47,951						46,719						47,785
See notes to condensed consolidated financial statements (unaudited).

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Index

THE DAVEY TREE EXPERT COMPANY

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited)

(In thousands)

			Three Months Ended												Nine Months Ended
			October 1, 2022						October 2, 2021						October 1, 2022						October 2, 2021
Net income			$	20,464					$	24,927					$	49,031					$	57,897
Components of other comprehensive income (loss), net of tax:
Foreign currency translation adjustments			(1,934)						(788)						(2,455)						105
Unrealized loss on available-for-sale securities			(98)						—						(279)						—
Amortization of defined benefit pension items:
Net actuarial loss			18						27						55						77
Prior service cost			4						11						13						35
Defined benefit pension plan adjustments			22						38						68						112
Other comprehensive income (loss), net of tax			(2,010)						(750)						(2,666)						217
Comprehensive income			$	18,454					$	24,177					$	46,365					$	58,114
See notes to condensed consolidated financial statements (unaudited).

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Index

THE DAVEY TREE EXPERT COMPANY

CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Unaudited)

(In thousands, except per share data)

			Common Shares						Additional Paid-in Capital						Common Shares Subscribed, Unissued						Retained Earnings						Accumulated Other Comprehensive Income (Loss), Net of Tax						Common Shares Held in Treasury						Common Shares Subscription Receivable						Total  Common Shareholders' Equity
Balances at July 2, 2022			$	38,645					$	151,752					$	—					$	266,745					$	(4,829)					$	(333,611)					$	533					$	119,235
Net income			—						—						—						20,464						—						—						—						20,464
Change in 401KSOP and ESOP related shares			(247)						(4,215)						—						1						—						—						—						(4,461)
Shares sold to employees			—						3,354						—						—						—						2,623						—						5,977
Options exercised			—						35						—						—						—						137						—						172
Subscription shares			—						1,554						23,954						—						—						1,212						(21,167)						5,553
Stock-based compensation			—						1,631						—						—						—						—						—						1,631
Dividends, $.020 per share			—						—						—						(931)						—						—						—						(931)
Currency translation adjustments			—						—						—						—						(1,934)						—						—						(1,934)
Defined benefit pension plans			—						—						—						—						22						—						—						22
Available-for-sale securities			—						—						—						—						(98)						—						—						(98)
Shares purchased			—						—						—						—						—						(8,893)						—						(8,893)
Balances at October 1, 2022			$	38,398					$	154,111					$	23,954					$	286,279					$	(6,839)					$	(338,532)					$	(20,634)					$	136,737
Balances at January 1, 2022			$	38,379					$	135,897					$	—					$	239,979					$	(4,173)					$	(306,242)					$	—					$	103,840
Net income			—						—						—						49,031						—						—						—						49,031
Change in 401KSOP and ESOP related shares			19						1,840						—						(49)						—						—						—						1,810
Shares sold to employees			—						11,714						—						—						—						9,623						—						21,337
Options exercised			—						(1,122)						—						—						—						2,742						—						1,620
Subscription shares			—						1,554						23,954						—						—						1,212						(20,634)						6,086
Stock-based compensation			—						4,228						—						—						—						—						—						4,228
Dividends, $.058 per share			—						—						—						(2,682)						—						—						—						(2,682)
Currency translation adjustments			—						—						—						—						(2,455)						—						—						(2,455)
Defined benefit pension plans			—						—						—						—						68						—						—						68
Available-for-sale securities			—						—												—						(279)						—						—						(279)
Shares purchased			—						—						—						—						—						(45,867)						—						(45,867)
Balances at October 1, 2022			$	38,398					$	154,111					$	23,954					$	286,279					$	(6,839)					$	(338,532)					$	(20,634)					$	136,737

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Index

THE DAVEY TREE EXPERT COMPANY

CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Unaudited)

(In thousands, except per share data)

			Common Shares						Additional Paid-in Capital												Retained Earnings						Accumulated Other Comprehensive Income (Loss), Net of Tax						Common Shares Held in Treasury									Total  Common Shareholders' Equity
Balances at July 3, 2021			$	38,049					$	123,822											$	224,707					$	(3,580)					$	(290,253)								$	92,745
Net income			—						—												24,927						—						—									24,927
Change in 401KSOP and ESOP related shares			(16)						(529)												—						—						—									(545)
Shares sold to employees			—						1,655												—						—						1,293									2,948
Options exercised			—						(228)												—						—						1,828									1,600
Stock-based compensation			—						458												—						—						—									458
Dividends, $.015 per share			—						—												(781)						—						—									(781)
Currency translation adjustments			—						—												—						(788)						—									(788)
Defined benefit pension plans			—						—												—						38						—									38
Shares purchased			—						—												—						—						(9,242)									(9,242)
Balances at October 2, 2021			$	38,033					$	125,178											$	248,853					$	(4,330)					$	(296,374)								$	111,360
Balances at January 1, 2021			$	37,801					$	110,069											$	206,711					$	(4,547)					$	(270,360)								$	79,674
Net income			—						—												57,897						—						—									57,897
Change in 401KSOP and ESOP related shares			232						6,679												(13,628)						—						—									(6,717)
Shares sold to employees			—						7,098												—						—						6,645									13,743
Options exercised			—						(636)												—						—						3,849									3,213
Stock-based compensation			—						1,968												—						—						—									1,968
Dividends, $.043 per share			—						—												(2,127)						—						—									(2,127)
Currency translation adjustments			—						—												—						105						—									105
Defined benefit pension plans			—						—												—						112						—									112
Shares purchased			—						—												—						—						(36,508)									(36,508)
Balances at October 2, 2021			$	38,033					$	125,178											$	248,853					$	(4,330)					$	(296,374)								$	111,360
See notes to condensed consolidated financial statements (unaudited).

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Index

THE DAVEY TREE EXPERT COMPANY

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited)

(In thousands)

						Nine Months Ended
						October 1, 2022						October 2, 2021
Operating activities
Net income						$	49,031					$	57,897
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization						41,082						41,287
Other						(683)						(1,242)
Changes in operating assets and liabilities, net of assets acquired:
Accounts receivable						(49,451)						(30,268)
Accounts payable and accrued expenses						12,709						(9,471)
Self-insurance accruals						13,306						13,041
Prepaid expenses						(10,724)						(13,442)
Other, net						7,710						(401)
						13,949						(496)
Net cash provided by operating activities						62,980						57,401
Investing activities
Capital expenditures:
Equipment						(54,829)						(47,907)
Land and buildings						(15,916)						(8,728)
Purchases of businesses, net of cash acquired and debt incurred						(4,453)						(10,227)
Proceeds from sales of property and equipment						6,781						7,085
Purchases of marketable securities						(41,305)						—
Proceeds from sale of marketable securities						14,114						—
Net cash used in investing activities						(95,608)						(59,777)
Financing activities
Revolving credit facility borrowings						453,885						279,163
Revolving credit facility payments						(402,618)						(245,685)
Purchase of common shares for treasury						(45,867)						(36,508)
Sale of common shares from treasury						29,043						16,956
Dividends paid						(2,682)						(2,127)
Proceeds from notes payable						69,337						217,867
Payments of notes payable						(62,602)						(207,786)
Payments of finance leases						(2,313)						(2,688)
Net cash provided by financing activities						36,183						19,192
Effect of exchange rate changes on cash						(171)						40
Increase in cash						3,384						16,856
Cash, beginning of period						19,460						16,201
Cash, end of period						$	22,844					$	33,057
Supplemental cash flow information follows:
Interest paid						$	3,764					$	4,715
Income taxes paid						9,869						21,204
See notes to condensed consolidated financial statements (unaudited).

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Index

The Davey Tree Expert Company

Notes to Condensed Consolidated Financial Statements (Unaudited)

October 1, 2022

(Amounts in thousands, except share data)

A.Basis of Financial Statement Preparation

The consolidated financial statements present the financial position, results of operations and cash flows of The Davey Tree Expert Company and its subsidiaries. When we refer to “we,” “us,” “our,” the "Company," “Davey,” or “Davey Tree”, we mean The Davey Tree Expert Company and its subsidiaries, unless otherwise expressly stated or the context indicates otherwise.

We have prepared the accompanying unaudited condensed consolidated financial statements in accordance with accounting principles generally accepted in the United States (“U.S. GAAP”), as codified in the Financial Accounting Standards Board (“FASB”) Accounting Standards Codification ("ASC"), and with the rules and regulations of the Securities and Exchange Commission (“SEC”) for interim financial information. The condensed consolidated financial statements include all adjustments which, in the opinion of management, are necessary for a fair presentation of the results for the interim periods presented. All such adjustments are of a normal, recurring nature. All intercompany accounts and transactions have been eliminated in consolidation.

Certain information and disclosures required by U.S. GAAP for complete financial statements have been omitted in accordance with the rules and regulations of the SEC. We suggest that these condensed consolidated financial statements be read in conjunction with the financial statements included in our annual report on Form 10-K for the year ended December 31, 2021 (the “2021 Annual Report”).

Use of Estimates in Financial Statement Preparation--The preparation of financial statements in accordance with U.S. GAAP requires the use of estimates and assumptions that affect reported amounts. Our condensed consolidated financial statements include amounts that are based on management’s best estimates and judgments. Estimates are used for, but not limited to, accounts receivable valuation, depreciable lives of fixed assets, long-lived asset valuation, self-insurance accruals, income taxes, stock valuation and revenue recognition. Actual results could differ from those estimates.

Our business continues to be impacted by a number of macro-economic factors, including the trailing impact of the COVID-19 pandemic. Global supply chains and product availability remain highly challenged and ongoing global events in Eastern Europe have only exacerbated an already difficult operating environment. These factors, combined with higher fuel costs, rising interest rates and a highly competitive labor market, have created an inflationary environment and cost pressures.

The Company’s fiscal quarters each contain thirteen operating weeks, with the exception of the fourth quarter of a 53-week fiscal year, which contains fourteen operating weeks. The Company’s fiscal quarter that ended October 1, 2022 is referred to as the third quarter of 2022, and the fiscal quarter ended October 2, 2021 is referred to as the third quarter of 2021.

Recent Accounting Guidance

Accounting Standard Not Yet Adopted

Accounting Standards Update 2020-04, Reference Rate Reform (Topic 848)--In March 2020, the FASB issued Accounting Standards Update ("ASU") 2020-04, "Reference Rate Reform (Topic 848)—Facilitation of the Effects of Reference Rate Reform on Financial Reporting". The guidance of this ASU is designed to provide relief from the accounting analysis and impacts that may otherwise be required for modifications to agreements (e.g., loans, debt securities, derivatives, borrowings) necessitated by reference rate reform. It also

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Index

The Davey Tree Expert Company

Notes to Condensed Consolidated Financial Statements (Unaudited)

October 1, 2022

(Amounts in thousands, except share data)

provides optional expedients to enable companies to continue to apply hedge accounting to certain hedging relationships impacted by reference rate reform. Application of the guidance is optional, is only available in certain situations, and is only available for companies to apply until December 31, 2022. In January 2021, the FASB amended ASU 2020-04 by issuing Accounting Standards Update No. 2021-01, Reference Rate Reform Scope ("ASU 2021-01"). ASU 2021-01 clarifies the scope of optional expedients and exceptions to derivatives that are affected by the discounting transition. The Company is currently reviewing its agreements impacted by the reference rate reform and does not expect these ASUs to have a material impact to the Company’s financial statements.

B.    Seasonality of Business

Due to the seasonality of our business, our operating results for the three and nine months ended October 1, 2022 are not indicative of results that may be expected for any other interim period or for the year ending December 31, 2022. Our business seasonality traditionally results in higher revenues during the second and third quarters as compared with the first and fourth quarters of the year, while the methods of accounting for fixed costs, such as depreciation expense, amortization, rent and interest expense, are not significantly impacted by business seasonality.

C.    Accounts Receivable, Net and Supplemental Balance-Sheet Information

Accounts receivable, net, consisted of the following:

Accounts receivable, net			October 1, 2022						December 31, 2021
Accounts receivable			$	236,903					$	215,336
Unbilled receivables(1)			92,732						65,957
			329,635						281,293
Less allowances for credit losses			3,344						3,013
Accounts receivable, net			$	326,291					$	278,280

(1)    Unbilled receivables consist of work-in-process in accordance with the terms of contracts, primarily with utility services customers.

The following items comprised the amounts included in the balance sheets:

Other current assets			October 1, 2022						December 31, 2021
Refundable income taxes			$	364					$	1,346
Prepaid expenses			41,619						30,911
Assets invested for self-insurance			4,000						4,250
Other			898						1,346
Total			$	46,881					$	37,853

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Index

The Davey Tree Expert Company

Notes to Condensed Consolidated Financial Statements (Unaudited)

October 1, 2022

(Amounts in thousands, except share data)

Property and equipment, net			October 1, 2022						December 31, 2021
Land and land improvements			$	26,075					$	22,129
Buildings and leasehold improvements			75,097						63,933
Equipment			664,518						646,552
			765,690						732,614
Less accumulated depreciation			502,989						504,629
Total			$	262,701					$	227,985

Other assets, noncurrent			October 1, 2022						December 31, 2021
Investment--cost-method affiliate			$	1,258					$	1,258
Deferred income taxes			5,032						4,937
Cloud computing arrangements			3,353						6,530
Other			4,661						4,539
Total			$	14,304					$	17,264

Accrued expenses			October 1, 2022						December 31, 2021
Employee compensation			$	34,727					$	37,828
Accrued compensated absences			11,943						11,007
Self-insured medical claims			3,088						2,891
Income tax payable			6,685						145
Customer advances, deposits			6,957						4,009
Taxes, other than income			17,876						13,789
Other			3,771						5,469
Total			$	85,047					$	75,138

Other current liabilities			October 1, 2022						December 31, 2021
Current portion of:
Lease liability-operating leases			$	31,726					$	28,682
Self-insurance accruals			42,774						48,867
Total			$	74,500					$	77,549

Other noncurrent liabilities			October 1, 2022						December 31, 2021
Non-qualified retirement plans			$	9,200					$	8,713
Other			2,981						2,870
Total			$	12,181					$	11,583

D.    Business Combinations

Our cash investments in businesses during the first nine months of 2022 were $4,453 and we issued debt, in the form of notes payable to the sellers, of $1,233 which have been included in our Residential and Commercial and Utility segments. In the first nine months of 2022, we also made a payment of $100 for a contingent liability incurred in an acquisition made during the fourth quarter of 2021. Measurement-

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Index

The Davey Tree Expert Company

Notes to Condensed Consolidated Financial Statements (Unaudited)

October 1, 2022

(Amounts in thousands, except share data)

period adjustments are not complete. The measurement period for purchase price allocations ends as soon as information of the facts and circumstances becomes available, but does not exceed one year from the acquisition date. During the year ended December 31, 2021, our cash investments in businesses was $11,725 and debt issued, in the form of notes payable to the sellers, was $2,961.

The following table summarizes the preliminary purchase price allocation of the estimated fair values of the assets acquired and liabilities assumed:

			Nine Months Ended October 1, 2022						Year Ended December 31, 2021
Detail of acquisitions:
Assets acquired:
Cash			$	—					$	292
Receivables			—						509
Operating supplies			39						1,044
Prepaid expense			—						203
Equipment			1,186						4,049
Deposits and other			265						1,574
Intangible assets			1,350						3,005
Goodwill			3,175						7,723
Liabilities assumed			(329)						(3,713)
Debt issued for purchases of businesses			(1,233)						(2,961)
Cash paid			$	4,453					$	11,725

The results of operations of acquired businesses have been included in the condensed consolidated statements of operations beginning as of the effective dates of acquisition. The effect of these acquisitions on our consolidated revenues and results of operations for the three and nine months ended October 1, 2022 was not significant. Pro forma net sales and results of operations for the acquisitions, had they occurred at the beginning of the nine months ended October 1, 2022, are not material and, accordingly, are not provided.

The acquired intangible assets consist of tradenames, non-competition agreements and customer relationships. The tradenames and customer relationships were assigned an average useful life of seven years and the non-competition agreements were assigned an average useful life of five years.

Subsequent to October 1, 2022 and through November 8, 2022, we acquired one business approximating $1,450 with no liabilities assumed and debt issued of $470. The acquired company is in our Residential and Commercial segment and is located in North Carolina. We do not expect the effect of this acquisition on our consolidated revenues and results of operations to be significant.

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Index

The Davey Tree Expert Company

Notes to Condensed Consolidated Financial Statements (Unaudited)

October 1, 2022

(Amounts in thousands, except share data)

E.    Marketable Securities

The following table summarizes available-for-sale debt securities held at October 1, 2022 by asset type:

						Available-For-Sale Debt Securities
						Amortized Cost						Gross Unrealized Gains						Gross Unrealized Losses						Fair Value (Net Carrying Amount)
October 1, 2022
Fixed maturity:
United States Government and agency securities						$	20,556					$	6					$	(301)					$	20,261
Corporate notes and bonds						315						—						(58)						257
Total available-for-sale debt securities						$	20,871					$	6					$	(359)					$	20,518
December 31, 2021
Fixed maturity:
United States Government and agency securities						$	3,244					$	11					$	(25)					$	3,230
Corporate notes and bonds						174						2						—						176
Total available-for-sale debt securities						$	3,418					$	13					$	(25)					$	3,406

Marketable securities are composed of available-for-sale debt securities and marketable equity securities and all marketable securities are held at fair value. We carry a portion of our marketable securities portfolio in long-term assets since they are generally held for the settlement of our insurance claims processed through our wholly owned captive insurance subsidiary.

Available-for-sale debt securities are included in marketable securities and other investments totaling $20,518 and $3,406 at October 1, 2022 and December 31, 2021, respectively. Realized gains and losses on sales of available-for-sale debt securities are recognized in net income on the specific identification basis. Changes in the fair values of available-for-sale debt securities that are determined to be holding gains or losses are recorded through accumulated other comprehensive income (loss) net of applicable taxes, within shareholders' equity. In assessing whether a credit loss exists, we evaluate our ability to hold the investment, the strength of the underlying collateral and the extent to which the investment's amortized cost or cost, as appropriate, exceeds its related fair value.

We held approximately $18,846 and $11,386 in marketable equity securities as of October 1, 2022 and December 31, 2021, respectively. Realized and unrealized gains and losses on marketable equity securities are included in other income (expense) in the Consolidated Statements of Operations.

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Index

The Davey Tree Expert Company

Notes to Condensed Consolidated Financial Statements (Unaudited)

October 1, 2022

(Amounts in thousands, except share data)

The net carrying values of available-for-sale debt securities at October 1, 2022 by contractual maturity, are shown below. Expected maturities may differ from contractual maturities because the issuers of the securities may have the right to prepay obligations without prepayment penalties.

						Amortized Cost						Fair Value
Due:
Less than one year						$	12,999					$	12,997
One year through five years						5,729						5,568
Five years through ten years						234						191
After ten years						1,909						1,762
Total						$	20,871					$	20,518

F.    Identified Intangible Assets and Goodwill, Net

The carrying amounts of the identified intangible assets and goodwill acquired in connection with our acquisitions were as follows:

			October 1, 2022												December 31, 2021
			Carrying Amount						Accumulated Amortization						Carrying Amount						Accumulated Amortization
Amortized intangible assets:
Customer lists/relationships			$	33,498					$	26,222					$	32,294					$	24,090
Employment-related			10,451						8,754						9,946						8,301
Tradenames			8,641						6,977						8,426						6,642
Amortized intangible assets			52,590						$	41,953					50,666						$	39,033
Less accumulated amortization			41,953												39,033
Identified intangible assets, net			$	10,637											$	11,633
Goodwill			$	58,999											$	55,980

The changes in the carrying amounts of goodwill, by segment, for the nine months ended October 1, 2022 and the year ended December 31, 2021 were as follows:

			Balance at January 1, 2022						Acquisitions						Translation and Other Adjustments						Balance at October 1, 2022
Utility			$	4,911					$	30					$	—					$	4,941
Residential and Commercial			51,069						3,145						(156)						54,058
Total			$	55,980					$	3,175					$	(156)					$	58,999
			Balance at January 1, 2021						Acquisitions						Translation and Other Adjustments						Balance at December 31, 2021
Utility			$	4,911					$	—					$	—					$	4,911
Residential and Commercial			43,345						7,723						1						51,069
Total			$	48,256					$	7,723					$	1					$	55,980

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Index

The Davey Tree Expert Company

Notes to Condensed Consolidated Financial Statements (Unaudited)

October 1, 2022

(Amounts in thousands, except share data)

Estimated future aggregate amortization expense of intangible assets--The estimated future aggregate amortization expense of intangible assets, as of October 1, 2022, was as follows:

						Estimated Future Amortization Expense
Remaining three months of 2022						$	820
2023						3,073
2024						2,752
2025						1,970
2026						1,132
2027						648
Thereafter						242
						$	10,637

G.    Short and Long-Term Debt and Commitments Related to Letters of Credit

We have short-term lines of credit with several banks totaling $11,091. At October 1, 2022, we had $8,971 available under the lines of credit and $2,120 committed through issued letters of credit. Borrowings outstanding generally bear interest at the banks' prime rate or LIBOR plus a margin adjustment of .75% to 1.50%.

Our long-term debt consisted of the following:

			October 1, 2022						December 31, 2021
Revolving credit facility:
Swing-line borrowings			$	23,099					$	16,832
LIBOR borrowings			75,000						30,000
			98,099						46,832
Senior unsecured notes:
3.99% Senior unsecured notes			50,000						50,000
4.00% Senior unsecured notes			25,000						25,000
			75,000						75,000
Term loans			33,128						25,182
			206,227						147,014
Less debt issuance costs			558						674
Less current portion			31,090						22,809
			$	174,579					$	123,531

Revolving Credit Facility--In August 2021, the Company amended and restated its revolving credit facility with its existing bank group. The amended and restated credit agreement, which expires in August 2026, permits borrowings, as defined, of up to $325,000, including a letter of credit sublimit of $150,000 and a swing-line commitment of $30,000. Under certain circumstances, the amount available under the revolving credit facility may be increased to $425,000. The revolving credit facility contains certain affirmative and negative covenants customary for this type of facility and includes financial covenant ratios with respect to a maximum leverage ratio (not to exceed 3.00 to 1.00 with exceptions in case of material acquisitions) and a minimum interest coverage ratio (not less than 3.00 to 1.00), in each case

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Index

The Davey Tree Expert Company

Notes to Condensed Consolidated Financial Statements (Unaudited)

October 1, 2022

(Amounts in thousands, except share data)

subject to certain further restrictions as described in the credit agreement. As of October 1, 2022, we had unused commitments under the facility approximating $224,201, with $100,799 committed, consisting of borrowings of $98,099 and issued letters of credit of $2,700.

Borrowings outstanding bear interest, at Davey Tree’s option, of either (a) the base rate or (b) LIBOR plus a margin adjustment ranging from .875% to 1.50%--with the margin adjustments based on the Company's leverage ratio at the time of borrowing. The base rate is the greater of (i) the agent bank’s prime rate, (ii) LIBOR plus 1.50%, or (iii) the federal funds rate plus .50%. A commitment fee ranging from .10% to .225% is also required based on the average daily unborrowed commitment.

3.99% Senior Unsecured Notes--On September 21, 2018, we issued 3.99% Senior Notes, Series A (the "3.99% Senior Notes"), in the aggregate principal amount of $50,000. The 3.99% Senior Notes are due September 21, 2028.

The 3.99% Senior Notes were issued pursuant to a Note Purchase and Private Shelf Agreement (the “Note Purchase and Shelf Agreement”) between the Company, PGIM, Inc. and the purchasers of the 3.99% Senior Notes, which was amended in September 2021. Among other things, the amendment increased the total facility limit to $150,000 and extended the issuance period for subsequent series of promissory notes to be issued and sold pursuant to the Note Purchase and Shelf Agreement to September 2024. The amendment also amended certain provisions and covenants to generally conform them to the corresponding provisions and covenants in the amended and restated revolving credit agreement. In addition, the amendment and restatement of the revolving credit agreement in August 2021 provided that the Company is permitted to incur indebtedness arising under the Note Purchase and Shelf Agreement in an aggregate principal amount not to exceed $150,000. As the Company has previously issued notes in an aggregate amount of $75,000 under the Note Purchase and Shelf Agreement, it now has capacity to issue subsequent series of promissory notes pursuant to the Note Purchase and Shelf Agreement (the "Shelf Notes") in an aggregate amount of up to $75,000.

The 3.99% Senior Notes are equal in right of payment with our revolving credit facility and all other senior unsecured obligations of the Company. Interest is payable semiannually and five equal, annual principal payments commence on September 21, 2024 (the sixth anniversary of issuance). The Note Purchase and Shelf Agreement contains customary events of default and covenants related to limitations on indebtedness and transactions with affiliates and the maintenance of certain financial ratios. The Company may prepay at any time all, or from time to time any part of, the outstanding principal amount of the 3.99% Senior Notes, subject to the payment of a make-whole amount.

4.00% Senior Unsecured Notes--On February 5, 2019, we issued 4.00% Senior Notes, Series B (the "4.00% Senior Notes") pursuant to the Note Purchase and Shelf Agreement in the aggregate principal amount of $25,000. The 4.00% Senior Notes are due September 21, 2028. The 4.00% Senior Notes are equal in right of payment with our revolving credit facility and all other senior unsecured obligations of the Company. Interest is payable semiannually and five equal, annual principal payments commence on September 21, 2024.

The net proceeds of all senior notes were used to pay down borrowings under our revolving credit facility.

Term loans--Periodically, the Company will enter into term loans for the procurement of insurance or to finance acquisitions.

Aggregate Maturities of Long-Term Debt--Aggregate maturities of long-term debt based on the principal amounts outstanding at October 1, 2022 were as follows: 2022--$9,885; 2023--$21,635; 2024--$16,196; 2025--$15,411; 2026--$113,100; 2027--$15,000; and thereafter $15,000.

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Index

The Davey Tree Expert Company

Notes to Condensed Consolidated Financial Statements (Unaudited)

October 1, 2022

(Amounts in thousands, except share data)

Accounts Receivable Securitization Facility--In June 2022, the Company amended its Accounts Receivable Securitization Facility (the "AR Securitization program") to extend the scheduled termination date for an additional one-year period, to June 29, 2023. In addition to extending the termination date for another year, the amendment replaced the London Interbank Offered Rate (LIBOR) interest rate provisions with customary provisions based on the secured overnight financing rate ("SOFR").

The AR Securitization program has a limit of $100,000, of which $89,689 and $83,355 was issued for LCs as of October 1, 2022 and December 31, 2021, respectively.

Under the AR Securitization program, Davey Tree transfers by selling or contributing current and future trade receivables to a wholly-owned, bankruptcy-remote financing subsidiary which pledges a perfected first priority security interest in the trade receivables--equal to the issued LCs as of October 1, 2022--to the bank in exchange for the bank issuing LCs.

Fees payable to the bank include: (a) an LC issuance fee, payable on each settlement date, in the amount of .90% per annum on the aggregate amount of all LCs outstanding plus outstanding reimbursement obligations (e.g., arising from drawn LCs), if any, and (b) an unused LC fee, payable monthly, equal to (i) .35% per annum for each day on which the sum of the total LCs outstanding plus any outstanding reimbursement obligations is greater than or equal to 50% of the facility limit and (ii) .45% per annum for each day on which the sum of the total LCs outstanding plus any outstanding reimbursement obligations is less than 50% of the facility limit. If an LC is drawn and the bank is not immediately reimbursed in full for the drawn amount, any outstanding reimbursement obligation will accrue interest at a per annum rate equal to the term SOFR, plus 0.10% or, in certain circumstances, a base rate equal to the greatest of (i) the bank’s prime rate, (ii) the federal funds rate plus .50% and (iii) 1.00% above the Daily one month SOFR plus 0.10% and, following any default, 2.00% plus the greater of (a) the term SOFR plus 0.10% and (b) a base rate equal to the greatest of (i), (ii) and (iii) above.

The agreements underlying the AR Securitization program contain various customary representations and warranties, covenants, and default provisions which provide for the termination and acceleration of the commitments under the AR Securitization program in circumstances including, but not limited to, failure to make payments when due, breach of a representation, warranty or covenant, certain insolvency events or failure to maintain the security interest in the trade receivables, and defaults under other material indebtedness.

Total Commitments Related to Issued Letters of Credit--As of October 1, 2022, total commitments related to issued LCs were $94,509, of which $2,700 were issued under the revolving credit facility, $89,689 were issued under the AR Securitization program, and $2,120 were issued under short-term lines of credit. As of December 31, 2021, total commitments related to issued LCs were $88,362, of which $2,877 were issued under the revolving credit facility, $83,355 were issued under the AR Securitization program, and $2,130 were issued under short-term lines of credit.

As of October 1, 2022, we were in compliance with all debt covenants.

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Index

The Davey Tree Expert Company

Notes to Condensed Consolidated Financial Statements (Unaudited)

October 1, 2022

(Amounts in thousands, except share data)

H.    Leases

We lease certain office and parking facilities, warehouse space, equipment, vehicles and information technology equipment under operating and finance leases. Lease expense for these leases is recognized within the Condensed Consolidated Statements of Operations on a straight-line basis over the lease term, with variable lease payments recognized in the period those payments are incurred. The following table summarizes the amounts recognized in our Condensed Consolidated Balance Sheet related to leases:

			Condensed Consolidated Balance Sheet Classification						October 1, 2022						December 31, 2021
Assets
Operating lease assets			Right-of-use assets - operating leases						$	95,350					$	86,423
Finance lease assets			Property and equipment, net						13,268						11,592
Total lease assets									$	108,618					$	98,015
Liabilities
Current operating lease liabilities			Other current liabilities						$	31,726					$	28,682
Non-current operating lease liabilities			Lease liabilities - operating leases						62,586						57,335
Total operating lease liabilities									94,312						86,017
Current portion of finance lease liabilities			Current portion of long-term debt and finance lease liabilities						2,998						2,459
Non-current finance lease liabilities			Lease liabilities - finance leases						9,704						8,646
Total finance lease liabilities									12,702						11,105
Total lease liabilities									$	107,014					$	97,122

The components of lease cost recognized within our Condensed Consolidated Statements of Operations were as follows:

												Three Months Ended												Nine Months Ended
			Condensed Consolidated Statements of Operations Classification									October 1, 2022						October 2, 2021						October 1, 2022						October 2, 2021
Operating lease cost			Operating expense									$	6,649					$	4,965					$	19,095					$	13,065
Operating lease cost			Selling expense									2,926						2,631						8,492						7,718
Operating lease cost			General and administrative expense									304						290						883						867
Finance lease cost:
Amortization of right-of-use assets			Depreciation and amortization									889						752						2,334						1,985
Interest expense on lease liabilities			Interest expense									74						52						196						134
Other lease cost (1)			Operating expense									1,271						999						3,613						2,839
Other lease cost (1)			Selling expense									235						360						1,059						1,013
Other lease cost (1)			General and administrative expense									27						8						59						28
Total lease cost												$	12,375					$	10,057					$	35,731					$	27,649

(1) Other lease cost includes short-term lease costs and variable lease costs.

We often have options to renew lease terms for buildings and other assets. The exercise of lease renewal options is generally at our sole discretion. In addition, certain lease agreements may be terminated prior to their original expiration date at our discretion. We evaluate each renewal and termination option at the lease commencement date to determine if we are reasonably certain to exercise the option on

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Index

The Davey Tree Expert Company

Notes to Condensed Consolidated Financial Statements (Unaudited)

October 1, 2022

(Amounts in thousands, except share data)

the basis of economic factors. The weighted average remaining lease terms as of October 1, 2022 was 3.7 years for operating leases and 4.7 years for finance leases.

The discount rate implicit within our leases is generally not determinable and therefore the Company determines the discount rate based on its incremental borrowing rate. The incremental borrowing rate for each lease is determined based on its term and the currency in which lease payments are made, adjusted for the impacts of collateral. The weighted average discount rates used to measure our lease liabilities as of October 1, 2022 was 2.90% for operating leases and 2.72% for finance leases.

Supplemental Cash Flow Information Related to Leases			Nine Months Ended
			October 1, 2022						October 2, 2021
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases			$	(29,194)					$	(21,822)
Operating cash flows from finance leases			(196)						(134)
Financing cash flows from finance leases			(2,313)						(2,688)
Right-of-use assets obtained in exchange for lease obligations:
Operating leases			38,403						47,069
Finance leases			3,910						4,174

Maturity Analysis of Lease Liabilities									As of October 1, 2022
									Operating Leases						Finance Leases
			Remaining three months of 2022						$	9,301					$	747
			2023						31,878						3,237
			2024						24,610						3,106
			2025						16,964						2,472
			2026						9,277						2,101
			2027						3,343						1,123
			Thereafter						4,061						732
			Total lease payments						99,434						13,518
			Less interest						5,122						816
			Total						$	94,312					$	12,702

I.    Stock-Based Compensation

Our shareholders approved the 2014 Omnibus Stock Plan (the “2014 Stock Plan”) at our annual meeting of shareholders on May 20, 2014. The 2014 Stock Plan replaced the expired 2004 Omnibus Stock Plan (the “2004 plan”) previously approved by the shareholders in 2004. The 2014 Stock Plan is administered by the Compensation Committee of the Board of Directors and has a term of ten years. All directors of the Company and employees of the Company and its subsidiaries are eligible to participate in the 2014 Stock Plan. The 2014 Stock Plan (similar to the 2004 plan) continues the maintenance of the Employee Stock Purchase Plan, as well as provisions for the grant of stock options and other stock-based incentives. The 2014 Stock Plan provides for the grant of five percent of the number of the Company’s common shares outstanding as of the first day of each fiscal year plus the number of common shares that were available for grant of awards, but not granted, in prior years. In no event, however, may the number of common shares available for the grant of awards in any fiscal year exceed ten percent of the common shares outstanding as of the first day of that fiscal year. Common shares subject to an award

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Index

The Davey Tree Expert Company

Notes to Condensed Consolidated Financial Statements (Unaudited)

October 1, 2022

(Amounts in thousands, except share data)

that is forfeited, terminated, or canceled without having been exercised are generally added back to the number of shares available for grant under the 2014 Stock Plan.

Stock-based compensation expense under all share-based payment plans -- our Employee Stock Purchase Plan, stock option plans, stock-settled stock appreciation rights ("SSARs") and restricted stock units ("RSUs") -- was included in the results of operations as follows:

			Three Months Ended												Nine Months Ended
			October 1, 2022						October 2, 2021						October 1, 2022						October 2, 2021
Compensation expense, all share-based payment plans			$	1,658					$	1,167					$	5,244					$	3,432

Stock-based compensation consisted of the following:

Employee Stock Purchase Plan--Under the Employee Stock Purchase Plan, all full-time employees with one year of service are eligible to purchase, through payroll deduction, common shares. Employee purchases under the Employee Stock Purchase Plan are at 85% of the fair market value of the common shares--a 15% discount. We recognize compensation costs as payroll deductions are made. The 15% discount of total shares purchased under the plan resulted in compensation cost of $1,380 being recognized for the nine months ended October 1, 2022 and $1,187 for the nine months ended October 2, 2021.

Stock Option Plans--The stock options outstanding were awarded under a graded vesting schedule, measured at fair value, and have a term of ten years. Compensation costs for stock options are recognized over the requisite service period on the straight-line recognition method. Compensation cost recognized for stock options was $289 for the nine months ended October 1, 2022 and $343 for the nine months ended October 2, 2021. Beginning in 2021, management and the Compensation Committee replaced the issuance of stock options with performance-based restricted stock units ("PRSUs") for certain employees.

Stock-Settled Stock Appreciation Rights--A SSAR is an award that allows the recipient to receive common shares equal to the appreciation in the fair market value of our common shares between the date the award was granted and the conversion date of the shares vested. Effective January 1, 2019, management and the Compensation Committee replaced the issuance of future SSARs with PRSUs for certain management employees.

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Index

The Davey Tree Expert Company

Notes to Condensed Consolidated Financial Statements (Unaudited)

October 1, 2022

(Amounts in thousands, except share data)

The following table summarizes our SSARs as of October 1, 2022.

Stock-Settled Stock Appreciation Rights						Number of Rights						Weighted- Average Award Date Value						Weighted- Average Remaining Contractual Life						Unrecognized Compensation Cost						Aggregate Intrinsic Value
Unvested, January 1, 2022						87,534						$	1.92
Granted						—						—
Forfeited						—						—
Vested						(43,752)						1.92
Unvested, October 1, 2022						43,782						$	1.92					0.3 years						$	19					$	792

Compensation costs for SSARs are determined using a fair-value method and amortized over the requisite service period. “Intrinsic value” is defined as the amount by which the fair market value of a common share exceeds the grant date price of a SSAR. Compensation expense for SSARs was $65 for the nine months ended October 1, 2022 and $120 for the nine months ended October 2, 2021.

Restricted Stock Units--During the nine months ended October 1, 2022, the Compensation Committee awarded 336,664 PRSUs to certain management employees and 14,693 RSUs to nonemployee directors. The Compensation Committee made similar awards in prior periods. The awards vest over specified periods. The following table summarizes PRSUs and RSUs as of October 1, 2022.

Restricted Stock Units						Number of Stock Units						Weighted- Average Grant Date Value						Weighted- Average Remaining Contractual Life						Unrecognized Compensation Cost						Aggregate Intrinsic Value
Unvested, January 1, 2022						740,160						$	12.49
Granted						351,357						17.89
Forfeited						(1,000)						17.89
Vested						(181,176)						11.04
Unvested, October 1, 2022						909,341						$	14.86					2.0 years						$	8,315					$	13,517
Employee PRSUs						851,640						$	14.89					2.0 years						$	7,863					$	12,685
Nonemployee Director RSUs						57,701						$	14.42					2.2 years						$	452					$	832

Compensation cost for PRSUs and RSUs is determined using a fair-value method and amortized on the straight-line recognition method over the requisite service period. “Intrinsic value” is defined as the amount by which the fair market value of a common share exceeds the grant date price of a PRSU or an RSU. Compensation expense on PRSUs and RSUs totaled $3,510 for the nine months ended October 1, 2022 and $1,782 for the nine months ended October 2, 2021.

We estimated the fair value of each stock-based award on the date of grant using a binomial option-pricing model. The binomial model considers a range of assumptions related to volatility, risk-free interest rate and employee exercise behavior. Expected volatilities utilized in the binomial model are based on historical volatility of our stock prices and other factors. Similarly, the dividend yield is based on historical experience and expected future changes. The binomial model also incorporates exercise and forfeiture assumptions based on an

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Index

The Davey Tree Expert Company

Notes to Condensed Consolidated Financial Statements (Unaudited)

October 1, 2022

(Amounts in thousands, except share data)

analysis of historical data. The expected life of the stock-based awards is derived from the output of the binomial model and represents the period of time that awards granted are expected to be outstanding.

The fair values of stock-based awards granted were estimated at the dates of grant with the following weighted-average assumptions.

			Nine Months Ended
			October 1, 2022						October 2, 2021
Volatility rate			9.7		%				9.9		%
Risk-free interest rate			1.7		%				.3		%
Expected dividend yield			.4		%				.4		%
Expected life of awards (years)			3.0						3.0

General Stock Option Information--The following table summarizes activity under the stock option plans for the nine months ended October 1, 2022.

Stock Options						Number of Options Outstanding						Weighted- Average Exercise Price						Weighted- Average Remaining Contractual Life						Aggregate Intrinsic Value
Outstanding, January 1, 2022						2,350,934						$	8.56
Granted						—						—
Exercised						(219,143)						8.29
Forfeited						(17,820)						8.01
Outstanding, October 1, 2022						2,113,971						$	8.59					4.2 years						$	20,104
Exercisable, October 1, 2022						1,725,879						$	7.99					3.5 years						$	17,449

As of October 1, 2022, there was approximately $489 of unrecognized compensation cost related to stock options outstanding. The cost is expected to be recognized over a weighted-average period of 0.8 years. “Intrinsic value” is defined as the amount by which the market price of a common share exceeds the exercise price of an option. 

Common shares are issued from treasury upon the exercise of stock options and SSARs, the vesting of RSUs and PRSUs or purchases under the Employee Stock Purchase Plan.

J.    Income Taxes

Our income tax provision for interim periods is determined using an estimate of our annual effective tax rate adjusted for discrete items, if any, that are taken into account in the relevant period. Each quarter we update our estimate of the annual effective tax rate and, if our estimated annual tax rate changes, we make a cumulative adjustment. The estimated annual effective tax rate for the nine months ended October 1, 2022 was 26.6%. Our actual effective tax rate was 26.3% and 25.0% for the three months ended October 1, 2022 and October 2, 2021, respectively. Our actual effective tax rate was 26.2% and 26.2% for the nine months ended October 1, 2022 and October 2, 2021, respectively. The change in the effective tax rate from statutory tax rates was primarily due to the impact of favorable discrete items which

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Index

The Davey Tree Expert Company

Notes to Condensed Consolidated Financial Statements (Unaudited)

October 1, 2022

(Amounts in thousands, except share data)

are a set amount and therefore have a larger impact on the rate based on our net income before tax in the first nine months compared to the impact it will have on the rate for the full year.

As of October 1, 2022, we had unrecognized tax benefits of $666, of which $293 would affect our effective rate if recognized, and accrued interest expense related to unrecognized benefits of $45. At December 31, 2021, we had unrecognized tax benefits of $700, of which $327 would affect our effective rate if recognized, and accrued interest expense related to unrecognized benefits of $56. Unrecognized tax benefits are the differences between a tax position taken, or expected to be taken, in a tax return, and the benefit recognized for financial reporting purposes.

We recognize interest accrued related to unrecognized tax benefits in income tax expense. Penalties, if incurred, would be recognized as a component of income tax expense.

The Company is routinely under audit by U.S. federal, state and local authorities and Canadian authorities in the area of income tax. These audits include questioning the timing and the amount of income and deductions and the allocation of income and deductions among various tax jurisdictions. With the exception of U.S. state jurisdictions and Canada, the Company is no longer subject to examination by tax authorities for the years through 2018. As of October 1, 2022, we believe it is reasonably possible that the total amount of unrecognized tax benefits will not significantly increase or decrease.

K.    Accumulated Other Comprehensive Income (Loss)

Comprehensive income (or loss) is comprised of net income (or net loss) and other components, including foreign currency translation adjustments and defined benefit pension plan adjustments.

