v3.26.3
Stock-Based Compensation (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 9 Months Ended
Oct. 03, 2026
Sep. 27, 2025
Oct. 03, 2026
Sep. 27, 2025
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 $ 1,652 $ 1,736 $ 6,321 $ 6,165
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract]        
Volatility rate     9.20% 9.40%
Risk-free interest rate     3.80% 3.90%
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 623,010   623,010  
Stock option plans [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Compensation expense, share-based payment plans       $ 36
Stock options awarded, term (years)     10 years  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]        
Outstanding, beginning balance     901,632  
Granted     0  
Exercised     (234,422)  
Forfeited     (44,200)  
Outstanding, ending balance 623,010   623,010  
Exercisable, ending balance 623,010   623,010  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]        
Outstanding, weighted average exercise price, beginning balance     $ 9.96  
Granted, weighted average exercise price     0  
Exercised, weighted average exercise price     8.78  
Forfeited, weighted average exercise price     8.18  
Outstanding, weighted average exercise price, ending balance $ 10.54   10.54  
Exercisable, weighted average exercise price, ending balance $ 10.54   $ 10.54  
Outstanding, weighted average remaining contractual life (years)     2 years 6 months  
Exercisable, weighted average remaining contractual life (years)     2 years 6 months  
Outstanding, aggregate intrinsic value $ 11,439   $ 11,439  
Exercisable, aggregate intrinsic value $ 11,439   11,439  
Restricted stock units (RSUs) [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Compensation expense, share-based payment plans     $ 4,465 4,441
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward]        
Unvested, beginning balance     514,734  
Granted     215,668  
Forfeited     (10,640)  
Vested     (224,601)  
Unvested, ending balance 495,161   495,161  
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     $ 21.63  
Granted, weighted average award date value     27.28  
Forfeited, weighted average award date value     22.72  
Vested, weighted average award date value     21.02  
Unvested, weighted average award date value, ending balance $ 24.35   $ 24.35  
Weighted average remaining contractual life (years)     1 year 7 months 6 days  
Unrecognized compensation cost $ 6,349   $ 6,349  
Aggregate intrinsic value $ 14,310   $ 14,310  
Employee PRSUs [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward]        
Granted     206,320  
Unvested, ending balance 470,045   470,045  
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 $ 24.33   $ 24.33  
Weighted average remaining contractual life (years)     1 year 7 months 6 days  
Unrecognized compensation cost $ 5,978   $ 5,978  
Aggregate intrinsic value $ 13,584   $ 13,584  
Nonemployee Director RSUs [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward]        
Granted     9,348  
Unvested, ending balance 25,116   25,116  
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 $ 24.60   $ 24.60  
Weighted average remaining contractual life (years)     1 year 9 months 18 days  
Unrecognized compensation cost $ 371   $ 371  
Aggregate intrinsic value $ 726   726  
The Davey Employee Stock Purchase Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Compensation expense, share-based payment plans     $ 1,856 $ 1,688
Employee stock purchase plan, service period     6 months  
Employee stock purchase plan, percentage of market price, purchase date     85.00%  
Employee stock purchase plan, discount from market price, purchase date     15.00%