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Stock-Based Compensation (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 6 Months Ended
Jul. 02, 2022
Jul. 03, 2021
Jul. 02, 2022
Jul. 03, 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 $ 2,316 $ 1,374 $ 3,586 $ 2,265
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 1,749,031   1,749,031  
Stock option plans [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Compensation expense, share-based payment plans     $ 219 $ 256
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     (201,901)  
Forfeited     (11,910)  
Outstanding, ending balance 2,137,123   2,137,123  
Exercisable, ending balance 1,749,031   1,749,031  
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     8.28  
Forfeited, weighted average exercise price     8.08  
Outstanding, weighted average exercise price, ending balance $ 8.59   8.59  
Exercisable, weighted average exercise price, ending balance $ 8.00   $ 8.00  
Outstanding, weighted average remaining contractual life (years)     4 years 4 months 24 days  
Exercisable, weighted average remaining contractual life (years)     3 years 8 months 12 days  
Outstanding, aggregate intrinsic value $ 20,324   $ 20,324  
Exercisable, aggregate intrinsic value 17,665   17,665  
Outstanding, unrecognized compensation cost $ 568   $ 568  
Employee service share-based compensation, nonvested awards, total compensation cost not yet recognized, period for recognition     1 year 4 months 24 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     $ 44 82
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)     6 months  
Unrecognized compensation cost $ 40   $ 40  
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     $ 2,409 1,157
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     (500)  
Vested     (171,688)  
Unvested, ending balance 919,329   919,329  
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     10.86  
Unvested, weighted average award date value, ending balance $ 14.86   $ 14.86  
Weighted average remaining contractual life (years)     2 years 2 months 12 days  
Unrecognized compensation cost $ 9,424   $ 9,424  
Aggregate intrinsic value $ 16,640   $ 16,640  
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 861,628   861,628  
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 2 months 12 days  
Unrecognized compensation cost $ 8,905   $ 8,905  
Aggregate intrinsic value $ 15,596   $ 15,596  
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 7 months 6 days  
Unrecognized compensation cost $ 519   $ 519  
Aggregate intrinsic value $ 1,044   1,044  
The Davey Employee Stock Purchase Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Compensation expense, share-based payment plans     $ 914 $ 770
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%