The following summarizes the components of other comprehensive income (loss) accumulated in shareholders’ equity for the three and nine months ended October 1, 2022 and October 2, 2021:

Three Months Ended October 1, 2022						Foreign Currency						Available for Sale Securities						Defined Benefit Pension Plans						Accumulated Other Comprehensive Income (Loss)
Balance at July 2, 2022						$	(4,175)					$	(181)					$	(473)					$	(4,829)
Other comprehensive income (loss) before reclassifications
Translation adjustment						$	(1,934)					$	—					$	—					$	(1,934)
Unrealized losses						—						(113)						—						(113)
Amounts reclassified from accumulated other comprehensive income (loss)						—						(11)						30						19
Tax effect						—						26						(8)						18
Net of tax amount						(1,934)						(98)						22						(2,010)
Balance at October 1, 2022						$	(6,109)					$	(279)					$	(451)					$	(6,839)

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Index

The Davey Tree Expert Company

Notes to Condensed Consolidated Financial Statements (Unaudited)

October 1, 2022

(Amounts in thousands, except share data)

Three Months Ended October 2, 2021						Foreign Currency						Available-for-Sale Securities						Defined Benefit Pension Plans						Accumulated Other Comprehensive Income (Loss)
Balance at July 3, 2021						$	(2,845)					$	—					$	(735)					$	(3,580)
Other comprehensive income (loss) before reclassifications
Translation adjustment						$	(788)					$	—					$	—					$	(788)
Amounts reclassified from accumulated other comprehensive income (loss)						—						—						51						51
Tax effect						—						—						(13)						(13)
Net of tax amount						(788)						—						38						(750)
Balance at October 2, 2021						$	(3,633)					$	—					$	(697)					$	(4,330)
Nine Months Ended October 1, 2022						Foreign Currency						Available-for-Sale Securities						Defined Benefit Pension Plans						Accumulated Other Comprehensive Income (Loss)
Balance at January 1, 2022						$	(3,654)					$	—					$	(519)					$	(4,173)
Other comprehensive income (loss) before reclassifications
Translation adjustment						$	(2,455)					$	—					$	—					$	(2,455)
Unrealized losses						—						(350)						—						(350)
Amounts reclassified from accumulated other comprehensive income (loss)						—						(3)						92						89
Tax effect						—						74						(24)						50
Net of tax amount						(2,455)						(279)						68						(2,666)
Balance at October 1, 2022						$	(6,109)					$	(279)					$	(451)					$	(6,839)
Nine Months Ended October 2, 2021						Foreign Currency						Available-for-Sale Securities						Defined Benefit Pension Plans						Accumulated Other Comprehensive Income (Loss)
Balance at January 1, 2021						$	(3,738)					$	—					$	(809)					$	(4,547)
Other comprehensive income (loss) before reclassifications
Translation adjustment						$	105					$	—					$	—					$	105
Amounts reclassified from accumulated other comprehensive income (loss)						—						—						151						151
Tax effect						—						—						(39)						(39)
Net of tax amount						105						—						112						217
Balance at October 2, 2021						$	(3,633)					$	—					$	(697)					$	(4,330)

The change in defined benefit pension plans of $30 and $92 for the three and nine months ended October 1, 2022, respectively, and $51 and $151 for the three and nine months ended October 2, 2021, respectively, was included in net periodic pension expense classified in the condensed consolidated statement of operations as general and administrative expense or other income (expense).

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Index

The Davey Tree Expert Company

Notes to Condensed Consolidated Financial Statements (Unaudited)

October 1, 2022

(Amounts in thousands, except share data)

L.    Per Share Amounts and Common and Redeemable Shares Outstanding

We calculate our basic earnings per share by dividing net income or net loss by the weighted average number of common shares outstanding during the period. Diluted earnings per share are calculated in a similar manner, but include the effect of dilutive securities. To the extent these securities are antidilutive, they are excluded from the calculation of earnings per share. The per share amounts were computed as follows:

			Three Months Ended												Nine Months Ended
			October 1, 2022						October 2, 2021						October 1, 2022						October 2, 2021
Income available to common shareholders:
Net income			$	20,464					$	24,927					$	49,031					$	57,897
Weighted-average shares (in thousands):
Basic:
Outstanding			43,920						44,885						44,194						45,257
Partially-paid share subscriptions			228						—						228						—
Basic weighted-average shares			44,148						44,885						44,422						45,257
Diluted:
Basic from above			44,148						44,885						44,422						45,257
Incremental shares from assumed:
Exercise of stock options and awards			2,257						3,066						2,297						2,528
Diluted weighted-average shares			46,405						47,951						46,719						47,785
Net income per share:
Basic			$	.46					$	.56					$	1.10					$	1.28
Diluted			$	.44					$	.52					$	1.05					$	1.21

Common and Redeemable Shares Outstanding--A summary of the activity of the common and redeemable shares outstanding for the nine months ended October 1, 2022 was as follows:

			Common Shares Net of Treasury Shares						Redeemable Shares						Total
Shares outstanding at January 1, 2022			35,110,432						9,391,790						44,502,222
Shares purchased			(1,646,735)						(881,136)						(2,527,871)
Shares sold			472,110						777,725						1,249,835
Stock subscription offering -- cash purchases			152,800						—						152,800
Options and awards exercised			368,402						—						368,402
Shares outstanding at October 1, 2022			34,457,009						9,288,379						43,745,388

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Index

The Davey Tree Expert Company

Notes to Condensed Consolidated Financial Statements (Unaudited)

October 1, 2022

(Amounts in thousands, except share data)

On October 1, 2022, we had 43,745,388 common and redeemable shares outstanding, employee options exercisable to purchase 1,725,879 common shares, partially-paid subscriptions for 1,318,450 common shares and purchase rights outstanding for 487,488 common shares.

Common Stock Split--On September 17, 2021, our board of directors approved and declared a two-for-one stock split in the form of a stock dividend, pursuant to which each of our shareholders of record at the close of business on October 1, 2021 received one additional common share for each then-held common share, which was paid on October 15, 2021. On September 20, 2021, in connection with the stock split, the Company filed a Certificate of Amendment to its 2017 Amended Articles of Incorporation with the Secretary of State of the State of Ohio, which became effective upon filing and (1) proportionately increased the authorized number of common shares from 48,000,000 to 96,000,000 and (2) proportionately decreased the par value of our common shares from $1.00 per share to $.50 per share.

2022 Subscription Offering

Beginning April 2022, the Company offered to eligible employees and nonemployee directors the right to subscribe to a maximum of 2,666,667 common shares of the Company (including shares that may be issued upon the exercise of stock rights) at $18.10 per share in accordance with the provisions of The Davey Tree Expert Company 2014 Omnibus Stock Plan and the rules of the Compensation Committee of the Company’s Board of Directors. The offering period ended on August 1, 2022 and resulted in the subscription of 1,476,250 common shares for $26,720 at $18.10 per share.

Participants in the subscription offering who purchased common shares for an aggregate purchase price of less than $5 were required to pay with cash. All participants (excluding Company directors and officers) purchasing common shares for an aggregate purchase price of $5 or more had an option to finance their purchase through a down-payment of at least 10% of the total purchase price and a seven-year promissory note for the balance due with interest at the greater of 2.00% or the applicable federal rate in effect as of August 1, 2022, which was 3.15%. Payments on the promissory note can be made either by payroll deductions or annual lump-sum payments of both principal and interest. Common shares purchased in the offering were pledged as security for the payment of the promissory note, and the common shares will not be issued until the promissory note is paid-in-full. Dividends will be paid on all subscribed shares, subject to forfeiture to the extent that payment is not ultimately made for the shares.

All participants in the offering who purchased in excess of $5 of common shares were granted a "right" to purchase one additional common share at a price of $18.10 per share for every three common shares purchased in the offering. As a result of the stock subscription, rights to purchase 489,169 common shares were granted. Each right may be exercised at the rate of one-seventh per year and will expire seven years after the date that the right was granted. A purchaser may not exercise a right once he or she ceases to be the Company's employee or non-employee director, as applicable.

M.    Operations by Business Segment

We provide a wide range of arboricultural, horticultural, environmental and consulting services to residential, utility, commercial and government entities throughout the United States and Canada. We have two reportable operating segments organized by type or class of customer: Residential and Commercial, and Utility.

Residential and Commercial--Residential and Commercial provides services to our residential and commercial customers including: the treatment, preservation, maintenance, removal and planting of trees, shrubs and other plant life; the practice of landscaping, grounds

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Index

The Davey Tree Expert Company

Notes to Condensed Consolidated Financial Statements (Unaudited)

October 1, 2022

(Amounts in thousands, except share data)

maintenance, tree surgery, tree feeding and tree spraying; the application of fertilizer, herbicides and insecticides; and natural resource management and consulting, forestry research and development, and environmental planning.

Utility--Utility is principally engaged in providing services to our utility customers--investor-owned, municipal utilities, and rural electric cooperatives--including: the practice of line-clearing and vegetation management around power lines and rights-of-way and chemical brush control, natural resource management and consulting, forestry research and development, and environmental planning.

All other operating activities, including research, technical support and laboratory diagnostic facilities, are included in “All Other.”

Measurement of Segment Profit and Loss and Segment Assets--We evaluate performance and allocate resources based primarily on operating income and also actively manage business unit operating assets. Segment information, including reconciling adjustments, is presented consistent with the basis described in our 2021 Annual Report.    

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Index

The Davey Tree Expert Company

Notes to Condensed Consolidated Financial Statements (Unaudited)

October 1, 2022

(Amounts in thousands, except share data)

Segment information reconciled to the condensed consolidated financial statements was as follows:

			Utility						Residential and Commercial						All Other						Reconciling Adjustments									Consolidated
Three Months Ended October 1, 2022
Revenues			$	217,305					$	180,706					$	934					$	—								$	398,945
Income (loss) from operations			16,790						21,204						(4,033)						(948)			(a)						33,013
Interest expense																					(2,164)									(2,164)
Interest income																					303									303
Other income (expense), net																					(3,371)									(3,371)
Income before income taxes																														$	27,781
Segment assets, total			$	331,393					$	305,216					$	—					$	263,362		(b)						$	899,971
Three Months Ended October 2, 2021
Revenues			$	204,960					$	164,737					$	547					$	—								$	370,244
Income (loss) from operations			23,124						17,595						(2,701)						(1,085)			(a)						36,933
Interest expense																					(1,449)									(1,449)
Interest income																					39									39
Other income (expense), net																					(2,298)									(2,298)
Income before income taxes																														$	33,225
Segment assets, total			$	286,157					$	278,847					$	—					$	210,709		(b)						$	775,713
Nine Months Ended October 1, 2022
Revenues			$	637,900					$	504,064					$	1,584					$	—								$	1,143,548
Income (loss) from operations			49,260						50,759						(14,852)						(5,665)			(a)						79,502
Interest expense																					(5,312)									(5,312)
Interest income																					489									489
Other income (expense), net																					(8,241)									(8,241)
Income before income taxes																														$	66,438
Segment assets, total			$	331,393					$	305,216					$	—					$	263,362		(b)						$	899,971
Nine Months Ended October 2, 2021
Revenues			$	557,349					$	465,524					$	1,668					$	—								$	1,024,541
Income (loss) from operations			50,015						51,893						(11,367)						(2,610)			(a)						87,931
Interest expense																					(4,093)									(4,093)
Interest income																					161									161
Other income (expense), net																					(5,548)									(5,548)
Income before income taxes																														$	78,451
Segment assets, total			$	286,157					$	278,847					$	—					$	210,709		(b)						$	775,713

Reconciling adjustments from segment reporting to the condensed consolidated financial statements include unallocated corporate items:

(a)Reclassification of depreciation expense and allocation of corporate expenses.

(b)Corporate assets include cash, prepaid expenses, corporate facilities, enterprise-wide information systems and other nonoperating assets. 

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Index

The Davey Tree Expert Company

Notes to Condensed Consolidated Financial Statements (Unaudited)

October 1, 2022

(Amounts in thousands, except share data)

N.    Revenue Recognition

We recognize revenue in accordance with ASC Topic 606, Revenue from Contracts with Customers.

Nature of Performance Obligations and Significant Judgments

At contract inception, the Company assesses the goods and services promised in its contracts with customers and identifies a performance obligation for each promised good or service (or bundle of goods and services) that is distinct. To identify the performance obligations, the Company considers each of the goods or services promised in the contract regardless of whether they are explicitly stated or are implied by customary business practices.

Our contracts with our customers generally originate upon the completion of a quote for services for residential and commercial customers or the receipt of a purchase order (or similar work order) for utility customers. In some cases, our contracts are governed by master services agreements, in which case our contract under ASC 606 consists of the combination of the master services agreement and the quote/purchase order. Many of our contracts have a stated duration of one year or less or contain termination clauses that allow the customer to cancel the contract after a specified notice period, which is typically less than 90 days. Due to the fact that many of our arrangements allow the customer to terminate for convenience, the duration of the contract for revenue recognition purposes generally does not extend beyond the services that we have actually transferred. As a result, many of our contracts are, in effect, day-to-day or month-to-month contracts.

Disaggregation of Revenue

The following tables disaggregate our revenue for the three and nine months ended October 1, 2022 and October 2, 2021 by major sources:

Three Months Ended October 1, 2022						Utility						Residential and Commercial						All Other						Consolidated
Type of service:
Tree and plant care						$	138,112					$	105,108					$	(28)					$	243,192
Grounds maintenance						—						46,056						—						46,056
Storm damage services						7,004						2,564						—						9,568
Consulting and other						72,189						26,978						962						100,129
Total revenues						$	217,305					$	180,706					$	934					$	398,945
Geography:
United States						$	207,004					$	168,405					$	934					$	376,343
Canada						10,301						12,301						—						22,602
Total revenues						$	217,305					$	180,706					$	934					$	398,945

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Index

The Davey Tree Expert Company

Notes to Condensed Consolidated Financial Statements (Unaudited)

October 1, 2022

(Amounts in thousands, except share data)

Three Months Ended October 2, 2021						Utility						Residential and Commercial						All Other						Consolidated
Type of service:
Tree and plant care						$	140,039					$	96,961					$	(29)					$	236,971
Grounds maintenance						—						40,452						—						40,452
Storm damage services						10,052						2,688						—						12,740
Consulting and other						54,869						24,636						576						80,081
Total revenues						$	204,960					$	164,737					$	547					$	370,244
Geography:
United States						$	194,140					$	153,009					$	547					$	347,696
Canada						10,820						11,728						—						22,548
Total revenues						$	204,960					$	164,737					$	547					$	370,244
Nine Months Ended October 1, 2022						Utility						Residential and Commercial						All Other						Consolidated
Type of service:
Tree and plant care						$	420,791					$	294,206					$	(155)					$	714,842
Grounds maintenance						—						128,114						—						128,114
Storm damage services						10,136						6,162						—						16,298
Consulting and other						206,973						75,582						1,739						284,294
Total revenues						$	637,900					$	504,064					$	1,584					$	1,143,548
Geography:
United States						$	608,411					$	469,042					$	1,584					$	1,079,037
Canada						29,489						35,022						—						64,511
Total revenues						$	637,900					$	504,064					$	1,584					$	1,143,548
Nine Months Ended October 2, 2021						Utility						Residential and Commercial						All Other						Consolidated
Type of service:
Tree and plant care						$	393,742					$	271,682					$	(224)					$	665,200
Grounds maintenance						—						116,810						—						116,810
Storm damage services						13,997						5,486						—						19,483
Consulting and other						149,610						71,546						1,892						223,048
Total revenues						$	557,349					$	465,524					$	1,668					$	1,024,541
Geography:
United States						$	525,818					$	432,158					$	1,668					$	959,644
Canada						31,531						33,366						—						64,897
Total revenues						$	557,349					$	465,524					$	1,668					$	1,024,541

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Index

The Davey Tree Expert Company

Notes to Condensed Consolidated Financial Statements (Unaudited)

October 1, 2022

(Amounts in thousands, except share data)

Contract Balances

Our contract liabilities consist of advance payments and billings in excess of costs incurred and deferred revenue. The Company recognized $616 and $1,676 of revenue for the three and nine months ended October 1, 2022, that was included in the contract liability balance at December 31, 2021 and $239 and $1,294 of revenue for the three and nine months ended October 2, 2021, that was included in the contract liability balance at December 31, 2020. Net contract liabilities consisted of the following:

			October 1, 2022						December 31, 2021
Contract liabilities - current			$	4,599					$	3,888
Contract liabilities - noncurrent			1,951						1,845
Net contract liabilities			$	6,550					$	5,733

O.    Fair Value Measurements and Financial Instruments

FASB ASC 820, “Fair Value Measurements and Disclosures" (“Topic 820”) defines fair value based on the price that would be received to sell an asset or the exit price that would be paid to transfer a liability in an orderly transaction between market participants at the measurement date. Market participants are defined as buyers or sellers in the principal or most advantageous market for the asset or liability that are independent of the reporting entity, knowledgeable and able and willing to transact for the asset or liability.

Valuation Hierarchy--Topic 820 establishes a fair value hierarchy that prioritizes observable and unobservable inputs used to measure fair value. The hierarchy prioritizes the inputs into three broad levels:

Level 1 inputs are quoted prices in active markets for identical assets or liabilities that the entity has the ability to access.

Level 2 inputs are observable inputs other than prices included in Level 1, such as quoted prices for similar assets and liabilities in active markets; quoted prices for identical or similar assets and liabilities in markets that are not active; or other inputs that are observable or can be corroborated with observable market data.

Level 3 inputs are unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets and liabilities. This includes certain pricing models, discounted cash flow methodologies and similar techniques that use significant unobservable inputs.

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Index

The Davey Tree Expert Company

Notes to Condensed Consolidated Financial Statements (Unaudited)

October 1, 2022

(Amounts in thousands, except share data)

Our assets and liabilities measured at fair value on a recurring basis at October 1, 2022 were as follows:

												Fair Value Measurements at October 1, 2022 Using:
Assets and Liabilities Recorded at Fair Value on a Recurring Basis						Total Carrying Value at October 1, 2022						Quoted Prices in Active Markets (Level 1)						Significant Other Observable Inputs (Level 2)						Significant Unobservable Inputs (Level 3)
Assets:
Assets invested for self-insurance
Certificates of deposits, current						$	4,000					$	4,000					$	—					$	—
Certificates of deposits, noncurrent						7,109						7,109						—						—
Available-for-sale debt securities:
United States Government and agency securities						20,261						20,261						—						—
Corporate notes and bonds						257						257						—						—
Total available-for-sale debt securities						20,518						20,518						—						—
Marketable equity securities:
Mutual funds						14,894						14,894						—						—
Corporate stocks						2,819						2,819						—						—
Exchange traded funds						1,133						1,133						—						—
Total marketable equity securities						18,846						18,846						—						—
Liabilities:
Deferred compensation						$	4,759					$	—					$	4,759					$	—

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Index

The Davey Tree Expert Company

Notes to Condensed Consolidated Financial Statements (Unaudited)

October 1, 2022

(Amounts in thousands, except share data)

Our assets and liabilities measured at fair value on a recurring basis at December 31, 2021 were as follows:

												Fair Value Measurements at December 31, 2021 Using:
Assets and Liabilities Recorded at Fair Value on a Recurring Basis						Total Carrying Value at December 31, 2021						Quoted Prices in Active Markets (Level 1)						Significant Other Observable Inputs (Level 2)						Significant Unobservable Inputs (Level 3)
Assets:
Assets invested for self-insurance
Certificates of deposits, current						$	4,250					$	4,250					$	—					$	—
Certificates of deposits, noncurrent						10,609						10,609						—						—
Available-for-sale debt securities:
United States Government and agency securities						3,230						3,230						—						—
Corporate notes and bonds						176						176						—						—
Total available-for-sale debt securities						3,406						3,406						—						—
Marketable equity securities:
Mutual funds						7,476						7,476						—						—
Corporate stocks						1,934						1,934						—						—
Exchange traded funds						1,976						1,976						—						—
Total marketable equity securities						11,386						11,386						—						—
Liabilities:
Deferred compensation						$	4,333					$	—					$	4,333					$	—

The assets invested for self-insurance are certificates of deposit, stocks, bonds, mutual funds and exchange traded funds--classified as Level 1--based on quoted market prices of the identical underlying securities in active markets. The estimated fair value of the deferred compensation--classified as Level 2--is based on the value of the Company's common shares, determined by independent valuation.

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Index

The Davey Tree Expert Company

Notes to Condensed Consolidated Financial Statements (Unaudited)

October 1, 2022

(Amounts in thousands, except share data)

Fair Value of Financial Instruments--The fair values of our current financial assets and current liabilities, including cash, accounts receivable, accounts payable, and accrued expenses, among others, approximate their reported carrying values because of their short-term nature. Financial instruments classified as noncurrent assets and liabilities and their carrying values and fair values were as follows:

						October 1, 2022												December 31, 2021
						Carrying Value						Fair Value						Carrying Value						Fair Value
Assets:
Available-for-sale debt securities						$	20,518					$	20,518					$	3,406					$	3,406
Marketable equity securities						18,846						18,846						11,386						11,386
Liabilities:
Revolving credit facility, noncurrent						$	98,099					$	98,099					$	46,832					$	46,832
Senior unsecured notes, noncurrent						75,000						73,396						75,000						78,432
Term loans, noncurrent						2,038						1,973						2,373						2,431
Total						$	175,137					$	173,468					$	124,205					$	127,695

The carrying value of our revolving credit facility approximates fair value--classified as Level 2--as the interest rates on the amounts outstanding are variable. The fair value of our senior unsecured notes and term loans--classified as Level 2--is determined based on expected future weighted-average interest rates with the same remaining maturities.

Market Risk--In the normal course of business, we are exposed to market risk related to changes in foreign currency exchange rates, changes in interest rates and changes in fuel prices. We do not hold or issue derivative financial instruments for trading or speculative purposes. In prior years, we have used derivative financial instruments to manage risk, in part, associated with changes in interest rates and changes in fuel prices. Presently, we are not engaged in any hedging or derivative activities.

P.    Commitments and Contingencies

We are party to a number of lawsuits, threatened lawsuits and other claims arising out of the normal course of business. On a quarterly basis, we assess our liabilities and contingencies in connection with outstanding legal proceedings utilizing the latest information available. Where it is probable that we will incur a loss and the amount of the loss can be reasonably estimated, we record a liability in our consolidated financial statements. These legal accruals may be increased or decreased to reflect any relevant developments on a quarterly basis. Where a loss is not probable or the amount of the loss is not estimable, we do not record a legal accrual, consistent with applicable accounting guidance. Based on information currently available to us, advice of counsel, and available insurance coverage, we believe that our established accruals are adequate and the liabilities arising from the legal proceedings will not have a material adverse effect on our consolidated financial condition. We note, however, that in light of the inherent uncertainty in legal proceedings, there can be no assurance that the ultimate resolution of a matter will not exceed established accruals. As a result, the outcome of a particular matter or a combination of matters may be material to our results of operations for a particular period, depending upon the size of the loss or our income for that particular period.

In November 2017, a suit was filed in Savannah, Georgia state court ("State Court") against Davey Tree, its subsidiary, Wolf Tree, Inc. ("Wolf Tree"), a former Davey employee, two Wolf Tree employees, and a former Wolf Tree employee alleging various acts of negligence

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The Davey Tree Expert Company

Notes to Condensed Consolidated Financial Statements (Unaudited)

October 1, 2022

(Amounts in thousands, except share data)

and seeking compensatory and punitive damages for wrongful death and assault and battery of the plaintiff’s husband, a Wolf Tree employee, who was shot and killed in August 2017.

In July 2018, a related survival action was filed by the deceased’s estate against Davey Tree, its subsidiary, Wolf Tree, and four current and former employees in Savannah, Georgia, which arises out of the same allegations, seeks compensatory and punitive damages and also includes three Racketeer Influenced and Corrupt Organizations Act ("RICO") claims under Georgia law seeking compensatory damages, treble damages, and punitive damages. The 2018 case was removed to the United States District Court for the Southern District of Georgia, Savannah Division ("Federal Court"), on August 2, 2018. The Company filed a motion to dismiss the RICO claims. Plaintiffs filed a motion to remand the case to state court, which the Company has opposed.

The cases were mediated unsuccessfully in December 2018 and the State Court case was originally set for trial on January 22, 2019. However, as discussed below, all of the civil cases were later stayed on December 28, 2018 and currently remain stayed.

On December 6, 2018, a former Wolf Tree employee pled guilty to conspiracy to conceal, harbor, and shield illegal aliens. On December 21, 2018, the United States federal prosecutors filed a motion to stay both actions on the grounds that on December 13, 2018, an indictment was issued charging two former Wolf Tree employees and another individual with various crimes, including conspiracy to murder the deceased. Two of the three individually charged defendants have pled guilty to charges related to their involvement with the murder and other illegal activities on March 28, 2022 and April 11, 2022. A third individual criminally charged defendant was scheduled to go to trial on October 25, 2022, and was convicted of charges for his role in the murder, harboring of illegal aliens; and money laundering conspiracy. All three criminal defendants have not yet been sentenced.

Previously, on December 17, 2018, the United States Attorney’s Office for the Southern District of Georgia informed the Company and Wolf Tree that they are also under investigation for potential violations of immigration and other laws relating to the subject matter of the ongoing criminal investigation referenced above. The Company and Wolf Tree are cooperating with the investigation and have met with both the civil and criminal divisions of the Department of Justice ("DOJ") to resolve the matter. To date, the matter currently remains unresolved.

On December 28, 2018, the State Court granted the United States’ motion to stay but indicated that it would nonetheless consider certain pending matters, including: (1) Plaintiff and a co-defendant’s motions that Davey Tree be forced to produce privileged documents and testimony, which had been submitted to a Special Master for recommendation; and (2) the Defendants’ motions for summary judgment. On January 11, 2019, the Special Master issued his recommendation that both Plaintiff and the co-defendant’s motions to force Davey to disclose privileged information be denied. The State Court judge has not yet moved on the recommendation. On January 29, 2019, the State Court heard oral argument on Defendants’ motions for summary judgment, and the motions remain pending during the stay of the cases.

On January 28, 2019, the Federal Court also granted the United States’ motion to stay. On January 29, 2019, the State Court ordered the parties to return to mediation, which occurred on April 17, 2019 but was unsuccessful in resolving the matters. All civil cases continue to remain stayed, although Plaintiffs' counsel has submitted a letter to the Court seeking a lift of the stay.

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The Davey Tree Expert Company

Notes to Condensed Consolidated Financial Statements (Unaudited)

October 1, 2022

(Amounts in thousands, except share data)

In both cases, the Company has denied all liability and is vigorously defending the action. It also has retained separate counsel for some of the individual defendants, each of whom has denied all liability and also is vigorously defending the action.

Northern California Wildfires

Five lawsuits have been filed that name contractors for PG&E Corporation and its subsidiary, Pacific Gas and Electric Company (together, "PG&E"), including Davey Tree, with respect to claims arising from wildfires that occurred in Pacific Gas and Electric Company’s service territory in northern California beginning on October 8, 2017. An action was brought on August 8, 2019 in Napa County Superior Court, entitled Donna Walker, et al. v. Davey Tree Surgery Company, et al., Case No. 19CV001194. An action was brought on October 8, 2019 in San Francisco County Superior Court, entitled Quinisha Kyree Abram, et al. v. ACRT, Inc., et. al, Case No. CGC-19-579861.

Three additional actions were brought on January 28, 2021 in San Francisco County Superior Court, by fire victims represented by a trust, which was assigned contractual rights in the PG&E bankruptcy proceedings. These cases are entitled John K. Trotter, Trustee of the PG&E Fire Victim Trust v. Davey Resource Group, Inc., et al., Case No. CGC-21-589438; John K. Trotter, Trustee of the PG&E Fire Victim Trust v. Davey Resource Group, Inc., et al., Case No. CGC-21-589439; and John K. Trotter, Trustee of the PG&E Fire Victim Trust v. ACRT Pacific, LLC, et al., Case No. CGC-21-589441. On September 22, 2021, the court granted Davey Tree's petition to coordinate all cases, including Walker, as a California Judicial Council Coordination Proceeding, In Re North Bay Fire Cases, JCCP No. 4955. As a result of the coordination order, all five of the individual actions are stayed in their home jurisdictions. The next case management conference in JCCP No. 4955 was held on February 24, 2022. At that case management conference, the Court ordered a mediation between the Plaintiffs and Davey Tree related to Davey Tree's contracts with PG&E. Separately, the court ordered that all parties shall participate in a mediation with the Plaintiffs prior to January 27, 2023. An initial mediation date for all the Plaintiffs and Davey Tree related to parties on the contractual issues was set for October 17, 2022 but did not resolve at this initial mediation.

The Defendants have also received evidence from the Plaintiff's Trust and PG&E collected by those parties during the PG&E bankruptcy proceedings and Davey Tree's experts have begun their initial inspection of the evidence. Davey Tree has responded to all claims asserted by the Plaintiffs in these actions, denying all liability in these cases and is vigorously defending against Plaintiffs' alleged claims.

In all cases, the Company denies all liability and will vigorously defend the actions.

Q.    The Davey 401KSOP and Employee Stock Ownership Plan

On March 15, 1979, the Company consummated a plan, which transferred control of the Company to its employees. As a part of this plan, the Company initially sold 120,000 common shares (presently, 46,080,000 common shares adjusted for stock splits) to its Employee Stock Ownership Trust (“ESOT”) for $2,700. The Employee Stock Ownership Plan (“ESOP”), in conjunction with the related ESOT, provided for the grant to certain employees of certain ownership rights in, but not possession of, the common shares held by the trustee of the ESOT. Annual allocations of shares have been made to individual accounts established for the benefit of the participants.

Defined Contribution and Savings Plans--Most employees are eligible to participate in The Davey 401KSOP and ESOP Plan. Effective January 1, 1997, the plan commenced operations and retained the existing ESOP participant accounts and incorporated a deferred savings plan (a “401(k) plan”) feature. Participants in the 401(k) plan are allowed to make before-tax contributions, within Internal Revenue Service established limits, through payroll deductions. Effective January 1, 2020, we match, in either cash or our common shares, 100% of

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The Davey Tree Expert Company

Notes to Condensed Consolidated Financial Statements (Unaudited)

October 1, 2022

(Amounts in thousands, except share data)

the first three percent and 50% of the next two percent of each participant's before-tax contribution, limited to the first five percent of the employee’s compensation deferred each year. All nonbargaining domestic employees who attained age 21 and completed one year of service are eligible to participate. In May 2004, we adopted the 401K Match Restoration Plan, a defined contribution plan that supplements the retirement benefits of certain employees that participate in the savings plan feature of The Davey 401KSOP and ESOP Plan, but are limited in contributions because of tax rules and regulations.

Our common shares are not listed or traded on an established public trading market, and market prices are, therefore, not available. Semiannually, an independent stock valuation firm assists with the appraisal of the fair market value of our common shares based upon our performance and financial condition. The Davey 401KSOP and ESOP Plan includes a put option for shares of the Company’s common stock distributed from the plan. Shares are distributed from the Davey 401KSOP and ESOP Plan to former participants of the plan, their beneficiaries, donees or heirs (each, a “participant”). Since our common stock is not currently traded on an established securities market, if the owners of distributed shares desire to sell their shares, the Company is required to purchase the shares at fair value for two 60-day periods after distribution of the shares from the Davey 401KSOP and ESOP. The fair value of distributed shares subject to the put option totaled $990 and $1,279 as of October 1, 2022 and December 31, 2021, respectively. The fair value of the shares held in the Davey 401KSOP and ESOP totaled $167,130 and $168,652 as of October 1, 2022 and December 31, 2021, respectively. Due to the Company’s obligation under the put option, the distributed shares subject to the put option and the shares held in the Davey 401KSOP and ESOP (collectively referred to as 401KSOP and ESOP related shares) are recorded at fair value, classified as temporary equity in the mezzanine section of the consolidated balance sheets and totaled $168,120 and $169,931 as of October 1, 2022 and December 31, 2021, respectively. Changes in the fair value of the 401KSOP and ESOP Plan related shares are reflected in retained earnings while net share activity associated with the 401KSOP and ESOP Plan related shares are first reflected in additional paid-in capital and then retained earnings if additional paid-in capital is insufficient.

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Item 2.Management's Discussion and Analysis of Financial Condition and Results of Operations.

(Amounts in thousands, except share data)

Management’s Discussion and Analysis of Financial Condition and Results of Operations is provided as a supplement to the accompanying condensed consolidated financial statements and notes to help provide an understanding of our financial condition, cash flows and results of operations.

We provide a wide range of arboricultural, horticultural, environmental and consulting services to residential, utility, commercial and government entities throughout the United States and Canada.

Our Business--Our operating results are reported in two segments organized by type or class of customer: Residential and Commercial, and Utility. Residential and Commercial provides services to our residential and commercial customers including: the treatment, preservation, maintenance, removal and planting of trees, shrubs and other plant life; the practice of landscaping, grounds maintenance, tree surgery, tree feeding and tree spraying; the application of fertilizer, herbicides and insecticides; and natural resource management and consulting, forestry research and development, and environmental planning. Utility is principally engaged in providing services to our utility customers--investor-owned, municipal utilities, and rural electric cooperatives--including: the practice of line-clearing and vegetation management around power lines and rights-of-way and chemical brush control, natural resource management and consulting, forestry research and development, and environmental planning. All other operating activities, including research, technical support and laboratory diagnostic facilities, are included in "All Other."

Impact of COVID-19 and Recent Trends

While the coronavirus ("COVID-19") pandemic did not have a material adverse effect on our reported results for the first nine months of 2022, the overall extent and duration of the impact of COVID-19 on businesses and economic activity generally remains unclear due to the inherent uncertainty surrounding COVID-19, given its continual evolution.

We have taken steps to support our employees and protect their health and safety, while also ensuring that our business can continue to operate and provide services to our customers. We continue to provide additional administrative leave for employees affected by COVID-19 directly or indirectly. During the second and third quarters of 2021, we began to bring employees back to our corporate headquarters on a limited basis with increased safety protocols and in compliance with public health and government guidance and also began to lift travel restrictions in situations where necessary. In the first nine months of 2022, we incurred expenses of $1,530 as a result of the COVID-19 pandemic mainly for administrative leave and personal protective equipment.

Our business continues to be impacted by a number of other macro-economic factors, in addition to the trailing impact of the COVID-19 pandemic. Global supply chains and product availability remain highly challenged and ongoing global events in Eastern Europe have only exacerbated an already difficult operating environment. These factors, combined with higher fuel costs, increasing interest rates and a highly competitive labor market, have created an inflationary environment and cost pressures.

In regard to consumer demand, since the onset of the COVID-19 pandemic, our business has experienced an increase in demand and sales. It remains unclear, however, if these demand trends will remain intact or if they will revert to more historical levels over time, particularly as inflation begins to impact discretionary spending.

Inflation rates in the markets in which we operate have increased and may continue to rise. Inflation over the last several months has led us to experience higher costs, including higher labor costs and costs for materials from suppliers and transportation costs, and, in the

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competitive markets in which we operate, we may not be able to increase our prices correspondingly to preserve our gross margins and profitability. If inflation rates continue to rise or remain elevated for a sustained period of time, they could have a material adverse effect on our business, financial condition, results of operations and liquidity. We have generally been able to offset increases in these costs through various productivity and cost reduction initiatives, as well as adjusting our prices to pass through some of these higher costs to our customers; however, our ability to raise our prices depends on market conditions and competitive dynamics. Given the timing of our actions compared to the timing of these inflationary pressures, there may be periods during which we are unable to fully recover the increases in our costs.

2022 Subscription Offering

The Company offered to eligible employees and nonemployee directors the right to subscribe to a maximum of 2,666,667 common shares of the Company at $18.10 per share in accordance with the provisions of The Davey Tree Expert Company 2014 Omnibus Stock Plan and the rules of the Compensation Committee of the Company’s Board of Directors. The offering period ended on August 1, 2022 and resulted in the subscription of 1,476,250 common shares for $26,720 at $18.10 per share. For additional information regarding the offering, see Note L, Per Share Amounts and Common and Redeemable Shares Outstanding.

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RESULTS OF OPERATIONS

The following table sets forth our consolidated results of operations as a percentage of revenues and the change in such percentages for the periods presented.

			Three Months Ended																		Nine Months Ended
			October 1, 2022						October 2, 2021						Change						October 1, 2022						October 2, 2021						Change
Revenues			100.0		%				100.0		%				—		%				100.0		%				100.0		%				—		%
Costs and expenses:
Operating			63.8						62.8						1.0						64.7						63.5						1.2
Selling			18.1						18.2						(.1)						17.6						17.5						.1
General and administrative			7.0						5.6						1.4						7.6						6.8						.8
Depreciation and amortization			3.5						3.8						(.3)						3.6						4.0						(.4)
Gain on sale of assets, net			(.7)						(.4)						(.3)						(.5)						(.4)						(.1)
Income from operations			8.3						10.0						(1.7)						7.0						8.6						(1.6)
Other income (expense):
Interest expense			(.5)						(.4)						(.1)						(.5)						(.4)						(.1)
Interest income			.1						—						.1						—						—						—
Other, net			(.9)						(.6)						(.3)						(.7)						(.5)						(.2)
Income before income taxes			7.0						9.0						(2.0)						5.8						7.7						(1.9)
Income taxes			1.9						2.3						(.4)						1.5						2.0						(.5)
Net income			5.1		%				6.7		%				(1.6)		%				4.3		%				5.7		%				(1.4)		%

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Third Quarter—Three Months Ended October 1, 2022 Compared to Three Months Ended October 2, 2021

Our results of operations for the three months ended October 1, 2022 compared to the three months ended October 2, 2021 were as follows:

			Three Months Ended
			October 1, 2022						October 2, 2021						Change						Percentage Change
Revenues			$	398,945					$	370,244					$	28,701					7.8		%
Costs and expenses:
Operating			254,661						232,599						22,062						9.5
Selling			72,364						67,353						5,011						7.4
General and administrative			27,964						20,739						7,225						34.8
Depreciation and amortization			13,780						14,127						(347)						(2.5)
Gain on sale of assets, net			(2,837)						(1,507)						(1,330)						88.3
			365,932						333,311						32,621						9.8
Income from operations			33,013						36,933						(3,920)						(10.6)
Other income (expense):
Interest expense			(2,164)						(1,449)						(715)						49.3
Interest income			303						39						264						676.9
Other, net			(3,371)						(2,298)						(1,073)						46.7
Income before income taxes			27,781						33,225						(5,444)						(16.4)
Income taxes			7,317						8,298						(981)						(11.8)
Net income			$	20,464					$	24,927					$	(4,463)					(17.9)		%

Revenues--Revenues of $398,945 increased $28,701 compared with $370,244 in the third quarter of 2021. Utility Services increased $12,345 or 6.0% compared with the third quarter of 2021. The increase was attributable to new accounts as well as increased work year-over-year and price increases on existing accounts. Residential and Commercial Services increased $15,969 or 9.7% from the third quarter of 2021. Increases were primarily in tree and plant care revenues and grounds maintenance revenue.

Operating Expenses--Operating expenses of $254,661 increased $22,062 compared with the third quarter of 2021. Utility Services increased $14,694 or 10.0% compared with the third quarter of 2021 and, as a percentage of revenue, increased to 73.7% from 71.0%. The increase was primarily attributable to additional expenses for labor and benefits expenses, fuel expense, crew meals and lodging expenses, subcontractor expense, and tools and parts expense. Residential and Commercial Services increased $6,994 or 8.1% compared with the third quarter of 2021 but, as a percentage of revenue, decreased to 51.6% from 52.4%. The increase was primarily attributable to increases in labor and benefits expenses, fuel expense, equipment maintenance expense, subcontractor expense, tools and parts expenses and materials expense.

Operating expenses for the third quarter of 2022 also included $617 of expenses related directly to COVID-19, including $608 for additional administrative leave offered to employees who have been unable to work due to COVID-19 imposed restrictions, whether from the virus itself or government imposed restrictions or closures. For the third quarter of 2021, the Company had $204 of expenses directly related to COVID-19.

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Fuel costs of $16,243 increased $4,807, or 42.0%, from the $11,436 incurred in the third quarter of 2021 and impacted operating expenses within all segments. The $4,807 increase included usage increases approximating $591 and price increases approximating $4,216.

Selling Expenses--Selling expenses of $72,364 increased $5,011 compared with the third quarter of 2021 but, as a percentage of revenue, decreased to 18.1% from 18.2%. Utility Services increased $3,517 or 15.6% compared to the third quarter of 2021 and, as a percentage of revenue, increased to 12.0% from 11.0%. The increase was primarily attributable to increases in field management wages and incentive expense. Residential and Commercial Services increased $2,052 or 4.5% from the third quarter of 2021 but, as a percentage of revenue, decreased to 26.4% from 27.7%. The increase was primarily attributable to increases in field management and sales wage expenses, marketing expenses and office rent.

General and Administrative Expenses--General and administrative expenses of $27,964 increased $7,225 from $20,739 in the third quarter of 2021. The increase was primarily attributable to increases in salary expense, and travel expenses and was partially offset by a decrease in professional services expense.

Depreciation and Amortization Expense--Depreciation and amortization expense of $13,780 decreased $347 from $14,127 incurred in the third quarter of 2021.

Gain on the Sale of Assets, Net--Gain on the sale of assets of $2,837 for the third quarter of 2022 increased $1,330 from the $1,507 gain in the third quarter of 2021. We sold a greater number of units of equipment at a higher average gain per unit in the third quarter of 2022 as compared with the third quarter of 2021.

Interest Expense--Interest expense of $2,164 increased $715 from the $1,449 incurred in the third quarter of 2021. The increase was attributable to higher average borrowing and higher interest rates during the third quarter of 2022, as compared with the third quarter of 2021.

Other, Net--Other expense, net, of $3,371 increased $1,073 from the $2,298 of other expense incurred in the third quarter of 2021 and consisted of nonoperating income and expense, including losses on marketable securities, pension expense and foreign currency transaction gains/losses on the intercompany account balances of our Canadian operations.

Income Taxes--Income taxes for the third quarter of 2022 were $7,317, as compared to $8,298 for the third quarter of 2021. Our tax provision for interim periods is determined using an estimate of our annual effective tax rate adjusted for discrete items, if any, that are taken into account in the relevant period. The effective tax rate for the third quarter of 2022 was 26.3% as compared with the third quarter of 2021 effective tax rate of 25.0%.

Net Income--Net income of $20,464 for the third quarter of 2022 was $4,463 less than the $24,927 net income for the third quarter of 2021.

