Annual report [Section 13 and 15(d), not S-K Item 405]

STOCK-BASED COMPENSATION - Additional Information (Details)

v3.25.4
STOCK-BASED COMPENSATION - Additional Information (Details) - USD ($)
$ / shares in Units, $ in Millions
1 Months Ended 12 Months Ended
Jul. 31, 2024
Jan. 03, 2026
Dec. 28, 2024
Dec. 30, 2023
Feb. 20, 2025
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Forfeiture of unvested RSU   32,000      
Stock option granted, shares   133,000      
Stock-based compensation expense   $ 5.1 $ 3.4 $ 11.6  
Black Scholes Valuation Model [Member]          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Options grant date fair value   $ 0.6 $ 0.6    
Employee Stock Purchase Plan [Member]          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Rate of common stock at market value   85.00%      
Employee Stock Purchase Plan and U.K. Plan [Member]          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Shares available for issuance   192,447      
Number of shares purchased by employees   59,524 48,261 43,585  
Weighted average price   $ 30.61 $ 38.36 $ 46.52  
Share-based compensation expenses   $ 0.6 $ 0.4 $ 0.5  
Ratio for additional common stock shares issued, under ESPP   6      
Share Repurchase Plan [Member]          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Share repurchase program outstanding common stock         $ 100.0
Share Repurchase Program, Authorized, Number of Shares   330,000      
Share repurchase program remaining outstanding repurchase amount   $ 86.5      
Time Based [Member]          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Vesting period   3 years      
Performance Based [Member]          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Vesting period   3 years      
Performance Based [Member] | Minimum [Member]          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Target amount percentage   0.00%      
Performance Based [Member] | Maximum [Member]          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Target amount percentage   225.00%      
RSUs [Member]          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Forfeiture of unvested RSU 3,800,000        
RSUs [Member] | Minimum [Member]          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Target amount percentage   0.00%      
RSUs [Member] | Maximum [Member]          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Target amount percentage   200.00%      
Restricted Stock and Restricted Stock Units [Member]          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Compensation expense   $ 2.8 3.4 8.4  
Fair value of RSUs/restricted stock granted   5.4 13.6 $ 13.3  
Total unrecognized compensation   $ 4.6      
Recognized weighted average period (in years)   1 year 6 months      
Employee Stock Option          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Compensation expense   $ 0.8      
Unrecognized compensation cost related to the stock options   $ 1.8      
Recognized weighted average period (in years)   2 years 1 month 6 days      
Stock-based compensation expense     $ 1.6    
Options Forfeited   1,700,000      
Unvested stock options   155,012      
Employee Stock Option | Monte Carlo Valuation Model [Member]          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Options grant date fair value   $ 2.3      
Unvested stock options   5,334      
Vested unexercised stock options   2,666      
Exercise price per share   $ 50.6      
Employee Stock Option | Black Scholes Valuation Model [Member]          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Vesting period       3 years  
Contractual term of stock options   10 years 10 years    
Options grant date fair value   $ 2.5      
Exercise prices per share, lower range limit   $ 35.04      
Exercise prices per share, upper range limit   $ 55.03      
Unvested stock options   114,699 31,160    
Vested unexercised stock options   2,027      
Exercise price per share   $ 39.8 $ 40.13    
2019 Plan [Member]          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Stock-based compensation expense   $ 1.0 $ 1.2 $ 1.3  
2023 And 2019 Equity Incentive Plan [Member]          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Shares available for issuance   643,687      
Stock option granted, shares   25,117 23,031    
2023 Equity Incentive Plan          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Shares available for issuance   1,000,000