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Stock-Based Compensation - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Grants in period (in shares) 91,743    
Share-based compensation expense $ 4,600 $ 3,500  
Liability classified awards (credit) expense (1,500) 600  
Accrued employee compensation and benefits 14,554   $ 21,237
Stock-Settled Restricted Stock Units      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Total compensation cost not yet recognized $ 23,600    
Total compensation cost not yet recognized, period for recognition (in years) 1 year 8 months 12 days    
Stock Options      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Total compensation cost not yet recognized $ 4,600    
Total compensation cost not yet recognized, period for recognition (in years) 1 year 9 months 18 days    
Cash-settled Restricted Stock Units      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based compensation expense $ 1,400    
Liability classified awards (credit) expense   (1,300)  
Accrued employee compensation and benefits 800   2,100
LTIP      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based compensation expense 100 $ 800  
Accrued employee compensation and benefits $ 800   $ 2,100
Award vesting period (in years) 3 years    
LTIP | Minimum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Multiplier for target award based on total shareholder return on common stock (percent) 0.00%    
LTIP | Maximum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Multiplier for target award based on total shareholder return on common stock (percent) 200.00%