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First Nine Months—Nine Months Ended October 1, 2022 Compared to Nine Months Ended October 2, 2021

Our results of operations for the nine months ended October 1, 2022 compared to the nine months ended October 2, 2021 were as follows:

			Nine Months Ended
			October 1, 2022						October 2, 2021						Change						Percentage Change
Revenues			$	1,143,548					$	1,024,541					$	119,007					11.6		%
Costs and expenses:
Operating			740,422						650,909						89,513						13.8
Selling			201,315						178,876						22,439						12.5
General and administrative			87,014						69,712						17,302						24.8
Depreciation and amortization			41,082						41,287						(205)						(.5)
Gain on sale of assets, net			(5,787)						(4,174)						(1,613)						38.6
			1,064,046						936,610						127,436						13.6
Income from operations			79,502						87,931						(8,429)						(9.6)
Other income (expense):
Interest expense			(5,312)						(4,093)						(1,219)						29.8
Interest income			489						161						328						203.7
Other, net			(8,241)						(5,548)						(2,693)						48.5
Income before income taxes			66,438						78,451						(12,013)						(15.3)
Income taxes			17,407						20,554						(3,147)						(15.3)
Net income			$	49,031					$	57,897					$	(8,866)					(15.3)		%

Revenues--Revenues of $1,143,548 increased $119,007 compared with $1,024,541 in the first nine months of 2021. Utility Services increased $80,551 or 14.5% compared with the first nine months of 2021. The increase was primarily attributable to new accounts, as well as increased work year-over-year on other accounts and price increases on existing accounts within both our U.S. and Canadian operations. Residential and Commercial Services increased $38,540 or 8.3% compared with the first nine months of 2021. Increases were primarily in tree and plant care revenue, consulting and other revenue and grounds maintenance revenue.

Operating Expenses--Operating expenses of $740,422 increased $89,513 compared with the first nine months of 2021 and, as a percentage of revenue, increased to 64.7% from 63.5%. Utility Services increased $65,742 or 16.3% compared with the first nine months of 2021 and, as a percentage of revenue, increased to 73.6% from 72.5%. The increase was attributable to increases in labor and benefits expense, fuel expense, equipment expense, materials expense, crew meals and lodging expenses, tools and parts expense and subcontractor expense. Residential and Commercial Services increased $23,107 or 9.5% compared with the first nine months of 2021 and, as a percentage of revenue, increased to 53.0% from 52.5%. The increase was primarily attributable to increases in labor and benefits expense, fuel expense, equipment expense, tool expense, subcontractor expense and materials expense.

Operating expenses for the first nine months of 2022 also included $1,530 of expenses related directly to COVID-19, including $1,322 for additional administrative leave offered to employees who were unable to work due to COVID-19-related restrictions. For the first nine months of 2021, the Company had $1,058 of expenses directly related to COVID-19.

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Fuel costs of $45,379 increased $15,409, or 51.4%, from the $29,970 incurred in the first nine months of 2021 and impacted operating expenses within all segments. The $15,409 increase included usage increases approximating $1,609 and price increases approximating $13,800.

Selling Expenses--Selling expenses of $201,315 increased $22,439 compared with the first nine months of 2021 and, as a percentage of revenue, increased to 17.6% from 17.5%. Utility Services increased $12,797 or 20.6% compared to the first nine months of 2021 and, as a percentage of revenue, increased to 11.8% from 11.2%. The increase was primarily attributable to increases in field management wages and field management travel expense. Residential and Commercial Services experienced an increase of $9,843 or 8.2% compared to the first nine months of 2021 but, as a percentage of revenue, remained at 25.7%. The increase was primarily attributable to increases in field management wages and incentive expense, travel expense, marketing expense and rent expense.

General and Administrative Expenses--General and administrative expenses of $87,014 increased $17,302 from $69,712 in the first nine months of 2021. The increase was primarily attributable to increases in salary and incentive expense and travel expense.

Depreciation and Amortization Expense--Depreciation and amortization expense of $41,082 decreased $205 from $41,287 incurred in the first nine months of 2021.

Gain on the Sale of Assets, Net--Gain on the sale of assets of $5,787 for the first nine months of 2022 increased $1,613 from the $4,174 gain in the first nine months of 2021. We sold more units of equipment at a higher average gain per unit during the first nine months of 2022 as compared with the first nine months of 2021.

Interest Expense--Interest expense of $5,312 increased $1,219 from the $4,093 incurred in the first nine months of 2021. The increase was attributable to higher average borrowing and increased interest rates during the first nine months of 2022, as compared with the first nine months of 2021.

Other, Net--Other expense, net, of $8,241 increased $2,693 from the $5,548 expense incurred in the first nine months of 2021 and consisted of nonoperating income and expense, including losses on marketable securities, pension expense and foreign currency gains/losses on the intercompany account balances of our Canadian operations.

Income Taxes--Income taxes for the first nine months of 2022 were $17,407, as compared to $20,554 for the first nine months of 2021. Our tax provision for interim periods is determined using an estimate of our annual effective tax rate adjusted for discrete items, if any, that are taken into account in the relevant period. The effective tax rate for the first nine months of 2022 was 26.2%. Our effective tax rate for the first nine months of 2021 was 26.2%. The change in the effective tax rate from statutory tax rates was primarily due to the impact of state and local taxes, which was partially offset by favorable discrete items.

Net Income--Net income of $49,031 for the first nine months of 2022 was $8,866 less than the net income of $57,897 for the first nine months of 2021.

LIQUIDITY AND CAPITAL RESOURCES

Our principal financial requirements are for capital spending, working capital and business acquisitions. Cash generated from operations, our revolving credit facility and note issuances are our primary sources of capital. We also engaged in a subscription offering of our common shares to eligible employees and nonemployee directors, which closed tn the third quarter of 2022 and resulted in the subscription of 1,476,250 common shares for $26,720 at $18.10 per share.

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Cash Flow Summary

Our cash flows from operating, investing and financing activities for the nine months ended October 1, 2022 and October 2, 2021 were as follows:

			Nine Months Ended
			October 1, 2022						October 2, 2021
Cash provided by (used in):
Operating activities			$	62,980					$	57,401
Investing activities			(95,608)						(59,777)
Financing activities			36,183						19,192
Effect of exchange rate changes on cash			(171)						40
Increase in cash			$	3,384					$	16,856

Cash Provided By Operating Activities--Cash provided by operating activities was $62,980 for the first nine months of 2022, a $5,579 increase when compared to the first nine months of 2021. The $5,579 increase in operating cash flow was primarily attributable to a change of $22,180 related to accounts payable and accrued expenses, and the change of $8,111 related to other operating assets and liabilities, partially offset by the change of $19,183 related to accounts receivable.

Overall, accounts receivable increased $49,451 during the first nine months of 2022, as compared to an increase of $30,268 during the first nine months of 2021. With respect to the change in accounts receivable arising from business levels, the “days-sales-outstanding” in accounts receivable (sometimes referred to as “DSO”) at the end of the first nine months of 2022 increased by five days to 75 days, compared to 70 days at the end of the first nine months of 2021.

Accounts payable and accrued expenses increased $12,709 in the first nine months of 2022, a change of $22,180 compared to the $9,471 decrease in the first nine months of 2021. The change was primarily related to the timing of estimated income tax payments and employer payroll taxes payable as well as compensated absence accruals. Self-insurance accruals increased $13,306 in the first nine months of 2022, which was $265 more than the increase of $13,041 experienced in the first nine months of 2021. The increase was attributable to increased exposures within our workers compensation, general liability and vehicle liability lines of coverage.

Other operating assets and liabilities increased $7,710 in the first nine months of 2022, a change of $8,111 compared to the $401 decrease in the first nine months of 2021. The change was primarily attributable to cloud computing arrangements.

Cash Used In Investing Activities--Cash used in investing activities for the first nine months of 2022 was $95,608, a $35,831 increase when compared to the first nine months of 2021. The increase was primarily the result of increases in purchases of equipment and land and buildings and marketable securities, partially offset by a decrease in purchases of businesses.

Cash Provided By Financing Activities--Cash provided by financing activities was $36,183 during the first nine months of 2022, a change of $16,991 as compared with the $19,192 provided during the first nine months of 2021. During the first nine months of 2022, our revolving credit facility, net provided $51,267 in cash as compared with $33,478 provided during the first nine months of 2021. We use the credit facility primarily for capital expenditures, redemptions of shares and payments of notes payable related to acquisitions. Notes payable increased $6,735 during the first nine months of 2022, a decrease of $3,346 when compared to the $10,081 increase in the first nine months of 2021. Treasury share transactions (purchases and sales) used $16,824 for the first nine months of 2022, $2,728 more than the $19,552 used in the first nine months of 2021. Dividends paid of $2,682 during the first nine months of 2022 increased $555 as

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compared with $2,127 paid in the first nine months of 2021, in part due to the increase in dividend paid per share implemented during the fourth quarter of 2021 and the second quarter of 2022.

The Company currently repurchases common shares at shareholders’ requests in accordance with the terms of the Davey 401KSOP and ESOP Plan and also repurchases common shares from time to time at the Company’s discretion. The amount of common shares offered to the Company for repurchase by the holders of shares distributed from the Davey 401KSOP and ESOP Plan is not within the control of the Company, but is at the discretion of the shareholders. The Company expects to continue to repurchase its common shares, as offered by its shareholders from time to time, at their then current fair value. However, other than for repurchases pursuant to the put option under the Davey 401KSOP and ESOP Plan, as described in Note Q, such purchases are not required, and the Company retains the right to discontinue them at any time. Repurchases of redeemable common shares at shareholders' request approximated $12,814 and $6,860 during the nine months ended October 1, 2022 and October 2, 2021, respectively. Share repurchases, other than redeemable common shares, approximated $33,053 and $29,647 during the nine months ended October 1, 2022 and October 2, 2021, respectively.

Contractual Obligations Summary and Commercial Commitments

As of October 1, 2022, total commitments related to issued letters of credit were $94,509, of which $2,700 were issued under the revolving credit facility, $89,689 were issued under the AR Securitization program, and $2,120 were issued under short-term lines of credit. As of December 31, 2021, total commitments related to issued letters of credit were $88,362, of which $2,877 were issued under the revolving credit facility, $83,355 were issued under the AR Securitization program, and $2,130 were issued under short-term lines of credit.

Also, as is common in our industry, we have performance obligations that are supported by surety bonds, which expire during 2022 through 2026. We intend to renew the surety bonds where appropriate and as necessary.

Capital Resources

Cash generated from operations, our revolving credit facility and note issuances are our primary sources of capital.

Business seasonality traditionally results in higher revenues during the second and third quarters as compared with the first and fourth quarters of the year, while our methods of accounting for fixed costs, such as depreciation and amortization expense, rent and interest expense, are not significantly impacted by business seasonality. Capital resources during these periods are equally affected. We satisfy seasonal working capital needs and other financing requirements with the revolving credit facility and other short-term lines of credit. We continually review our existing sources of financing and evaluate alternatives. At October 1, 2022, we had working capital of $171,930, short-term lines of credit approximating $8,971 and $224,201 available under our revolving credit facility.

For more information regarding our outstanding debt, see Note G, Short and Long-Term Debt and Commitments Related to Letters of Credit.

We believe our sources of capital, at this time, provide us with the financial flexibility to meet our capital-spending plans and to continue to complete business acquisitions for at least the next twelve months and for the reasonably foreseeable future.

CRITICAL ACCOUNTING POLICIES AND ESTIMATES

Our consolidated financial statements are prepared in accordance with accounting principles generally accepted in the United States. The preparation of these financial statements requires the use of estimates, judgments and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the periods presented.

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As discussed in our 2021 annual report, we believe that our policies related to revenue recognition, the allowance for credit losses, stock valuation and self-insurance accruals are our “critical accounting policies and estimates”--those most important to the financial presentations and those that require the most difficult, subjective or complex judgments.

On an ongoing basis, we evaluate our estimates and assumptions, including those related to accounts receivable, specifically those receivables under contractual arrangements primarily with Utility customers; allowance for credit losses; and self-insurance accruals. We base our estimates on historical experience and on various other factors that we believe to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results could differ from these estimates. Our critical accounting policies have not changed materially from those discussed in our 2021 Annual Report.

NOTE REGARDING FORWARD-LOOKING STATEMENTS

This quarterly report on Form 10-Q contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, as amended. These statements relate to future events or our future financial performance. In some cases, forward-looking statements may be identified by terminology such as "may," "will," "should," "could," "might," "expects," "plans," "anticipates," "believes," "estimates," "seeks," "predicts," "potential," "would," "continue" or the negative of these terms or other comparable terminology. These statements are only predictions and involve known and unknown risks, uncertainties and other factors that may cause our or our industry's actual results, levels of activity, performance or achievements to differ materially from what is expressed or implied in these forward-looking statements, some of which have been, and may further be, exacerbated by the COVID-19 pandemic. Some important factors that could cause actual results to differ materially from those in the forward-looking statements or materially adversely affect our business, results of operations or financial condition include: the continued impact of the COVID-19 pandemic and the responses thereto; our inability to attract and retain a sufficient number of qualified employees for our field operations or qualified management personnel and increased wage rates that may result from our need to attract and retain employees; increases in the cost of obtaining adequate insurance, or the inadequacy of our self-insurance accruals or insurance coverages; inability to obtain, or cancellation of, third-party insurance coverage; the impact of wildfires in California and other areas, as well as other severe weather events and natural disasters, which events may worsen or increase due to the effects of climate change; payment delays or delinquencies resulting from financial difficulties of our significant customers, particularly utilities; the outcome of litigation and third-party and governmental regulatory claims against us; an increase in our operating expenses due to significant increases in fuel prices for extended periods of time, such as the recent increases and volatility arising from the effects of the Russia-Ukraine conflict; disruptions, delays or price increases within our supply chain; our ability to withstand intense competition; the effect of various economic factors that may adversely impact our customers’ spending and pricing for our services, including the impact of inflationary pressures, and impede our collection of accounts receivable; the impact of global climate change and related regulations; fluctuations in our quarterly results due to the seasonal nature of our business or changes in general and local economic conditions, among other factors; being contractually bound to an unprofitable contract; a disruption in our information technology systems, including a disruption related to cybersecurity, or the impact of costs incurred to comply with cybersecurity or data privacy regulations; damage to our reputation of quality, integrity and performance; limitations on our shareholders’ ability to sell their common shares due to the lack of public market for such shares; our ability to continue to declare cash dividends; our failure to comply with environmental laws resulting in significant liabilities, fines and/or penalties; difficulties obtaining surety bonds or letters of credit necessary to support our operations; uncertainties in the credit and financial markets, including the negative impacts of COVID-19 and the Russia-Ukraine conflict, supply chain shortages and disruptions, rising interest rates, labor shortages and inflationary cost pressures, among other factors, potentially limiting our access to capital; fluctuations in foreign currency exchange rates; significant

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increases in health care costs; the impact of corporate citizenship and environmental, social and governance matters and/or our reporting of such matters; our ability to successfully implement our new enterprise resource planning system in a cost-effective and timely manner; the impact of events such as natural disasters, public health epidemics or pandemics, such as COVID-19, terrorist attacks or other external events; and our inability to properly verify the employment eligibility of our employees.

Although we believe that the expectations reflected in the forward-looking statements are reasonable, we cannot guarantee future results, levels of activity, performance or achievements. We are under no duty to update any of the forward-looking statements after the date of this quarterly report on Form 10-Q to conform these statements to actual future results, except as required by applicable securities laws.

The factors described above, as well as other factors that may adversely impact our actual results, are discussed in "Part I - Item 1A. Risk Factors." of our 2021 annual report.

Item 3.Quantitative and Qualitative Disclosures about Market Risk.

While we have experience inflation and higher interest rates during 2022, there have been no material changes in our reported market risks or risk management policies since the filing of our 2021 Annual Report on Form 10-K, which was filed with the Securities and Exchange Commission on March 11, 2022.

Item 4.Controls and Procedures.

(a) Management’s Evaluation of Disclosure Controls and Procedures

As of the end of the period covered by this report, we carried out an evaluation, under the supervision and with the participation of our management, including our Chief Executive Officer and Chief Financial Officer, of the effectiveness of the design and operation of our disclosure controls and procedures (as defined in Rule 13a-15(e) under the Securities Exchange Act of 1934, as amended (the “Exchange Act”)). Based on that evaluation, our Chief Executive Officer and Chief Financial Officer concluded that the design and operation of our disclosure controls and procedures were effective at the reasonable assurance level as of the end of the period covered by this report in ensuring that information required to be disclosed in the reports that we file or submit under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission’s rules and forms and is accumulated and communicated to our management, including our Chief Executive Officer and our Chief Financial Officer, as appropriate to allow timely decisions regarding required disclosure.

(b) Changes in Internal Control over Financial Reporting

There were no changes in our internal control over financial reporting during the fiscal quarter ended October 1, 2022 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

Part II.    Other Information

Items 3, 4 and 5 are not applicable.

Item 1.    Legal Proceedings.

We are party to a number of lawsuits, threatened lawsuits and other claims arising out of the normal course of business. On a quarterly basis, we assess our liabilities and contingencies in connection with outstanding legal proceedings utilizing the latest information available. Where it is probable that we will incur a loss and the amount of the loss can be reasonably estimated, we record a liability in our consolidated financial statements. These legal accruals may be increased or decreased to reflect any relevant developments on a quarterly

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basis. Where a loss is not probable or the amount of the loss is not estimable, we do not record a legal accrual, consistent with applicable accounting guidance. Based on information currently available to us, advice of counsel, and available insurance coverage, we believe that our established accruals are adequate and the liabilities arising from the legal proceedings will not have a material adverse effect on our consolidated financial condition. We note, however, that in light of the inherent uncertainty in legal proceedings, there can be no assurance that the ultimate resolution of a matter will not exceed established accruals. As a result, the outcome of a particular matter or a combination of matters may be material to our results of operations for a particular period, depending upon the size of the loss or our income for that particular period.

In November 2017, a suit was filed in Savannah, Georgia state court ("State Court") against Davey Tree, its subsidiary, Wolf Tree, Inc. ("Wolf Tree"), a former Davey employee, two Wolf Tree employees, and a former Wolf Tree employee alleging various acts of negligence and seeking compensatory and punitive damages for wrongful death and assault and battery of the plaintiff’s husband, a Wolf Tree employee, who was shot and killed in August 2017.

In July 2018, a related survival action was filed by the deceased’s estate against Davey Tree, its subsidiary, Wolf Tree, and four current and former employees in Savannah, Georgia, which arises out of the same allegations, seeks compensatory and punitive damages and also includes three Racketeer Influenced and Corrupt Organizations Act ("RICO") claims under Georgia law seeking compensatory damages, treble damages, and punitive damages. The 2018 case was removed to the United States District Court for the Southern District of Georgia, Savannah Division ("Federal Court"), on August 2, 2018. The Company filed a motion to dismiss the RICO claims. Plaintiffs filed a motion to remand the case to state court, which the Company has opposed.

The cases were mediated unsuccessfully in December 2018 and the State Court case was originally set for trial on January 22, 2019. However, as discussed below, all of the civil cases were later stayed on December 28, 2018 and currently remain stayed.

On December 6, 2018, a former Wolf Tree employee pled guilty to conspiracy to conceal, harbor, and shield illegal aliens. On December 21, 2018, the United States federal prosecutors filed a motion to stay both actions on the grounds that on December 13, 2018, an indictment was issued charging two former Wolf Tree employees and another individual with various crimes, including conspiracy to murder the deceased. Two of the three individually charged defendants have pled guilty to charges related to their involvement with the murder and other illegal activities on March 28, 2022 and April 11, 2022. A third individual criminally charged defendant was scheduled to go to trial on October 25, 2022, and was convicted of charges for his role in the murder, harboring of illegal aliens; and money laundering conspiracy. All three criminal defendants have not yet been sentenced.

Previously, on December 17, 2018, the United States Attorney’s Office for the Southern District of Georgia informed the Company and Wolf Tree that they are also under investigation for potential violations of immigration and other laws relating to the subject matter of the ongoing criminal investigation referenced above. The Company and Wolf Tree are cooperating with the investigation and have met with both the civil and criminal divisions of the Department of Justice ("DOJ") to resolve the matter. To date, the matter currently remains unresolved.

On December 28, 2018, the State Court granted the United States’ motion to stay but indicated that it would nonetheless consider certain pending matters, including: (1) Plaintiff and a co-defendant’s motions that Davey Tree be forced to produce privileged documents and testimony, which had been submitted to a Special Master for recommendation; and (2) the Defendants’ motions for summary judgment. On January 11, 2019, the Special Master issued his recommendation that both Plaintiff and the co-defendant’s motions to force Davey to disclose privileged information be denied. The State Court judge has not yet moved on the recommendation. On January 29, 2019, the

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State Court heard oral argument on Defendants’ motions for summary judgment, and the motions remain pending during the stay of the cases.

On January 28, 2019, the Federal Court also granted the United States’ motion to stay. On January 29, 2019, the State Court ordered the parties to return to mediation, which occurred on April 17, 2019 but was unsuccessful in resolving the matters. All civil cases continue to remain stayed, although Plaintiffs' counsel has submitted a letter to the Court seeking a lift of the stay.

In both cases, the Company has denied all liability and is vigorously defending the action. It also has retained separate counsel for some of the individual defendants, each of whom has denied all liability and also is vigorously defending the action.

Northern California Wildfires

Five lawsuits have been filed that name contractors for PG&E Corporation and its subsidiary, Pacific Gas and Electric Company (together, "PG&E"), including Davey Tree, with respect to claims arising from wildfires that occurred in Pacific Gas and Electric Company’s service territory in northern California beginning on October 8, 2017. An action was brought on August 8, 2019 in Napa County Superior Court, entitled Donna Walker, et al. v. Davey Tree Surgery Company, et al., Case No. 19CV001194. An action was brought on October 8, 2019 in San Francisco County Superior Court, entitled Quinisha Kyree Abram, et al. v. ACRT, Inc., et. al, Case No. CGC-19-579861.

Three additional actions were brought on January 28, 2021 in San Francisco County Superior Court, by fire victims represented by a trust, which was assigned contractual rights in the PG&E bankruptcy proceedings. These cases are entitled John K. Trotter, Trustee of the PG&E Fire Victim Trust v. Davey Resource Group, Inc., et al., Case No. CGC-21-589438; John K. Trotter, Trustee of the PG&E Fire Victim Trust v. Davey Resource Group, Inc., et al., Case No. CGC-21-589439; and John K. Trotter, Trustee of the PG&E Fire Victim Trust v. ACRT Pacific, LLC, et al., Case No. CGC-21-589441. On September 22, 2021, the court granted Davey Tree's petition to coordinate all cases, including Walker, as a California Judicial Council Coordination Proceeding, In Re North Bay Fire Cases, JCCP No. 4955. As a result of the coordination order, all five of the individual actions are stayed in their home jurisdictions. The next case management conference in JCCP No. 4955 was held on February 24, 2022. At that case management conference, the Court ordered a mediation between the Plaintiffs and Davey Tree related to Davey Tree's contracts with PG&E. Separately, the court ordered that all parties shall participate in a mediation with the Plaintiffs prior to January 27, 2023. An initial mediation date for all the Plaintiffs and Davey Tree related to parties on the contractual issues was set for October 17, 2022 but did not resolve at this initial mediation.

The Defendants have also received evidence from the Plaintiff's Trust and PG&E collected by those parties during the PG&E bankruptcy proceedings and Davey Tree's experts have begun their initial inspection of the evidence. Davey Tree has responded to all claims asserted by the Plaintiffs in these actions, denying all liability in these cases and is vigorously defending against Plaintiffs' alleged claims.

In all cases, the Company denies all liability and will vigorously defend the actions.

Item 1A.Risk Factors.

Our Annual Report on Form 10-K for the year ended December 31, 2021, includes a detailed discussion of our risk factors. Disclosure of risks should not be interpreted to imply that the risks have not already materialized. There have been no material changes to the risk factors described in the 2021 Annual Report during the nine months ended October 1, 2022.

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Item 2.    Unregistered Sales of Equity Securities and Use of Proceeds.

The following table provides information on purchases of our common shares outstanding made by us during the first nine months of 2022.

Period						Total Number of Shares Purchased (1)						Average Price Paid per Share						Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs						Maximum Number of Shares that May Yet Be Purchased Under the Plans or Programs
Fiscal 2022
January 1 to January 29						1,285						$	18.10					—						3,845,851
January 30 to February 26						5,620						18.10						—						3,845,851
February 27 to April 2						382,610						18.10						—						3,845,851
Total First Quarter						389,515						18.10						—
April 3 to April 30						321,122						18.10						—						3,845,851
May 1 to May 28						927,994						18.10						—						3,845,851
May 29 to July 2						397,888						18.10						—						3,845,851
Total Second Quarter						1,647,004						18.10						—
July 3 to July 30						16,083						18.10						—						3,845,851
July 31 to August 27						108,358						18.10						—						3,845,851
August 28 to October 1						366,911						18.10						—						3,845,851
Total Third Quarter						491,352						18.10						—
Total Year-to-Date						2,527,871						$	18.10					—
(1) During the nine months ended October 1, 2022, the Company purchased 2,527,871 shares from shareholders excluding those purchased through publicly announced plans. The Company provides a ready market for all shareholders through our direct purchase of their common shares although we are under no obligation to do so (other than for repurchases pursuant to the put option under The Davey 401KSOP and ESOP Plan).

Our common shares are not listed or traded on an established public trading market and market prices are, therefore, not available. Semiannually, for purposes of the Davey 401KSOP and ESOP, an independent stock valuation firm assists with the appraisal of the fair market value of the common shares, based upon our performance and financial condition, using a peer group of comparable companies selected by that firm. The peer group currently consists of: ABM Industries Incorporated; Comfort Systems USA, Inc.; Dycom Industries, Inc.; FirstService Corporation; MYR Group, Inc.; Quanta Services, Inc.; Rollins, Inc.; and Scotts Miracle-Gro Company. The semiannual valuations are effective for a period of six months and the per-share price established by those valuations is the price at which our Board of Directors has determined our common shares will be bought and sold during that six-month period in transactions involving Davey Tree or one of its employee benefit or stock purchase plans. Since 1979, we have provided a ready market for all shareholders through our direct purchase of their common shares, although we are under no obligation to do so (other than for repurchases pursuant to the put option under The Davey 401KSOP and ESOP Plan, as described in Note Q, The Davey 401KSOP and Employee Stock Ownership Plan). The purchases described above were added to our treasury stock.

At the Annual Meeting of Shareholders of the Company held on May 16, 2017, the shareholders of the Company approved proposals to amend the Company's Articles of Incorporation to (i) expand the Company's right of first refusal with respect to proposed transfers of shares of the Company's common shares, (ii) clarify provisions regarding when the Company may provide notice of its decision to exercise

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its right of first refusal with respect to proposed transfers of common shares by the estate or personal representative of a deceased shareholder, and (iii) grant the Company a right to repurchase common shares held by certain shareholders of the Company.

On May 10, 2017, the Board of Directors of the Company adopted a policy regarding the Company's exercise of the repurchase rights granted to the Company through amendments to the Company's Articles of Incorporation, as approved by shareholders on May 16, 2017.

Until further action by the Board, it is the policy of the Company not to exercise its repurchase rights under the amended Articles with respect to shares of the Company's common shares held by current and retired employees and current and former directors of the Company (subject to exceptions set forth in the policy) (collectively, "Active Shareholders"), their spouses, their first-generation descendants and trusts established exclusively for their benefit.

Until further action by the Board, it is also the policy of the Company not to exercise its rights under the amended Articles to repurchase shares of the Company's common shares proposed to be transferred by an Active Shareholder to his or her spouse, a first-generation descendant, or a trust established exclusively for the benefit of one or more of an Active Shareholder, his or her spouse and first-generation descendants of an Active Shareholder, or upon the death of an Active Shareholder, such transfers from the estate or personal representative of a deceased Active Shareholder. The Board may suspend, change or discontinue the policy at any time without prior notice.

In accordance with the amendments to the Articles approved by the Company's shareholders at the 2017 Annual Meeting, on May 17, 2017, the Company's Board of Directors authorized the Company to repurchase up to 400,000 common shares, which authorization was increased by an additional 2,000,000 common shares in May 2018 and increased further by an additional 3,000,000 common shares in September 2021. Of the 5,400,000 total shares authorized, 3,845,851 remained available under the program, as of October 1, 2022. Share repurchases may be made from time to time and the timing of any repurchases and the actual number of shares repurchased will depend on a variety of factors. The Company is not obligated to purchase any shares, and repurchases may be commenced, suspended or discontinued from time to time without prior notice. The repurchase program does not have an expiration date.

Item 6.Exhibits.

See the Exhibit Index below.

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Exhibits

Exhibit No.

Description

31.1

Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

Filed Herewith

31.2

Certification of Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

Filed Herewith

32.1

Certification of Chief Executive Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, 18 U.S.C. Section 1350.

Furnished Herewith

32.2

Certification of Chief Financial Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, 18 U.S.C. Section 1350.

Furnished Herewith

101

The following materials from the Company's Quarterly Report on Form 10-Q for the quarter ended October 1, 2022, formatted in iXBRL (inline eXtensible Business Reporting Language): (i) the Condensed Consolidated Balance Sheets (unaudited), (ii) the Condensed Consolidated Statements of Operations (unaudited), (iii) the Condensed Consolidated Statements of Comprehensive Income (unaudited), (iv) the Condensed Consolidated Statements of Shareholders' Equity (unaudited), (v) the Condensed Consolidated Statements of Cash Flows (unaudited), and (vi) Notes to Condensed Consolidated Financial Statements (unaudited). The instance document does not appear in the interactive data file because its XBRL tags are embedded within the inline XBRL document.

Filed Herewith

104

Cover Page Interactive Data File (embedded within the inline XBRL document)

Filed Herewith

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Signatures

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

THE DAVEY TREE EXPERT COMPANY

Date:

November 8, 2022

By:

/s/ Joseph R. Paul

Joseph R. Paul

Executive Vice President, Chief Financial Officer and Assistant Secretary

(Principal Financial Officer)

Date:

November 8, 2022

By:

/s/ Thea R. Sears

Thea R. Sears

Vice President and Controller

(Principal Accounting Officer)

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Exhibit 31.1

Certification

Certification of Chief Executive Officer

I, Patrick M. Covey, certify that:

1.I have reviewed this quarterly report on Form 10-Q of The Davey Tree Expert Company;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant's other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a)Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b)Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c)Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d)Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5.The registrant's other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of registrant's board of directors (or persons performing the equivalent functions):

(a)All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

(b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date:			November 8, 2022			/s/ Patrick M. Covey
						Patrick M. Covey
						Chairman, President and Chief Executive Officer

Exhibit 31.2

Certification

Certification of Chief Financial Officer

I, Joseph R. Paul, certify that:

1.I have reviewed this quarterly report on Form 10-Q of The Davey Tree Expert Company;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant's other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a)Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b)Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c)Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d)Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5.The registrant's other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of registrant's board of directors (or persons performing the equivalent functions):

(a)All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

(b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date:			November 8, 2022			/s/ Joseph R. Paul
						Joseph R. Paul
						Executive Vice President, Chief Financial Officer and Assistant Secretary

Exhibit 32.1

Certification Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

Certification of Chief Executive Officer

I, Patrick M. Covey, Chairman, President and Chief Executive Officer of The Davey Tree Expert Company (the "Company"), do hereby certify in accordance with 18 U.S.C. 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that to my knowledge:

1.    The Quarterly Report on Form 10-Q of the Company for the period ended October 1, 2022 (the "Report") fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 (15 U.S.C. 78m or 78o(d)), as applicable; and

2.    The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date:			November 8, 2022			/s/ Patrick M. Covey
						Patrick M. Covey
						Chairman, President and Chief Executive Officer

Exhibit 32.2

Certification Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

Certification of Chief Financial Officer

I, Joseph R. Paul, Executive Vice President, Chief Financial Officer and Assistant Secretary of The Davey Tree Expert Company (the "Company"), do hereby certify in accordance with 18 U.S.C. 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that to my knowledge:

1.    The Quarterly Report on Form 10-Q of the Company for the period ended October 1, 2022  (the "Report") fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 (15 U.S.C. 78m or 78o(d)), as applicable; and

2.    The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date:			November 8, 2022			/s/ Joseph R. Paul
						Joseph R. Paul
						Executive Vice President, Chief Financial Officer and Assistant Secretary

v3.22.2.2

Document and Entity Information Document - shares	9 Months Ended
	Oct. 01, 2022	Nov. 04, 2022
Entity Information [Line Items]
Entity registrant name	THE DAVEY TREE EXPERT COMPANY
Entity central index key	0000277638
Current fiscal year end date	--12-31
Entity filer category	Non-accelerated Filer
Document type	10-Q
Document fiscal year focus	2022
Document fiscal period focus	Q3
Amendment flag	false
Entity common stock, shares outstanding		42,921,611
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Entity small business	false

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v3.22.2.2

Cover Page Document - $ / shares	9 Months Ended
	Oct. 01, 2022	Nov. 04, 2022	Dec. 31, 2021
Document Information [Line Items]
Document type	10-Q
Document Quarterly Report	true
Document Transition Report	false
Entity file number	000-11917
Entity registrant name	THE DAVEY TREE EXPERT COMPANY
Entity current reporting status	Yes
Entity interactive data current	Yes
Entity common stock, shares outstanding		42,921,611
Common stock, par value per share	$ 0.50		$ 0.50
Document period end date	Oct. 01, 2022

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v3.22.2.2

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Entity address, address description	1500 North Mantua Street
Entity address, address line one	P.O. Box 5193
Entity address, city or town	Kent
Entity address, state	OH
Entity address, postal zip code	44240
City area code	330
Local phone number	673-9511

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v3.22.2.2

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v3.22.2.2

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Oct. 01, 2022	Dec. 31, 2021
Current assets:
Cash	$ 22,844	$ 19,460
Accounts receivable, net	326,291	278,280
Operating supplies	15,491	12,662
Other current assets	46,881	37,853
Total current assets	411,507	348,255
Property and equipment, net	262,701	227,985
Right-of-use assets - operating leases	95,350	86,423
Marketable securities and other investments	46,473	25,401
Other assets	14,304	17,264
Intangible assets, net	10,637	11,633
Goodwill	58,999	55,980
Total assets	899,971	772,941
Current liabilities:
Accounts payable	45,942	43,021
Accrued expenses	85,047	75,138
Current portion of long-term debt and finance lease liabilities	34,088	25,268
Other current liabilities	74,500	77,549
Total current liabilities	239,577	220,976
Long-term debt	174,579	123,531
Lease liabilities - finance leases	9,704	8,646
Lease liabilities - operating leases	62,586	57,335
Self-insurance accruals	96,487	77,099
Other noncurrent liabilities	12,181	11,583
Total liabilities	595,114	499,170
Redeemable common shares related to 401KSOP and Employee Stock Ownership Plan (ESOP) 9,288 and 9,392 shares at redemption value as of October 1, 2022 and December 31, 2021	168,120	169,931
Common shareholders' equity:
Common shares, $.50 par value, per share; 96,000 shares authorized; 76,539 and 76,436 shares issued and outstanding before deducting treasury shares and which excludes 9,288 and 9,392 shares subject to redemption as of October 1, 2022 and December 31, 2021	38,398	38,379
Additional paid-in capital	154,111	135,897
Common shares subscribed, unissued	23,954	0
Retained earnings	286,279	239,979
Accumulated other comprehensive loss	(6,839)	(4,173)
Shareholders' equity before treasury stock	495,903	410,082
Less: Cost of common shares held in treasury; 42,082 shares at October 1, 2022 and 41,325 shares at December 31, 2021	338,532	306,242
Common shares subscription receivable	20,634	0
Total common shareholders' equity	136,737	103,840
Total liabilities and shareholders' equity	$ 899,971	$ 772,941
Common stock, par value per share	$ 0.50	$ 0.50
Common stock, shares authorized	96,000,000	96,000,000
Common stock, shares, issued	76,539,000	76,436,000
Common stock, shares, outstanding, before treasury shares	76,539,000	76,436,000
Shares subject to redemption	9,288,000	9,392,000
Treasury stock, shares	42,082,000	41,325,000

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v3.22.2.2

Condensed Consolidated Statements of Operations shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 01, 2022 USD ($) $ / shares shares	Oct. 02, 2021 USD ($) $ / shares shares	Oct. 01, 2022 USD ($) $ / shares shares	Oct. 02, 2021 USD ($) $ / shares shares
Income Statement [Abstract]
Revenues	$ 398,945	$ 370,244	$ 1,143,548	$ 1,024,541
Costs and expenses:
Operating	254,661	232,599	740,422	650,909
Selling	72,364	67,353	201,315	178,876
General and administrative	27,964	20,739	87,014	69,712
Depreciation and amortization	13,780	14,127	41,082	41,287
Gain on sale of assets, net	(2,837)	(1,507)	(5,787)	(4,174)
Total costs and expenses	365,932	333,311	1,064,046	936,610
Income from operations	33,013	36,933	79,502	87,931
Other income (expense):
Interest expense	(2,164)	(1,449)	(5,312)	(4,093)
Interest income	303	39	489	161
Other, net	(3,371)	(2,298)	(8,241)	(5,548)
Income before income taxes	27,781	33,225	66,438	78,451
Income taxes	7,317	8,298	17,407	20,554
Net income	$ 20,464	$ 24,927	$ 49,031	$ 57,897
Net income per share:
Net income per share, basic | $ / shares	$ 0.46	$ 0.56	$ 1.10	$ 1.28
Net income per share, diluted | $ / shares	$ 0.44	$ 0.52	$ 1.05	$ 1.21
Weighted-average shares outstanding:
Weighted-average shares outstanding, basic | shares	44,148	44,885	44,422	45,257
Weighted-average shares outstanding, diluted | shares	46,405	47,951	46,719	47,785
Stock split, conversion ratio			2

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v3.22.2.2

Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 01, 2022	Oct. 02, 2021	Oct. 01, 2022	Oct. 02, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 20,464	$ 24,927	$ 49,031	$ 57,897
Components of other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	1,934	788	2,455	(105)
Unrealized loss on available-for-sale securities	(98)	0	(279)	0
Amortization of defined benefit pension items:
Net actuarial loss	18	27	55	77
Prior service cost	4	11	13	35
Defined benefit pension plan adjustments	22	38	68	112
Other comprehensive income (loss), net of tax	(2,010)	(750)	(2,666)	217
Comprehensive income	$ 18,454	$ 24,177	$ 46,365	$ 58,114

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v3.22.2.2

Condensed Consolidated Statement of Shareholders' Equity Statement $ in Thousands	USD ($) $ / shares	Common stocks USD ($)	Additional paid-in capital USD ($)	Common shares subscribed, unissued USD ($)	Retained earnings USD ($)	Accumulated other comprehensive income (loss), net of tax USD ($)	Common shares held in treasury USD ($)	Common shares subscription receivable USD ($)
Stockholders' equity	$ 79,674	$ 37,801	$ 110,069		$ 206,711	$ (4,547)	$ 270,360
Net income	57,897				57,897
Change in 401KSOP and ESOP related shares	(6,717)	232	6,679		(13,628)
Shares sold to employees	13,743		7,098				6,645
Options exercised	3,213		(636)				3,849
Stock-based compensation	$ 1,968		1,968
Dividends, per share | $ / shares	$ 0.043
Dividends	$ (2,127)				(2,127)
Currency translation adjustments	105					105
Defined benefit pension plans	112					112
Unrealized loss on available-for-sale securities	0
Shares purchased	(36,508)						(36,508)
Stockholders' equity	92,745	38,049	123,822		224,707	(3,580)	(290,253)
Net income	24,927				24,927
Change in 401KSOP and ESOP related shares	(545)	(16)	(529)		0
Shares sold to employees	2,948		1,655				1,293
Options exercised	1,600		(228)				1,828
Stock-based compensation	$ 458		458
Dividends, per share | $ / shares	$ 0.015
Dividends	$ (781)				(781)
Currency translation adjustments						(788)	(788)
Defined benefit pension plans						38	38
Unrealized loss on available-for-sale securities	0
Shares purchased	(9,242)						(9,242)
Stockholders' equity	111,360	38,033	125,178		248,853	(4,330)	296,374
Stockholders' equity	103,840	38,379	135,897	$ 0	239,979	(4,173)	306,242	$ 0
Net income	49,031				49,031
Change in 401KSOP and ESOP related shares	1,810	19	1,840		(49)
Shares sold to employees	21,337		11,714				9,623
Options exercised	1,620		(1,122)				2,742
Subscription shares	6,086		1,554	23,954			1,212	(20,634)
Stock-based compensation	$ 4,228		4,228
Dividends, per share | $ / shares	$ 0.058
Dividends	$ (2,682)				(2,682)
Currency translation adjustments	(2,455)					(2,455)
Defined benefit pension plans	68					68
Unrealized loss on available-for-sale securities	(279)					(279)
Shares purchased	$ (45,867)						(45,867)
Stock split, conversion ratio	2
Stockholders' equity	$ 119,235	38,645	151,752	0	266,745	(4,829)	(333,611)	533
Net income	20,464
Change in 401KSOP and ESOP related shares	(4,461)	(247)	(4,215)		1
Shares sold to employees	5,977		3,354				2,623
Options exercised	172		35				137
Subscription shares	5,553		1,554	23,954			1,212	(21,167)
Stock-based compensation	$ 1,631		1,631
Dividends, per share | $ / shares	$ 0.020
Dividends	$ (931)				(931)
Currency translation adjustments	(1,934)					(1,934)
Defined benefit pension plans	22					22
Unrealized loss on available-for-sale securities	(98)					(98)
Shares purchased	(8,893)						(8,893)
Stockholders' equity	$ 136,737	$ 38,398	$ 154,111	$ 23,954	$ 286,279	$ (6,839)	$ 338,532	$ 20,634

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v3.22.2.2

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Oct. 01, 2022	Oct. 02, 2021
Operating activities
Net income	$ 49,031	$ 57,897
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	41,082	41,287
Other	(683)	(1,242)
Changes in operating assets and liabilities, net of assets acquired:
Accounts receivable	(49,451)	(30,268)
Accounts payable and accrued expenses	12,709	(9,471)
Self-insurance accruals	13,306	13,041
Prepaid expenses	(10,724)	(13,442)
Other, net	7,710	(401)
Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities, Total	13,949	(496)
Net cash provided by operating activities	62,980	57,401
Capital expenditures:
Equipment	(54,829)	(47,907)
Land and buildings	15,916	8,728
Purchases of businesses, net of cash acquired and debt incurred	(4,453)	(10,227)
Proceeds from sales of property and equipment	6,781	7,085
Purchases of marketable securities	(41,305)	0
Proceeds from Sale and Maturity of Marketable Securities	14,114	0
Net cash used in investing activities	(95,608)	(59,777)
Financing activities
Revolving credit facility borrowings	453,885	279,163
Revolving credit facility payments	(402,618)	(245,685)
Purchase of common shares for treasury	(45,867)	(36,508)
Sale of common shares from treasury	29,043	16,956
Dividends paid	(2,682)	(2,127)
Proceeds from notes payable	69,337	217,867
Payments of notes payable	(62,602)	(207,786)
Payments of finance leases	2,313	2,688
Net cash provided by financing activities	36,183	19,192
Effect of exchange rate changes on cash	(171)	40
Increase in cash	3,384	16,856
Cash, beginning of period	19,460	16,201
Cash, end of period	22,844	33,057
Supplemental cash flow information follows:
Interest paid	3,764	4,715
Income taxes paid	$ 9,869	$ 21,204

