Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Details Textual)

v3.24.2.u1
Stock-Based Compensation (Details Textual) - USD ($)
$ / shares in Units, $ in Millions
6 Months Ended
Jun. 29, 2024
Jul. 01, 2023
Dec. 30, 2023
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Unvested Number of shares 427,000   303,000
Stock option granted, shares 295,000    
Stock-based compensation expense $ 6.7 $ 6.5  
2023 Equity Incentive Plan [Member]      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Options Granted 1,000,000    
2019 and 2023 Equity Incentive Plan [Member]      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Stock option granted, shares 11,989    
Stock-based compensation expense $ 0.6    
2019 Plan [Member]      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Stock option granted, shares   8,867  
Stock-based compensation expense   $ 0.7  
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]      
Number of shares purchased by employees 25,494 20,771  
Weighted average price $ 37.79 $ 50.47  
Share-based compensation expenses $ 0.2 $ 0.3  
Ratio for additional common stock shares issued, under ESPP 6    
Monte Carlo Valuation Model [Member] | Minimum [Member]      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Vesting period 1 year    
Monte Carlo Valuation Model [Member] | Maximum [Member]      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Vesting period 2 years    
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    
RSUs [Member]      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Compensation expense $ 5.9 4.4  
Unvested Number of shares 184,914    
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%    
Employee Stock Option [Member]      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Recognized weighted average period (in years) 4 months 24 days    
Unrecognized compensation cost related to the stock options $ 0.1    
Stock-based compensation expense $ 0.1 $ 1.1  
Employee Stock Option [Member] | Monte Carlo Valuation Model [Member]      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Contractual term of stock options 10 years    
Unvested options 68,000    
Vested unexercised options 0    
Exercise price per share $ 50.6    
Employee Stock Option [Member] | 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    
Unvested options 0    
Vested unexercised options 24,233    
Exercise prices per share, lower range limit $ 35.04    
Exercise prices per share, upper range limit $ 55.03    
Restricted Stock and Restricted Stock Units [Member]      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Total unrecognized compensation $ 14.1    
Recognized weighted average period (in years) 2 years