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Stockholders' Equity - Additional Information (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Stock-Based Compensation        
Stock-based compensation expense $ 2,850 $ 2,865 $ 6,035 $ 5,290
Restricted Stock Awards        
Stock-Based Compensation        
Unrecognized compensation cost, RSAs and PSUs 11,600   $ 11,600  
Unrecognized compensation cost, period of recognition     1 year 9 months 18 days  
Vesting period     3 years  
Stock-based compensation expense 2,300 2,200 $ 4,800 4,000
Expiration period     3 years  
Restricted Stock Awards | Tranche 1        
Stock-Based Compensation        
Vesting percentage     33.00%  
Restricted Stock Awards | Tranche 2        
Stock-Based Compensation        
Vesting percentage     33.00%  
Restricted Stock Awards | Tranche 3        
Stock-Based Compensation        
Vesting percentage     33.00%  
Performance Shares        
Stock-Based Compensation        
Unrecognized compensation cost, RSAs and PSUs 2,500   $ 2,500  
Unrecognized compensation cost, period of recognition     1 year 8 months 12 days  
Vesting period     3 years  
Stock-based compensation expense 400 400 $ 800 500
Performance Shares | Minimum        
Stock-Based Compensation        
Payout threshold range     33.00%  
Performance Shares | Maximum        
Stock-Based Compensation        
Payout threshold range     170.00%  
Stock Options        
Stock-Based Compensation        
Vesting period     3 years  
Intrinsic value of options exercised     $ 900 200
Stock-based compensation expense $ 100 $ 400 $ 300 $ 800
Stock Options | Tranche 1        
Stock-Based Compensation        
Vesting percentage     33.00%  
Stock Options | Tranche 2        
Stock-Based Compensation        
Vesting percentage     33.00%  
Stock Options | Tranche 3        
Stock-Based Compensation        
Vesting percentage     33.00%