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-SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8933-108599 + Details Name: us-gaap_NetIncomeLoss Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: duration

X

- Definition Amount of income (expense) included in net income that results in no cash inflow (outflow), classified as other. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585 + Details Name: us-gaap_OtherNoncashIncomeExpense Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: duration

X

- Definition The cash outflow to reacquire common stock during the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3291-108585 + Details Name: us-gaap_PaymentsForRepurchaseOfCommonStock Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: duration

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- Definition Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3291-108585 + Details Name: us-gaap_PaymentsOfDividendsCommonStock Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: duration

X

- Definition The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3213-108585 + Details Name: us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: duration

X

- Definition The cash outflow for acquisition of machinery and equipment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3213-108585 + Details Name: us-gaap_PaymentsToAcquireMachineryAndEquipment Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: duration

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- Definition Amount of cash outflow for purchase of marketable security. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=124260329&loc=d3e26853-111562 + Details Name: us-gaap_PaymentsToAcquireMarketableSecurities Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: duration

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- References No definition available. + Details Name: us-gaap_PaymentsToAcquirePropertyPlantAndEquipmentAbstract Namespace Prefix: us-gaap_ Data Type: xbrli:stringItemType Balance Type: na Period Type: duration

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- Definition The cash outflow from the acquisition of a piece of land, anything permanently fixed to it, including buildings, structures on it and so forth; includes real estate intended to generate income for the owner; excludes real estate acquired for use by the owner. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3213-108585 + Details Name: us-gaap_PaymentsToAcquireRealEstate Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: duration

X

- Definition Amount of cash inflow from issuance of long-term debt classified as other. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3255-108585 + Details Name: us-gaap_ProceedsFromIssuanceOfOtherLongTermDebt Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: debit Period Type: duration

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- Definition The cash inflow from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with maturities due beyond one year or the operating cycle, if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3255-108585 + Details Name: us-gaap_ProceedsFromLongTermLinesOfCredit Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: debit Period Type: duration

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- Definition The cash inflow associated with the aggregate amount received by the entity through sale or maturity of marketable securities (held-to-maturity or available-for-sale) during the period. + References No definition available. + Details Name: us-gaap_ProceedsFromSaleAndMaturityOfMarketableSecurities Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: debit Period Type: duration

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- Definition The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3179-108585 + Details Name: us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: debit Period Type: duration

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- Definition The cash inflow from the issuance of an equity stock that has been previously reacquired by the entity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3255-108585 + Details Name: us-gaap_ProceedsFromSaleOfTreasuryStock Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: debit Period Type: duration

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- Definition The cash outflow for the settlement of obligation drawn from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with maturities due beyond one year or the operating cycle, if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3291-108585 + Details Name: us-gaap_RepaymentsOfLongTermLinesOfCredit Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: duration

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- Definition Amount of cash outflow for the payment of debt classified as other, maturing after one year or the operating cycle, if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3291-108585 + Details Name: us-gaap_RepaymentsOfOtherLongTermDebt Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: duration

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- References No definition available. + Details Name: us-gaap_SupplementalCashFlowInformationAbstract Namespace Prefix: us-gaap_ Data Type: xbrli:stringItemType Balance Type: na Period Type: duration

v3.22.2.2

Basis of Financial Statement Preparation	9 Months Ended
	Oct. 01, 2022
Accounting Policies [Abstract]
Basis of financial statement preparation [Text Block]	Basis of Financial Statement Preparation The consolidated financial statements present the financial position, results of operations and cash flows of The Davey Tree Expert Company and its subsidiaries. When we refer to “we,” “us,” “our,” the "Company," “Davey,” or “Davey Tree”, we mean The Davey Tree Expert Company and its subsidiaries, unless otherwise expressly stated or the context indicates otherwise. We have prepared the accompanying unaudited condensed consolidated financial statements in accordance with accounting principles generally accepted in the United States (“U.S. GAAP”), as codified in the Financial Accounting Standards Board (“FASB”) Accounting Standards Codification ("ASC"), and with the rules and regulations of the Securities and Exchange Commission (“SEC”) for interim financial information. The condensed consolidated financial statements include all adjustments which, in the opinion of management, are necessary for a fair presentation of the results for the interim periods presented. All such adjustments are of a normal, recurring nature. All intercompany accounts and transactions have been eliminated in consolidation. Certain information and disclosures required by U.S. GAAP for complete financial statements have been omitted in accordance with the rules and regulations of the SEC. We suggest that these condensed consolidated financial statements be read in conjunction with the financial statements included in our annual report on Form 10-K for the year ended December 31, 2021 (the “2021 Annual Report”). Use of Estimates in Financial Statement Preparation--The preparation of financial statements in accordance with U.S. GAAP requires the use of estimates and assumptions that affect reported amounts. Our condensed consolidated financial statements include amounts that are based on management’s best estimates and judgments. Estimates are used for, but not limited to, accounts receivable valuation, depreciable lives of fixed assets, long-lived asset valuation, self-insurance accruals, income taxes, stock valuation and revenue recognition. Actual results could differ from those estimates. Our business continues to be impacted by a number of macro-economic factors, including the trailing impact of the COVID-19 pandemic. Global supply chains and product availability remain highly challenged and ongoing global events in Eastern Europe have only exacerbated an already difficult operating environment. These factors, combined with higher fuel costs, rising interest rates and a highly competitive labor market, have created an inflationary environment and cost pressures. The Company’s fiscal quarters each contain thirteen operating weeks, with the exception of the fourth quarter of a 53-week fiscal year, which contains fourteen operating weeks. The Company’s fiscal quarter that ended October 1, 2022 is referred to as the third quarter of 2022, and the fiscal quarter ended October 2, 2021 is referred to as the third quarter of 2021. Recent Accounting Guidance Accounting Standard Not Yet Adopted Accounting Standards Update 2020-04, Reference Rate Reform (Topic 848)--In March 2020, the FASB issued Accounting Standards Update ("ASU") 2020-04, "Reference Rate Reform (Topic 848)—Facilitation of the Effects of Reference Rate Reform on Financial Reporting". The guidance of this ASU is designed to provide relief from the accounting analysis and impacts that may otherwise be required for modifications to agreements (e.g., loans, debt securities, derivatives, borrowings) necessitated by reference rate reform. It also provides optional expedients to enable companies to continue to apply hedge accounting to certain hedging relationships impacted by reference rate reform. Application of the guidance is optional, is only available in certain situations, and is only available for companies to apply until December 31, 2022. In January 2021, the FASB amended ASU 2020-04 by issuing Accounting Standards Update No. 2021-01, Reference Rate Reform Scope ("ASU 2021-01"). ASU 2021-01 clarifies the scope of optional expedients and exceptions to derivatives that are affected by the discounting transition. The Company is currently reviewing its agreements impacted by the reference rate reform and does not expect these ASUs to have a material impact to the Company’s financial statements.

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- References No definition available. + Details Name: us-gaap_AccountingPoliciesAbstract Namespace Prefix: us-gaap_ Data Type: xbrli:stringItemType Balance Type: na Period Type: duration

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- Definition The entire disclosure for the basis of presentation and significant accounting policies concepts. Basis of presentation describes the underlying basis used to prepare the financial statements (for example, US Generally Accepted Accounting Principles, Other Comprehensive Basis of Accounting, IFRS). Accounting policies describe all significant accounting policies of the reporting entity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -URI http://asc.fasb.org/topic&trid=2122369 + Details Name: us-gaap_BasisOfPresentationAndSignificantAccountingPoliciesTextBlock Namespace Prefix: us-gaap_ Data Type: dtr-types:textBlockItemType Balance Type: na Period Type: duration

v3.22.2.2

Seasonality of Business	9 Months Ended
	Oct. 01, 2022
Quarterly Financial Information Disclosure [Abstract]
Seasonality of business	Seasonality of BusinessDue to the seasonality of our business, our operating results for the three and nine months ended October 1, 2022 are not indicative of results that may be expected for any other interim period or for the year ending December 31, 2022. Our business seasonality traditionally results in higher revenues during the second and third quarters as compared with the first and fourth quarters of the year, while the methods of accounting for fixed costs, such as depreciation expense, amortization, rent and interest expense, are not significantly impacted by business seasonality.

X

- References No definition available. + Details Name: us-gaap_QuarterlyFinancialInformationDisclosureAbstract Namespace Prefix: us-gaap_ Data Type: xbrli:stringItemType Balance Type: na Period Type: duration

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- Definition The entire disclosure for quarterly financial data. Includes, but is not limited to, tabular presentation of financial information for fiscal quarters, effect of year-end adjustments, and an explanation of matters or transactions that affect comparability of the information. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -URI http://asc.fasb.org/topic&trid=2126967 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=124502072&loc=SL124452896-108306 + Details Name: us-gaap_QuarterlyFinancialInformationTextBlock Namespace Prefix: us-gaap_ Data Type: dtr-types:textBlockItemType Balance Type: na Period Type: duration

v3.22.2.2

Accounts Receivable, Net and Supplemental Balance-Sheet Information	9 Months Ended
	Oct. 01, 2022
Accounts Receivable, Net and Supplemental Balance-Sheet Information [Abstract] [Abstract]
Accounts receivable net and supplemental balance-sheet information [Text Block]	Accounts Receivable, Net and Supplemental Balance-Sheet Information Accounts receivable, net, consisted of the following: Accounts receivable, net October 1, 2022 December 31, 2021 Accounts receivable $ 236,903  $ 215,336  Unbilled receivables(1) 92,732  65,957    329,635  281,293  Less allowances for credit losses 3,344  3,013  Accounts receivable, net $ 326,291  $ 278,280  (1)    Unbilled receivables consist of work-in-process in accordance with the terms of contracts, primarily with utility services customers. The following items comprised the amounts included in the balance sheets: Other current assets October 1, 2022 December 31, 2021 Refundable income taxes $ 364  $ 1,346  Prepaid expenses 41,619  30,911  Assets invested for self-insurance 4,000  4,250  Other 898  1,346  Total $ 46,881  $ 37,853  Property and equipment, net October 1, 2022 December 31, 2021 Land and land improvements $ 26,075  $ 22,129  Buildings and leasehold improvements 75,097  63,933  Equipment 664,518  646,552    765,690  732,614  Less accumulated depreciation 502,989  504,629  Total $ 262,701  $ 227,985  Other assets, noncurrent October 1, 2022 December 31, 2021 Investment--cost-method affiliate $ 1,258  $ 1,258  Deferred income taxes 5,032  4,937  Cloud computing arrangements 3,353  6,530  Other 4,661  4,539  Total $ 14,304  $ 17,264  Accrued expenses October 1, 2022 December 31, 2021 Employee compensation $ 34,727  $ 37,828  Accrued compensated absences 11,943  11,007  Self-insured medical claims 3,088  2,891  Income tax payable 6,685  145  Customer advances, deposits 6,957  4,009  Taxes, other than income 17,876  13,789  Other 3,771  5,469  Total $ 85,047  $ 75,138  Other current liabilities October 1, 2022 December 31, 2021 Current portion of: Lease liability-operating leases $ 31,726  $ 28,682  Self-insurance accruals 42,774  48,867  Total $ 74,500  $ 77,549  Other noncurrent liabilities October 1, 2022 December 31, 2021 Non-qualified retirement plans $ 9,200  $ 8,713  Other 2,981  2,870  Total $ 12,181  $ 11,583

X

- Definition Accounts Receivable, Net and Supplemental Balance-Sheet and Operating Information [Abstract] + References No definition available. + Details Name: davey_AccountsReceivableNetandSupplementalBalanceSheetInformationAbstractAbstract Namespace Prefix: davey_ Data Type: xbrli:stringItemType Balance Type: na Period Type: duration

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- Definition The entire disclosure for supplemental balance sheet disclosures, including descriptions and amounts for assets, liabilities, and equity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -URI http://asc.fasb.org/topic&trid=2122208 + Details Name: us-gaap_SupplementalBalanceSheetDisclosuresTextBlock Namespace Prefix: us-gaap_ Data Type: dtr-types:textBlockItemType Balance Type: na Period Type: duration

v3.22.2.2

Business Combinations (Notes)	9 Months Ended
	Oct. 01, 2022
Business Combinations [Abstract]
Business Combinations	Business CombinationsOur cash investments in businesses during the first nine months of 2022 were $4,453 and we issued debt, in the form of notes payable to the sellers, of $1,233 which have been included in our Residential and Commercial and Utility segments. In the first nine months of 2022, we also made a payment of $100 for a contingent liability incurred in an acquisition made during the fourth quarter of 2021. Measurement- period adjustments are not complete. The measurement period for purchase price allocations ends as soon as information of the facts and circumstances becomes available, but does not exceed one year from the acquisition date. During the year ended December 31, 2021, our cash investments in businesses was $11,725 and debt issued, in the form of notes payable to the sellers, was $2,961. The following table summarizes the preliminary purchase price allocation of the estimated fair values of the assets acquired and liabilities assumed: Nine Months Ended October 1, 2022 Year Ended December 31, 2021 Detail of acquisitions: Assets acquired:     Cash $ —  $ 292  Receivables —  509  Operating supplies 39  1,044  Prepaid expense —  203  Equipment 1,186  4,049  Deposits and other 265  1,574  Intangible assets 1,350  3,005  Goodwill 3,175  7,723  Liabilities assumed (329) (3,713) Debt issued for purchases of businesses (1,233) (2,961) Cash paid $ 4,453  $ 11,725  The results of operations of acquired businesses have been included in the condensed consolidated statements of operations beginning as of the effective dates of acquisition. The effect of these acquisitions on our consolidated revenues and results of operations for the three and nine months ended October 1, 2022 was not significant. Pro forma net sales and results of operations for the acquisitions, had they occurred at the beginning of the nine months ended October 1, 2022, are not material and, accordingly, are not provided. The acquired intangible assets consist of tradenames, non-competition agreements and customer relationships. The tradenames and customer relationships were assigned an average useful life of seven years and the non-competition agreements were assigned an average useful life of five years. Subsequent to October 1, 2022 and through November 8, 2022, we acquired one business approximating $1,450 with no liabilities assumed and debt issued of $470. The acquired company is in our Residential and Commercial segment and is located in North Carolina. We do not expect the effect of this acquisition on our consolidated revenues and results of operations to be significant.

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- Definition The entire disclosure for a business combination (or series of individually immaterial business combinations) completed during the period, including background, timing, and recognized assets and liabilities. The disclosure may include leverage buyout transactions (as applicable). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -URI http://asc.fasb.org/topic&trid=2303972 + Details Name: us-gaap_BusinessCombinationDisclosureTextBlock Namespace Prefix: us-gaap_ Data Type: dtr-types:textBlockItemType Balance Type: na Period Type: duration

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v3.22.2.2

Identified Intangible Assets and Goodwill, Net	9 Months Ended
	Oct. 01, 2022
Goodwill and Intangible Assets Disclosure [Abstract]
Identified intangible assets and goodwill, net [Text Block]	Identified Intangible Assets and Goodwill, Net The carrying amounts of the identified intangible assets and goodwill acquired in connection with our acquisitions were as follows:   October 1, 2022 December 31, 2021 Carrying Amount Accumulated Amortization Carrying Amount Accumulated Amortization Amortized intangible assets:         Customer lists/relationships $ 33,498  $ 26,222  $ 32,294  $ 24,090  Employment-related 10,451  8,754  9,946  8,301  Tradenames 8,641  6,977  8,426  6,642  Amortized intangible assets 52,590  $ 41,953  50,666  $ 39,033  Less accumulated amortization 41,953    39,033    Identified intangible assets, net $ 10,637    $ 11,633    Goodwill $ 58,999    $ 55,980    The changes in the carrying amounts of goodwill, by segment, for the nine months ended October 1, 2022 and the year ended December 31, 2021 were as follows: Balance at January 1, 2022 Acquisitions Translation and Other Adjustments Balance at October 1, 2022 Utility $ 4,911  $ 30  $ —  $ 4,941  Residential and Commercial 51,069  3,145  (156) 54,058  Total $ 55,980  $ 3,175  $ (156) $ 58,999  Balance at January 1, 2021 Acquisitions Translation and Other Adjustments Balance at December 31, 2021 Utility $ 4,911  $ —  $ —  $ 4,911  Residential and Commercial 43,345  7,723  1  51,069  Total $ 48,256  $ 7,723  $ 1  $ 55,980  Estimated future aggregate amortization expense of intangible assets--The estimated future aggregate amortization expense of intangible assets, as of October 1, 2022, was as follows:   Estimated Future Amortization Expense Remaining three months of 2022 $ 820  2023 3,073  2024 2,752  2025 1,970  2026 1,132  2027 648  Thereafter 242  $ 10,637

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- References No definition available. + Details Name: us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract Namespace Prefix: us-gaap_ Data Type: xbrli:stringItemType Balance Type: na Period Type: duration

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- Definition The entire disclosure for goodwill and intangible assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -URI http://asc.fasb.org/topic&trid=2144416 + Details Name: us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock Namespace Prefix: us-gaap_ Data Type: dtr-types:textBlockItemType Balance Type: na Period Type: duration

v3.22.2.2

Long-Term Debt and Commitments Related to Letters of Credit	9 Months Ended
	Oct. 01, 2022
Debt Disclosure [Abstract]
Long-term debt and commitments related to letters of credit [Text Block]	Short and Long-Term Debt and Commitments Related to Letters of Credit We have short-term lines of credit with several banks totaling $11,091. At October 1, 2022, we had $8,971 available under the lines of credit and $2,120 committed through issued letters of credit. Borrowings outstanding generally bear interest at the banks' prime rate or LIBOR plus a margin adjustment of .75% to 1.50%. Our long-term debt consisted of the following: October 1, 2022 December 31, 2021 Revolving credit facility:     Swing-line borrowings $ 23,099  $ 16,832  LIBOR borrowings 75,000  30,000    98,099  46,832  Senior unsecured notes: 3.99% Senior unsecured notes 50,000  50,000  4.00% Senior unsecured notes 25,000  25,000  75,000  75,000  Term loans 33,128  25,182    206,227  147,014  Less debt issuance costs 558  674  Less current portion 31,090  22,809    $ 174,579  $ 123,531  Revolving Credit Facility--In August 2021, the Company amended and restated its revolving credit facility with its existing bank group. The amended and restated credit agreement, which expires in August 2026, permits borrowings, as defined, of up to $325,000, including a letter of credit sublimit of $150,000 and a swing-line commitment of $30,000. Under certain circumstances, the amount available under the revolving credit facility may be increased to $425,000. The revolving credit facility contains certain affirmative and negative covenants customary for this type of facility and includes financial covenant ratios with respect to a maximum leverage ratio (not to exceed 3.00 to 1.00 with exceptions in case of material acquisitions) and a minimum interest coverage ratio (not less than 3.00 to 1.00), in each case subject to certain further restrictions as described in the credit agreement. As of October 1, 2022, we had unused commitments under the facility approximating $224,201, with $100,799 committed, consisting of borrowings of $98,099 and issued letters of credit of $2,700. Borrowings outstanding bear interest, at Davey Tree’s option, of either (a) the base rate or (b) LIBOR plus a margin adjustment ranging from .875% to 1.50%--with the margin adjustments based on the Company's leverage ratio at the time of borrowing. The base rate is the greater of (i) the agent bank’s prime rate, (ii) LIBOR plus 1.50%, or (iii) the federal funds rate plus .50%. A commitment fee ranging from .10% to .225% is also required based on the average daily unborrowed commitment. 3.99% Senior Unsecured Notes--On September 21, 2018, we issued 3.99% Senior Notes, Series A (the "3.99% Senior Notes"), in the aggregate principal amount of $50,000. The 3.99% Senior Notes are due September 21, 2028. The 3.99% Senior Notes were issued pursuant to a Note Purchase and Private Shelf Agreement (the “Note Purchase and Shelf Agreement”) between the Company, PGIM, Inc. and the purchasers of the 3.99% Senior Notes, which was amended in September 2021. Among other things, the amendment increased the total facility limit to $150,000 and extended the issuance period for subsequent series of promissory notes to be issued and sold pursuant to the Note Purchase and Shelf Agreement to September 2024. The amendment also amended certain provisions and covenants to generally conform them to the corresponding provisions and covenants in the amended and restated revolving credit agreement. In addition, the amendment and restatement of the revolving credit agreement in August 2021 provided that the Company is permitted to incur indebtedness arising under the Note Purchase and Shelf Agreement in an aggregate principal amount not to exceed $150,000. As the Company has previously issued notes in an aggregate amount of $75,000 under the Note Purchase and Shelf Agreement, it now has capacity to issue subsequent series of promissory notes pursuant to the Note Purchase and Shelf Agreement (the "Shelf Notes") in an aggregate amount of up to $75,000. The 3.99% Senior Notes are equal in right of payment with our revolving credit facility and all other senior unsecured obligations of the Company. Interest is payable semiannually and five equal, annual principal payments commence on September 21, 2024 (the sixth anniversary of issuance). The Note Purchase and Shelf Agreement contains customary events of default and covenants related to limitations on indebtedness and transactions with affiliates and the maintenance of certain financial ratios. The Company may prepay at any time all, or from time to time any part of, the outstanding principal amount of the 3.99% Senior Notes, subject to the payment of a make-whole amount. 4.00% Senior Unsecured Notes--On February 5, 2019, we issued 4.00% Senior Notes, Series B (the "4.00% Senior Notes") pursuant to the Note Purchase and Shelf Agreement in the aggregate principal amount of $25,000. The 4.00% Senior Notes are due September 21, 2028. The 4.00% Senior Notes are equal in right of payment with our revolving credit facility and all other senior unsecured obligations of the Company. Interest is payable semiannually and five equal, annual principal payments commence on September 21, 2024. The net proceeds of all senior notes were used to pay down borrowings under our revolving credit facility. Term loans--Periodically, the Company will enter into term loans for the procurement of insurance or to finance acquisitions. Aggregate Maturities of Long-Term Debt--Aggregate maturities of long-term debt based on the principal amounts outstanding at October 1, 2022 were as follows: 2022--$9,885; 2023--$21,635; 2024--$16,196; 2025--$15,411; 2026--$113,100; 2027--$15,000; and thereafter $15,000. Accounts Receivable Securitization Facility--In June 2022, the Company amended its Accounts Receivable Securitization Facility (the "AR Securitization program") to extend the scheduled termination date for an additional one-year period, to June 29, 2023. In addition to extending the termination date for another year, the amendment replaced the London Interbank Offered Rate (LIBOR) interest rate provisions with customary provisions based on the secured overnight financing rate ("SOFR"). The AR Securitization program has a limit of $100,000, of which $89,689 and $83,355 was issued for LCs as of October 1, 2022 and December 31, 2021, respectively. Under the AR Securitization program, Davey Tree transfers by selling or contributing current and future trade receivables to a wholly-owned, bankruptcy-remote financing subsidiary which pledges a perfected first priority security interest in the trade receivables--equal to the issued LCs as of October 1, 2022--to the bank in exchange for the bank issuing LCs. Fees payable to the bank include: (a) an LC issuance fee, payable on each settlement date, in the amount of .90% per annum on the aggregate amount of all LCs outstanding plus outstanding reimbursement obligations (e.g., arising from drawn LCs), if any, and (b) an unused LC fee, payable monthly, equal to (i) .35% per annum for each day on which the sum of the total LCs outstanding plus any outstanding reimbursement obligations is greater than or equal to 50% of the facility limit and (ii) .45% per annum for each day on which the sum of the total LCs outstanding plus any outstanding reimbursement obligations is less than 50% of the facility limit. If an LC is drawn and the bank is not immediately reimbursed in full for the drawn amount, any outstanding reimbursement obligation will accrue interest at a per annum rate equal to the term SOFR, plus 0.10% or, in certain circumstances, a base rate equal to the greatest of (i) the bank’s prime rate, (ii) the federal funds rate plus .50% and (iii) 1.00% above the Daily one month SOFR plus 0.10% and, following any default, 2.00% plus the greater of (a) the term SOFR plus 0.10% and (b) a base rate equal to the greatest of (i), (ii) and (iii) above. The agreements underlying the AR Securitization program contain various customary representations and warranties, covenants, and default provisions which provide for the termination and acceleration of the commitments under the AR Securitization program in circumstances including, but not limited to, failure to make payments when due, breach of a representation, warranty or covenant, certain insolvency events or failure to maintain the security interest in the trade receivables, and defaults under other material indebtedness. Total Commitments Related to Issued Letters of Credit--As of October 1, 2022, total commitments related to issued LCs were $94,509, of which $2,700 were issued under the revolving credit facility, $89,689 were issued under the AR Securitization program, and $2,120 were issued under short-term lines of credit. As of December 31, 2021, total commitments related to issued LCs were $88,362, of which $2,877 were issued under the revolving credit facility, $83,355 were issued under the AR Securitization program, and $2,130 were issued under short-term lines of credit. As of October 1, 2022, we were in compliance with all debt covenants.

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- Definition The entire disclosure for long-term debt. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -URI http://asc.fasb.org/topic&trid=2208564 + Details Name: us-gaap_LongTermDebtTextBlock Namespace Prefix: us-gaap_ Data Type: dtr-types:textBlockItemType Balance Type: na Period Type: duration

v3.22.2.2

Leases (Notes)	9 Months Ended
	Oct. 01, 2022
Leases [Abstract]
Leases	Leases We lease certain office and parking facilities, warehouse space, equipment, vehicles and information technology equipment under operating and finance leases. Lease expense for these leases is recognized within the Condensed Consolidated Statements of Operations on a straight-line basis over the lease term, with variable lease payments recognized in the period those payments are incurred. The following table summarizes the amounts recognized in our Condensed Consolidated Balance Sheet related to leases: Condensed Consolidated Balance Sheet Classification October 1, 2022 December 31, 2021 Assets   Operating lease assets Right-of-use assets - operating leases $ 95,350  $ 86,423  Finance lease assets Property and equipment, net 13,268  11,592  Total lease assets   $ 108,618  $ 98,015  Liabilities   Current operating lease liabilities Other current liabilities $ 31,726  $ 28,682  Non-current operating lease liabilities Lease liabilities - operating leases 62,586  57,335  Total operating lease liabilities   94,312  86,017  Current portion of finance lease liabilities Current portion of long-term debt and finance lease liabilities 2,998  2,459  Non-current finance lease liabilities Lease liabilities - finance leases 9,704  8,646  Total finance lease liabilities   12,702  11,105  Total lease liabilities   $ 107,014  $ 97,122  The components of lease cost recognized within our Condensed Consolidated Statements of Operations were as follows: Three Months Ended Nine Months Ended Condensed Consolidated Statements of Operations Classification October 1, 2022 October 2, 2021 October 1, 2022 October 2, 2021 Operating lease cost Operating expense $ 6,649  $ 4,965  $ 19,095  $ 13,065  Operating lease cost Selling expense 2,926  2,631  8,492  7,718  Operating lease cost General and administrative expense 304  290  883  867  Finance lease cost: Amortization of right-of-use assets Depreciation and amortization 889  752  2,334  1,985  Interest expense on lease liabilities Interest expense 74  52  196  134  Other lease cost (1) Operating expense 1,271  999  3,613  2,839  Other lease cost (1) Selling expense 235  360  1,059  1,013  Other lease cost (1) General and administrative expense 27  8  59  28  Total lease cost $ 12,375  $ 10,057  $ 35,731  $ 27,649  (1) Other lease cost includes short-term lease costs and variable lease costs. We often have options to renew lease terms for buildings and other assets. The exercise of lease renewal options is generally at our sole discretion. In addition, certain lease agreements may be terminated prior to their original expiration date at our discretion. We evaluate each renewal and termination option at the lease commencement date to determine if we are reasonably certain to exercise the option on the basis of economic factors. The weighted average remaining lease terms as of October 1, 2022 was 3.7 years for operating leases and 4.7 years for finance leases. The discount rate implicit within our leases is generally not determinable and therefore the Company determines the discount rate based on its incremental borrowing rate. The incremental borrowing rate for each lease is determined based on its term and the currency in which lease payments are made, adjusted for the impacts of collateral. The weighted average discount rates used to measure our lease liabilities as of October 1, 2022 was 2.90% for operating leases and 2.72% for finance leases. Supplemental Cash Flow Information Related to Leases Nine Months Ended October 1, 2022 October 2, 2021 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ (29,194) $ (21,822) Operating cash flows from finance leases (196) (134) Financing cash flows from finance leases (2,313) (2,688) Right-of-use assets obtained in exchange for lease obligations: Operating leases 38,403  47,069  Finance leases 3,910  4,174  Maturity Analysis of Lease Liabilities As of October 1, 2022 Operating Leases Finance Leases Remaining three months of 2022 $ 9,301  $ 747  2023 31,878  3,237  2024 24,610  3,106  2025 16,964  2,472  2026 9,277  2,101  2027 3,343  1,123  Thereafter 4,061  732  Total lease payments 99,434  13,518  Less interest 5,122  816  Total $ 94,312  $ 12,702
Leases	Leases We lease certain office and parking facilities, warehouse space, equipment, vehicles and information technology equipment under operating and finance leases. Lease expense for these leases is recognized within the Condensed Consolidated Statements of Operations on a straight-line basis over the lease term, with variable lease payments recognized in the period those payments are incurred. The following table summarizes the amounts recognized in our Condensed Consolidated Balance Sheet related to leases: Condensed Consolidated Balance Sheet Classification October 1, 2022 December 31, 2021 Assets   Operating lease assets Right-of-use assets - operating leases $ 95,350  $ 86,423  Finance lease assets Property and equipment, net 13,268  11,592  Total lease assets   $ 108,618  $ 98,015  Liabilities   Current operating lease liabilities Other current liabilities $ 31,726  $ 28,682  Non-current operating lease liabilities Lease liabilities - operating leases 62,586  57,335  Total operating lease liabilities   94,312  86,017  Current portion of finance lease liabilities Current portion of long-term debt and finance lease liabilities 2,998  2,459  Non-current finance lease liabilities Lease liabilities - finance leases 9,704  8,646  Total finance lease liabilities   12,702  11,105  Total lease liabilities   $ 107,014  $ 97,122  The components of lease cost recognized within our Condensed Consolidated Statements of Operations were as follows: Three Months Ended Nine Months Ended Condensed Consolidated Statements of Operations Classification October 1, 2022 October 2, 2021 October 1, 2022 October 2, 2021 Operating lease cost Operating expense $ 6,649  $ 4,965  $ 19,095  $ 13,065  Operating lease cost Selling expense 2,926  2,631  8,492  7,718  Operating lease cost General and administrative expense 304  290  883  867  Finance lease cost: Amortization of right-of-use assets Depreciation and amortization 889  752  2,334  1,985  Interest expense on lease liabilities Interest expense 74  52  196  134  Other lease cost (1) Operating expense 1,271  999  3,613  2,839  Other lease cost (1) Selling expense 235  360  1,059  1,013  Other lease cost (1) General and administrative expense 27  8  59  28  Total lease cost $ 12,375  $ 10,057  $ 35,731  $ 27,649  (1) Other lease cost includes short-term lease costs and variable lease costs. We often have options to renew lease terms for buildings and other assets. The exercise of lease renewal options is generally at our sole discretion. In addition, certain lease agreements may be terminated prior to their original expiration date at our discretion. We evaluate each renewal and termination option at the lease commencement date to determine if we are reasonably certain to exercise the option on the basis of economic factors. The weighted average remaining lease terms as of October 1, 2022 was 3.7 years for operating leases and 4.7 years for finance leases. The discount rate implicit within our leases is generally not determinable and therefore the Company determines the discount rate based on its incremental borrowing rate. The incremental borrowing rate for each lease is determined based on its term and the currency in which lease payments are made, adjusted for the impacts of collateral. The weighted average discount rates used to measure our lease liabilities as of October 1, 2022 was 2.90% for operating leases and 2.72% for finance leases. Supplemental Cash Flow Information Related to Leases Nine Months Ended October 1, 2022 October 2, 2021 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ (29,194) $ (21,822) Operating cash flows from finance leases (196) (134) Financing cash flows from finance leases (2,313) (2,688) Right-of-use assets obtained in exchange for lease obligations: Operating leases 38,403  47,069  Finance leases 3,910  4,174  Maturity Analysis of Lease Liabilities As of October 1, 2022 Operating Leases Finance Leases Remaining three months of 2022 $ 9,301  $ 747  2023 31,878  3,237  2024 24,610  3,106  2025 16,964  2,472  2026 9,277  2,101  2027 3,343  1,123  Thereafter 4,061  732  Total lease payments 99,434  13,518  Less interest 5,122  816  Total $ 94,312  $ 12,702

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- Definition The entire disclosure for finance leases of lessee. Includes, but is not limited to, description of lessee's finance lease and maturity analysis of finance lease liability. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -URI http://asc.fasb.org/subtopic&trid=77888251 + Details Name: us-gaap_LesseeFinanceLeasesTextBlock Namespace Prefix: us-gaap_ Data Type: dtr-types:textBlockItemType Balance Type: na Period Type: duration

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- Definition The entire disclosure for operating leases of lessee. Includes, but is not limited to, description of operating lease and maturity analysis of operating lease liability. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -URI http://asc.fasb.org/subtopic&trid=77888251 + Details Name: us-gaap_LesseeOperatingLeasesTextBlock Namespace Prefix: us-gaap_ Data Type: dtr-types:textBlockItemType Balance Type: na Period Type: duration

v3.22.2.2

Stock-Based Compensation	9 Months Ended
	Oct. 01, 2022
Share-based Payment Arrangement [Abstract]
Stock-based compensation[Text Block]	Stock-Based CompensationOur shareholders approved the 2014 Omnibus Stock Plan (the “2014 Stock Plan”) at our annual meeting of shareholders on May 20, 2014. The 2014 Stock Plan replaced the expired 2004 Omnibus Stock Plan (the “2004 plan”) previously approved by the shareholders in 2004. The 2014 Stock Plan is administered by the Compensation Committee of the Board of Directors and has a term of ten years. All directors of the Company and employees of the Company and its subsidiaries are eligible to participate in the 2014 Stock Plan. The 2014 Stock Plan (similar to the 2004 plan) continues the maintenance of the Employee Stock Purchase Plan, as well as provisions for the grant of stock options and other stock-based incentives. The 2014 Stock Plan provides for the grant of five percent of the number of the Company’s common shares outstanding as of the first day of each fiscal year plus the number of common shares that were available for grant of awards, but not granted, in prior years. In no event, however, may the number of common shares available for the grant of awards in any fiscal year exceed ten percent of the common shares outstanding as of the first day of that fiscal year. Common shares subject to an award that is forfeited, terminated, or canceled without having been exercised are generally added back to the number of shares available for grant under the 2014 Stock Plan. Stock-based compensation expense under all share-based payment plans -- our Employee Stock Purchase Plan, stock option plans, stock-settled stock appreciation rights ("SSARs") and restricted stock units ("RSUs") -- was included in the results of operations as follows:   Three Months Ended Nine Months Ended October 1, 2022 October 2, 2021 October 1, 2022 October 2, 2021 Compensation expense, all share-based payment plans $ 1,658  $ 1,167  $ 5,244  $ 3,432  Stock-based compensation consisted of the following: Employee Stock Purchase Plan--Under the Employee Stock Purchase Plan, all full-time employees with one year of service are eligible to purchase, through payroll deduction, common shares. Employee purchases under the Employee Stock Purchase Plan are at 85% of the fair market value of the common shares--a 15% discount. We recognize compensation costs as payroll deductions are made. The 15% discount of total shares purchased under the plan resulted in compensation cost of $1,380 being recognized for the nine months ended October 1, 2022 and $1,187 for the nine months ended October 2, 2021. Stock Option Plans--The stock options outstanding were awarded under a graded vesting schedule, measured at fair value, and have a term of ten years. Compensation costs for stock options are recognized over the requisite service period on the straight-line recognition method. Compensation cost recognized for stock options was $289 for the nine months ended October 1, 2022 and $343 for the nine months ended October 2, 2021. Beginning in 2021, management and the Compensation Committee replaced the issuance of stock options with performance-based restricted stock units ("PRSUs") for certain employees. Stock-Settled Stock Appreciation Rights--A SSAR is an award that allows the recipient to receive common shares equal to the appreciation in the fair market value of our common shares between the date the award was granted and the conversion date of the shares vested. Effective January 1, 2019, management and the Compensation Committee replaced the issuance of future SSARs with PRSUs for certain management employees. The following table summarizes our SSARs as of October 1, 2022. Stock-Settled Stock Appreciation Rights Number of Rights Weighted- Average Award Date Value Weighted- Average Remaining Contractual Life Unrecognized Compensation Cost Aggregate Intrinsic Value Unvested, January 1, 2022 87,534  $ 1.92        Granted —  —        Forfeited —  —        Vested (43,752) 1.92        Unvested, October 1, 2022 43,782  $ 1.92  0.3 years $ 19  $ 792  Compensation costs for SSARs are determined using a fair-value method and amortized over the requisite service period. “Intrinsic value” is defined as the amount by which the fair market value of a common share exceeds the grant date price of a SSAR. Compensation expense for SSARs was $65 for the nine months ended October 1, 2022 and $120 for the nine months ended October 2, 2021. Restricted Stock Units--During the nine months ended October 1, 2022, the Compensation Committee awarded 336,664 PRSUs to certain management employees and 14,693 RSUs to nonemployee directors. The Compensation Committee made similar awards in prior periods. The awards vest over specified periods. The following table summarizes PRSUs and RSUs as of October 1, 2022. Restricted Stock Units Number of Stock Units Weighted- Average Grant Date Value Weighted- Average Remaining Contractual Life Unrecognized Compensation Cost Aggregate Intrinsic Value Unvested, January 1, 2022 740,160  $ 12.49        Granted 351,357  17.89        Forfeited (1,000) 17.89        Vested (181,176) 11.04        Unvested, October 1, 2022 909,341  $ 14.86  2.0 years $ 8,315  $ 13,517  Employee PRSUs 851,640  $ 14.89  2.0 years $ 7,863  $ 12,685  Nonemployee Director RSUs 57,701  $ 14.42  2.2 years $ 452  $ 832  Compensation cost for PRSUs and RSUs is determined using a fair-value method and amortized on the straight-line recognition method over the requisite service period. “Intrinsic value” is defined as the amount by which the fair market value of a common share exceeds the grant date price of a PRSU or an RSU. Compensation expense on PRSUs and RSUs totaled $3,510 for the nine months ended October 1, 2022 and $1,782 for the nine months ended October 2, 2021. We estimated the fair value of each stock-based award on the date of grant using a binomial option-pricing model. The binomial model considers a range of assumptions related to volatility, risk-free interest rate and employee exercise behavior. Expected volatilities utilized in the binomial model are based on historical volatility of our stock prices and other factors. Similarly, the dividend yield is based on historical experience and expected future changes. The binomial model also incorporates exercise and forfeiture assumptions based on an analysis of historical data. The expected life of the stock-based awards is derived from the output of the binomial model and represents the period of time that awards granted are expected to be outstanding. The fair values of stock-based awards granted were estimated at the dates of grant with the following weighted-average assumptions.   Nine Months Ended October 1, 2022 October 2, 2021 Volatility rate 9.7  % 9.9  % Risk-free interest rate 1.7  % .3  % Expected dividend yield .4  % .4  % Expected life of awards (years) 3.0 3.0 General Stock Option Information--The following table summarizes activity under the stock option plans for the nine months ended October 1, 2022. Stock Options Number of Options Outstanding Weighted- Average Exercise Price Weighted- Average Remaining Contractual Life Aggregate Intrinsic Value Outstanding, January 1, 2022 2,350,934  $ 8.56      Granted —  —      Exercised (219,143) 8.29      Forfeited (17,820) 8.01      Outstanding, October 1, 2022 2,113,971  $ 8.59  4.2 years $ 20,104  Exercisable, October 1, 2022 1,725,879  $ 7.99  3.5 years $ 17,449  As of October 1, 2022, there was approximately $489 of unrecognized compensation cost related to stock options outstanding. The cost is expected to be recognized over a weighted-average period of 0.8 years. “Intrinsic value” is defined as the amount by which the market price of a common share exceeds the exercise price of an option.  Common shares are issued from treasury upon the exercise of stock options and SSARs, the vesting of RSUs and PRSUs or purchases under the Employee Stock Purchase Plan.

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- Definition The entire disclosure for share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -URI http://asc.fasb.org/topic&trid=2228938 + Details Name: us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock Namespace Prefix: us-gaap_ Data Type: dtr-types:textBlockItemType Balance Type: na Period Type: duration

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v3.22.2.2

Income Taxes	9 Months Ended
	Oct. 01, 2022
Income Tax Disclosure [Abstract]
Income taxes [Text Block]	Income TaxesOur income tax provision for interim periods is determined using an estimate of our annual effective tax rate adjusted for discrete items, if any, that are taken into account in the relevant period. Each quarter we update our estimate of the annual effective tax rate and, if our estimated annual tax rate changes, we make a cumulative adjustment. The estimated annual effective tax rate for the nine months ended October 1, 2022 was 26.6%. Our actual effective tax rate was 26.3% and 25.0% for the three months ended October 1, 2022 and October 2, 2021, respectively. Our actual effective tax rate was 26.2% and 26.2% for the nine months ended October 1, 2022 and October 2, 2021, respectively. The change in the effective tax rate from statutory tax rates was primarily due to the impact of favorable discrete items which are a set amount and therefore have a larger impact on the rate based on our net income before tax in the first nine months compared to the impact it will have on the rate for the full year. As of October 1, 2022, we had unrecognized tax benefits of $666, of which $293 would affect our effective rate if recognized, and accrued interest expense related to unrecognized benefits of $45. At December 31, 2021, we had unrecognized tax benefits of $700, of which $327 would affect our effective rate if recognized, and accrued interest expense related to unrecognized benefits of $56. Unrecognized tax benefits are the differences between a tax position taken, or expected to be taken, in a tax return, and the benefit recognized for financial reporting purposes. We recognize interest accrued related to unrecognized tax benefits in income tax expense. Penalties, if incurred, would be recognized as a component of income tax expense. The Company is routinely under audit by U.S. federal, state and local authorities and Canadian authorities in the area of income tax. These audits include questioning the timing and the amount of income and deductions and the allocation of income and deductions among various tax jurisdictions. With the exception of U.S. state jurisdictions and Canada, the Company is no longer subject to examination by tax authorities for the years through 2018. As of October 1, 2022, we believe it is reasonably possible that the total amount of unrecognized tax benefits will not significantly increase or decrease.

