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Equity-Based Compensation - Additional Information (Details)
$ / shares in Units, $ in Millions
12 Months Ended
Dec. 16, 2018
installment
trading_day
$ / shares
shares
Dec. 31, 2020
USD ($)
shares
Dec. 31, 2019
USD ($)
trading_day
installment
$ / shares
shares
Dec. 31, 2018
USD ($)
trading_day
installment
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Options and rights granted (shares)   0 2,256,500 700,000
Unrecognized compensation cost | $   $ 20.2    
Equity-based compensation | $   $ 13.2 $ 10.2 $ 9.3
Restricted Stock Awards        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Awards granted during period (shares)   1,077,367 556,450  
PSUs        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Awards granted during period (shares)   854,367 389,972  
Vesting period   2 years    
Restricted units granted, earned during period (shares)   309,692 245,301  
Stock Option        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Options and rights granted (shares)   0 2,256,500 700,000
Vesting percentage       25.00%
Stock Option | Tranche One        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vesting percentage     33.30% 50.00%
Number of annual installments | installment     3 5
Stock Option | Tranche Two        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vesting percentage     33.30% 25.00%
Share price (in USD per share) | $ / shares     $ 25.00 $ 25.00
Number of consecutive trading days, threshold | trading_day     30 60
Stock Option | Tranche Three        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vesting percentage     33.30%  
Share price (in USD per share) | $ / shares     $ 35.00 $ 35.00
Number of consecutive trading days, threshold | trading_day     30 60
SAR Awards        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Options and rights granted (shares) 200,000 0    
Options cancelled (shares) 200,000      
SAR Awards | Tranche One        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vesting percentage 50.00%      
Number of annual installments | installment 5      
SAR Awards | Tranche Two        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vesting percentage 25.00%      
Share price (in USD per share) | $ / shares $ 25.00      
Number of consecutive trading days, threshold | trading_day 60      
SAR Awards | Tranche Three        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vesting percentage 25.00%      
Share price (in USD per share) | $ / shares $ 35.00      
Number of consecutive trading days, threshold | trading_day 60      
Minimum | Restricted Stock Awards        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vesting period   3 years    
Minimum | PSUs        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Payable at end of period   0.00%    
Maximum | Restricted Stock Awards        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vesting period   5 years    
Maximum | PSUs        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Payable at end of period   150.00%    
2015 Omnibus Incentive Plan        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Shares authorized under plan (shares)   8,315,700    
Shares available for future grant (shares)   5,285,421