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Stock Incentive Plans - Additional Information (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Apr. 28, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Stock-based compensation expense $ 2.9 $ 2.4 $ 8.7 $ 7.4  
Restricted Stock          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Total unrecognized compensation expenses $ 24.0   $ 24.0    
Weighted average period expected to be recognized     3 years 1 month 6 days    
Restricted Stock | Minimum          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Vesting period     1 year    
Restricted Stock | Maximum          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Vesting period     10 years    
Option Or Stock Appreciation Right          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Reduction Of Shares Reserved For Grant         1
Common Stock          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Reduction Of Shares Reserved For Grant         2.72
2020 Plan          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Shares available for grant (in shares)         3,600,000