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- Definition The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 21 -URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32857-109319 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 11.C) -URI http://asc.fasb.org/extlink&oid=122134291&loc=d3e330215-122817 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 17 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32809-109319 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 6.I.5.Q1) -URI http://asc.fasb.org/extlink&oid=122134291&loc=d3e330036-122817 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32705-109319 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 270 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6424409&loc=d3e44925-109338 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -URI http://asc.fasb.org/topic&trid=2144680 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6424122&loc=d3e41874-109331 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(h)(2)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 + Details Name: us-gaap_IncomeTaxDisclosureTextBlock Namespace Prefix: us-gaap_ Data Type: dtr-types:textBlockItemType Balance Type: na Period Type: duration

v3.22.2.2

Accumulated Other Comprehensive Income (Loss)	9 Months Ended
	Oct. 01, 2022
Equity [Abstract]
Accumulated other comprehensive income (loss) [Text Block]	Accumulated Other Comprehensive Income (Loss) Comprehensive income (or loss) is comprised of net income (or net loss) and other components, including foreign currency translation adjustments and defined benefit pension plan adjustments. The following summarizes the components of other comprehensive income (loss) accumulated in shareholders’ equity for the three and nine months ended October 1, 2022 and October 2, 2021: Three Months Ended October 1, 2022 Foreign Currency Available for Sale Securities Defined Benefit Pension Plans Accumulated Other Comprehensive Income (Loss) Balance at July 2, 2022 $ (4,175) $ (181) $ (473) $ (4,829) Other comprehensive income (loss) before reclassifications Translation adjustment $ (1,934) $ —  $ —  $ (1,934) Unrealized losses —  (113) —  (113) Amounts reclassified from accumulated other comprehensive income (loss) —  (11) 30  19  Tax effect —  26  (8) 18  Net of tax amount (1,934) (98) 22  (2,010) Balance at October 1, 2022 $ (6,109) $ (279) $ (451) $ (6,839) Three Months Ended October 2, 2021 Foreign Currency Available-for-Sale Securities Defined Benefit Pension Plans Accumulated Other Comprehensive Income (Loss) Balance at July 3, 2021 $ (2,845) $ —  $ (735) $ (3,580) Other comprehensive income (loss) before reclassifications Translation adjustment $ (788) $ —  $ —  $ (788) Amounts reclassified from accumulated other comprehensive income (loss) —  —  51  51  Tax effect —  —  (13) (13) Net of tax amount (788) —  38  (750) Balance at October 2, 2021 $ (3,633) $ —  $ (697) $ (4,330) Nine Months Ended October 1, 2022 Foreign Currency Available-for-Sale Securities Defined Benefit Pension Plans Accumulated Other Comprehensive Income (Loss) Balance at January 1, 2022 $ (3,654) $ —  $ (519) $ (4,173) Other comprehensive income (loss) before reclassifications Translation adjustment $ (2,455) $ —  $ —  $ (2,455) Unrealized losses —  (350) —  (350) Amounts reclassified from accumulated other comprehensive income (loss) —  (3) 92  89  Tax effect —  74  (24) 50  Net of tax amount (2,455) (279) 68  (2,666) Balance at October 1, 2022 $ (6,109) $ (279) $ (451) $ (6,839) Nine Months Ended October 2, 2021 Foreign Currency Available-for-Sale Securities Defined Benefit Pension Plans Accumulated Other Comprehensive Income (Loss) Balance at January 1, 2021 $ (3,738) $ —  $ (809) $ (4,547) Other comprehensive income (loss) before reclassifications Translation adjustment $ 105  $ —  $ —  $ 105  Amounts reclassified from accumulated other comprehensive income (loss) —  —  151  151  Tax effect —  —  (39) (39) Net of tax amount 105  —  112  217  Balance at October 2, 2021 $ (3,633) $ —  $ (697) $ (4,330) The change in defined benefit pension plans of $30 and $92 for the three and nine months ended October 1, 2022, respectively, and $51 and $151 for the three and nine months ended October 2, 2021, respectively, was included in net periodic pension expense classified in the condensed consolidated statement of operations as general and administrative expense or other income (expense).

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- Definition The entire disclosure for comprehensive income, which includes, but is not limited to, 1) the amount of income tax expense or benefit allocated to each component of other comprehensive income, including reclassification adjustments, 2) the reclassification adjustments for each classification of other comprehensive income and 3) the ending accumulated balances for each component of comprehensive income. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -URI http://asc.fasb.org/topic&trid=2134417 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(21)) -URI http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(23)) -URI http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(19)) -URI http://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263 + Details Name: us-gaap_ComprehensiveIncomeNoteTextBlock Namespace Prefix: us-gaap_ Data Type: dtr-types:textBlockItemType Balance Type: na Period Type: duration

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- References No definition available. + Details Name: us-gaap_EquityAbstract Namespace Prefix: us-gaap_ Data Type: xbrli:stringItemType Balance Type: na Period Type: duration

v3.22.2.2

Per Share Amounts and Common Shares Outstanding	9 Months Ended
	Oct. 01, 2022
Equity [Abstract]
Per share amounts and common and redeemable shares outstanding [Text Block]	Per Share Amounts and Common and Redeemable Shares Outstanding We calculate our basic earnings per share by dividing net income or net loss by the weighted average number of common shares outstanding during the period. Diluted earnings per share are calculated in a similar manner, but include the effect of dilutive securities. To the extent these securities are antidilutive, they are excluded from the calculation of earnings per share. The per share amounts were computed as follows: Three Months Ended Nine Months Ended October 1, 2022 October 2, 2021 October 1, 2022 October 2, 2021 Income available to common shareholders: Net income $ 20,464  $ 24,927  $ 49,031  $ 57,897  Weighted-average shares (in thousands): Basic: Outstanding 43,920  44,885  44,194  45,257  Partially-paid share subscriptions 228  —  228  —  Basic weighted-average shares 44,148  44,885  44,422  45,257  Diluted: Basic from above 44,148  44,885  44,422  45,257  Incremental shares from assumed: Exercise of stock options and awards 2,257  3,066  2,297  2,528  Diluted weighted-average shares 46,405  47,951  46,719  47,785  Net income per share: Basic $ .46  $ .56  $ 1.10  $ 1.28  Diluted $ .44  $ .52  $ 1.05  $ 1.21  Common and Redeemable Shares Outstanding--A summary of the activity of the common and redeemable shares outstanding for the nine months ended October 1, 2022 was as follows: Common Shares Net of Treasury Shares Redeemable Shares Total Shares outstanding at January 1, 2022 35,110,432  9,391,790  44,502,222  Shares purchased (1,646,735) (881,136) (2,527,871) Shares sold 472,110  777,725  1,249,835  Stock subscription offering -- cash purchases 152,800  —  152,800  Options and awards exercised 368,402  —  368,402  Shares outstanding at October 1, 2022 34,457,009  9,288,379  43,745,388  On October 1, 2022, we had 43,745,388 common and redeemable shares outstanding, employee options exercisable to purchase 1,725,879 common shares, partially-paid subscriptions for 1,318,450 common shares and purchase rights outstanding for 487,488 common shares. Common Stock Split--On September 17, 2021, our board of directors approved and declared a two-for-one stock split in the form of a stock dividend, pursuant to which each of our shareholders of record at the close of business on October 1, 2021 received one additional common share for each then-held common share, which was paid on October 15, 2021. On September 20, 2021, in connection with the stock split, the Company filed a Certificate of Amendment to its 2017 Amended Articles of Incorporation with the Secretary of State of the State of Ohio, which became effective upon filing and (1) proportionately increased the authorized number of common shares from 48,000,000 to 96,000,000 and (2) proportionately decreased the par value of our common shares from $1.00 per share to $.50 per share. 2022 Subscription Offering Beginning April 2022, the Company offered to eligible employees and nonemployee directors the right to subscribe to a maximum of 2,666,667 common shares of the Company (including shares that may be issued upon the exercise of stock rights) at $18.10 per share in accordance with the provisions of The Davey Tree Expert Company 2014 Omnibus Stock Plan and the rules of the Compensation Committee of the Company’s Board of Directors. The offering period ended on August 1, 2022 and resulted in the subscription of 1,476,250 common shares for $26,720 at $18.10 per share. Participants in the subscription offering who purchased common shares for an aggregate purchase price of less than $5 were required to pay with cash. All participants (excluding Company directors and officers) purchasing common shares for an aggregate purchase price of $5 or more had an option to finance their purchase through a down-payment of at least 10% of the total purchase price and a seven-year promissory note for the balance due with interest at the greater of 2.00% or the applicable federal rate in effect as of August 1, 2022, which was 3.15%. Payments on the promissory note can be made either by payroll deductions or annual lump-sum payments of both principal and interest. Common shares purchased in the offering were pledged as security for the payment of the promissory note, and the common shares will not be issued until the promissory note is paid-in-full. Dividends will be paid on all subscribed shares, subject to forfeiture to the extent that payment is not ultimately made for the shares. All participants in the offering who purchased in excess of $5 of common shares were granted a "right" to purchase one additional common share at a price of $18.10 per share for every three common shares purchased in the offering. As a result of the stock subscription, rights to purchase 489,169 common shares were granted. Each right may be exercised at the rate of one-seventh per year and will expire seven years after the date that the right was granted. A purchaser may not exercise a right once he or she ceases to be the Company's employee or non-employee director, as applicable.

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v3.22.2.2

Operations by Business Segment	9 Months Ended
	Oct. 01, 2022
Segment Reporting [Abstract]
Operations by business segment [Text Block]	Operations by Business Segment We provide a wide range of arboricultural, horticultural, environmental and consulting services to residential, utility, commercial and government entities throughout the United States and Canada. We have two reportable operating segments organized by type or class of customer: Residential and Commercial, and Utility. Residential and Commercial--Residential and Commercial provides services to our residential and commercial customers including: the treatment, preservation, maintenance, removal and planting of trees, shrubs and other plant life; the practice of landscaping, grounds maintenance, tree surgery, tree feeding and tree spraying; the application of fertilizer, herbicides and insecticides; and natural resource management and consulting, forestry research and development, and environmental planning. Utility--Utility is principally engaged in providing services to our utility customers--investor-owned, municipal utilities, and rural electric cooperatives--including: the practice of line-clearing and vegetation management around power lines and rights-of-way and chemical brush control, natural resource management and consulting, forestry research and development, and environmental planning. All other operating activities, including research, technical support and laboratory diagnostic facilities, are included in “All Other.” Measurement of Segment Profit and Loss and Segment Assets--We evaluate performance and allocate resources based primarily on operating income and also actively manage business unit operating assets. Segment information, including reconciling adjustments, is presented consistent with the basis described in our 2021 Annual Report.     Segment information reconciled to the condensed consolidated financial statements was as follows: Utility Residential and Commercial All Other Reconciling Adjustments Consolidated Three Months Ended October 1, 2022 Revenues $ 217,305  $ 180,706  $ 934  $ —  $ 398,945  Income (loss) from operations 16,790  21,204  (4,033) (948) (a) 33,013  Interest expense (2,164) (2,164) Interest income 303  303  Other income (expense), net (3,371) (3,371) Income before income taxes $ 27,781  Segment assets, total $ 331,393  $ 305,216  $ —  $ 263,362  (b) $ 899,971  Three Months Ended October 2, 2021 Revenues $ 204,960  $ 164,737  $ 547  $ —  $ 370,244  Income (loss) from operations 23,124  17,595  (2,701) (1,085) (a) 36,933  Interest expense (1,449) (1,449) Interest income 39  39  Other income (expense), net (2,298) (2,298) Income before income taxes $ 33,225  Segment assets, total $ 286,157  $ 278,847  $ —  $ 210,709  (b) $ 775,713  Nine Months Ended October 1, 2022 Revenues $ 637,900  $ 504,064  $ 1,584  $ —  $ 1,143,548  Income (loss) from operations 49,260  50,759  (14,852) (5,665) (a) 79,502  Interest expense (5,312) (5,312) Interest income 489  489  Other income (expense), net (8,241) (8,241) Income before income taxes $ 66,438  Segment assets, total $ 331,393  $ 305,216  $ —  $ 263,362  (b) $ 899,971  Nine Months Ended October 2, 2021 Revenues $ 557,349  $ 465,524  $ 1,668  $ —  $ 1,024,541  Income (loss) from operations 50,015  51,893  (11,367) (2,610) (a) 87,931  Interest expense (4,093) (4,093) Interest income 161  161  Other income (expense), net (5,548) (5,548) Income before income taxes $ 78,451  Segment assets, total $ 286,157  $ 278,847  $ —  $ 210,709  (b) $ 775,713  Reconciling adjustments from segment reporting to the condensed consolidated financial statements include unallocated corporate items: (a)Reclassification of depreciation expense and allocation of corporate expenses. (b)Corporate assets include cash, prepaid expenses, corporate facilities, enterprise-wide information systems and other nonoperating assets.

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- Definition The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 31 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8924-108599 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 34 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8981-108599 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8721-108599 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 40 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e9031-108599 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8933-108599 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8933-108599 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 26 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8844-108599 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e9038-108599 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8933-108599 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8736-108599 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 42 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e9054-108599 Reference 12: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8657-108599 Reference 13: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8721-108599 Reference 14: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -URI http://asc.fasb.org/topic&trid=2134510 + Details Name: us-gaap_SegmentReportingDisclosureTextBlock Namespace Prefix: us-gaap_ Data Type: dtr-types:textBlockItemType Balance Type: na Period Type: duration

v3.22.2.2

Revenue Recognition (Notes)	9 Months Ended
	Oct. 01, 2022
Revenue Recognition [Abstract]
Revenue from contract from customer [Text Block]	Revenue Recognition We recognize revenue in accordance with ASC Topic 606, Revenue from Contracts with Customers. Nature of Performance Obligations and Significant Judgments At contract inception, the Company assesses the goods and services promised in its contracts with customers and identifies a performance obligation for each promised good or service (or bundle of goods and services) that is distinct. To identify the performance obligations, the Company considers each of the goods or services promised in the contract regardless of whether they are explicitly stated or are implied by customary business practices. Our contracts with our customers generally originate upon the completion of a quote for services for residential and commercial customers or the receipt of a purchase order (or similar work order) for utility customers. In some cases, our contracts are governed by master services agreements, in which case our contract under ASC 606 consists of the combination of the master services agreement and the quote/purchase order. Many of our contracts have a stated duration of one year or less or contain termination clauses that allow the customer to cancel the contract after a specified notice period, which is typically less than 90 days. Due to the fact that many of our arrangements allow the customer to terminate for convenience, the duration of the contract for revenue recognition purposes generally does not extend beyond the services that we have actually transferred. As a result, many of our contracts are, in effect, day-to-day or month-to-month contracts. Disaggregation of Revenue The following tables disaggregate our revenue for the three and nine months ended October 1, 2022 and October 2, 2021 by major sources: Three Months Ended October 1, 2022 Utility Residential and Commercial All Other Consolidated Type of service: Tree and plant care $ 138,112  $ 105,108  $ (28) $ 243,192  Grounds maintenance —  46,056  —  46,056  Storm damage services 7,004  2,564  —  9,568  Consulting and other 72,189  26,978  962  100,129  Total revenues $ 217,305  $ 180,706  $ 934  $ 398,945  Geography: United States $ 207,004  $ 168,405  $ 934  $ 376,343  Canada 10,301  12,301  —  22,602  Total revenues $ 217,305  $ 180,706  $ 934  $ 398,945  Three Months Ended October 2, 2021 Utility Residential and Commercial All Other Consolidated Type of service: Tree and plant care $ 140,039  $ 96,961  $ (29) $ 236,971  Grounds maintenance —  40,452  —  40,452  Storm damage services 10,052  2,688  —  12,740  Consulting and other 54,869  24,636  576  80,081  Total revenues $ 204,960  $ 164,737  $ 547  $ 370,244  Geography: United States $ 194,140  $ 153,009  $ 547  $ 347,696  Canada 10,820  11,728  —  22,548  Total revenues $ 204,960  $ 164,737  $ 547  $ 370,244  Nine Months Ended October 1, 2022 Utility Residential and Commercial All Other Consolidated Type of service: Tree and plant care $ 420,791  $ 294,206  $ (155) $ 714,842  Grounds maintenance —  128,114  —  128,114  Storm damage services 10,136  6,162  —  16,298  Consulting and other 206,973  75,582  1,739  284,294  Total revenues $ 637,900  $ 504,064  $ 1,584  $ 1,143,548  Geography: United States $ 608,411  $ 469,042  $ 1,584  $ 1,079,037  Canada 29,489  35,022  —  64,511  Total revenues $ 637,900  $ 504,064  $ 1,584  $ 1,143,548  Nine Months Ended October 2, 2021 Utility Residential and Commercial   All Other   Consolidated Type of service:             Tree and plant care $ 393,742  $ 271,682  $ (224) $ 665,200  Grounds maintenance —  116,810  —  116,810  Storm damage services 13,997  5,486  —  19,483  Consulting and other 149,610  71,546  1,892  223,048  Total revenues $ 557,349  $ 465,524  $ 1,668  $ 1,024,541  Geography:     United States $ 525,818  $ 432,158  $ 1,668  $ 959,644  Canada 31,531  33,366  —  64,897  Total revenues $ 557,349  $ 465,524  $ 1,668  $ 1,024,541  Contract Balances Our contract liabilities consist of advance payments and billings in excess of costs incurred and deferred revenue. The Company recognized $616 and $1,676 of revenue for the three and nine months ended October 1, 2022, that was included in the contract liability balance at December 31, 2021 and $239 and $1,294 of revenue for the three and nine months ended October 2, 2021, that was included in the contract liability balance at December 31, 2020. Net contract liabilities consisted of the following:   October 1, 2022   December 31, 2021 Contract liabilities - current $ 4,599  $ 3,888  Contract liabilities - noncurrent 1,951    1,845       Net contract liabilities $ 6,550    $ 5,733

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- Definition The entire disclosure of revenue from contract with customer to transfer good or service and to transfer nonfinancial asset. Includes, but is not limited to, disaggregation of revenue, credit loss recognized from contract with customer, judgment and change in judgment related to contract with customer, and asset recognized from cost incurred to obtain or fulfill contract with customer. Excludes insurance and lease contracts. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -URI http://asc.fasb.org/topic&trid=49130388 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130551-203045 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 13 -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130556-203045 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 12 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130554-203045 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130550-203045 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 12 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130554-203045 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 12 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130554-203045 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 12 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130554-203045 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130558-203045 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 12 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130554-203045 + Details Name: us-gaap_RevenueFromContractWithCustomerTextBlock Namespace Prefix: us-gaap_ Data Type: dtr-types:textBlockItemType Balance Type: na Period Type: duration

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- References No definition available. + Details Name: us-gaap_RevenueRecognitionAbstract Namespace Prefix: us-gaap_ Data Type: xbrli:stringItemType Balance Type: na Period Type: duration

v3.22.2.2

Fair Value Measurements and Financial Instruments	9 Months Ended
	Oct. 01, 2022
Fair Value Disclosures [Abstract]
Fair value measurements and financial instruments	Fair Value Measurements and Financial Instruments FASB ASC 820, “Fair Value Measurements and Disclosures" (“Topic 820”) defines fair value based on the price that would be received to sell an asset or the exit price that would be paid to transfer a liability in an orderly transaction between market participants at the measurement date. Market participants are defined as buyers or sellers in the principal or most advantageous market for the asset or liability that are independent of the reporting entity, knowledgeable and able and willing to transact for the asset or liability. Valuation Hierarchy--Topic 820 establishes a fair value hierarchy that prioritizes observable and unobservable inputs used to measure fair value. The hierarchy prioritizes the inputs into three broad levels: Level 1 inputs are quoted prices in active markets for identical assets or liabilities that the entity has the ability to access. Level 2 inputs are observable inputs other than prices included in Level 1, such as quoted prices for similar assets and liabilities in active markets; quoted prices for identical or similar assets and liabilities in markets that are not active; or other inputs that are observable or can be corroborated with observable market data. Level 3 inputs are unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets and liabilities. This includes certain pricing models, discounted cash flow methodologies and similar techniques that use significant unobservable inputs. Our assets and liabilities measured at fair value on a recurring basis at October 1, 2022 were as follows:     Fair Value Measurements at October 1, 2022 Using: Assets and Liabilities Recorded at Fair Value on a Recurring Basis Total Carrying Value at October 1, 2022 Quoted Prices in Active Markets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Assets: Assets invested for self-insurance Certificates of deposits, current $ 4,000  $ 4,000  $ —  $ —  Certificates of deposits, noncurrent 7,109  7,109  —  —  Available-for-sale debt securities: United States Government and agency securities 20,261  20,261  —  —  Corporate notes and bonds 257  257  —  —  Total available-for-sale debt securities 20,518  20,518  —  —  Marketable equity securities: Mutual funds 14,894  14,894  —  —  Corporate stocks 2,819  2,819  —  —  Exchange traded funds 1,133  1,133  —  —  Total marketable equity securities 18,846  18,846  —  —  Liabilities: Deferred compensation $ 4,759  $ —  $ 4,759  $ —  Our assets and liabilities measured at fair value on a recurring basis at December 31, 2021 were as follows:     Fair Value Measurements at December 31, 2021 Using: Assets and Liabilities Recorded at Fair Value on a Recurring Basis Total Carrying Value at December 31, 2021 Quoted Prices in Active Markets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Assets: Assets invested for self-insurance Certificates of deposits, current $ 4,250  $ 4,250  $ —  $ —  Certificates of deposits, noncurrent 10,609  10,609  —  —  Available-for-sale debt securities: United States Government and agency securities 3,230  3,230  —  —  Corporate notes and bonds 176  176  —  —  Total available-for-sale debt securities 3,406  3,406  —  —  Marketable equity securities: Mutual funds 7,476  7,476  —  —  Corporate stocks 1,934  1,934  —  —  Exchange traded funds 1,976  1,976  —  —  Total marketable equity securities 11,386  11,386  —  —  Liabilities: Deferred compensation $ 4,333  $ —  $ 4,333  $ —  The assets invested for self-insurance are certificates of deposit, stocks, bonds, mutual funds and exchange traded funds--classified as Level 1--based on quoted market prices of the identical underlying securities in active markets. The estimated fair value of the deferred compensation--classified as Level 2--is based on the value of the Company's common shares, determined by independent valuation. Fair Value of Financial Instruments--The fair values of our current financial assets and current liabilities, including cash, accounts receivable, accounts payable, and accrued expenses, among others, approximate their reported carrying values because of their short-term nature. Financial instruments classified as noncurrent assets and liabilities and their carrying values and fair values were as follows:   October 1, 2022 December 31, 2021 Carrying Value Fair Value Carrying Value Fair Value Assets: Available-for-sale debt securities $ 20,518  $ 20,518  $ 3,406  $ 3,406  Marketable equity securities 18,846  18,846  11,386  11,386  Liabilities: Revolving credit facility, noncurrent $ 98,099  $ 98,099  $ 46,832  $ 46,832  Senior unsecured notes, noncurrent 75,000  73,396  75,000  78,432  Term loans, noncurrent 2,038  1,973  2,373  2,431  Total $ 175,137  $ 173,468  $ 124,205  $ 127,695  The carrying value of our revolving credit facility approximates fair value--classified as Level 2--as the interest rates on the amounts outstanding are variable. The fair value of our senior unsecured notes and term loans--classified as Level 2--is determined based on expected future weighted-average interest rates with the same remaining maturities. Market Risk--In the normal course of business, we are exposed to market risk related to changes in foreign currency exchange rates, changes in interest rates and changes in fuel prices. We do not hold or issue derivative financial instruments for trading or speculative purposes. In prior years, we have used derivative financial instruments to manage risk, in part, associated with changes in interest rates and changes in fuel prices. Presently, we are not engaged in any hedging or derivative activities.

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- Definition The entire disclosure for derivatives and fair value of assets and liabilities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -URI http://asc.fasb.org/topic&trid=2155941 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -URI http://asc.fasb.org/topic&trid=2229140 + Details Name: us-gaap_DerivativesAndFairValueTextBlock Namespace Prefix: us-gaap_ Data Type: dtr-types:textBlockItemType Balance Type: na Period Type: duration

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- References No definition available. + Details Name: us-gaap_FairValueDisclosuresAbstract Namespace Prefix: us-gaap_ Data Type: xbrli:stringItemType Balance Type: na Period Type: duration

v3.22.2.2

Commitments and contingencies	9 Months Ended
	Oct. 01, 2022
Commitments and Contingencies Disclosure [Abstract]
Commitments and contingencies [Text Block]	Commitments and Contingencies We are party to a number of lawsuits, threatened lawsuits and other claims arising out of the normal course of business. On a quarterly basis, we assess our liabilities and contingencies in connection with outstanding legal proceedings utilizing the latest information available. Where it is probable that we will incur a loss and the amount of the loss can be reasonably estimated, we record a liability in our consolidated financial statements. These legal accruals may be increased or decreased to reflect any relevant developments on a quarterly basis. Where a loss is not probable or the amount of the loss is not estimable, we do not record a legal accrual, consistent with applicable accounting guidance. Based on information currently available to us, advice of counsel, and available insurance coverage, we believe that our established accruals are adequate and the liabilities arising from the legal proceedings will not have a material adverse effect on our consolidated financial condition. We note, however, that in light of the inherent uncertainty in legal proceedings, there can be no assurance that the ultimate resolution of a matter will not exceed established accruals. As a result, the outcome of a particular matter or a combination of matters may be material to our results of operations for a particular period, depending upon the size of the loss or our income for that particular period. In November 2017, a suit was filed in Savannah, Georgia state court ("State Court") against Davey Tree, its subsidiary, Wolf Tree, Inc. ("Wolf Tree"), a former Davey employee, two Wolf Tree employees, and a former Wolf Tree employee alleging various acts of negligence and seeking compensatory and punitive damages for wrongful death and assault and battery of the plaintiff’s husband, a Wolf Tree employee, who was shot and killed in August 2017. In July 2018, a related survival action was filed by the deceased’s estate against Davey Tree, its subsidiary, Wolf Tree, and four current and former employees in Savannah, Georgia, which arises out of the same allegations, seeks compensatory and punitive damages and also includes three Racketeer Influenced and Corrupt Organizations Act ("RICO") claims under Georgia law seeking compensatory damages, treble damages, and punitive damages. The 2018 case was removed to the United States District Court for the Southern District of Georgia, Savannah Division ("Federal Court"), on August 2, 2018. The Company filed a motion to dismiss the RICO claims. Plaintiffs filed a motion to remand the case to state court, which the Company has opposed. The cases were mediated unsuccessfully in December 2018 and the State Court case was originally set for trial on January 22, 2019. However, as discussed below, all of the civil cases were later stayed on December 28, 2018 and currently remain stayed. On December 6, 2018, a former Wolf Tree employee pled guilty to conspiracy to conceal, harbor, and shield illegal aliens. On December 21, 2018, the United States federal prosecutors filed a motion to stay both actions on the grounds that on December 13, 2018, an indictment was issued charging two former Wolf Tree employees and another individual with various crimes, including conspiracy to murder the deceased. Two of the three individually charged defendants have pled guilty to charges related to their involvement with the murder and other illegal activities on March 28, 2022 and April 11, 2022. A third individual criminally charged defendant was scheduled to go to trial on October 25, 2022, and was convicted of charges for his role in the murder, harboring of illegal aliens; and money laundering conspiracy. All three criminal defendants have not yet been sentenced. Previously, on December 17, 2018, the United States Attorney’s Office for the Southern District of Georgia informed the Company and Wolf Tree that they are also under investigation for potential violations of immigration and other laws relating to the subject matter of the ongoing criminal investigation referenced above. The Company and Wolf Tree are cooperating with the investigation and have met with both the civil and criminal divisions of the Department of Justice ("DOJ") to resolve the matter. To date, the matter currently remains unresolved. On December 28, 2018, the State Court granted the United States’ motion to stay but indicated that it would nonetheless consider certain pending matters, including: (1) Plaintiff and a co-defendant’s motions that Davey Tree be forced to produce privileged documents and testimony, which had been submitted to a Special Master for recommendation; and (2) the Defendants’ motions for summary judgment. On January 11, 2019, the Special Master issued his recommendation that both Plaintiff and the co-defendant’s motions to force Davey to disclose privileged information be denied. The State Court judge has not yet moved on the recommendation. On January 29, 2019, the State Court heard oral argument on Defendants’ motions for summary judgment, and the motions remain pending during the stay of the cases. On January 28, 2019, the Federal Court also granted the United States’ motion to stay. On January 29, 2019, the State Court ordered the parties to return to mediation, which occurred on April 17, 2019 but was unsuccessful in resolving the matters. All civil cases continue to remain stayed, although Plaintiffs' counsel has submitted a letter to the Court seeking a lift of the stay. In both cases, the Company has denied all liability and is vigorously defending the action. It also has retained separate counsel for some of the individual defendants, each of whom has denied all liability and also is vigorously defending the action. Northern California Wildfires Five lawsuits have been filed that name contractors for PG&E Corporation and its subsidiary, Pacific Gas and Electric Company (together, "PG&E"), including Davey Tree, with respect to claims arising from wildfires that occurred in Pacific Gas and Electric Company’s service territory in northern California beginning on October 8, 2017. An action was brought on August 8, 2019 in Napa County Superior Court, entitled Donna Walker, et al. v. Davey Tree Surgery Company, et al., Case No. 19CV001194. An action was brought on October 8, 2019 in San Francisco County Superior Court, entitled Quinisha Kyree Abram, et al. v. ACRT, Inc., et. al, Case No. CGC-19-579861. Three additional actions were brought on January 28, 2021 in San Francisco County Superior Court, by fire victims represented by a trust, which was assigned contractual rights in the PG&E bankruptcy proceedings. These cases are entitled John K. Trotter, Trustee of the PG&E Fire Victim Trust v. Davey Resource Group, Inc., et al., Case No. CGC-21-589438; John K. Trotter, Trustee of the PG&E Fire Victim Trust v. Davey Resource Group, Inc., et al., Case No. CGC-21-589439; and John K. Trotter, Trustee of the PG&E Fire Victim Trust v. ACRT Pacific, LLC, et al., Case No. CGC-21-589441. On September 22, 2021, the court granted Davey Tree's petition to coordinate all cases, including Walker, as a California Judicial Council Coordination Proceeding, In Re North Bay Fire Cases, JCCP No. 4955. As a result of the coordination order, all five of the individual actions are stayed in their home jurisdictions. The next case management conference in JCCP No. 4955 was held on February 24, 2022. At that case management conference, the Court ordered a mediation between the Plaintiffs and Davey Tree related to Davey Tree's contracts with PG&E. Separately, the court ordered that all parties shall participate in a mediation with the Plaintiffs prior to January 27, 2023. An initial mediation date for all the Plaintiffs and Davey Tree related to parties on the contractual issues was set for October 17, 2022 but did not resolve at this initial mediation. The Defendants have also received evidence from the Plaintiff's Trust and PG&E collected by those parties during the PG&E bankruptcy proceedings and Davey Tree's experts have begun their initial inspection of the evidence. Davey Tree has responded to all claims asserted by the Plaintiffs in these actions, denying all liability in these cases and is vigorously defending against Plaintiffs' alleged claims. In all cases, the Company denies all liability and will vigorously defend the actions.

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- Definition The entire disclosure for legal proceedings, legal contingencies, litigation, regulatory and environmental matters and other contingencies. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -URI http://asc.fasb.org/topic&trid=2127136 + Details Name: us-gaap_LegalMattersAndContingenciesTextBlock Namespace Prefix: us-gaap_ Data Type: dtr-types:textBlockItemType Balance Type: na Period Type: duration

v3.22.2.2

The Davey 401KSOP and Employee Stock Ownership Plan (Notes)	9 Months Ended
	Oct. 01, 2022
The Davey 401KSOP and Employee Stock Ownership Plan [Abstract]
The Davey 401KSOP and Employee Stock Ownership Plan [Text Block]	The Davey 401KSOP and Employee Stock Ownership Plan On March 15, 1979, the Company consummated a plan, which transferred control of the Company to its employees. As a part of this plan, the Company initially sold 120,000 common shares (presently, 46,080,000 common shares adjusted for stock splits) to its Employee Stock Ownership Trust (“ESOT”) for $2,700. The Employee Stock Ownership Plan (“ESOP”), in conjunction with the related ESOT, provided for the grant to certain employees of certain ownership rights in, but not possession of, the common shares held by the trustee of the ESOT. Annual allocations of shares have been made to individual accounts established for the benefit of the participants. Defined Contribution and Savings Plans--Most employees are eligible to participate in The Davey 401KSOP and ESOP Plan. Effective January 1, 1997, the plan commenced operations and retained the existing ESOP participant accounts and incorporated a deferred savings plan (a “401(k) plan”) feature. Participants in the 401(k) plan are allowed to make before-tax contributions, within Internal Revenue Service established limits, through payroll deductions. Effective January 1, 2020, we match, in either cash or our common shares, 100% of the first three percent and 50% of the next two percent of each participant's before-tax contribution, limited to the first five percent of the employee’s compensation deferred each year. All nonbargaining domestic employees who attained age 21 and completed one year of service are eligible to participate. In May 2004, we adopted the 401K Match Restoration Plan, a defined contribution plan that supplements the retirement benefits of certain employees that participate in the savings plan feature of The Davey 401KSOP and ESOP Plan, but are limited in contributions because of tax rules and regulations. Our common shares are not listed or traded on an established public trading market, and market prices are, therefore, not available. Semiannually, an independent stock valuation firm assists with the appraisal of the fair market value of our common shares based upon our performance and financial condition. The Davey 401KSOP and ESOP Plan includes a put option for shares of the Company’s common stock distributed from the plan. Shares are distributed from the Davey 401KSOP and ESOP Plan to former participants of the plan, their beneficiaries, donees or heirs (each, a “participant”). Since our common stock is not currently traded on an established securities market, if the owners of distributed shares desire to sell their shares, the Company is required to purchase the shares at fair value for two 60-day periods after distribution of the shares from the Davey 401KSOP and ESOP. The fair value of distributed shares subject to the put option totaled $990 and $1,279 as of October 1, 2022 and December 31, 2021, respectively. The fair value of the shares held in the Davey 401KSOP and ESOP totaled $167,130 and $168,652 as of October 1, 2022 and December 31, 2021, respectively. Due to the Company’s obligation under the put option, the distributed shares subject to the put option and the shares held in the Davey 401KSOP and ESOP (collectively referred to as 401KSOP and ESOP related shares) are recorded at fair value, classified as temporary equity in the mezzanine section of the consolidated balance sheets and totaled $168,120 and $169,931 as of October 1, 2022 and December 31, 2021, respectively. Changes in the fair value of the 401KSOP and ESOP Plan related shares are reflected in retained earnings while net share activity associated with the 401KSOP and ESOP Plan related shares are first reflected in additional paid-in capital and then retained earnings if additional paid-in capital is insufficient.

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- Definition The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123467817&loc=SL123496158-112644 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=123467817&loc=SL123496158-112644 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 14 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=123467817&loc=SL123496171-112644 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123467817&loc=SL123496171-112644 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 18 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=123467817&loc=SL123496189-112644 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 13 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=123467817&loc=SL123496158-112644 Reference 8: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -URI http://asc.fasb.org/topic&trid=2208762 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 18 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123467817&loc=SL123496189-112644 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 13 -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=123467817&loc=SL123496158-112644 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123467817&loc=SL123496171-112644 Reference 12: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 18 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123467817&loc=SL123496189-112644 Reference 13: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 16 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123467817&loc=SL123496180-112644 Reference 14: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 13 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=123467817&loc=SL123496158-112644 Reference 15: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(e)(1)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 + Details Name: us-gaap_StockholdersEquityNoteDisclosureTextBlock Namespace Prefix: us-gaap_ Data Type: dtr-types:textBlockItemType Balance Type: na Period Type: duration

v3.22.2.2

Investments, Debt and Equity Securities	9 Months Ended
	Oct. 01, 2022
Investments, Debt and Equity Securities [Abstract]
Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure	Marketable Securities The following table summarizes available-for-sale debt securities held at October 1, 2022 by asset type: Available-For-Sale Debt Securities Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (Net Carrying Amount) October 1, 2022 Fixed maturity: United States Government and agency securities $ 20,556  $ 6  $ (301) $ 20,261  Corporate notes and bonds 315  —  (58) 257  Total available-for-sale debt securities $ 20,871  $ 6  $ (359) $ 20,518  December 31, 2021 Fixed maturity: United States Government and agency securities $ 3,244  $ 11  $ (25) $ 3,230  Corporate notes and bonds 174  2  —  176  Total available-for-sale debt securities $ 3,418  $ 13  $ (25) $ 3,406  Marketable securities are composed of available-for-sale debt securities and marketable equity securities and all marketable securities are held at fair value. We carry a portion of our marketable securities portfolio in long-term assets since they are generally held for the settlement of our insurance claims processed through our wholly owned captive insurance subsidiary. Available-for-sale debt securities are included in marketable securities and other investments totaling $20,518 and $3,406 at October 1, 2022 and December 31, 2021, respectively. Realized gains and losses on sales of available-for-sale debt securities are recognized in net income on the specific identification basis. Changes in the fair values of available-for-sale debt securities that are determined to be holding gains or losses are recorded through accumulated other comprehensive income (loss) net of applicable taxes, within shareholders' equity. In assessing whether a credit loss exists, we evaluate our ability to hold the investment, the strength of the underlying collateral and the extent to which the investment's amortized cost or cost, as appropriate, exceeds its related fair value. We held approximately $18,846 and $11,386 in marketable equity securities as of October 1, 2022 and December 31, 2021, respectively. Realized and unrealized gains and losses on marketable equity securities are included in other income (expense) in the Consolidated Statements of Operations. The net carrying values of available-for-sale debt securities at October 1, 2022 by contractual maturity, are shown below. Expected maturities may differ from contractual maturities because the issuers of the securities may have the right to prepay obligations without prepayment penalties. Amortized Cost Fair Value Due: Less than one year $ 12,999  $ 12,997  One year through five years 5,729  5,568  Five years through ten years 234  191  After ten years 1,909  1,762  Total $ 20,871  $ 20,518

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- Definition The entire disclosure for investments in certain debt and equity securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 320 -URI http://asc.fasb.org/subtopic&trid=2209399 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -URI http://asc.fasb.org/subtopic&trid=2324412 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -URI http://asc.fasb.org/topic&trid=2196928 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 940 -SubTopic 320 -URI http://asc.fasb.org/subtopic&trid=2176304 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1403 -Paragraph (b) + Details Name: us-gaap_InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock Namespace Prefix: us-gaap_ Data Type: dtr-types:textBlockItemType Balance Type: na Period Type: duration

v3.22.2.2

Basis of Financial Statement Preparation (Policies)	9 Months Ended
	Oct. 01, 2022
Accounting Policies [Abstract]
Basis of financial statement preparation, policy [Policy Text Block]	The consolidated financial statements present the financial position, results of operations and cash flows of The Davey Tree Expert Company and its subsidiaries. When we refer to “we,” “us,” “our,” the "Company," “Davey,” or “Davey Tree”, we mean The Davey Tree Expert Company and its subsidiaries, unless otherwise expressly stated or the context indicates otherwise. We have prepared the accompanying unaudited condensed consolidated financial statements in accordance with accounting principles generally accepted in the United States (“U.S. GAAP”), as codified in the Financial Accounting Standards Board (“FASB”) Accounting Standards Codification ("ASC"), and with the rules and regulations of the Securities and Exchange Commission (“SEC”) for interim financial information. The condensed consolidated financial statements include all adjustments which, in the opinion of management, are necessary for a fair presentation of the results for the interim periods presented. All such adjustments are of a normal, recurring nature. All intercompany accounts and transactions have been eliminated in consolidation. Certain information and disclosures required by U.S. GAAP for complete financial statements have been omitted in accordance with the rules and regulations of the SEC. We suggest that these condensed consolidated financial statements be read in conjunction with the financial statements included in our annual report on Form 10-K for the year ended December 31, 2021 (the “2021 Annual Report”).
Use of estimates, policy [Policy Text Block]	Use of Estimates in Financial Statement Preparation--The preparation of financial statements in accordance with U.S. GAAP requires the use of estimates and assumptions that affect reported amounts. Our condensed consolidated financial statements include amounts that are based on management’s best estimates and judgments. Estimates are used for, but not limited to, accounts receivable valuation, depreciable lives of fixed assets, long-lived asset valuation, self-insurance accruals, income taxes, stock valuation and revenue recognition. Actual results could differ from those estimates.
Income tax, policy [Policy Text Block]	Our income tax provision for interim periods is determined using an estimate of our annual effective tax rate adjusted for discrete items, if any, that are taken into account in the relevant period. Each quarter we update our estimate of the annual effective tax rate and, if our estimated annual tax rate changes, we make a cumulative adjustment.
Earnings per share, policy [Policy Text Block]	We calculate our basic earnings per share by dividing net income or net loss by the weighted average number of common shares outstanding during the period. Diluted earnings per share are calculated in a similar manner, but include the effect of dilutive securities. To the extent these securities are antidilutive, they are excluded from the calculation of earnings per share.
Segment reporting, policy [Policy Text Block]	We have two reportable operating segments organized by type or class of customer: Residential and Commercial, and Utility.
Commitments and Contingencies, Policy	On a quarterly basis, we assess our liabilities and contingencies in connection with outstanding legal proceedings utilizing the latest information available. Where it is probable that we will incur a loss and the amount of the loss can be reasonably estimated, we record a liability in our consolidated financial statements. These legal accruals may be increased or decreased to reflect any relevant developments on a quarterly basis. Where a loss is not probable or the amount of the loss is not estimable, we do not record a legal accrual, consistent with applicable accounting guidance.

