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Stock-Based Compensation (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2023
Oct. 01, 2022
Sep. 30, 2023
Oct. 01, 2022
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 $ 1,700 $ 1,658 $ 5,105 $ 5,244
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract]        
Volatility rate     9.60% 9.70%
Risk-free interest rate     4.10% 1.70%
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 1,545,520   1,545,520  
Stock option plans [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Compensation expense, share-based payment plans     $ 173 $ 289
Stock options awarded, term (years)     10 years  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]        
Outstanding, beginning balance     2,072,949  
Granted     0  
Exercised     (206,253)  
Forfeited     (120,800)  
Outstanding, ending balance 1,745,896   1,745,896  
Exercisable, ending balance 1,545,520   1,545,520  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]        
Outstanding, weighted average exercise price, beginning balance     $ 8.59  
Granted, weighted average exercise price     0  
Exercised, weighted average exercise price     6.72  
Forfeited, weighted average exercise price     5.80  
Outstanding, weighted average exercise price, ending balance $ 9.01   9.01  
Exercisable, weighted average exercise price, ending balance $ 8.67   $ 8.67  
Outstanding, weighted average remaining contractual life (years)     3 years 7 months 6 days  
Exercisable, weighted average remaining contractual life (years)     3 years 3 months 18 days  
Outstanding, aggregate intrinsic value $ 20,584   $ 20,584  
Exercisable, aggregate intrinsic value 18,747   18,747  
Outstanding, unrecognized compensation cost $ 198   $ 198  
Employee service share-based compensation, nonvested awards, total compensation cost not yet recognized, period for recognition     1 year 1 month 6 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     $ 0 65
Restricted stock units (RSUs) [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Compensation expense, share-based payment plans     $ 3,594 3,510
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward]        
Unvested, beginning balance     766,267  
Granted     238,918  
Forfeited     0  
Vested     (71,342)  
Unvested, ending balance 933,843   933,843  
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     $ 14.95  
Granted, weighted average award date value     18.29  
Forfeited, weighted average award date value     0  
Vested, weighted average award date value     12.18  
Unvested, weighted average award date value, ending balance $ 16.02   $ 16.02  
Weighted average remaining contractual life (years)     1 year 6 months  
Unrecognized compensation cost $ 6,963   $ 6,963  
Aggregate intrinsic value $ 19,424   $ 19,424  
Employee PRSUs [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward]        
Granted     224,540  
Unvested, ending balance 885,572   885,572  
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 $ 15.97   $ 15.97  
Weighted average remaining contractual life (years)     1 year 6 months  
Unrecognized compensation cost $ 6,523   $ 6,523  
Aggregate intrinsic value $ 18,420   $ 18,420  
Nonemployee Director RSUs [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward]        
Granted     14,378  
Unvested, ending balance 48,271   48,271  
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 $ 16.79   $ 16.79  
Weighted average remaining contractual life (years)     1 year 7 months 6 days  
Unrecognized compensation cost $ 440   $ 440  
Aggregate intrinsic value $ 1,004   1,004  
The Davey Employee Stock Purchase Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Compensation expense, share-based payment plans     $ 1,338 $ 1,380
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%