Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation - Narrative (Details)

v3.21.2
Stock-Based Compensation - Narrative (Details) - USD ($)
$ in Millions
9 Months Ended
Sep. 30, 2021
Sep. 24, 2020
Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock compensation expense $ 15.3 $ 11.5  
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 $ 11.6   $ 16.0
Weighted average period for recognition (in years) 2 years    
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 $ 14.5   6.2
Weighted average period for recognition (in years) 3 years 2 months 12 days    
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 $ 12.7   $ 15.2
Weighted average period for recognition (in years) 2 years 1 month 6 days