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- Definition Disclosure of accounting policy for basis of accounting, or basis of presentation, used to prepare the financial statements (for example, US Generally Accepted Accounting Principles, Other Comprehensive Basis of Accounting, IFRS). + References No definition available. + Details Name: us-gaap_BasisOfAccountingPolicyPolicyTextBlock Namespace Prefix: us-gaap_ Data Type: dtr-types:textBlockItemType Balance Type: na Period Type: duration

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- Definition Disclosure of accounting policy for commitments and contingencies, which may include policies for recognizing and measuring loss and gain contingencies. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123368208&loc=d3e12565-110249 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 954 -SubTopic 450 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6491354&loc=d3e6049-115624 + Details Name: us-gaap_CommitmentsAndContingenciesPolicyTextBlock Namespace Prefix: us-gaap_ Data Type: dtr-types:textBlockItemType Balance Type: na Period Type: duration

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- Definition Disclosure of accounting policy for computing basic and diluted earnings or loss per share for each class of common stock and participating security. Addresses all significant policy factors, including any antidilutive items that have been excluded from the computation and takes into account stock dividends, splits and reverse splits that occur after the balance sheet date of the latest reporting period but before the issuance of the financial statements. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=124432515&loc=d3e3630-109257 + Details Name: us-gaap_EarningsPerSharePolicyTextBlock Namespace Prefix: us-gaap_ Data Type: dtr-types:textBlockItemType Balance Type: na Period Type: duration

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- Definition Disclosure of accounting policy for income taxes, which may include its accounting policies for recognizing and measuring deferred tax assets and liabilities and related valuation allowances, recognizing investment tax credits, operating loss carryforwards, tax credit carryforwards, and other carryforwards, methodologies for determining its effective income tax rate and the characterization of interest and penalties in the financial statements. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=123427490&loc=d3e32247-109318 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32847-109319 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32840-109319 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=124431353&loc=SL116659661-227067 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32639-109319 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=123427490&loc=d3e32280-109318 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 17 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32809-109319 + Details Name: us-gaap_IncomeTaxPolicyTextBlock Namespace Prefix: us-gaap_ Data Type: dtr-types:textBlockItemType Balance Type: na Period Type: duration

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- Definition Disclosure of accounting policy for segment reporting. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 29 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8864-108599 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 29 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8864-108599 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e9038-108599 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 29 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8864-108599 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 29 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8864-108599 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 29 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8864-108599 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 29 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8864-108599 + Details Name: us-gaap_SegmentReportingPolicyPolicyTextBlock Namespace Prefix: us-gaap_ Data Type: dtr-types:textBlockItemType Balance Type: na Period Type: duration

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- Definition Disclosure of accounting policy for the use of estimates in the preparation of financial statements in conformity with generally accepted accounting principles. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6191-108592 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6161-108592 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6143-108592 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e5967-108592 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6061-108592 Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6132-108592 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e5967-108592 + Details Name: us-gaap_UseOfEstimates Namespace Prefix: us-gaap_ Data Type: dtr-types:textBlockItemType Balance Type: na Period Type: duration

v3.22.2.2

Accounts Receivable, Net and Supplemental Balance-Sheet Information (Tables)	9 Months Ended
	Oct. 01, 2022
Accounts Receivable, Net and Supplemental Balance-Sheet Information [Abstract] [Abstract]
Accounts receivable, net [Table Text Block]	Accounts receivable, net, consisted of the following: Accounts receivable, net October 1, 2022 December 31, 2021 Accounts receivable $ 236,903  $ 215,336  Unbilled receivables(1) 92,732  65,957    329,635  281,293  Less allowances for credit losses 3,344  3,013  Accounts receivable, net $ 326,291  $ 278,280  (1)    Unbilled receivables consist of work-in-process in accordance with the terms of contracts, primarily with utility services customers.
Schedule of Other Current Assets [Table Text Block]	The following items comprised the amounts included in the balance sheets: Other current assets October 1, 2022 December 31, 2021 Refundable income taxes $ 364  $ 1,346  Prepaid expenses 41,619  30,911  Assets invested for self-insurance 4,000  4,250  Other 898  1,346  Total $ 46,881  $ 37,853
Property, Plant and Equipment [Table Text Block]	Property and equipment, net October 1, 2022 December 31, 2021 Land and land improvements $ 26,075  $ 22,129  Buildings and leasehold improvements 75,097  63,933  Equipment 664,518  646,552    765,690  732,614  Less accumulated depreciation 502,989  504,629  Total $ 262,701  $ 227,985
Schedule of Other Assets, Noncurrent [Table Text Block]	Other assets, noncurrent October 1, 2022 December 31, 2021 Investment--cost-method affiliate $ 1,258  $ 1,258  Deferred income taxes 5,032  4,937  Cloud computing arrangements 3,353  6,530  Other 4,661  4,539  Total $ 14,304  $ 17,264
Accrued expenses [Table Text Block]	Accrued expenses October 1, 2022 December 31, 2021 Employee compensation $ 34,727  $ 37,828  Accrued compensated absences 11,943  11,007  Self-insured medical claims 3,088  2,891  Income tax payable 6,685  145  Customer advances, deposits 6,957  4,009  Taxes, other than income 17,876  13,789  Other 3,771  5,469  Total $ 85,047  $ 75,138
Other current liabilities [Table Text Block]	Other current liabilities October 1, 2022 December 31, 2021 Current portion of: Lease liability-operating leases $ 31,726  $ 28,682  Self-insurance accruals 42,774  48,867  Total $ 74,500  $ 77,549
Other Noncurrent Liabilities [Table Text Block]	Other noncurrent liabilities October 1, 2022 December 31, 2021 Non-qualified retirement plans $ 9,200  $ 8,713  Other 2,981  2,870  Total $ 12,181  $ 11,583

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- Definition Tabular disclosure of other current liabilities. + References No definition available. + Details Name: us-gaap_OtherCurrentLiabilitiesTableTextBlock Namespace Prefix: us-gaap_ Data Type: dtr-types:textBlockItemType Balance Type: na Period Type: duration

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- Definition Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(13)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 + Details Name: us-gaap_PropertyPlantAndEquipmentTextBlock Namespace Prefix: us-gaap_ Data Type: dtr-types:textBlockItemType Balance Type: na Period Type: duration

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- Definition Tabular disclosure of the various types of trade accounts and notes receivable and for each the gross carrying value, allowance, and net carrying value as of the balance sheet date. Presentation is categorized by current, noncurrent and unclassified receivables. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3,4) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details Name: us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock Namespace Prefix: us-gaap_ Data Type: dtr-types:textBlockItemType Balance Type: na Period Type: duration

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- Definition Tabular disclosure of noncurrent assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details Name: us-gaap_ScheduleOfOtherAssetsNoncurrentTextBlock Namespace Prefix: us-gaap_ Data Type: dtr-types:textBlockItemType Balance Type: na Period Type: duration

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v3.22.2.2

Business Combinations Business Combinations (Tables)	9 Months Ended
	Oct. 01, 2022
Business Acquisition [Line Items]
Schedule of Business Acquisitions, by Acquisition [Table Text Block]	The following table summarizes the preliminary purchase price allocation of the estimated fair values of the assets acquired and liabilities assumed: Nine Months Ended October 1, 2022 Year Ended December 31, 2021 Detail of acquisitions: Assets acquired:     Cash $ —  $ 292  Receivables —  509  Operating supplies 39  1,044  Prepaid expense —  203  Equipment 1,186  4,049  Deposits and other 265  1,574  Intangible assets 1,350  3,005  Goodwill 3,175  7,723  Liabilities assumed (329) (3,713) Debt issued for purchases of businesses (1,233) (2,961) Cash paid $ 4,453  $ 11,725

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details Name: us-gaap_BusinessAcquisitionLineItems Namespace Prefix: us-gaap_ Data Type: xbrli:stringItemType Balance Type: na Period Type: duration

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- Definition Tabular disclosure of a material business combination completed during the period, including background, timing, and recognized assets and liabilities. This table does not include leveraged buyouts. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1486-128463 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 + Details Name: us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTextBlock Namespace Prefix: us-gaap_ Data Type: dtr-types:textBlockItemType Balance Type: na Period Type: duration

v3.22.2.2

Identified Intangible Assets and Goodwill, Net (Tables)	9 Months Ended
	Oct. 01, 2022
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of identified intangible assets and goodwill, net [Table Text Block]	The carrying amounts of the identified intangible assets and goodwill acquired in connection with our acquisitions were as follows:   October 1, 2022 December 31, 2021 Carrying Amount Accumulated Amortization Carrying Amount Accumulated Amortization Amortized intangible assets:         Customer lists/relationships $ 33,498  $ 26,222  $ 32,294  $ 24,090  Employment-related 10,451  8,754  9,946  8,301  Tradenames 8,641  6,977  8,426  6,642  Amortized intangible assets 52,590  $ 41,953  50,666  $ 39,033  Less accumulated amortization 41,953    39,033    Identified intangible assets, net $ 10,637    $ 11,633    Goodwill $ 58,999    $ 55,980
Schedule of Goodwill [Table Text Block]	The changes in the carrying amounts of goodwill, by segment, for the nine months ended October 1, 2022 and the year ended December 31, 2021 were as follows: Balance at January 1, 2022 Acquisitions Translation and Other Adjustments Balance at October 1, 2022 Utility $ 4,911  $ 30  $ —  $ 4,941  Residential and Commercial 51,069  3,145  (156) 54,058  Total $ 55,980  $ 3,175  $ (156) $ 58,999  Balance at January 1, 2021 Acquisitions Translation and Other Adjustments Balance at December 31, 2021 Utility $ 4,911  $ —  $ —  $ 4,911  Residential and Commercial 43,345  7,723  1  51,069  Total $ 48,256  $ 7,723  $ 1  $ 55,980
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]	The estimated future aggregate amortization expense of intangible assets, as of October 1, 2022, was as follows:   Estimated Future Amortization Expense Remaining three months of 2022 $ 820  2023 3,073  2024 2,752  2025 1,970  2026 1,132  2027 648  Thereafter 242  $ 10,637

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- Definition Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13854-109267 + Details Name: us-gaap_ScheduleOfGoodwillTextBlock Namespace Prefix: us-gaap_ Data Type: dtr-types:textBlockItemType Balance Type: na Period Type: duration

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- Definition Tabular disclosure of the amount of amortization expense expected to be recorded in succeeding fiscal years for finite-lived intangible assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details Name: us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock Namespace Prefix: us-gaap_ Data Type: dtr-types:textBlockItemType Balance Type: na Period Type: duration

v3.22.2.2

Long-Term Debt and Commitments Related to Letters of Credit (Tables)	9 Months Ended
	Oct. 01, 2022
Debt Disclosure [Abstract]
Schedule of long-term debt [Table Text Block]	Our long-term debt consisted of the following: October 1, 2022 December 31, 2021 Revolving credit facility:     Swing-line borrowings $ 23,099  $ 16,832  LIBOR borrowings 75,000  30,000    98,099  46,832  Senior unsecured notes: 3.99% Senior unsecured notes 50,000  50,000  4.00% Senior unsecured notes 25,000  25,000  75,000  75,000  Term loans 33,128  25,182    206,227  147,014  Less debt issuance costs 558  674  Less current portion 31,090  22,809    $ 174,579  $ 123,531

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- Definition Tabular disclosure of information pertaining to short-term and long-debt instruments or arrangements, including but not limited to identification of terms, features, collateral requirements and other information necessary to a fair presentation. + References No definition available. + Details Name: us-gaap_ScheduleOfDebtTableTextBlock Namespace Prefix: us-gaap_ Data Type: dtr-types:textBlockItemType Balance Type: na Period Type: duration

v3.22.2.2

Leases (Tables)	9 Months Ended
	Oct. 01, 2022
Leases [Abstract]
Schedule of assets and liabilities, leases [Table Text Block]	The following table summarizes the amounts recognized in our Condensed Consolidated Balance Sheet related to leases: Condensed Consolidated Balance Sheet Classification October 1, 2022 December 31, 2021 Assets   Operating lease assets Right-of-use assets - operating leases $ 95,350  $ 86,423  Finance lease assets Property and equipment, net 13,268  11,592  Total lease assets   $ 108,618  $ 98,015  Liabilities   Current operating lease liabilities Other current liabilities $ 31,726  $ 28,682  Non-current operating lease liabilities Lease liabilities - operating leases 62,586  57,335  Total operating lease liabilities   94,312  86,017  Current portion of finance lease liabilities Current portion of long-term debt and finance lease liabilities 2,998  2,459  Non-current finance lease liabilities Lease liabilities - finance leases 9,704  8,646  Total finance lease liabilities   12,702  11,105  Total lease liabilities   $ 107,014  $ 97,122
Income and expenses, lessee [Table Text Block]	The components of lease cost recognized within our Condensed Consolidated Statements of Operations were as follows: Three Months Ended Nine Months Ended Condensed Consolidated Statements of Operations Classification October 1, 2022 October 2, 2021 October 1, 2022 October 2, 2021 Operating lease cost Operating expense $ 6,649  $ 4,965  $ 19,095  $ 13,065  Operating lease cost Selling expense 2,926  2,631  8,492  7,718  Operating lease cost General and administrative expense 304  290  883  867  Finance lease cost: Amortization of right-of-use assets Depreciation and amortization 889  752  2,334  1,985  Interest expense on lease liabilities Interest expense 74  52  196  134  Other lease cost (1) Operating expense 1,271  999  3,613  2,839  Other lease cost (1) Selling expense 235  360  1,059  1,013  Other lease cost (1) General and administrative expense 27  8  59  28  Total lease cost $ 12,375  $ 10,057  $ 35,731  $ 27,649  (1) Other lease cost includes short-term lease costs and variable lease costs.
Supplemental cash flow information, leases [Table Text Block]	Supplemental Cash Flow Information Related to Leases Nine Months Ended October 1, 2022 October 2, 2021 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ (29,194) $ (21,822) Operating cash flows from finance leases (196) (134) Financing cash flows from finance leases (2,313) (2,688) Right-of-use assets obtained in exchange for lease obligations: Operating leases 38,403  47,069  Finance leases 3,910  4,174
Finance and operating lease, liability, maturity [Table Text Block]	Maturity Analysis of Lease Liabilities As of October 1, 2022 Operating Leases Finance Leases Remaining three months of 2022 $ 9,301  $ 747  2023 31,878  3,237  2024 24,610  3,106  2025 16,964  2,472  2026 9,277  2,101  2027 3,343  1,123  Thereafter 4,061  732  Total lease payments 99,434  13,518  Less interest 5,122  816  Total $ 94,312  $ 12,702

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- Definition [Table Text Block] for Finance and operating lease, liability, maturity [Table] + References No definition available. + Details Name: davey_FinanceandoperatingleaseliabilitymaturityTableTextBlock Namespace Prefix: davey_ Data Type: dtr-types:textBlockItemType Balance Type: na Period Type: duration

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- Definition [Table Text Block] for Schedule of assets and liabilities, leases [Table] + References No definition available. + Details Name: davey_ScheduleofassetsandliabilitiesleasesTableTextBlock Namespace Prefix: davey_ Data Type: dtr-types:textBlockItemType Balance Type: na Period Type: duration

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- Definition [Table Text Block] for Supplemental cash flow information, leases [Table] + References No definition available. + Details Name: davey_SupplementalcashflowinformationleasesTableTextBlock Namespace Prefix: davey_ Data Type: dtr-types:textBlockItemType Balance Type: na Period Type: duration

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- Definition Tabular disclosure of lessee's lease cost. Includes, but is not limited to, interest expense for finance lease, amortization of right-of-use asset for finance lease, operating lease cost, short-term lease cost, variable lease cost and sublease income. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918686-209980 + Details Name: us-gaap_LeaseCostTableTextBlock Namespace Prefix: us-gaap_ Data Type: dtr-types:textBlockItemType Balance Type: na Period Type: duration

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- References No definition available. + Details Name: us-gaap_LeasesAbstract Namespace Prefix: us-gaap_ Data Type: xbrli:stringItemType Balance Type: na Period Type: duration

v3.22.2.2

Stock-Based Compensation (Tables)	9 Months Ended
	Oct. 01, 2022
Share-based Payment Arrangement [Abstract]
Schedule of stock-based compensation expense under all share-based payment plans [Table Text Block]	Stock-based compensation expense under all share-based payment plans -- our Employee Stock Purchase Plan, stock option plans, stock-settled stock appreciation rights ("SSARs") and restricted stock units ("RSUs") -- was included in the results of operations as follows:   Three Months Ended Nine Months Ended October 1, 2022 October 2, 2021 October 1, 2022 October 2, 2021 Compensation expense, all share-based payment plans $ 1,658  $ 1,167  $ 5,244  $ 3,432
Schedule of share-based compensation, stock-settled stock appreciation rights award activity [Table Text Block]	The following table summarizes our SSARs as of October 1, 2022. Stock-Settled Stock Appreciation Rights Number of Rights Weighted- Average Award Date Value Weighted- Average Remaining Contractual Life Unrecognized Compensation Cost Aggregate Intrinsic Value Unvested, January 1, 2022 87,534  $ 1.92        Granted —  —        Forfeited —  —        Vested (43,752) 1.92        Unvested, October 1, 2022 43,782  $ 1.92  0.3 years $ 19  $ 792
Schedule of share-based compensation, restricted stock units award activity [Table Text Block]	The following table summarizes PRSUs and RSUs as of October 1, 2022. Restricted Stock Units Number of Stock Units Weighted- Average Grant Date Value Weighted- Average Remaining Contractual Life Unrecognized Compensation Cost Aggregate Intrinsic Value Unvested, January 1, 2022 740,160  $ 12.49        Granted 351,357  17.89        Forfeited (1,000) 17.89        Vested (181,176) 11.04        Unvested, October 1, 2022 909,341  $ 14.86  2.0 years $ 8,315  $ 13,517  Employee PRSUs 851,640  $ 14.89  2.0 years $ 7,863  $ 12,685  Nonemployee Director RSUs 57,701  $ 14.42  2.2 years $ 452  $ 832
Schedule of share-based payment award, stock options, valuation assumptions [Table Text Block]	The fair values of stock-based awards granted were estimated at the dates of grant with the following weighted-average assumptions.   Nine Months Ended October 1, 2022 October 2, 2021 Volatility rate 9.7  % 9.9  % Risk-free interest rate 1.7  % .3  % Expected dividend yield .4  % .4  % Expected life of awards (years) 3.0 3.0
Schedule of share-based compensation, stock options activity [Table Text Block]	The following table summarizes activity under the stock option plans for the nine months ended October 1, 2022. Stock Options Number of Options Outstanding Weighted- Average Exercise Price Weighted- Average Remaining Contractual Life Aggregate Intrinsic Value Outstanding, January 1, 2022 2,350,934  $ 8.56      Granted —  —      Exercised (219,143) 8.29      Forfeited (17,820) 8.01      Outstanding, October 1, 2022 2,113,971  $ 8.59  4.2 years $ 20,104  Exercisable, October 1, 2022 1,725,879  $ 7.99  3.5 years $ 17,449

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- References No definition available. + Details Name: us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract Namespace Prefix: us-gaap_ Data Type: xbrli:stringItemType Balance Type: na Period Type: duration

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- Definition Tabular disclosure of share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5047-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details Name: us-gaap_DisclosureOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTextBlock Namespace Prefix: us-gaap_ Data Type: dtr-types:textBlockItemType Balance Type: na Period Type: duration

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- Definition Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details Name: us-gaap_ScheduleOfShareBasedCompensationRestrictedStockUnitsAwardActivityTableTextBlock Namespace Prefix: us-gaap_ Data Type: dtr-types:textBlockItemType Balance Type: na Period Type: duration

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- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for stock appreciation rights awards that were outstanding at the beginning and end of the year, and the number of stock appreciation rights awards that were granted, exercised or converted, forfeited, and expired during the year. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details Name: us-gaap_ScheduleOfShareBasedCompensationStockAppreciationRightsAwardActivityTableTextBlock Namespace Prefix: us-gaap_ Data Type: dtr-types:textBlockItemType Balance Type: na Period Type: duration

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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details Name: us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock Namespace Prefix: us-gaap_ Data Type: dtr-types:textBlockItemType Balance Type: na Period Type: duration

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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details Name: us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock Namespace Prefix: us-gaap_ Data Type: dtr-types:textBlockItemType Balance Type: na Period Type: duration

v3.22.2.2

Accumulated Other Comprehensive Income (Loss) (Tables)	9 Months Ended
	Oct. 01, 2022
Equity [Abstract]
Schedule of other comprehensive income (loss) [Table Text Block]	The following summarizes the components of other comprehensive income (loss) accumulated in shareholders’ equity for the three and nine months ended October 1, 2022 and October 2, 2021: Three Months Ended October 1, 2022 Foreign Currency Available for Sale Securities Defined Benefit Pension Plans Accumulated Other Comprehensive Income (Loss) Balance at July 2, 2022 $ (4,175) $ (181) $ (473) $ (4,829) Other comprehensive income (loss) before reclassifications Translation adjustment $ (1,934) $ —  $ —  $ (1,934) Unrealized losses —  (113) —  (113) Amounts reclassified from accumulated other comprehensive income (loss) —  (11) 30  19  Tax effect —  26  (8) 18  Net of tax amount (1,934) (98) 22  (2,010) Balance at October 1, 2022 $ (6,109) $ (279) $ (451) $ (6,839) Three Months Ended October 2, 2021 Foreign Currency Available-for-Sale Securities Defined Benefit Pension Plans Accumulated Other Comprehensive Income (Loss) Balance at July 3, 2021 $ (2,845) $ —  $ (735) $ (3,580) Other comprehensive income (loss) before reclassifications Translation adjustment $ (788) $ —  $ —  $ (788) Amounts reclassified from accumulated other comprehensive income (loss) —  —  51  51  Tax effect —  —  (13) (13) Net of tax amount (788) —  38  (750) Balance at October 2, 2021 $ (3,633) $ —  $ (697) $ (4,330) Nine Months Ended October 1, 2022 Foreign Currency Available-for-Sale Securities Defined Benefit Pension Plans Accumulated Other Comprehensive Income (Loss) Balance at January 1, 2022 $ (3,654) $ —  $ (519) $ (4,173) Other comprehensive income (loss) before reclassifications Translation adjustment $ (2,455) $ —  $ —  $ (2,455) Unrealized losses —  (350) —  (350) Amounts reclassified from accumulated other comprehensive income (loss) —  (3) 92  89  Tax effect —  74  (24) 50  Net of tax amount (2,455) (279) 68  (2,666) Balance at October 1, 2022 $ (6,109) $ (279) $ (451) $ (6,839) Nine Months Ended October 2, 2021 Foreign Currency Available-for-Sale Securities Defined Benefit Pension Plans Accumulated Other Comprehensive Income (Loss) Balance at January 1, 2021 $ (3,738) $ —  $ (809) $ (4,547) Other comprehensive income (loss) before reclassifications Translation adjustment $ 105  $ —  $ —  $ 105  Amounts reclassified from accumulated other comprehensive income (loss) —  —  151  151  Tax effect —  —  (39) (39) Net of tax amount 105  —  112  217  Balance at October 2, 2021 $ (3,633) $ —  $ (697) $ (4,330)

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- Definition Tabular disclosure of components of comprehensive income (loss). Includes, but is not limited to, foreign currency translation adjustments, foreign currency transactions designated as economic hedges of a net investment in foreign entity, gain (loss) and prior service cost (credit) for pension plans and other postretirement benefit plans. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=124509347&loc=d3e526-108580 + Details Name: us-gaap_ScheduleOfComprehensiveIncomeLossTableTextBlock Namespace Prefix: us-gaap_ Data Type: dtr-types:textBlockItemType Balance Type: na Period Type: duration

v3.22.2.2

Per Share Amounts and Common Shares Outstanding (Tables)	9 Months Ended
	Oct. 01, 2022
Equity [Abstract]
Schedule of earnings per share, basic and diluted [Table Text Block]	The per share amounts were computed as follows: Three Months Ended Nine Months Ended October 1, 2022 October 2, 2021 October 1, 2022 October 2, 2021 Income available to common shareholders: Net income $ 20,464  $ 24,927  $ 49,031  $ 57,897  Weighted-average shares (in thousands): Basic: Outstanding 43,920  44,885  44,194  45,257  Partially-paid share subscriptions 228  —  228  —  Basic weighted-average shares 44,148  44,885  44,422  45,257  Diluted: Basic from above 44,148  44,885  44,422  45,257  Incremental shares from assumed: Exercise of stock options and awards 2,257  3,066  2,297  2,528  Diluted weighted-average shares 46,405  47,951  46,719  47,785  Net income per share: Basic $ .46  $ .56  $ 1.10  $ 1.28  Diluted $ .44  $ .52  $ 1.05  $ 1.21
Schedule of common and redeemable shares outstanding [Table Text Block]	A summary of the activity of the common and redeemable shares outstanding for the nine months ended October 1, 2022 was as follows: Common Shares Net of Treasury Shares Redeemable Shares Total Shares outstanding at January 1, 2022 35,110,432  9,391,790  44,502,222  Shares purchased (1,646,735) (881,136) (2,527,871) Shares sold 472,110  777,725  1,249,835  Stock subscription offering -- cash purchases 152,800  —  152,800  Options and awards exercised 368,402  —  368,402  Shares outstanding at October 1, 2022 34,457,009  9,288,379  43,745,388

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- References No definition available. + Details Name: us-gaap_EquityAbstract Namespace Prefix: us-gaap_ Data Type: xbrli:stringItemType Balance Type: na Period Type: duration

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 + Details Name: us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock Namespace Prefix: us-gaap_ Data Type: dtr-types:textBlockItemType Balance Type: na Period Type: duration

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- Definition Tabular disclosure of an entity's stock, including par or stated value per share, number and dollar amount of share subscriptions, shares authorized, shares issued, shares outstanding, number and dollar amount of shares held in an employee trust, dividend per share, total dividends, share conversion features, par value plus additional paid in capital, the value of treasury stock and other information necessary to a fair presentation, and EPS information. Stock by class includes common, convertible, and preferred stocks which are not redeemable or redeemable solely at the option of the issuer. Includes preferred stock with redemption features that are solely within the control of the issuer and mandatorily redeemable stock if redemption is required to occur only upon liquidation or termination of the reporting entity. If more than one issue is outstanding, state the title of each issue and the corresponding dollar amount; dollar amount of any shares subscribed but unissued and the deduction of subscriptions receivable there from; number of shares authorized, issued, and outstanding. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=65888546&loc=d3e21300-112643 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=123467817&loc=d3e21553-112644 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=122040564&loc=d3e177068-122764 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=123467817&loc=d3e21538-112644 Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=123467817&loc=d3e21521-112644 Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 8: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=123467817&loc=d3e21488-112644 Reference 9: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770 Reference 10: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=123467817&loc=d3e21506-112644 Reference 11: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(27)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 12: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=123467817&loc=d3e21484-112644 Reference 13: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=123467817&loc=d3e21475-112644 + Details Name: us-gaap_ScheduleOfStockByClassTextBlock Namespace Prefix: us-gaap_ Data Type: dtr-types:textBlockItemType Balance Type: na Period Type: duration

v3.22.2.2

Operations by Business Segment (Tables)	9 Months Ended
	Oct. 01, 2022
Segment Reporting [Abstract]
Schedule of segment reporting information, by segment [Table Text Block]	Segment information reconciled to the condensed consolidated financial statements was as follows: Utility Residential and Commercial All Other Reconciling Adjustments Consolidated Three Months Ended October 1, 2022 Revenues $ 217,305  $ 180,706  $ 934  $ —  $ 398,945  Income (loss) from operations 16,790  21,204  (4,033) (948) (a) 33,013  Interest expense (2,164) (2,164) Interest income 303  303  Other income (expense), net (3,371) (3,371) Income before income taxes $ 27,781  Segment assets, total $ 331,393  $ 305,216  $ —  $ 263,362  (b) $ 899,971  Three Months Ended October 2, 2021 Revenues $ 204,960  $ 164,737  $ 547  $ —  $ 370,244  Income (loss) from operations 23,124  17,595  (2,701) (1,085) (a) 36,933  Interest expense (1,449) (1,449) Interest income 39  39  Other income (expense), net (2,298) (2,298) Income before income taxes $ 33,225  Segment assets, total $ 286,157  $ 278,847  $ —  $ 210,709  (b) $ 775,713  Nine Months Ended October 1, 2022 Revenues $ 637,900  $ 504,064  $ 1,584  $ —  $ 1,143,548  Income (loss) from operations 49,260  50,759  (14,852) (5,665) (a) 79,502  Interest expense (5,312) (5,312) Interest income 489  489  Other income (expense), net (8,241) (8,241) Income before income taxes $ 66,438  Segment assets, total $ 331,393  $ 305,216  $ —  $ 263,362  (b) $ 899,971  Nine Months Ended October 2, 2021 Revenues $ 557,349  $ 465,524  $ 1,668  $ —  $ 1,024,541  Income (loss) from operations 50,015  51,893  (11,367) (2,610) (a) 87,931  Interest expense (4,093) (4,093) Interest income 161  161  Other income (expense), net (5,548) (5,548) Income before income taxes $ 78,451  Segment assets, total $ 286,157  $ 278,847  $ —  $ 210,709  (b) $ 775,713  Reconciling adjustments from segment reporting to the condensed consolidated financial statements include unallocated corporate items: (a)Reclassification of depreciation expense and allocation of corporate expenses. (b)Corporate assets include cash, prepaid expenses, corporate facilities, enterprise-wide information systems and other nonoperating assets.

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- Definition Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8736-108599 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8813-108599 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8906-108599 + Details Name: us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock Namespace Prefix: us-gaap_ Data Type: dtr-types:textBlockItemType Balance Type: na Period Type: duration

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- References No definition available. + Details Name: us-gaap_SegmentReportingAbstract Namespace Prefix: us-gaap_ Data Type: xbrli:stringItemType Balance Type: na Period Type: duration

v3.22.2.2

Revenue Recognition (Tables)	9 Months Ended
	Oct. 01, 2022
Revenue Recognition [Abstract]
Disaggregation of revenue [Table Text Block]	The following tables disaggregate our revenue for the three and nine months ended October 1, 2022 and October 2, 2021 by major sources: Three Months Ended October 1, 2022 Utility Residential and Commercial All Other Consolidated Type of service: Tree and plant care $ 138,112  $ 105,108  $ (28) $ 243,192  Grounds maintenance —  46,056  —  46,056  Storm damage services 7,004  2,564  —  9,568  Consulting and other 72,189  26,978  962  100,129  Total revenues $ 217,305  $ 180,706  $ 934  $ 398,945  Geography: United States $ 207,004  $ 168,405  $ 934  $ 376,343  Canada 10,301  12,301  —  22,602  Total revenues $ 217,305  $ 180,706  $ 934  $ 398,945  Three Months Ended October 2, 2021 Utility Residential and Commercial All Other Consolidated Type of service: Tree and plant care $ 140,039  $ 96,961  $ (29) $ 236,971  Grounds maintenance —  40,452  —  40,452  Storm damage services 10,052  2,688  —  12,740  Consulting and other 54,869  24,636  576  80,081  Total revenues $ 204,960  $ 164,737  $ 547  $ 370,244  Geography: United States $ 194,140  $ 153,009  $ 547  $ 347,696  Canada 10,820  11,728  —  22,548  Total revenues $ 204,960  $ 164,737  $ 547  $ 370,244  Nine Months Ended October 1, 2022 Utility Residential and Commercial All Other Consolidated Type of service: Tree and plant care $ 420,791  $ 294,206  $ (155) $ 714,842  Grounds maintenance —  128,114  —  128,114  Storm damage services 10,136  6,162  —  16,298  Consulting and other 206,973  75,582  1,739  284,294  Total revenues $ 637,900  $ 504,064  $ 1,584  $ 1,143,548  Geography: United States $ 608,411  $ 469,042  $ 1,584  $ 1,079,037  Canada 29,489  35,022  —  64,511  Total revenues $ 637,900  $ 504,064  $ 1,584  $ 1,143,548  Nine Months Ended October 2, 2021 Utility Residential and Commercial   All Other   Consolidated Type of service:             Tree and plant care $ 393,742  $ 271,682  $ (224) $ 665,200  Grounds maintenance —  116,810  —  116,810  Storm damage services 13,997  5,486  —  19,483  Consulting and other 149,610  71,546  1,892  223,048  Total revenues $ 557,349  $ 465,524  $ 1,668  $ 1,024,541  Geography:     United States $ 525,818  $ 432,158  $ 1,668  $ 959,644  Canada 31,531  33,366  —  64,897  Total revenues $ 557,349  $ 465,524  $ 1,668  $ 1,024,541
Contract with customer, asset and liability [Table Text Block]	Net contract liabilities consisted of the following:   October 1, 2022   December 31, 2021 Contract liabilities - current $ 4,599  $ 3,888  Contract liabilities - noncurrent 1,951    1,845       Net contract liabilities $ 6,550    $ 5,733

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- Definition Tabular disclosure of receivable, contract asset, and contract liability from contract with customer. Includes, but is not limited to, change in contract asset and contract liability. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130551-203045 + Details Name: us-gaap_ContractWithCustomerAssetAndLiabilityTableTextBlock Namespace Prefix: us-gaap_ Data Type: dtr-types:textBlockItemType Balance Type: na Period Type: duration

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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130545-203045 + Details Name: us-gaap_DisaggregationOfRevenueTableTextBlock Namespace Prefix: us-gaap_ Data Type: dtr-types:textBlockItemType Balance Type: na Period Type: duration

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- References No definition available. + Details Name: us-gaap_RevenueRecognitionAbstract Namespace Prefix: us-gaap_ Data Type: xbrli:stringItemType Balance Type: na Period Type: duration

v3.22.2.2

Fair Value Measurements and Financial Instruments (Tables)	9 Months Ended
	Oct. 01, 2022
Fair Value Disclosures [Abstract]
Assets and liabilities measured at fair value on a recurring basis [Table Text Block]	Our assets and liabilities measured at fair value on a recurring basis at October 1, 2022 were as follows:     Fair Value Measurements at October 1, 2022 Using: Assets and Liabilities Recorded at Fair Value on a Recurring Basis Total Carrying Value at October 1, 2022 Quoted Prices in Active Markets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Assets: Assets invested for self-insurance Certificates of deposits, current $ 4,000  $ 4,000  $ —  $ —  Certificates of deposits, noncurrent 7,109  7,109  —  —  Available-for-sale debt securities: United States Government and agency securities 20,261  20,261  —  —  Corporate notes and bonds 257  257  —  —  Total available-for-sale debt securities 20,518  20,518  —  —  Marketable equity securities: Mutual funds 14,894  14,894  —  —  Corporate stocks 2,819  2,819  —  —  Exchange traded funds 1,133  1,133  —  —  Total marketable equity securities 18,846  18,846  —  —  Liabilities: Deferred compensation $ 4,759  $ —  $ 4,759  $ —  Our assets and liabilities measured at fair value on a recurring basis at December 31, 2021 were as follows:     Fair Value Measurements at December 31, 2021 Using: Assets and Liabilities Recorded at Fair Value on a Recurring Basis Total Carrying Value at December 31, 2021 Quoted Prices in Active Markets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Assets: Assets invested for self-insurance Certificates of deposits, current $ 4,250  $ 4,250  $ —  $ —  Certificates of deposits, noncurrent 10,609  10,609  —  —  Available-for-sale debt securities: United States Government and agency securities 3,230  3,230  —  —  Corporate notes and bonds 176  176  —  —  Total available-for-sale debt securities 3,406  3,406  —  —  Marketable equity securities: Mutual funds 7,476  7,476  —  —  Corporate stocks 1,934  1,934  —  —  Exchange traded funds 1,976  1,976  —  —  Total marketable equity securities 11,386  11,386  —  —  Liabilities: Deferred compensation $ 4,333  $ —  $ 4,333  $ —
Financial instruments recorded at historical carrying value [Table Text Block]	Financial instruments classified as noncurrent assets and liabilities and their carrying values and fair values were as follows:   October 1, 2022 December 31, 2021 Carrying Value Fair Value Carrying Value Fair Value Assets: Available-for-sale debt securities $ 20,518  $ 20,518  $ 3,406  $ 3,406  Marketable equity securities 18,846  18,846  11,386  11,386  Liabilities: Revolving credit facility, noncurrent $ 98,099  $ 98,099  $ 46,832  $ 46,832  Senior unsecured notes, noncurrent 75,000  73,396  75,000  78,432  Term loans, noncurrent 2,038  1,973  2,373  2,431  Total $ 175,137  $ 173,468  $ 124,205  $ 127,695

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- Definition Tabular disclosure of the fair value of financial instruments, including financial assets and financial liabilities, and the measurements of those instruments, assets, and liabilities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=123594938&loc=d3e13467-108611 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258 + Details Name: us-gaap_FairValueByBalanceSheetGroupingTextBlock Namespace Prefix: us-gaap_ Data Type: dtr-types:textBlockItemType Balance Type: na Period Type: duration

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- References No definition available. + Details Name: us-gaap_FairValueDisclosuresAbstract Namespace Prefix: us-gaap_ Data Type: xbrli:stringItemType Balance Type: na Period Type: duration

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- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258 + Details Name: us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock Namespace Prefix: us-gaap_ Data Type: dtr-types:textBlockItemType Balance Type: na Period Type: duration

v3.22.2.2

Investments, Debt and Equity Securities (Tables)	9 Months Ended
	Oct. 01, 2022
Investments, Debt and Equity Securities [Abstract]
Schedule of Available-for-sale Securities Reconciliation	The following table summarizes available-for-sale debt securities held at October 1, 2022 by asset type: Available-For-Sale Debt Securities Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (Net Carrying Amount) October 1, 2022 Fixed maturity: United States Government and agency securities $ 20,556  $ 6  $ (301) $ 20,261  Corporate notes and bonds 315  —  (58) 257  Total available-for-sale debt securities $ 20,871  $ 6  $ (359) $ 20,518  December 31, 2021 Fixed maturity: United States Government and agency securities $ 3,244  $ 11  $ (25) $ 3,230  Corporate notes and bonds 174  2  —  176  Total available-for-sale debt securities $ 3,418  $ 13  $ (25) $ 3,406
Investments Classified by Contractual Maturity Date	The net carrying values of available-for-sale debt securities at October 1, 2022 by contractual maturity, are shown below. Expected maturities may differ from contractual maturities because the issuers of the securities may have the right to prepay obligations without prepayment penalties. Amortized Cost Fair Value Due: Less than one year $ 12,999  $ 12,997  One year through five years 5,729  5,568  Five years through ten years 234  191  After ten years 1,909  1,762  Total $ 20,871  $ 20,518

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- Definition Tabular disclosure of maturities of an entity's investments as well as any other information pertinent to the investments. + References No definition available. + Details Name: us-gaap_InvestmentsClassifiedByContractualMaturityDateTableTextBlock Namespace Prefix: us-gaap_ Data Type: dtr-types:textBlockItemType Balance Type: na Period Type: duration

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- References No definition available. + Details Name: us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract Namespace Prefix: us-gaap_ Data Type: xbrli:stringItemType Balance Type: na Period Type: duration

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- Definition Tabular disclosure of the reconciliation of available-for-sale securities from cost basis to fair value. + References No definition available. + Details Name: us-gaap_ScheduleOfAvailableForSaleSecuritiesReconciliationTableTextBlock Namespace Prefix: us-gaap_ Data Type: dtr-types:textBlockItemType Balance Type: na Period Type: duration

v3.22.2.2

Basis of Financial Statement Preparation (Details)	9 Months Ended
	Oct. 01, 2022
Reclassification [Line Items]
Stock split, conversion ratio	2

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details Name: us-gaap_ReclassificationLineItems Namespace Prefix: us-gaap_ Data Type: xbrli:stringItemType Balance Type: na Period Type: duration

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- Definition Ratio applied to the conversion of stock split, for example but not limited to, one share converted to two or two shares converted to one. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SAB TOPIC 4.C) -URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187143-122770 + Details Name: us-gaap_StockholdersEquityNoteStockSplitConversionRatio1 Namespace Prefix: us-gaap_ Data Type: xbrli:pureItemType Balance Type: na Period Type: duration

v3.22.2.2

Accounts Receivable, Net and Supplemental Balance-Sheet Information (Details) - USD ($) $ in Thousands	Oct. 01, 2022	Dec. 31, 2021
Accounts receivable, net
Accounts receivable	$ 236,903	$ 215,336
Unbilled receivables(1)	92,732	65,957
Accounts receivable, gross	329,635	281,293
Less allowances for credit losses	3,344	3,013
Accounts receivable, net	326,291	278,280
Other current assets
Refundable income taxes	364	1,346
Prepaid expenses	41,619	30,911
Assets invested for self-insurance	4,000	4,250
Other	898	1,346
Total	46,881	37,853
Property, Plant and Equipment, Net [Abstract]
Land and Land Improvements	26,075	22,129
Buildings and leasehold improvements	75,097	63,933
Equipment	664,518	646,552
Property, Plant and Equipment, Gross	765,690	732,614
Less accumulated depreciation	502,989	504,629
Property and equipment, net	262,701	227,985
Other Assets, Noncurrent [Abstract]
Investment--cost-method affiliate	1,258	1,258
Deferred income taxes	5,032	4,937
Cloud computing arrangements	3,353	6,530
Other	4,661	4,539
Total	14,304	17,264
Accrued expenses
Employee compensation	34,727	37,828
Accrued compensated absences	11,943	11,007
Self-insured medical claims	3,088	2,891
Income tax payable	6,685	145
Customer advances, deposits	6,957	4,009
Taxes, other than income	17,876	13,789
Other	3,771	5,469
Total	85,047	75,138
Other current liabilities
Current operating lease liabilities	31,726	28,682
Current portion of long-term debt	31,090	22,809
Self-insurance accruals	42,774	48,867
Total	74,500	77,549
Other noncurrent liabilities
Non-qualified retirement plans	9,200	8,713
Other	2,981	2,870
Total	$ 12,181	$ 11,583

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- Definition Contract with customer, liability, customer deposits, current + References No definition available. + Details Name: davey_Contractwithcustomerliabilitycustomerdepositscurrent Namespace Prefix: davey_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

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- Definition Investments current fair value disclosure + References No definition available. + Details Name: davey_InvestmentsCurrentFairValueDisclosure Namespace Prefix: davey_ Data Type: xbrli:monetaryItemType Balance Type: debit Period Type: instant

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- Definition Amount, before allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=124259787&loc=d3e4428-111522 + Details Name: us-gaap_AccountsReceivableGross Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: debit Period Type: instant

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- Definition Amount, before allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=124259787&loc=d3e4428-111522 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=124259787&loc=d3e4531-111522 + Details Name: us-gaap_AccountsReceivableGrossCurrent Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: debit Period Type: instant

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- References No definition available. + Details Name: us-gaap_AccountsReceivableNetAbstract Namespace Prefix: us-gaap_ Data Type: xbrli:stringItemType Balance Type: na Period Type: duration

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- Definition Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=124259787&loc=d3e4428-111522 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(3)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=124098289&loc=d3e6676-107765 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=124259787&loc=d3e4531-111522 + Details Name: us-gaap_AccountsReceivableNetCurrent Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: debit Period Type: instant

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- Definition Carrying amount as of the balance sheet date of the unpaid sum of the known and estimated amounts payable to satisfy all currently due domestic and foreign income tax obligations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(15)(b)(1)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(15)(1)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(20)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details Name: us-gaap_AccruedIncomeTaxesCurrent Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

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- Definition Carrying value as of the balance sheet date of obligations incurred through that date and payable to insurance entities to mitigate potential loss from various risks or to satisfy a promise to provide certain coverage's to employees. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=124098289&loc=d3e6935-107765 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=124098289&loc=d3e6911-107765 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.20) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details Name: us-gaap_AccruedInsuranceCurrent Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

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- Definition Amount of expenses incurred but not yet paid classified as other, due within one year or the normal operating cycle, if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.20) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=124098289&loc=d3e6911-107765 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=124098289&loc=d3e7018-107765 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=124098289&loc=d3e6935-107765 + Details Name: us-gaap_OtherAccruedLiabilitiesCurrent Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

