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Stock-Based Compensation - Narrative (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 12 Months Ended
Jun. 01, 2020
May 29, 2020
Mar. 31, 2021
Mar. 31, 2020
Dec. 31, 2020
Jan. 19, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Vesting of restricted stock units     $ 115 [1]   $ 1,800  
Payments for vesting of phantom shares, number of shares per share granted   1        
Payments for vesting of phantom shares   $ 1,800        
Restricted stock units            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Vested (in shares)     581,000 583,000    
Phantom shares            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Vested (in shares)   1,237,500        
Performance and Incentive Pay Plan            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Percentage of issued and outstanding shares of common stock   5.00%        
Number of shares available for grant   2,508,002 1,146,784     2,508,002
Performance and Incentive Pay Plan | Restricted stock units            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Vested (in shares) 100,000 100,000        
Vested (in dollars per share) $ 11.50 $ 12.65        
Performance and Incentive Pay Plan | Restricted stock units | Minimum            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Award vesting period     2 years      
Performance and Incentive Pay Plan | Restricted stock units | Minimum | Nonemployee            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Award vesting period     2 years      
Performance and Incentive Pay Plan | Restricted stock units | Maximum            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Award vesting period     3 years      
Performance and Incentive Pay Plan | Restricted stock units | Maximum | Nonemployee            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Award vesting period     3 years      
Performance and Incentive Pay Plan | Performance shares | Minimum            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Award vesting period     2 years      
Performance and Incentive Pay Plan | Performance shares | Maximum            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Award vesting period     3 years      
[1] As of March 31, 2021, there were 16,441 unissued shares underlying restricted stock units that had vested.