Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation - Narrative (Details)

v3.21.1
Stock-Based Compensation - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended
Apr. 01, 2021
Mar. 26, 2020
Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock compensation expense $ 4.7 $ 2.9  
Stock options      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Contractual term (in years) 10 years    
Vesting period (in years) 4 years    
Unrecognized compensation cost $ 16.4   $ 16.0
Weighted average period for recognition (in years) 2 years 4 months 24 days    
Stock options | Minimum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period (in years) 1 year    
Stock options | Maximum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period (in years) 5 years    
Stock options | Tranche one      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting rights (as a percent) 25.00%    
Stock options | Tranche two      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting rights (as a percent) 25.00%    
Stock options | Tranche three      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting rights (as a percent) 25.00%    
Stock options | Tranche four      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting rights (as a percent) 25.00%    
Restricted stock units      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period (in years) 4 years    
Unrecognized compensation cost $ 15.0   6.2
Weighted average period for recognition (in years) 3 years 6 months    
Restricted stock units | Tranche one      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting rights (as a percent) 25.00%    
Restricted stock units | Tranche two      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting rights (as a percent) 25.00%    
Restricted stock units | Tranche three      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting rights (as a percent) 25.00%    
Restricted stock units | Tranche four      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting rights (as a percent) 25.00%    
Restricted stock      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Unrecognized compensation cost $ 15.7   $ 15.2
Weighted average period for recognition (in years) 2 years 6 months