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- Definition Amount of current assets classified as other. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.8) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=84165509&loc=d3e56426-112766 + Details Name: us-gaap_OtherAssetsCurrent Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: debit Period Type: instant

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X

- References No definition available. + Details Name: us-gaap_OtherAssetsNoncurrentAbstract Namespace Prefix: us-gaap_ Data Type: xbrli:stringItemType Balance Type: na Period Type: duration

X

- Definition Amount of liabilities classified as other. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.15) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 + Details Name: us-gaap_OtherLiabilities Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

X

- Definition Amount of liabilities classified as other, due within one year or the normal operating cycle, if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=124098289&loc=d3e6904-107765 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=124098289&loc=d3e6911-107765 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=84165509&loc=d3e56426-112766 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.20) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details Name: us-gaap_OtherLiabilitiesCurrent Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

X

- References No definition available. + Details Name: us-gaap_OtherLiabilitiesCurrentAbstract Namespace Prefix: us-gaap_ Data Type: xbrli:stringItemType Balance Type: na Period Type: duration

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- Definition Amount of liabilities classified as other, due after one year or the normal operating cycle, if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.24) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details Name: us-gaap_OtherLiabilitiesNoncurrent Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

X

- References No definition available. + Details Name: us-gaap_OtherLiabilitiesNoncurrentAbstract Namespace Prefix: us-gaap_ Data Type: xbrli:stringItemType Balance Type: na Period Type: duration

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- Definition Amount of liability, recognized in statement of financial position, for pension, other postretirement and postemployment benefits, classified as noncurrent. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(24)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=123453770&loc=d3e1703-114919 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=123453770&loc=d3e1731-114919 + Details Name: us-gaap_PensionAndOtherPostretirementAndPostemploymentBenefitPlansLiabilitiesNoncurrent Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

X

- References No definition available. + Details Name: us-gaap_PrepaidExpenseAndOtherAssetsCurrentAbstract Namespace Prefix: us-gaap_ Data Type: xbrli:stringItemType Balance Type: na Period Type: duration

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- Definition Amount of asset related to consideration paid in advance for costs that provide economic benefits within a future period of one year or the normal operating cycle, if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=124098289&loc=d3e6787-107765 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=124098289&loc=d3e6676-107765 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 340 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6387103&loc=d3e6435-108320 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 340 -SubTopic 10 -Section 05 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=123349782&loc=d3e5879-108316 + Details Name: us-gaap_PrepaidExpenseCurrent Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: debit Period Type: instant

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- Definition Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.13) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details Name: us-gaap_PropertyPlantAndEquipmentGross Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: debit Period Type: instant

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X

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- Definition Carrying amount of accrued known and estimated losses incurred as of the balance sheet date for which no insurance coverage exists, and for which a claim has been made or is probable of being asserted, typically arising from workmen's compensation-type of incidents and personal injury to nonemployees from accidents on the entity's property that are expected to be paid within one year (or the normal operating cycle, if longer). + References No definition available. + Details Name: us-gaap_SelfInsuranceReserveCurrent Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

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v3.22.2.2

Business Combinations (Details) $ in Thousands	1 Months Ended	9 Months Ended	12 Months Ended
	Nov. 08, 2022 USD ($)	Oct. 01, 2022 USD ($)	Dec. 31, 2021 USD ($)
Payments to Acquire Businesses, Gross		$ 4,453	$ 11,725
Debt issued for purchases of businesses		1,233	2,961
Business Acquisition, Preacquisition Contingency, Amount of Settlement		100
Cash		0	292
Receivables		0	509
Operating supplies		39	1,044
Prepaid expense		0	203
Equipment		1,186	4,049
Deposits and other		265	1,574
Intangible assets		1,350	3,005
Goodwill		3,175	7,723
Liabilities assumed		$ 329	$ 3,713
Subsequent event [Member]
Investment in businesses	$ 1,450
Debt issued for purchases of businesses	470
Liabilities assumed	$ 0
Number of Businesses Acquired	1
Tradenames [Member]
Finite-Lived Intangible Asset, Useful Life		7 years
Customer lists [Member]
Finite-Lived Intangible Asset, Useful Life		7 years
Noncompete Agreements [Member]
Finite-Lived Intangible Asset, Useful Life		5 years

X

- Definition Amount paid or received to resolve the preacquisition contingency. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 340 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 2.A.6) -URI http://asc.fasb.org/extlink&oid=122040515&loc=d3e105049-122735 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=123413009&loc=d3e4845-128472 + Details Name: us-gaap_BusinessAcquisitionPreacquisitionContingencyAmountOfSettlement Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

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- Definition Fair value of acquired receivable from business combination, excluding certain loans and debt securities acquired in transfer. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=123413009&loc=d3e4845-128472 + Details Name: us-gaap_BusinessCombinationAcquiredReceivablesFairValue Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: debit Period Type: instant

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- Definition Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=116859721&loc=d3e6613-128477 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=120321790&loc=d3e6927-128479 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=116859721&loc=d3e6578-128477 + Details Name: us-gaap_BusinessCombinationConsiderationTransferred1 Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: duration

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- Definition Amount of liabilities incurred by the acquirer as part of consideration transferred in a business combination. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=116859721&loc=d3e6578-128477 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 25 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6405-128476 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b)(3) -URI http://asc.fasb.org/extlink&oid=120321790&loc=d3e6927-128479 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=116859721&loc=d3e6613-128477 + Details Name: us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: duration

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- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions, acquired at the acquisition date. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=123413009&loc=d3e4845-128472 + Details Name: us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: debit Period Type: instant

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- Definition Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer, acquired at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=123413009&loc=d3e4845-128472 + Details Name: us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: debit Period Type: instant

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- Definition Amount of tangible personal property used to produce goods and services, including, but is not limited to, tools, dies and molds, computer and office equipment, acquired at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=123413009&loc=d3e4845-128472 + Details Name: us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedEquipment Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: debit Period Type: instant

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- Definition Amount of intangible assets, excluding goodwill, acquired at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=123413009&loc=d3e4845-128472 + Details Name: us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: debit Period Type: instant

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- Definition The amount of inventory recognized as of the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=123413009&loc=d3e4845-128472 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 55 -Paragraph 37 -URI http://asc.fasb.org/extlink&oid=123455525&loc=d3e2207-128464 + Details Name: us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: debit Period Type: instant

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- Definition Amount of liabilities assumed at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=123413009&loc=d3e4845-128472 + Details Name: us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

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- Definition Amount of assets expected to be realized or consumed after one year or the normal operating cycle, if longer, acquired at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=123413009&loc=d3e4845-128472 + Details Name: us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentAssets Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: debit Period Type: instant

X

- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details Name: us-gaap_FiniteLivedIntangibleAssetUsefulLife Namespace Prefix: us-gaap_ Data Type: xbrli:durationItemType Balance Type: na Period Type: duration

X

- Definition Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267 + Details Name: us-gaap_GoodwillAcquiredDuringPeriod Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: debit Period Type: duration

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- Definition The number of businesses acquired by the entity during the period. + References No definition available. + Details Name: us-gaap_NumberOfBusinessesAcquired Namespace Prefix: us-gaap_ Data Type: xbrli:integerItemType Balance Type: na Period Type: duration

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- Definition The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=120321790&loc=d3e6927-128479 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3213-108585 + Details Name: us-gaap_PaymentsToAcquireBusinessesGross Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: duration

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v3.22.2.2

Identified Intangible Assets and Goodwill, Net (Details) - USD ($) $ in Thousands	Oct. 01, 2022	Dec. 31, 2021	Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Identified intangible assets, gross	$ 52,590	$ 50,666
Accumulated amortization	41,953	39,033
Identified intangible assets, net	10,637	11,633
Goodwill	58,999	55,980	$ 48,256
Customer lists/relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Identified intangible assets, gross	33,498	32,294
Accumulated amortization	26,222	24,090
Employment-related [Member]
Finite-Lived Intangible Assets [Line Items]
Identified intangible assets, gross	10,451	9,946
Accumulated amortization	8,754	8,301
Tradenames [Member]
Finite-Lived Intangible Assets [Line Items]
Identified intangible assets, gross	8,641	8,426
Accumulated amortization	$ 6,977	$ 6,642

X

- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details Name: us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 928 -SubTopic 340 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6473545&loc=d3e61844-108004 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details Name: us-gaap_FiniteLivedIntangibleAssetsGross Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: debit Period Type: instant

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details Name: us-gaap_FiniteLivedIntangibleAssetsLineItems Namespace Prefix: us-gaap_ Data Type: xbrli:stringItemType Balance Type: na Period Type: duration

X

- Definition Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 926 -SubTopic 20 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=120154696&loc=d3e54445-107959 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details Name: us-gaap_FiniteLivedIntangibleAssetsNet Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: debit Period Type: instant

X

- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(10)(1)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=120320667&loc=SL49117168-202975 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=84165509&loc=d3e56426-112766 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266 + Details Name: us-gaap_Goodwill Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: debit Period Type: instant

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v3.22.2.2

Identified Intangible Assets and Goodwill, Net Schedule of Goodwill (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Oct. 01, 2022	Dec. 31, 2021
Goodwill [Line Items]
Goodwill	$ 55,980	$ 48,256
Goodwill, acquisitions	3,175	7,723
Goodwill, translation and other adjustments	(156)	1
Goodwill	58,999	55,980
Remaining three months of 2022	820
Finite-Lived Intangible Asset, Expected Amortization, Year One	3,073
Finite-Lived Intangible Assets, Amortization Expense, Year Two	2,752
Finite-Lived Intangible Assets, Amortization Expense, Year Three	1,970
Finite-Lived Intangible Assets, Amortization Expense, Year Four	1,132
Finite-Lived Intangible Assets, Amortization Expense, Year Five	648
Finite-Lived Intangible Assets, Amortization Expense, after Year Five	242
Intangible assets, net	10,637	11,633
Utility
Goodwill [Line Items]
Goodwill	4,911	4,911
Goodwill, acquisitions	30	0
Goodwill, translation and other adjustments	0	0
Goodwill	4,941	4,911
Residential and commercial
Goodwill [Line Items]
Goodwill	51,069	43,345
Goodwill, acquisitions	3,145	7,723
Goodwill, translation and other adjustments	(156)	1
Goodwill	$ 54,058	$ 51,069

X

- Definition Amount of amortization for asset, excluding financial asset and goodwill, lacking physical substance with finite life expected to be recognized after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References No definition available. + Details Name: us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: debit Period Type: instant

X

- Definition Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details Name: us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: debit Period Type: instant

X

- Definition Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in remainder of current fiscal year. + References No definition available. + Details Name: us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: debit Period Type: instant

X

- Definition Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details Name: us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: debit Period Type: instant

X

- Definition Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details Name: us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: debit Period Type: instant

X

- Definition Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details Name: us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: debit Period Type: instant

X

- Definition Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details Name: us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: debit Period Type: instant

X

- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(10)(1)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=120320667&loc=SL49117168-202975 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=84165509&loc=d3e56426-112766 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266 + Details Name: us-gaap_Goodwill Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: debit Period Type: instant

X

- Definition Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267 + Details Name: us-gaap_GoodwillAcquiredDuringPeriod Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: debit Period Type: duration

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details Name: us-gaap_GoodwillLineItems Namespace Prefix: us-gaap_ Data Type: xbrli:stringItemType Balance Type: na Period Type: duration

X

- Definition Amount of increase (decrease), classified as other, of an asset representing the future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267 + Details Name: us-gaap_GoodwillOtherIncreaseDecrease Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: debit Period Type: duration

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- Definition Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph ((a)(1),(b)) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16212-109274 + Details Name: us-gaap_IntangibleAssetsNetExcludingGoodwill Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: debit Period Type: instant

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v3.22.2.2

Long-Term Debt and Commitments Related to Letters of Credit Long-Term Debt (Details) - USD ($) $ in Thousands	Oct. 01, 2022	Dec. 31, 2021
Revolving credit facility, noncurrent	$ 98,099	$ 46,832
Term loans	33,128	25,182
Long-term debt	206,227	147,014
Less debt issuance costs	558	674
Less current portion	31,090	22,809
Long-term debt, excluding current maturities	174,579	123,531
Revolving credit facility, maximum borrowing capacity	425,000
Letter of credit [Member]
Revolving credit facility, maximum borrowing capacity	150,000
Swing-line borrowings [Member]
Revolving credit facility, noncurrent	23,099	16,832
London Interbank Offered Rate (LIBOR) [Member]
Revolving credit facility, noncurrent	75,000	30,000
Unsecured debt [Member]
Senior unsecured notes	75,000	75,000
Unsecured debt additional shelf note capacity	75,000
3.99% Senior unsecured notes [Member]
Senior unsecured notes	50,000	50,000
4.00% Senior unsecured notes [Member]
Senior unsecured notes	25,000	$ 25,000
Unsecured debt additional shelf note capacity	$ 25,000

X

- Definition Unsecured debt additional shelf note capacity + References No definition available. + Details Name: davey_Unsecureddebtadditionalshelfnotecapacity Namespace Prefix: davey_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

X

- Definition Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1D -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495340-112611 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=124435984&loc=d3e28555-108399 + Details Name: us-gaap_DeferredFinanceCostsNet Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: debit Period Type: instant

X

- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 + Details Name: us-gaap_LineOfCredit Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

X

- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details Name: us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

X

- Definition Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b)(3) -URI http://asc.fasb.org/extlink&oid=123466204&loc=SL6031897-161870 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 55 -Paragraph 69C -URI http://asc.fasb.org/extlink&oid=123466577&loc=SL123495737-112612 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 Reference 4: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 55 -Paragraph 69B -URI http://asc.fasb.org/extlink&oid=123466577&loc=SL123495735-112612 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1D -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495340-112611 Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details Name: us-gaap_LongTermDebt Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

X

- Definition Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19,20) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details Name: us-gaap_LongTermDebtCurrent Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

X

- Definition Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details Name: us-gaap_LongTermDebtNoncurrent Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

X

- Definition Carrying value as of the balance sheet date of all notes and loans payable (with maturities initially due after one year or beyond the operating cycle if longer), excluding current portion. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details Name: us-gaap_LongTermNotesAndLoans Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

X

- Definition Including the current and noncurrent portions, carrying value as of the balance sheet date of uncollateralized debt obligations (with maturities initially due after one year or beyond the operating cycle if longer). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 + Details Name: us-gaap_UnsecuredDebt Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

X

- Details Name: us-gaap_CreditFacilityAxis=us-gaap_LetterOfCreditMember Namespace Prefix: Data Type: na Balance Type: Period Type:

X

- Details Name: us-gaap_DebtInstrumentAxis=davey_SwinglineborrowingsMember Namespace Prefix: Data Type: na Balance Type: Period Type:

X

- Details Name: us-gaap_DebtInstrumentAxis=us-gaap_LondonInterbankOfferedRateLIBORMember Namespace Prefix: Data Type: na Balance Type: Period Type:

X

- Details Name: us-gaap_DebtInstrumentAxis=us-gaap_UnsecuredDebtMember Namespace Prefix: Data Type: na Balance Type: Period Type:

X

- Details Name: us-gaap_DebtInstrumentAxis=davey_A3.99SeniorunsecurednotesMember Namespace Prefix: Data Type: na Balance Type: Period Type:

X

- Details Name: us-gaap_DebtInstrumentAxis=davey_A4.00SeniorunsecurednotesMember Namespace Prefix: Data Type: na Balance Type: Period Type:

v3.22.2.2

Long-Term Debt and Commitments Related to Letters of Credit (Narrative) (Details) $ in Thousands	9 Months Ended
	Oct. 01, 2022 USD ($)	Dec. 31, 2021 USD ($)
Debt Instrument [Line Items]
Revolving credit facility, current borrowing capacity	$ 325,000
Revolving credit facility, maximum borrowing capacity	425,000
Unused commitments under credit facility	224,201
Revolving credit facility borrowings	$ 98,099	$ 46,832
Number of principal payments	5
Long-term debt, maturities, repayments of principal in next twelve months	$ 9,885
Long-Term Debt, Maturity, Year One	21,635
Long-term debt, maturities, repayments of principal in year two	16,196
Long-term debt, maturities, repayments of principal in year three	15,411
Long-term debt, maturities, repayments of principal in year four	113,100
Long-term debt, maturities, repayments of principal in year five	15,000
Long-term debt, maturities, repayments of principal after year five	$ 15,000
Anniversary when principal payments begin	6
Line of Credit Facility, Remaining Borrowing Capacity	$ 8,971
Minimum [Member]
Debt Instrument [Line Items]
Line of credit facility, unused capacity, commitment fee percentage	0.10%
Minimum [Member] | London Interbank Offered Rate (LIBOR) [Member] | Line of credit [Member]
Debt Instrument [Line Items]
Outstanding borrowings interest rate margin adjustment, range	0.75%
Maximum [Member]
Debt Instrument [Line Items]
Line of credit facility, unused capacity, commitment fee percentage	0.225%
Maximum [Member] | London Interbank Offered Rate (LIBOR) [Member] | Line of credit [Member]
Debt Instrument [Line Items]
Outstanding borrowings interest rate margin adjustment, range	1.50%
Swing-line borrowings [Member]
Debt Instrument [Line Items]
Revolving credit facility, current borrowing capacity	$ 30,000
Revolving credit facility borrowings	$ 23,099	16,832
Revolving credit facility [Member] | Minimum [Member]
Debt Instrument [Line Items]
Interest coverage ratio	3.00
Revolving credit facility [Member] | Maximum [Member]
Debt Instrument [Line Items]
Ratio of Indebtedness to Net Capital	3.00
3.99% Senior unsecured notes [Member]
Debt Instrument [Line Items]
Interest rate	3.99%
Debt Instrument, Face Amount	$ 50,000
Senior unsecured notes	$ 50,000	50,000
4.00% Senior unsecured notes [Member]
Debt Instrument [Line Items]
Interest rate	4.00%
Unsecured debt additional shelf note capacity	$ 25,000
Senior unsecured notes	25,000	25,000
Unsecured debt [Member]
Debt Instrument [Line Items]
Unsecured debt additional shelf note capacity	75,000
Debt Instrument, Face Amount	75,000
Senior unsecured notes	75,000	75,000
Unsecured debt, current borrowing capacity	$ 150,000
Accounts receivable securitization [Member]
Debt Instrument [Line Items]
Interest rate	0.90%
Unused commitment fee threshold percent	0.50
Debt instrument variable rate base rate calculation, default rate	2.00%
Accounts receivable securitization [Member] | Base Rate, Federal Funds [Member]
Debt Instrument [Line Items]
Outstanding borrowings interest rate margin adjustment, range	0.50%
Accounts receivable securitization [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate
Debt Instrument [Line Items]
Outstanding borrowings interest rate margin adjustment, range	0.10%
Outstanding borrowings, interest rate adjustment (Decrease)	1.00%
Line of credit [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Remaining Borrowing Capacity	$ 100,799
Line of credit [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Outstanding borrowings interest rate margin adjustment, range	1.50%
Line of credit [Member] | Base Rate, Federal Funds [Member]
Debt Instrument [Line Items]
Outstanding borrowings interest rate margin adjustment, range	0.50%
Line of credit [Member] | Minimum [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Outstanding borrowings interest rate margin adjustment, range	0.875%
Line of credit [Member] | Maximum [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Outstanding borrowings interest rate margin adjustment, range	1.50%
Letter of credit [Member]
Debt Instrument [Line Items]
Letters of credit issued	$ 94,509	88,362
Letter of credit [Member] | Revolving credit facility [Member]
Debt Instrument [Line Items]
Letters of credit issued	2,700	2,877
Letter of credit [Member] | Accounts receivable securitization [Member]
Debt Instrument [Line Items]
Revolving credit facility, maximum borrowing capacity	100,000	100,000
Letters of credit issued	$ 89,689	83,355
Debt instrument, term	1 year
Letter of credit [Member] | Accounts receivable securitization [Member] | Minimum [Member]
Debt Instrument [Line Items]
Line of credit facility, unused capacity, commitment fee percentage	0.35%
Letter of credit [Member] | Accounts receivable securitization [Member] | Maximum [Member]
Debt Instrument [Line Items]
Line of credit facility, unused capacity, commitment fee percentage	0.45%
Letter of credit [Member] | Line of credit [Member]
Debt Instrument [Line Items]
Letters of credit issued	$ 2,120	$ 2,130
Letter of credit [Member]
Debt Instrument [Line Items]
Revolving credit facility, maximum borrowing capacity	150,000
Line of credit [Member]
Debt Instrument [Line Items]
Revolving credit facility, current borrowing capacity	$ 11,091

X

- Definition Anniversary when principal payments begin + References No definition available. + Details Name: davey_AnniversaryWhenPrincipalPaymentsBegin Namespace Prefix: davey_ Data Type: xbrli:integerItemType Balance Type: na Period Type: instant

X

- Definition debt instrument variable rate base rate calculation, default rate + References No definition available. + Details Name: davey_Debtinstrumentvariableratebaseratecalculationdefaultrate Namespace Prefix: davey_ Data Type: dtr-types:percentItemType Balance Type: na Period Type: duration

X

- Definition Interest coverage ratio + References No definition available. + Details Name: davey_Interestcoverageratio Namespace Prefix: davey_ Data Type: xbrli:pureItemType Balance Type: na Period Type: instant

X

- Definition Number of principal payments + References No definition available. + Details Name: davey_NumberOfPrincipalPayments Namespace Prefix: davey_ Data Type: xbrli:integerItemType Balance Type: na Period Type: instant

X

- Definition Unsecured debt, current borrowing capacity + References No definition available. + Details Name: davey_UnsecuredDebtCurrentBorrowingCapacity Namespace Prefix: davey_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

X

- Definition Unsecured debt additional shelf note capacity + References No definition available. + Details Name: davey_Unsecureddebtadditionalshelfnotecapacity Namespace Prefix: davey_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

X

- Definition Unused commitment fee threshold percent + References No definition available. + Details Name: davey_Unusedcommitmentfeethresholdpercent Namespace Prefix: davey_ Data Type: xbrli:pureItemType Balance Type: na Period Type: duration

X

- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details Name: us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 Namespace Prefix: us-gaap_ Data Type: dtr-types:percentItemType Balance Type: na Period Type: duration

X

- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1B -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=124435984&loc=d3e28551-108399 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=124429444&loc=SL124452920-239629 Reference 5: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 55 -Paragraph 69C -URI http://asc.fasb.org/extlink&oid=123466577&loc=SL123495737-112612 Reference 6: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 55 -Paragraph 69B -URI http://asc.fasb.org/extlink&oid=123466577&loc=SL123495735-112612 + Details Name: us-gaap_DebtInstrumentFaceAmount Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

X

- Definition Incremental percentage increase (decrease) in the stated rate on a debt instrument. + References No definition available. + Details Name: us-gaap_DebtInstrumentInterestRateIncreaseDecrease Namespace Prefix: us-gaap_ Data Type: dtr-types:percentItemType Balance Type: na Period Type: duration

X

- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1B -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details Name: us-gaap_DebtInstrumentInterestRateStatedPercentage Namespace Prefix: us-gaap_ Data Type: dtr-types:percentItemType Balance Type: na Period Type: instant

X

- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details Name: us-gaap_DebtInstrumentLineItems Namespace Prefix: us-gaap_ Data Type: xbrli:stringItemType Balance Type: na Period Type: duration

X

- Definition Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details Name: us-gaap_DebtInstrumentTerm Namespace Prefix: us-gaap_ Data Type: xbrli:durationItemType Balance Type: na Period Type: duration

X

- Definition Amount of unused borrowing capacity under the long-term financing arrangement that is available to the entity as of the balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(b)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details Name: us-gaap_DebtInstrumentUnusedBorrowingCapacityAmount Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

X

- Definition The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. + References No definition available. + Details Name: us-gaap_LettersOfCreditOutstandingAmount Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

X

- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 + Details Name: us-gaap_LineOfCredit Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

X

- Definition Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details Name: us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

X

- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details Name: us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

X

- Definition Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details Name: us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

X

- Definition The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility. + References No definition available. + Details Name: us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage Namespace Prefix: us-gaap_ Data Type: dtr-types:percentItemType Balance Type: na Period Type: duration

X

- Definition Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=123465755&loc=d3e1835-112601 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1E -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495348-112611 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-04(a)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24072-122690 + Details Name: us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

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- Definition Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1E -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495348-112611 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=123465755&loc=d3e1835-112601 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-04(a)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24072-122690 + Details Name: us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

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- Definition Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1E -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495348-112611 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=123465755&loc=d3e1835-112601 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-04(a)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24072-122690 + Details Name: us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

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- Definition Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1E -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495348-112611 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-04(a)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24072-122690 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=123465755&loc=d3e1835-112601 + Details Name: us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

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- Definition Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1E -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495348-112611 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-04(a)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24072-122690 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=123465755&loc=d3e1835-112601 + Details Name: us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

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- Definition Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in remainder of current fiscal year. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-04(a)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24072-122690 + Details Name: us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

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v3.22.2.2

Leases Assets and liabilities (Details) - USD ($) $ in Thousands	Oct. 01, 2022	Dec. 31, 2021
Assets and Liabilities, Lessee [Abstract]
Operating lease assets	$ 95,350	$ 86,423
Finance lease assets	13,268	11,592
Total lease assets	108,618	98,015
Current operating lease liabilities	31,726	28,682
Non-current operating lease liabilities	62,586	57,335
Total operating lease liabilities	94,312	86,017
Current portion of finance lease liabilities	2,998	2,459
Non-current finance lease liabilities	9,704	8,646
Total finance lease liabilities	12,702	11,105
Total lease liabilities	$ 107,014	$ 97,122

X

- Definition Lease liability, operating and finance + References No definition available. + Details Name: davey_Leaseliabilityoperatingandfinance Namespace Prefix: davey_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

X

- Definition Right of use assets + References No definition available. + Details Name: davey_Rightofuseassets Namespace Prefix: davey_ Data Type: xbrli:monetaryItemType Balance Type: debit Period Type: instant

X

- References No definition available. + Details Name: us-gaap_AssetsAndLiabilitiesLesseeAbstract Namespace Prefix: us-gaap_ Data Type: xbrli:stringItemType Balance Type: na Period Type: duration

X

- Definition Present value of lessee's discounted obligation for lease payments from finance lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918701-209980 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123391704&loc=SL77918627-209977 + Details Name: us-gaap_FinanceLeaseLiability Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

X

- Definition Present value of lessee's discounted obligation for lease payments from finance lease, classified as current. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123391704&loc=SL77918627-209977 + Details Name: us-gaap_FinanceLeaseLiabilityCurrent Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

X

- Definition Present value of lessee's discounted obligation for lease payments from finance lease, classified as noncurrent. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123391704&loc=SL77918627-209977 + Details Name: us-gaap_FinanceLeaseLiabilityNoncurrent Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

X

- Definition Amount, after accumulated amortization, of right-of-use asset from finance lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123391704&loc=SL77918627-209977 + Details Name: us-gaap_FinanceLeaseRightOfUseAsset Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: debit Period Type: instant

X

- Definition Present value of lessee's discounted obligation for lease payments from operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123391704&loc=SL77918627-209977 + Details Name: us-gaap_OperatingLeaseLiability Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

X

- Definition Present value of lessee's discounted obligation for lease payments from operating lease, classified as current. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123391704&loc=SL77918627-209977 + Details Name: us-gaap_OperatingLeaseLiabilityCurrent Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

X

- Definition Present value of lessee's discounted obligation for lease payments from operating lease, classified as noncurrent. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123391704&loc=SL77918627-209977 + Details Name: us-gaap_OperatingLeaseLiabilityNoncurrent Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

X

- Definition Amount of lessee's right to use underlying asset under operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123391704&loc=SL77918627-209977 + Details Name: us-gaap_OperatingLeaseRightOfUseAsset Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: debit Period Type: instant

v3.22.2.2

Leases (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 01, 2022	Oct. 02, 2021	Oct. 01, 2022	Oct. 02, 2021
Income and expenses, lessee [Line Items]
Finance lease cost, amortization of right-of-use asset	$ 889	$ 752	$ 2,334	$ 1,985
Finance lease cost, interest expense on lease liabilities	74	52	196	134
Total lease cost	12,375	10,057	35,731	27,649
Operating expense [Member]
Income and expenses, lessee [Line Items]
Operating lease cost	6,649	4,965	19,095	13,065
Other lease cost	1,271	999	3,613	2,839
Selling expense [Member]
Income and expenses, lessee [Line Items]
Operating lease cost	2,926	2,631	8,492	7,718
Other lease cost	235	360	1,059	1,013
General and administrative expense [Member]
Income and expenses, lessee [Line Items]
Operating lease cost	304	290	883	867
Other lease cost	$ 27	$ 8	$ 59	$ 28

X

- Definition [Line Items] for Income and expenses, lessee [Table] + References No definition available. + Details Name: davey_IncomeandexpenseslesseeLineItems Namespace Prefix: davey_ Data Type: xbrli:stringItemType Balance Type: na Period Type: duration

X

- Definition Amount of interest expense on finance lease liability. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918686-209980 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123391704&loc=SL77918638-209977 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 55 -Paragraph 53 -URI http://asc.fasb.org/extlink&oid=123414884&loc=SL77918982-209971 + Details Name: us-gaap_FinanceLeaseInterestExpense Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: debit Period Type: duration

X

- Definition Amount of amortization expense attributable to right-of-use asset from finance lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918686-209980 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123391704&loc=SL77918638-209977 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 55 -Paragraph 53 -URI http://asc.fasb.org/extlink&oid=123414884&loc=SL77918982-209971 + Details Name: us-gaap_FinanceLeaseRightOfUseAssetAmortization Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: debit Period Type: duration

X

- Definition Amount of lease cost recognized by lessee for lease contract. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918686-209980 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 55 -Paragraph 53 -URI http://asc.fasb.org/extlink&oid=123414884&loc=SL77918982-209971 + Details Name: us-gaap_LeaseCost Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: debit Period Type: duration

X

- Definition Amount of operating lease expense. Excludes sublease income. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123391704&loc=SL77918638-209977 + Details Name: us-gaap_OperatingLeaseExpense Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: debit Period Type: duration

X

- Definition Amount of variable lease cost, excluded from lease liability, recognized when obligation for payment is incurred for finance and operating leases. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918686-209980 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 55 -Paragraph 53 -URI http://asc.fasb.org/extlink&oid=123414884&loc=SL77918982-209971 + Details Name: us-gaap_VariableLeaseCost Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: debit Period Type: duration

X

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X

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v3.22.2.2

Leases Remaining lease term (Details)	Oct. 01, 2022
Leases [Abstract]
Operating leases, weighted average remaining lease term	3 years 8 months 12 days
Finance lease, weighted average remaining lease term	4 years 8 months 12 days

X

- Definition Weighted average remaining lease term for finance lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (g)(3) -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918686-209980 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 55 -Paragraph 53 -URI http://asc.fasb.org/extlink&oid=123414884&loc=SL77918982-209971 + Details Name: us-gaap_FinanceLeaseWeightedAverageRemainingLeaseTerm1 Namespace Prefix: us-gaap_ Data Type: xbrli:durationItemType Balance Type: na Period Type: instant

X

- References No definition available. + Details Name: us-gaap_LeasesAbstract Namespace Prefix: us-gaap_ Data Type: xbrli:stringItemType Balance Type: na Period Type: duration

X

- Definition Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 55 -Paragraph 53 -URI http://asc.fasb.org/extlink&oid=123414884&loc=SL77918982-209971 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (g)(3) -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918686-209980 + Details Name: us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1 Namespace Prefix: us-gaap_ Data Type: xbrli:durationItemType Balance Type: na Period Type: instant

v3.22.2.2

Leases Leases weighted average discount rate (Details)	Oct. 01, 2022
Leases [Abstract]
Operating lease, weighted average discount rate, percent	2.90%
Finance lease, weighted average discount rate, percent	2.72%

X

- Definition Weighted average discount rate for finance lease calculated at point in time. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (g)(4) -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918686-209980 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 55 -Paragraph 53 -URI http://asc.fasb.org/extlink&oid=123414884&loc=SL77918982-209971 + Details Name: us-gaap_FinanceLeaseWeightedAverageDiscountRatePercent Namespace Prefix: us-gaap_ Data Type: dtr-types:percentItemType Balance Type: na Period Type: instant

X

- References No definition available. + Details Name: us-gaap_LeasesAbstract Namespace Prefix: us-gaap_ Data Type: xbrli:stringItemType Balance Type: na Period Type: duration

X

- Definition Weighted average discount rate for operating lease calculated at point in time. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (g)(4) -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918686-209980 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 55 -Paragraph 53 -URI http://asc.fasb.org/extlink&oid=123414884&loc=SL77918982-209971 + Details Name: us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent Namespace Prefix: us-gaap_ Data Type: dtr-types:percentItemType Balance Type: na Period Type: instant

v3.22.2.2

Leases Supplemental cash flow information realted to leases (Details) - USD ($) $ in Thousands	9 Months Ended
	Oct. 01, 2022	Oct. 02, 2021
Cash Flow, Operating Activities, Lessee [Abstract]
Operating cash flows from operating leases	$ (29,194)	$ (21,822)
Operating cash flows from finance leases	(196)	(134)
Cash Flow, Financing Activities, Lessee [Abstract]
Financing cash flows from finance leases	(2,313)	(2,688)
Lease, Cost [Abstract]
Right-of-use asset obtained in exchange for lease obligations, operating leases	38,403	47,069
Right-of-use asset obtained in exchange for lease obligations, finance leases	$ 3,910	$ 4,174

X

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X

- References No definition available. + Details Name: us-gaap_CashFlowOperatingActivitiesLesseeAbstract Namespace Prefix: us-gaap_ Data Type: xbrli:stringItemType Balance Type: na Period Type: duration

X

- Definition Amount of interest paid on finance lease liability. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (g)(1) -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918686-209980 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 5 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123391704&loc=SL77918643-209977 + Details Name: us-gaap_FinanceLeaseInterestPaymentOnLiability Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: duration

X

- Definition Amount of cash outflow for principal payment on finance lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 5 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123391704&loc=SL77918643-209977 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (g)(1) -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918686-209980 + Details Name: us-gaap_FinanceLeasePrincipalPayments Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: duration

X

- References No definition available. + Details Name: us-gaap_LeaseCostAbstract Namespace Prefix: us-gaap_ Data Type: xbrli:stringItemType Balance Type: na Period Type: duration

X

- Definition Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 5 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=123391704&loc=SL77918643-209977 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (g)(1) -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918686-209980 + Details Name: us-gaap_OperatingLeasePayments Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: duration

X

- Definition Amount of increase in right-of-use asset obtained in exchange for finance lease liability. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 55 -Paragraph 53 -URI http://asc.fasb.org/extlink&oid=123414884&loc=SL77918982-209971 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (g)(2) -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918686-209980 + Details Name: us-gaap_RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: debit Period Type: duration

X

- Definition Amount of increase in right-of-use asset obtained in exchange for operating lease liability. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 55 -Paragraph 53 -URI http://asc.fasb.org/extlink&oid=123414884&loc=SL77918982-209971 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (g)(2) -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918686-209980 + Details Name: us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: debit Period Type: duration

v3.22.2.2

Leases Maturity (Details) - USD ($) $ in Thousands	Oct. 01, 2022	Dec. 31, 2021
Lessee, Operating Lease, Liability, Payments, Due Next Twelve Months
Remaining three months of 2022	$ 9,301
2023	31,878
2024	24,610
2025	16,964
2026	9,277
2027	3,343
Thereafter	4,061
Total lease payments	99,434
Less interest	5,122
Total	94,312	$ 86,017
Finance Lease, Liability, Payments, Due Next Twelve Months
Remaining three months of 2022	747
2023	3,237
2024	3,106
2025	2,472
2026	2,101
2027	1,123
Thereafter	732
Total lease payments	13,518
Less interest	816
Total	$ 12,702	$ 11,105

X

- References No definition available. + Details Name: us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract Namespace Prefix: us-gaap_ Data Type: xbrli:stringItemType Balance Type: na Period Type: duration

X

- Definition Present value of lessee's discounted obligation for lease payments from finance lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918701-209980 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123391704&loc=SL77918627-209977 + Details Name: us-gaap_FinanceLeaseLiability Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

X

- Definition Amount of lessee's undiscounted obligation for lease payments for finance lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918701-209980 + Details Name: us-gaap_FinanceLeaseLiabilityPaymentsDue Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

X

- Definition Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918701-209980 + Details Name: us-gaap_FinanceLeaseLiabilityPaymentsDueAfterYearFive Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

X

- Definition Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918701-209980 + Details Name: us-gaap_FinanceLeaseLiabilityPaymentsDueNextTwelveMonths Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

X

- Definition Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918701-209980 + Details Name: us-gaap_FinanceLeaseLiabilityPaymentsDueYearFive Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

X

- Definition Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918701-209980 + Details Name: us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

X

- Definition Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918701-209980 + Details Name: us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

X

- Definition Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918701-209980 + Details Name: us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

X

- Definition Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in remainder of current fiscal year. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918701-209980 + Details Name: us-gaap_FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

X

- Definition Amount of lessee's undiscounted obligation for lease payments in excess of discounted obligation for lease payments for finance lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918701-209980 + Details Name: us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

X

- Definition Amount of lessee's undiscounted obligation for lease payment for operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918701-209980 + Details Name: us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

X

- Definition Amount of lessee's undiscounted obligation for lease payment for operating lease due after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918701-209980 + Details Name: us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

X

- Definition Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918701-209980 + Details Name: us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

X

- Definition Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918701-209980 + Details Name: us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

X

- Definition Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918701-209980 + Details Name: us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

X

- Definition Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918701-209980 + Details Name: us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

X

- Definition Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918701-209980 + Details Name: us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

X

- Definition Amount of lessee's undiscounted obligation for lease payment for operating lease having initial or remaining lease term in excess of one year to be paid in remainder of current fiscal year. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918701-209980 + Details Name: us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

X

- Definition Amount of lessee's undiscounted obligation for lease payments in excess of discounted obligation for lease payments for operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918701-209980 + Details Name: us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

X

- References No definition available. + Details Name: us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract Namespace Prefix: us-gaap_ Data Type: xbrli:stringItemType Balance Type: na Period Type: duration

X

- Definition Present value of lessee's discounted obligation for lease payments from operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123391704&loc=SL77918627-209977 + Details Name: us-gaap_OperatingLeaseLiability Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

v3.22.2.2

Stock-Based Compensation (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 01, 2022	Oct. 02, 2021	Oct. 01, 2022	Oct. 02, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, percentage of outstanding stock maximum			5.00%
Share-based compensation arrangement by share-based payment award, percentage of outstanding and available for grant, maximum			10.00%
Compensation expense, share-based payment plans	$ 1,658	$ 1,167	$ 5,244	$ 3,432
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract]
Volatility rate			9.70%	9.90%
Risk-free interest rate			1.70%	0.30%
Expected dividend yield			0.40%	0.40%
Expected life of awards (years)			3 years	3 years
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Exercisable, ending balance	1,725,879		1,725,879
Stock option plans [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense, share-based payment plans			$ 289	$ 343
Stock options awarded, term (years)			10 years
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding, beginning balance			2,350,934
Granted			0
Exercised			(219,143)
Forfeited			(17,820)
Outstanding, ending balance	2,113,971		2,113,971
Exercisable, ending balance	1,725,879		1,725,879
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Outstanding, weighted average exercise price, beginning balance			$ 8.56
Granted, weighted average exercise price			0
Exercised, weighted average exercise price			8.29
Forfeited, weighted average exercise price			8.01
Outstanding, weighted average exercise price, ending balance	$ 8.59		8.59
Exercisable, weighted average exercise price, ending balance	$ 7.99		$ 7.99
Outstanding, weighted average remaining contractual life (years)			4 years 2 months 12 days
Exercisable, weighted average remaining contractual life (years)			3 years 6 months
Outstanding, aggregate intrinsic value	$ 20,104		$ 20,104
Exercisable, aggregate intrinsic value	17,449		17,449
Outstanding, unrecognized compensation cost	$ 489		$ 489
Employee service share-based compensation, nonvested awards, total compensation cost not yet recognized, period for recognition			9 months 18 days
Stock-settled stock appreciation rights (SSARs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense, share-based payment plans			$ 65	120
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward]
Unvested, beginning balance			87,534
Granted			0
Forfeited			0
Vested			(43,752)
Unvested, ending balance	43,782		43,782
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract]
Unvested, weighted average award date value, beginning balance			$ 1.92
Granted, weighted average award date value			0
Forfeited, weighted average award date value			0
Vested, weighted average award date value			1.92
Unvested, weighted average award date value, ending balance	$ 1.92		$ 1.92
Weighted average remaining contractual life (years)			3 months 18 days
Unrecognized compensation cost	$ 19		$ 19
Aggregate intrinsic value	$ 792		792
Restricted stock units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense, share-based payment plans			$ 3,510	1,782
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward]
Unvested, beginning balance			740,160
Granted			351,357
Forfeited			(1,000)
Vested			(181,176)
Unvested, ending balance	909,341		909,341
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract]
Unvested, weighted average award date value, beginning balance			$ 12.49
Granted, weighted average award date value			17.89
Forfeited, weighted average award date value			17.89
Vested, weighted average award date value			11.04
Unvested, weighted average award date value, ending balance	$ 14.86		$ 14.86
Weighted average remaining contractual life (years)			2 years
Unrecognized compensation cost	$ 8,315		$ 8,315
Aggregate intrinsic value	$ 13,517		$ 13,517
Employee PRSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward]
Granted			336,664
Unvested, ending balance	851,640		851,640
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract]
Unvested, weighted average award date value, ending balance	$ 14.89		$ 14.89
Weighted average remaining contractual life (years)			2 years
Unrecognized compensation cost	$ 7,863		$ 7,863
Aggregate intrinsic value	$ 12,685		$ 12,685
Nonemployee Director RSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward]
Granted			14,693
Unvested, ending balance	57,701		57,701
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract]
Unvested, weighted average award date value, ending balance	$ 14.42		$ 14.42
Weighted average remaining contractual life (years)			2 years 2 months 12 days
Unrecognized compensation cost	$ 452		$ 452
Aggregate intrinsic value	$ 832		832
The Davey Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense, share-based payment plans			$ 1,380	$ 1,187
Employee stock purchase plan, service period			1 year
Employee stock purchase plan, percentage of market price, purchase date			85.00%
Employee stock purchase plan, discount from market price, purchase date			15.00%

X

- Definition Share-based compensation arrangement by share-based payment award, percentage of outstanding and available for grant, maximum + References No definition available. + Details Name: davey_Sharebasedcompensationarrangementbysharebasedpaymentawardpercentageofoutstandingandavailableforgrantmaximum Namespace Prefix: davey_ Data Type: dtr-types:percentItemType Balance Type: na Period Type: duration

X

- Definition Amount of expense for award under share-based payment arrangement. Excludes amount capitalized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5047-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=122041274&loc=d3e301413-122809 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details Name: us-gaap_AllocatedShareBasedCompensationExpense Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: debit Period Type: duration

