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Stock-Based Compensation Expense - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2024
Jun. 30, 2024
Jun. 30, 2023
Dec. 31, 2023
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]        
Restricted stock units granted (in shares)     20,358  
Employee Stock Option        
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]        
Options granted in period (in shares)   0 327,294  
Compensation cost not yet recognized $ 15.4 $ 15.4    
Compensation cost not yet recognized, period of recognition   2 years    
Stock-Settled Performance-Based Restricted Stock Units        
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]        
Compensation cost not yet recognized 20.3 $ 20.3    
Compensation cost not yet recognized, period of recognition   2 years 1 month 6 days    
Award vesting period   1 year    
Stock-Settled Performance-Based Restricted Stock Units | Maximum        
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]        
Stock units granted in period (in shares)   364,810 286,863  
Cash-Settled Performance-Based Share-Based Awards (Liability Awards)        
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]        
Target cash incentive   $ 1.6 $ 1.3  
Compensation cost not yet recognized 4.4 $ 4.4    
Compensation cost not yet recognized, period of recognition   2 years    
Fair value of awards $ 3.4 $ 3.4   $ 3.4
Cash-Settled Performance-Based Share-Based Awards (Liability Awards) | Maximum        
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]        
Target cash incentive   $ 4.4 $ 4.4  
Multiplying factor   250.00% 250.00%  
Restricted Stock Units        
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]        
Restricted stock units granted (in shares) 158,719      
Compensation cost not yet recognized $ 10.2 $ 10.2    
Compensation cost not yet recognized, period of recognition   3 years 3 months 18 days    
Restricted Stock Units | Employee        
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]        
Award vesting period   4 years    
Restricted Stock Units | Non-employee members        
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]        
Award vesting period   1 year