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Stock-Based Compensation - Narrative (Details) - $ / shares
9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
2019 Performance Award Plan    
Stock-Based Plans    
Granted (in shares) 116,844  
Granted, weighted average grant date fair value (in dollars per share) $ 20.18  
Executives | Restricted stock units    
Stock-Based Plans    
Granted (in shares) 596,391 1,098,926
Granted, weighted average grant date fair value (in dollars per share) $ 18.67 $ 8.81
Executives | Stock options    
Stock-Based Plans    
Options granted (in shares) 481,626 672,309
Options granted weighted-average exercise price, per share (in dollars per share) $ 17.96 $ 8.81
Executives | Stock-based VDI units    
Stock-Based Plans    
Granted (in shares) 613,868 1,156,365
Vesting period (in years) 3 years  
Executives | Stock-based VDI units | 2019 Performance Award Plan    
Stock-Based Plans    
Post-vest holding period (in years) 3 years