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- Definition Amount of cost not yet recognized for nonvested award under share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details Name: us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: debit Period Type: instant

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- Definition Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details Name: us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1 Namespace Prefix: us-gaap_ Data Type: xbrli:durationItemType Balance Type: na Period Type: duration

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- Definition Amount of cost to be recognized for option under share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details Name: us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: debit Period Type: instant

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- Definition Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details Name: us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardRequisiteServicePeriod1 Namespace Prefix: us-gaap_ Data Type: xbrli:durationItemType Balance Type: na Period Type: duration

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- Definition Discount rate from fair value on purchase date that participants pay for shares. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details Name: us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardDiscountFromMarketPricePurchaseDate Namespace Prefix: us-gaap_ Data Type: dtr-types:percentItemType Balance Type: na Period Type: duration

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- References No definition available. + Details Name: us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdditionalDisclosuresAbstract Namespace Prefix: us-gaap_ Data Type: xbrli:stringItemType Balance Type: na Period Type: duration

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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(3) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details Name: us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod Namespace Prefix: us-gaap_ Data Type: xbrli:sharesItemType Balance Type: na Period Type: duration

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- Definition Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(3) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details Name: us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue Namespace Prefix: us-gaap_ Data Type: dtr-types:perShareItemType Balance Type: na Period Type: duration

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- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details Name: us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod Namespace Prefix: us-gaap_ Data Type: xbrli:sharesItemType Balance Type: na Period Type: duration

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- Definition The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details Name: us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue Namespace Prefix: us-gaap_ Data Type: dtr-types:perShareItemType Balance Type: na Period Type: duration

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- Definition The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details Name: us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber Namespace Prefix: us-gaap_ Data Type: xbrli:sharesItemType Balance Type: na Period Type: instant

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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details Name: us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward Namespace Prefix: us-gaap_ Data Type: xbrli:stringItemType Balance Type: na Period Type: duration

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- Definition Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details Name: us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue Namespace Prefix: us-gaap_ Data Type: dtr-types:perShareItemType Balance Type: na Period Type: instant

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- Definition Weighted average remaining contractual term for equity-based awards excluding options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details Name: us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageRemainingContractualTerms Namespace Prefix: us-gaap_ Data Type: xbrli:durationItemType Balance Type: na Period Type: duration

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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(2) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details Name: us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod Namespace Prefix: us-gaap_ Data Type: xbrli:sharesItemType Balance Type: na Period Type: duration

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- Definition The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(2) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details Name: us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue Namespace Prefix: us-gaap_ Data Type: dtr-types:perShareItemType Balance Type: na Period Type: duration

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- Definition The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(iii) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details Name: us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate Namespace Prefix: us-gaap_ Data Type: dtr-types:percentItemType Balance Type: na Period Type: duration

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- Definition The risk-free interest rate assumption that is used in valuing an option on its own shares. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(iv) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details Name: us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate Namespace Prefix: us-gaap_ Data Type: dtr-types:percentItemType Balance Type: na Period Type: duration

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- Definition Rate of weighted-average expected volatility for award under share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(ii) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details Name: us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageVolatilityRate Namespace Prefix: us-gaap_ Data Type: dtr-types:percentItemType Balance Type: na Period Type: duration

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details Name: us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems Namespace Prefix: us-gaap_ Data Type: xbrli:stringItemType Balance Type: na Period Type: duration

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- References No definition available. + Details Name: us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract Namespace Prefix: us-gaap_ Data Type: xbrli:stringItemType Balance Type: na Period Type: duration

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- Definition The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details Name: us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber Namespace Prefix: us-gaap_ Data Type: xbrli:sharesItemType Balance Type: na Period Type: instant

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- Definition The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details Name: us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice Namespace Prefix: us-gaap_ Data Type: dtr-types:perShareItemType Balance Type: na Period Type: instant

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- Definition The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(3) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details Name: us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod Namespace Prefix: us-gaap_ Data Type: xbrli:sharesItemType Balance Type: na Period Type: duration

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- Definition Net number of share options (or share units) granted during the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details Name: us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod Namespace Prefix: us-gaap_ Data Type: xbrli:sharesItemType Balance Type: na Period Type: duration

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- Definition Number of options outstanding, including both vested and non-vested options. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details Name: us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber Namespace Prefix: us-gaap_ Data Type: xbrli:sharesItemType Balance Type: na Period Type: instant

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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details Name: us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward Namespace Prefix: us-gaap_ Data Type: xbrli:stringItemType Balance Type: na Period Type: duration

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- Definition Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details Name: us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice Namespace Prefix: us-gaap_ Data Type: dtr-types:perShareItemType Balance Type: na Period Type: instant

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- Definition Amount by which current fair value of underlying stock exceeds exercise price of fully vested and expected to vest exercisable or convertible options. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e)(2) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details Name: us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableAggregateIntrinsicValue Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: debit Period Type: instant

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- Definition Amount by which current fair value of underlying stock exceeds exercise price of fully vested and expected to vest options outstanding. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details Name: us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: debit Period Type: instant

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- Definition Maximum number of shares that may be issued in accordance with the plan as a proportion of outstanding capital stock. + References No definition available. + Details Name: us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPercentageOfOutstandingStockMaximum Namespace Prefix: us-gaap_ Data Type: dtr-types:percentItemType Balance Type: na Period Type: duration

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- Definition Weighted average price at which option holders acquired shares when converting their stock options into shares. + References No definition available. + Details Name: us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice Namespace Prefix: us-gaap_ Data Type: dtr-types:perShareItemType Balance Type: na Period Type: duration

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- Definition Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated. + References No definition available. + Details Name: us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice Namespace Prefix: us-gaap_ Data Type: dtr-types:perShareItemType Balance Type: na Period Type: duration

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- Definition Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options. + References No definition available. + Details Name: us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice Namespace Prefix: us-gaap_ Data Type: dtr-types:perShareItemType Balance Type: na Period Type: duration

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- Definition Intrinsic value of nonvested award under share-based payment arrangement. Excludes share and unit options. + References No definition available. + Details Name: us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueNonvested Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: debit Period Type: instant

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- Definition Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details Name: us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod Namespace Prefix: us-gaap_ Data Type: xbrli:durationItemType Balance Type: na Period Type: duration

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- Definition Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(i) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.D.2) -URI http://asc.fasb.org/extlink&oid=122041274&loc=d3e301413-122809 + Details Name: us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1 Namespace Prefix: us-gaap_ Data Type: xbrli:durationItemType Balance Type: na Period Type: duration

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- Definition Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details Name: us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1 Namespace Prefix: us-gaap_ Data Type: xbrli:durationItemType Balance Type: na Period Type: duration

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- Definition Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details Name: us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2 Namespace Prefix: us-gaap_ Data Type: xbrli:durationItemType Balance Type: na Period Type: duration

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- Definition Purchase price of common stock expressed as a percentage of its fair value. + References No definition available. + Details Name: us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardPurchasePriceOfCommonStockPercent Namespace Prefix: us-gaap_ Data Type: dtr-types:percentItemType Balance Type: na Period Type: duration

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v3.22.2.2

Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 01, 2022	Oct. 02, 2021	Oct. 01, 2022	Oct. 02, 2021	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Estimated annual effective tax rate			26.60%
Effective income tax rate	26.30%	25.00%	26.20%	26.20%
Unrecognized tax benefits	$ 666		$ 666		$ 700
Unrecognized tax benefits that would impact effective tax rate	293		293		327
Unrecognized tax benefits, interest on income taxes accrued	$ 45		$ 45		$ 56

X

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- Definition Amount of unrecognized tax benefits. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 10B -URI http://asc.fasb.org/extlink&oid=123427490&loc=SL37586934-109318 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121826272&loc=SL6600010-109319 + Details Name: us-gaap_UnrecognizedTaxBenefits Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

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- Definition Amount of interest expense accrued for an underpayment of income taxes. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32718-109319 + Details Name: us-gaap_UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

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- Definition The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121826272&loc=SL6600010-109319 + Details Name: us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

v3.22.2.2

Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 01, 2022	Oct. 02, 2021	Oct. 01, 2022	Oct. 02, 2021
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ (4,829)	$ (3,580)	$ (4,173)	$ (4,547)
Unrealized gains (losses)	(1,934)	(788)	(2,455)	105
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	(113)		(350)
Amounts reclassified from accumulated other comprehensive income (loss)	19	51	89	151
Tax effect	18	(13)	50	(39)
Net of tax amount	(2,010)	(750)	(2,666)	217
Ending balance	(6,839)	(4,330)	(6,839)	(4,330)
Foreign currency translation adjustments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(4,175)	(2,845)	(3,654)	(3,738)
Unrealized gains (losses)	(1,934)	(788)	(2,455)	105
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	0		0
Amounts reclassified from accumulated other comprehensive income (loss)	0	0	0	0
Tax effect	0	0	0	0
Net of tax amount	(1,934)	(788)	(2,455)	105
Ending balance	(6,109)	(3,633)	(6,109)	(3,633)
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(181)	0	0	0
Unrealized gains (losses)	0	0	0	0
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	(113)		(350)
Amounts reclassified from accumulated other comprehensive income (loss)	(11)	0	(3)	0
Tax effect	26	0	74	0
Net of tax amount	(98)	0	(279)	0
Ending balance	(279)	0	(279)	0
Defined benefit pension plans [member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(473)	(735)	(519)	(809)
Unrealized gains (losses)	0	0	0	0
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	0		0
Amounts reclassified from accumulated other comprehensive income (loss)	30	51	92	151
Tax effect	(8)	(13)	(24)	(39)
Net of tax amount	22	38	68	112
Ending balance	$ (451)	$ (697)	$ (451)	$ (697)

X

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- Definition Amount after tax, before reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 20 -Section 35 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=123602790&loc=d3e30304-110892 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 10 -Section 45 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=120253306&loc=d3e28129-110885 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=118261656&loc=d3e32022-110900 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (a-c) -URI http://asc.fasb.org/extlink&oid=124509347&loc=SL7669646-108580 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=124509347&loc=d3e637-108580 + Details Name: us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: duration

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- Definition Amount before tax and reclassification adjustments of other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=124431353&loc=SL124442411-227067 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 45 -Paragraph 20 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118261656&loc=d3e32211-110900 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 45 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=118261656&loc=d3e32136-110900 Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=124431353&loc=SL124442407-227067 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6450520&loc=d3e32583-110901 Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=124509347&loc=SL7669686-108580 + Details Name: us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTax Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: duration

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- Definition Amount after tax and reclassification adjustments of other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=124509347&loc=SL7669619-108580 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=124431353&loc=SL124442407-227067 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=123467817&loc=d3e21463-112644 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 45 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=118261656&loc=d3e32136-110900 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(21)) -URI http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227 Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 55 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=124507222&loc=d3e1436-108581 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 45 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=118261656&loc=d3e32211-110900 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6450520&loc=d3e32583-110901 Reference 9: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=124431353&loc=SL124442411-227067 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1B -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=124509347&loc=SL7669625-108580 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(23)) -URI http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260 Reference 12: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(19)) -URI http://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263 + Details Name: us-gaap_OtherComprehensiveIncomeLossNetOfTax Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: duration

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- Definition Amount, before tax, after reclassification adjustment, of (increase) decrease in accumulated other comprehensive income for defined benefit plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (i-k) -URI http://asc.fasb.org/extlink&oid=124509347&loc=SL7669646-108580 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=124509347&loc=d3e637-108580 Reference 4: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=123450688&loc=d3e4179-114921 + Details Name: us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: debit Period Type: duration

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v3.22.2.2

Per Share Amounts and Common Shares Outstanding (Details) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 01, 2022 USD ($) $ / shares shares	Oct. 02, 2021 USD ($) $ / shares shares	Oct. 01, 2022 USD ($) $ / shares shares	Oct. 02, 2021 USD ($) $ / shares shares	Dec. 31, 2021 $ / shares shares
Equity [Abstract]
Net income | $	$ 20,464	$ 24,927	$ 49,031	$ 57,897
Weighted-average shares outstanding, basic	43,920,000	44,885,000	44,194,000	45,257,000
Weighted-average shares, partially-paid share subscriptions	228,000	0	228,000	0
Basic weighted average shares	44,148,000	44,885,000	44,422,000	45,257,000
Incremental shares from assumed exercise of stock options and awards	2,257,000	3,066,000	2,297,000	2,528,000
Diluted weighted-average shares	46,405,000	47,951,000	46,719,000	47,785,000
Net income per share basic | $ / shares	$ 0.46	$ 0.56	$ 1.10	$ 1.28
Net income per share diluted | $ / shares	$ 0.44	$ 0.52	$ 1.05	$ 1.21
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares outstanding at January 1, 2022			44,502,222
Shares purchased			(2,527,871)
Shares sold			1,249,835
Stock subscription offering -- cash purchases			152,800
Options and awards exercised			368,402
Shares outstanding at October 1, 2022	43,745,388		43,745,388
Employee options exercisable	1,725,879		1,725,879
Common stock, shares subscribed but unissued	1,318,450		1,318,450
Purchase rights, outstanding	487,488		487,488
Stock split, conversion ratio			2
Common stock, shares authorized	96,000,000		96,000,000		96,000,000
Common stock, par value per share | $ / shares	$ 0.50		$ 0.50		$ 0.50
Stock subscription offering -- cash purchases			152,800
Previously reported
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock, shares authorized	48,000,000		48,000,000
Common stock, par value per share | $ / shares					$ 1.00
Common shares, net of treasury shares [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares outstanding at January 1, 2022			35,110,432
Shares purchased			(1,646,735)
Shares sold			472,110
Stock subscription offering -- cash purchases			152,800
Options and awards exercised			368,402
Shares outstanding at October 1, 2022	34,457,009		34,457,009
Stock subscription offering -- cash purchases			152,800
Redeemable shares [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares outstanding at January 1, 2022			9,391,790
Shares purchased			(881,136)
Shares sold			777,725
Stock subscription offering -- cash purchases			0
Options and awards exercised			0
Shares outstanding at October 1, 2022	9,288,379		9,288,379
Stock subscription offering -- cash purchases			0
Stock option plans [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Employee options exercisable	1,725,879		1,725,879

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- Definition Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=125511455&loc=d3e1448-109256 + Details Name: us-gaap_WeightedAverageNumberOfSharesOutstandingBasic Namespace Prefix: us-gaap_ Data Type: xbrli:sharesItemType Balance Type: na Period Type: duration

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- Details Name: us-gaap_AwardTypeAxis=us-gaap_EmployeeStockOptionMember Namespace Prefix: Data Type: na Balance Type: Period Type:

v3.22.2.2

Per Share Amounts and Common Shares Outstanding Stock subscription (Details)	9 Months Ended
	Oct. 01, 2022 USD ($) $ / shares shares
Equity [Abstract]
Common stock, shares subscribed but unissued	1,318,450
Stock subscription offering, total number of shares offered	2,666,667
Stock subscription offering, subscription price | $ / shares	$ 18.10
Stock subscription offering, number of shares subscribed	1,476,250
stock subscription offering, value of shares subscribed | $	$ 26,720,000
Stock subscription offering, minimum financed amount | $	$ 5,000
Stock subscription offering, down payment	10.00%
Stock subscription offering, term (in years)	7 years
stock subscription offering, minimum interest rate offered	0.0200
Stock subscription offering, interest rate	3.15%
Stock subscription offering, minimum amount to receive right | $	$ 5,000
Stock subscription offering, number of shares purchased to receive one right	3
Stock subscription offering, number of rights issued	489,169
Stock subscription offering, right expiration term (in years)	7 years

X

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- Definition Stock subscription offering interest rate + References No definition available. + Details Name: davey_StockSubscriptionOfferingInterestRate Namespace Prefix: davey_ Data Type: dtr-types:percentItemType Balance Type: na Period Type: duration

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- Definition stock subscription offering, number of rights issued + References No definition available. + Details Name: davey_StockSubscriptionOfferingNumberOfRightsIssued Namespace Prefix: davey_ Data Type: xbrli:sharesItemType Balance Type: na Period Type: duration

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v3.22.2.2

Operations by Business Segment (Details) $ in Thousands		3 Months Ended		9 Months Ended
		Oct. 01, 2022 USD ($)	Oct. 02, 2021 USD ($)	Oct. 01, 2022 USD ($)	Oct. 02, 2021 USD ($)	Dec. 31, 2021 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments				2
Revenues		$ 398,945	$ 370,244	$ 1,143,548	$ 1,024,541
Income (loss) from operations		33,013	36,933	79,502	87,931
Interest expense		(2,164)	(1,449)	(5,312)	(4,093)
Interest income		303	39	489	161
Other income (expense), net		(3,371)	(2,298)	(8,241)	(5,548)
Income before income taxes		27,781	33,225	66,438	78,451
Segment assets, total		899,971	775,713	899,971	775,713	$ 772,941
Utility
Segment Reporting Information [Line Items]
Revenues		217,305	204,960	637,900	557,349
Income (loss) from operations		16,790	23,124	49,260	50,015
Segment assets, total		331,393	286,157	331,393	286,157
Residential and commercial
Segment Reporting Information [Line Items]
Revenues		180,706	164,737	504,064	465,524
Income (loss) from operations		21,204	17,595	50,759	51,893
Segment assets, total		305,216	278,847	305,216	278,847
All other
Segment Reporting Information [Line Items]
Revenues		934	547	1,584	1,668
Income (loss) from operations		(4,033)	(2,701)	(14,852)	(11,367)
Segment assets, total		0	0	0	0
Reconciling Adjustments
Segment Reporting Information [Line Items]
Revenues		0	0	0	0
Income (loss) from operations	[1]	(948)	(1,085)	(5,665)	(2,610)
Interest expense		(2,164)	(1,449)	(5,312)	(4,093)
Interest income		303	39	489	161
Other income (expense), net		(3,371)	(2,298)	(8,241)	(5,548)
Segment assets, total	[2]	$ 263,362	$ 210,709	$ 263,362	$ 210,709
[1] Reclassification of depreciation expense and allocation of corporate expenses [2] Corporate assets include cash, prepaid expenses, corporate facilities, enterprise-wide information systems and other nonoperating assets.

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- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. 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Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(g)(1)(ii)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 Reference 20: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 235 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-05(b)(2)) -URI http://asc.fasb.org/extlink&oid=120399901&loc=d3e537907-122884 Reference 21: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(4)(iii)(B)) -URI http://asc.fasb.org/extlink&oid=124359900&loc=SL124442552-122756 Reference 22: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(4)(ii)) -URI http://asc.fasb.org/extlink&oid=124359900&loc=SL124442526-122756 Reference 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v3.22.2.2

Revenue Recognition (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 01, 2022	Oct. 02, 2021	Oct. 01, 2022	Oct. 02, 2021
Disaggregation of revenue [Line Items]
Revenue from contracts with customers	$ 398,945	$ 370,244	$ 1,143,548	$ 1,024,541
United States
Disaggregation of revenue [Line Items]
Revenue from contracts with customers	376,343	347,696	1,079,037	959,644
Canada
Disaggregation of revenue [Line Items]
Revenue from contracts with customers	22,602	22,548	64,511	64,897
Tree and plant care
Disaggregation of revenue [Line Items]
Revenue from contracts with customers	243,192	236,971	714,842	665,200
Grounds maintenance
Disaggregation of revenue [Line Items]
Revenue from contracts with customers	46,056	40,452	128,114	116,810
Storm damage services
Disaggregation of revenue [Line Items]
Revenue from contracts with customers	9,568	12,740	16,298	19,483
Consulting and other
Disaggregation of revenue [Line Items]
Revenue from contracts with customers	100,129	80,081	284,294	223,048
Utility
Disaggregation of revenue [Line Items]
Revenue from contracts with customers	217,305	204,960	637,900	557,349
Utility | United States
Disaggregation of revenue [Line Items]
Revenue from contracts with customers	207,004	194,140	608,411	525,818
Utility | Canada
Disaggregation of revenue [Line Items]
Revenue from contracts with customers	10,301	10,820	29,489	31,531
Utility | Tree and plant care
Disaggregation of revenue [Line Items]
Revenue from contracts with customers	138,112	140,039	420,791	393,742
Utility | Grounds maintenance
Disaggregation of revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Utility | Storm damage services
Disaggregation of revenue [Line Items]
Revenue from contracts with customers	7,004	10,052	10,136	13,997
Utility | Consulting and other
Disaggregation of revenue [Line Items]
Revenue from contracts with customers	72,189	54,869	206,973	149,610
Residential and commercial
Disaggregation of revenue [Line Items]
Revenue from contracts with customers	180,706	164,737	504,064	465,524
Residential and commercial | United States
Disaggregation of revenue [Line Items]
Revenue from contracts with customers	168,405	153,009	469,042	432,158
Residential and commercial | Canada
Disaggregation of revenue [Line Items]
Revenue from contracts with customers	12,301	11,728	35,022	33,366
Residential and commercial | Tree and plant care
Disaggregation of revenue [Line Items]
Revenue from contracts with customers	105,108	96,961	294,206	271,682
Residential and commercial | Grounds maintenance
Disaggregation of revenue [Line Items]
Revenue from contracts with customers	46,056	40,452	128,114	116,810
Residential and commercial | Storm damage services
Disaggregation of revenue [Line Items]
Revenue from contracts with customers	2,564	2,688	6,162	5,486
Residential and commercial | Consulting and other
Disaggregation of revenue [Line Items]
Revenue from contracts with customers	26,978	24,636	75,582	71,546
All other
Disaggregation of revenue [Line Items]
Revenue from contracts with customers	934	547	1,584	1,668
All other | United States
Disaggregation of revenue [Line Items]
Revenue from contracts with customers	934	547	1,584	1,668
All other | Canada
Disaggregation of revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
All other | Tree and plant care
Disaggregation of revenue [Line Items]
Revenue from contracts with customers	(28)	(29)	(155)	(224)
All other | Grounds maintenance
Disaggregation of revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
All other | Storm damage services
Disaggregation of revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
All other | Consulting and other
Disaggregation of revenue [Line Items]
Revenue from contracts with customers	$ 962	$ 576	$ 1,739	$ 1,892

X

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- Definition Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8906-108599 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 40 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e9031-108599 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e9038-108599 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8933-108599 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8933-108599 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130543-203045 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8736-108599 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8736-108599 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 42 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e9054-108599 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130545-203045 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 924 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 11.L) -URI http://asc.fasb.org/extlink&oid=6472922&loc=d3e499488-122856 + Details Name: us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: duration

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v3.22.2.2

Revenue Recognition Contract with customer, asset and liability (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 01, 2022	Oct. 02, 2021	Oct. 01, 2022	Oct. 02, 2021	Dec. 31, 2021
Revenue Recognition [Abstract]
Liability recognized in revenue	$ 616	$ 239	$ 1,676	$ 1,294
Contract liabilities - current	4,599		4,599		$ 3,888
Contract liabilities - noncurrent	1,951		1,951		1,845
Net contract liabilities	$ 6,550		$ 6,550		$ 5,733

X

- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=123360276&loc=SL49130531-203044 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130549-203045 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=123360276&loc=SL49130532-203044 + Details Name: us-gaap_ContractWithCustomerLiability Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

X

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X

- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as noncurrent. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=123360276&loc=SL49130532-203044 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=123360276&loc=SL49130531-203044 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130549-203045 + Details Name: us-gaap_ContractWithCustomerLiabilityNoncurrent Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

X

- Definition Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130549-203045 + Details Name: us-gaap_ContractWithCustomerLiabilityRevenueRecognized Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: duration

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v3.22.2.2

Fair Value Measurements and Financial Instruments (Details) - USD ($) $ in Thousands	Oct. 01, 2022	Dec. 31, 2021
Fair value, assets and liabilities measured on recurring and nonrecurring basis [Line Items]
Certificates of deposits, current	$ 4,000	$ 4,250
Available-for-sale debt securities:	20,518	3,406
Marketable equity securities:	18,846	11,386
United States Government and agency securities
Fair value, assets and liabilities measured on recurring and nonrecurring basis [Line Items]
Available-for-sale debt securities:	20,261	3,230
Corporate notes and bonds
Fair value, assets and liabilities measured on recurring and nonrecurring basis [Line Items]
Available-for-sale debt securities:	257	176
Total carrying value
Fair value, assets and liabilities measured on recurring and nonrecurring basis [Line Items]
Available-for-sale debt securities:	20,518	3,406
Marketable equity securities:		11,386
Fair value, measurements, recurring [Member] | Total carrying value
Fair value, assets and liabilities measured on recurring and nonrecurring basis [Line Items]
Available-for-sale debt securities:	20,518	3,406
Marketable equity securities:	18,846	11,386
Deferred compensation	4,759	4,333
Fair value, measurements, recurring [Member] | Total carrying value | Certificates of deposit
Fair value, assets and liabilities measured on recurring and nonrecurring basis [Line Items]
Certificates of deposits, current	4,000	4,250
Certificates of deposits, noncurrent	7,109	10,609
Fair value, measurements, recurring [Member] | Total carrying value | United States Government and agency securities
Fair value, assets and liabilities measured on recurring and nonrecurring basis [Line Items]
Available-for-sale debt securities:	20,261	3,230
Fair value, measurements, recurring [Member] | Total carrying value | Corporate notes and bonds
Fair value, assets and liabilities measured on recurring and nonrecurring basis [Line Items]
Available-for-sale debt securities:	257	176
Fair value, measurements, recurring [Member] | Total carrying value | Mutual funds
Fair value, assets and liabilities measured on recurring and nonrecurring basis [Line Items]
Marketable equity securities:	14,894	7,476
Fair value, measurements, recurring [Member] | Total carrying value | Common stock
Fair value, assets and liabilities measured on recurring and nonrecurring basis [Line Items]
Marketable equity securities:	2,819	1,934
Fair value, measurements, recurring [Member] | Total carrying value | Exchange traded funds
Fair value, assets and liabilities measured on recurring and nonrecurring basis [Line Items]
Marketable equity securities:	1,133	1,976
Fair value, measurements, recurring [Member] | Quoted prices in active markets (level 1)
Fair value, assets and liabilities measured on recurring and nonrecurring basis [Line Items]
Available-for-sale debt securities:	20,518	3,406
Marketable equity securities:	18,846	11,386
Deferred compensation	0	0
Fair value, measurements, recurring [Member] | Quoted prices in active markets (level 1) | Certificates of deposit
Fair value, assets and liabilities measured on recurring and nonrecurring basis [Line Items]
Certificates of deposits, current	4,000	4,250
Certificates of deposits, noncurrent	7,109	10,609
Fair value, measurements, recurring [Member] | Quoted prices in active markets (level 1) | United States Government and agency securities
Fair value, assets and liabilities measured on recurring and nonrecurring basis [Line Items]
Available-for-sale debt securities:	20,261	3,230
Fair value, measurements, recurring [Member] | Quoted prices in active markets (level 1) | Corporate notes and bonds
Fair value, assets and liabilities measured on recurring and nonrecurring basis [Line Items]
Available-for-sale debt securities:	257	176
Fair value, measurements, recurring [Member] | Quoted prices in active markets (level 1) | Mutual funds
Fair value, assets and liabilities measured on recurring and nonrecurring basis [Line Items]
Marketable equity securities:	14,894	7,476
Fair value, measurements, recurring [Member] | Quoted prices in active markets (level 1) | Common stock
Fair value, assets and liabilities measured on recurring and nonrecurring basis [Line Items]
Marketable equity securities:	2,819	1,934
Fair value, measurements, recurring [Member] | Quoted prices in active markets (level 1) | Exchange traded funds
Fair value, assets and liabilities measured on recurring and nonrecurring basis [Line Items]
Marketable equity securities:	1,133	1,976
Fair value, measurements, recurring [Member] | Significant other observable inputs (level 2)
Fair value, assets and liabilities measured on recurring and nonrecurring basis [Line Items]
Available-for-sale debt securities:	0	0
Marketable equity securities:	0	0
Deferred compensation	4,759	4,333
Fair value, measurements, recurring [Member] | Significant other observable inputs (level 2) | Certificates of deposit
Fair value, assets and liabilities measured on recurring and nonrecurring basis [Line Items]
Certificates of deposits, current	0	0
Certificates of deposits, noncurrent	0	0
Fair value, measurements, recurring [Member] | Significant other observable inputs (level 2) | United States Government and agency securities
Fair value, assets and liabilities measured on recurring and nonrecurring basis [Line Items]
Available-for-sale debt securities:	0	0
Fair value, measurements, recurring [Member] | Significant other observable inputs (level 2) | Corporate notes and bonds
Fair value, assets and liabilities measured on recurring and nonrecurring basis [Line Items]
Available-for-sale debt securities:	0	0
Fair value, measurements, recurring [Member] | Significant other observable inputs (level 2) | Mutual funds
Fair value, assets and liabilities measured on recurring and nonrecurring basis [Line Items]
Marketable equity securities:	0	0
Fair value, measurements, recurring [Member] | Significant other observable inputs (level 2) | Common stock
Fair value, assets and liabilities measured on recurring and nonrecurring basis [Line Items]
Marketable equity securities:	0	0
Fair value, measurements, recurring [Member] | Significant other observable inputs (level 2) | Exchange traded funds
Fair value, assets and liabilities measured on recurring and nonrecurring basis [Line Items]
Marketable equity securities:	0	0
Fair value, measurements, recurring [Member] | Significant unobservable inputs (level 3)
Fair value, assets and liabilities measured on recurring and nonrecurring basis [Line Items]
Available-for-sale debt securities:	0	0
Marketable equity securities:	0	0
Deferred compensation	0	0
Fair value, measurements, recurring [Member] | Significant unobservable inputs (level 3) | Certificates of deposit
Fair value, assets and liabilities measured on recurring and nonrecurring basis [Line Items]
Certificates of deposits, current	0	0
Certificates of deposits, noncurrent	0	0
Fair value, measurements, recurring [Member] | Significant unobservable inputs (level 3) | United States Government and agency securities
Fair value, assets and liabilities measured on recurring and nonrecurring basis [Line Items]
Available-for-sale debt securities:	0	0
Fair value, measurements, recurring [Member] | Significant unobservable inputs (level 3) | Corporate notes and bonds
Fair value, assets and liabilities measured on recurring and nonrecurring basis [Line Items]
Available-for-sale debt securities:	0	0
Fair value, measurements, recurring [Member] | Significant unobservable inputs (level 3) | Mutual funds
Fair value, assets and liabilities measured on recurring and nonrecurring basis [Line Items]
Marketable equity securities:	0	0
Fair value, measurements, recurring [Member] | Significant unobservable inputs (level 3) | Common stock
Fair value, assets and liabilities measured on recurring and nonrecurring basis [Line Items]
Marketable equity securities:	0	0
Fair value, measurements, recurring [Member] | Significant unobservable inputs (level 3) | Exchange traded funds
Fair value, assets and liabilities measured on recurring and nonrecurring basis [Line Items]
Marketable equity securities:	$ 0	$ 0

X

- Definition Investments current fair value disclosure + References No definition available. + Details Name: davey_InvestmentsCurrentFairValueDisclosure Namespace Prefix: davey_ Data Type: xbrli:monetaryItemType Balance Type: debit Period Type: instant

X

- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(6)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=124260329&loc=d3e26610-111562 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27161-111563 + Details Name: us-gaap_AvailableForSaleSecuritiesDebtSecurities Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: debit Period Type: instant

X

- Definition Aggregate carrying value as of the balance sheet date of the liabilities for all deferred compensation arrangements. Represents currently earned compensation under compensation arrangements that is not actually paid until a later date. + References No definition available. + Details Name: us-gaap_DeferredCompensationLiabilityCurrentAndNoncurrent Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

X

- Definition Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=123594786&loc=SL75136599-209740 + Details Name: us-gaap_EquitySecuritiesFvNiCurrentAndNoncurrent Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: debit Period Type: instant

X

- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details Name: us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems Namespace Prefix: us-gaap_ Data Type: xbrli:stringItemType Balance Type: na Period Type: duration

X

- Definition Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258 + Details Name: us-gaap_InvestmentsFairValueDisclosure Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: debit Period Type: instant

X

- Details Name: us-gaap_FinancialInstrumentAxis=us-gaap_USTreasuryAndGovernmentMember Namespace Prefix: Data Type: na Balance Type: Period Type:

X

- Details Name: us-gaap_FinancialInstrumentAxis=us-gaap_CorporateDebtSecuritiesMember Namespace Prefix: Data Type: na Balance Type: Period Type:

X

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X

- Details Name: us-gaap_FairValueByMeasurementFrequencyAxis=us-gaap_FairValueMeasurementsRecurringMember Namespace Prefix: Data Type: na Balance Type: Period Type:

X

- Details Name: us-gaap_FinancialInstrumentAxis=us-gaap_CertificatesOfDepositMember Namespace Prefix: Data Type: na Balance Type: Period Type:

X

- Details Name: us-gaap_FinancialInstrumentAxis=us-gaap_MutualFundMember Namespace Prefix: Data Type: na Balance Type: Period Type:

X

- Details Name: us-gaap_FinancialInstrumentAxis=us-gaap_CommonStockMember Namespace Prefix: Data Type: na Balance Type: Period Type:

X

- Details Name: us-gaap_FinancialInstrumentAxis=us-gaap_ExchangeTradedFundsMember Namespace Prefix: Data Type: na Balance Type: Period Type:

X

- Details Name: us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel1Member Namespace Prefix: Data Type: na Balance Type: Period Type:

X

- Details Name: us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member Namespace Prefix: Data Type: na Balance Type: Period Type:

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- Details Name: us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member Namespace Prefix: Data Type: na Balance Type: Period Type:

v3.22.2.2

Fair Value Measurements and Financial Instruments Fair value of financial instruments (Details) - USD ($) $ in Thousands	Oct. 01, 2022	Dec. 31, 2021
Liabilities, fair value disclosure [Abstract]
Available-for-sale debt securities:	$ 20,518	$ 3,406
Marketable equity securities:	18,846	11,386
Revolving credit facility, noncurrent	98,099	46,832
Carrying value
Liabilities, fair value disclosure [Abstract]
Available-for-sale debt securities:	20,518	3,406
Marketable equity securities:		11,386
Revolving credit facility, noncurrent	98,099	46,832
Senior unsecured notes, noncurrent	75,000	75,000
Term loans, noncurrent	2,038	2,373
Total	175,137	124,205
Fair value
Liabilities, fair value disclosure [Abstract]
Available-for-sale debt securities:	20,518	3,406
Marketable equity securities:	18,846	11,386
Revolving credit facility, noncurrent	98,099	46,832
Senior unsecured notes, noncurrent	73,396	78,432
Term loans, noncurrent	1,973	2,431
Total	$ 173,468	$ 127,695

X

- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(6)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=124260329&loc=d3e26610-111562 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27161-111563 + Details Name: us-gaap_AvailableForSaleSecuritiesDebtSecurities Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: debit Period Type: instant

X

- Definition Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 55 -Paragraph 69C -URI http://asc.fasb.org/extlink&oid=123466577&loc=SL123495737-112612 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 55 -Paragraph 69B -URI http://asc.fasb.org/extlink&oid=123466577&loc=SL123495735-112612 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=123594938&loc=d3e13433-108611 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1D -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495340-112611 + Details Name: us-gaap_DebtInstrumentFairValue Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

X

- Definition Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=123594786&loc=SL75136599-209740 + Details Name: us-gaap_EquitySecuritiesFvNiCurrentAndNoncurrent Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: debit Period Type: instant

X

- References No definition available. + Details Name: us-gaap_LiabilitiesFairValueDisclosureAbstract Namespace Prefix: us-gaap_ Data Type: xbrli:stringItemType Balance Type: na Period Type: duration

X

- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 + Details Name: us-gaap_LineOfCredit Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

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- Definition Fair value portion of notes payable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19,20,22) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details Name: us-gaap_NotesPayableFairValueDisclosure Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

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- Definition Including the current and noncurrent portions, carrying value as of the balance sheet date of uncollateralized debt obligations (with maturities initially due after one year or beyond the operating cycle if longer). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 + Details Name: us-gaap_UnsecuredDebt Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

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- Details Name: us-gaap_FairValueByMeasurementBasisAxis=us-gaap_EstimateOfFairValueFairValueDisclosureMember Namespace Prefix: Data Type: na Balance Type: Period Type:

v3.22.2.2

Commitments and contingencies Details (Details)	9 Months Ended
	Oct. 01, 2022
Loss contingency, number of claims alleged	3
Northern California wildfires
Loss contingency, number of claims alleged	5
Fire Victims Trust
Loss contingency, number of claims alleged	3
Wolf employee defendants [Member]
Loss contingency, number of defendants	2
Former Wolf employee defendants [Member]
Loss contingency, number of defendants	2
Employee and former employee defendants [Member]
Loss contingency, number of defendants	4
Defendants who pled guilty
Loss contingency, number of defendants	2
defendants indicted [Member]
Loss contingency, number of defendants	3

X

- Definition Loss contingency number of claims alleged + References No definition available. + Details Name: davey_Losscontingencynumberofclaimsalleged Namespace Prefix: davey_ Data Type: xbrli:pureItemType Balance Type: na Period Type: duration

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- Details Name: davey_TypeOfLawsuitAxis=davey_NorthernCaliforniaWildfiresMember Namespace Prefix: Data Type: na Balance Type: Period Type:

X

- Details Name: davey_TypeOfLawsuitAxis=davey_FireVictimsTrustMember Namespace Prefix: Data Type: na Balance Type: Period Type:

X

- Details Name: srt_StatementScenarioAxis=davey_WolfemployeedefendantsMember Namespace Prefix: Data Type: na Balance Type: Period Type:

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- Details Name: srt_StatementScenarioAxis=davey_FormerWolfemployeedefendantsMember Namespace Prefix: Data Type: na Balance Type: Period Type:

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- Details Name: srt_StatementScenarioAxis=davey_EmployeeandformeremployeedefendantsMember Namespace Prefix: Data Type: na Balance Type: Period Type:

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X

- Details Name: srt_StatementScenarioAxis=davey_DefendantsIndictedMember Namespace Prefix: Data Type: na Balance Type: Period Type:

v3.22.2.2

The Davey 401KSOP and Employee Stock Ownership Plan (Details) - USD ($) $ in Thousands	9 Months Ended
	Oct. 01, 2022	Dec. 31, 2021
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]
Employee Stock Ownership Plan (ESOP), initial shares in ESOP	120,000
Employee Stock Ownership Plan (ESOP), shares adjusted for stock split	46,080,000
Employee Stock Ownership Plan (ESOP), initial value in ESOP	$ 2,700
Defined contribution plan, employer matching contribution, percent of employees' gross pay	2.00%
Defined contribution plan, eligible age	21 years
Defined contribution plan, service requirement for eligibility	1 year
Number of put option periods	2
Duration of put option periods	60 days
Employee Stock Ownership Plan (ESOP), fair value of shares subject to repurchase obligation	$ 990	$ 1,279
Company shares held in 401KSOP, fair value	167,130	168,652
Redeemable common shares related to 401KSOP and Employee Stock Ownership Plan (ESOP)	$ 168,120	$ 169,931
Defined contribution plan, tier 1
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]
Defined contribution plan, employer matching contribution, percent of match	100.00%
Defined contribution plan, tier 2
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]
Defined contribution plan, employer matching contribution, percent of match	50.00%
Maximum [Member] | Defined contribution plan, tier 1
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]
Defined contribution plan, employer matching contribution, percent of employees' gross pay	3.00%
Maximum [Member] | Defined contribution plan, tier 2
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]
Defined contribution plan, employer matching contribution, percent of employees' gross pay	5.00%

X

- Definition Company shares held in 401KSOP and ESOP, fair value + References No definition available. + Details Name: davey_Companysharesheldin401KSOPandESOPfairvalue Namespace Prefix: davey_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

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X

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X

- Definition Employee Stock Ownership Plan (ESOP), Shares Adjusted for Stock Splits + References No definition available. + Details Name: davey_EmployeeStockOwnershipPlanESOPSharesAdjustedForStockSplits Namespace Prefix: davey_ Data Type: xbrli:sharesItemType Balance Type: na Period Type: instant

X

- Definition Employee Stock Ownership Plan (ESOP), Initial Shares in ESOP + References No definition available. + Details Name: davey_EmployeeStockOwnershipPlanEsopInitialSharesInEsop Namespace Prefix: davey_ Data Type: xbrli:sharesItemType Balance Type: na Period Type: instant

X

- Definition Employee Stock Ownership Plan (ESOP), Initial Value in ESOP + References No definition available. + Details Name: davey_EmployeeStockOwnershipPlanEsopInitialValueInEsop Namespace Prefix: davey_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: instant

X

- Definition Number of put option periods + References No definition available. + Details Name: davey_Numberofputoptionperiods Namespace Prefix: davey_ Data Type: xbrli:pureItemType Balance Type: na Period Type: duration

X

- Definition Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan. + References No definition available. + Details Name: us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent Namespace Prefix: us-gaap_ Data Type: dtr-types:percentItemType Balance Type: na Period Type: duration

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- Definition Percentage employer matches of the employee's percentage contribution matched. + References No definition available. + Details Name: us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch Namespace Prefix: us-gaap_ Data Type: dtr-types:percentItemType Balance Type: na Period Type: duration

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details Name: us-gaap_EmployeeStockOwnershipPlanESOPDisclosuresLineItems Namespace Prefix: us-gaap_ Data Type: xbrli:stringItemType Balance Type: na Period Type: duration

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v3.22.2.2

Investments, Debt and Equity Securities (Details) - USD ($) $ in Thousands	Oct. 01, 2022	Dec. 31, 2021
Debt Securities, Available-for-sale [Line Items]
Debt securities, svailable-for-sale, amortized cost	$ 20,871	$ 3,418
Debt securities, available-for-sale, gross unrealized gains	6	13
Debt securities, available-for-sale, gross unrealized losses	(359)	(25)
Available-for-sale debt securities:	20,518	3,406
Less than one year	12,999
Less than one year	12,997
One year through five years	5,729
One year through five years	5,568
Five years through ten years	234
Five years through ten years	191
After ten years	1,909
After ten years	1,762
Total	20,871
Total	20,518
Marketable equity securities:	18,846	11,386
United States Government and agency securities
Debt Securities, Available-for-sale [Line Items]
Debt securities, svailable-for-sale, amortized cost	20,556	3,244
Debt securities, available-for-sale, gross unrealized gains	6	11
Debt securities, available-for-sale, gross unrealized losses	(301)	(25)
Available-for-sale debt securities:	20,261	3,230
Corporate notes and bonds
Debt Securities, Available-for-sale [Line Items]
Debt securities, svailable-for-sale, amortized cost	315	174
Debt securities, available-for-sale, gross unrealized gains	0	2
Debt securities, available-for-sale, gross unrealized losses	(58)	0
Available-for-sale debt securities:	$ 257	$ 176

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