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Stock-Based Compensation - Additional Information (Details)
1 Months Ended 3 Months Ended
Feb. 14, 2019
shares
Jun. 30, 2018
shares
Mar. 31, 2020
USD ($)
performance_period
shares
Mar. 31, 2019
USD ($)
shares
Dec. 31, 2019
USD ($)
Jan. 09, 2019
USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Stock options granted (in shares) | shares     635,932 1,307,015    
Stock-based compensation expense (reduction to expense)     $ 6,000,000.0 $ 3,400,000    
Authorized amount under share repurchase program           $ 200,000,000.0
Phantom share units (PSUs)            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Stock-based compensation expense (reduction to expense)     100,000 1,100,000    
Liability for cash-settled awards     800,000   $ 3,300,000  
Unrecognized compensation cost, other awards     $ 1,900,000      
Unamortized compensation costs, weighted average period of recognition     1 year 10 months 24 days      
Amounts paid on cash-settled awards     $ 2,800,000 2,400,000    
Phantom share units (PSUs) | Minimum            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Vesting period     3 years      
Phantom share units (PSUs) | Maximum            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Vesting period     4 years      
Stock appreciation rights (SARs)            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Stock-based compensation expense (reduction to expense)     $ 5,500,000 3,000,000.0    
Vesting period     4 years      
Liability for cash-settled awards     $ 1,900,000   $ 14,400,000  
Unrecognized compensation cost, other awards     $ 5,400,000      
Unamortized compensation costs, weighted average period of recognition     3 years 2 months 12 days      
Amounts paid on cash-settled awards     $ 6,600,000 $ 1,200,000    
2018 Long Term Incentive Compensation Plan            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Common stock available for awards, up to (in shares) | shares   12,700,000        
Common stock counted against the maximum shares available for grant for each share awarded under the plan (in shares)   1        
Shares available for future grants (in shares) | shares     7,547,999      
2018 Long Term Incentive Compensation Plan | Restricted stock            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Common stock counted against the maximum shares available for grant for each share awarded under the plan (in shares)   2.30        
Performance Share Program | Performance shares            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Awards granted (in shares) | shares 107,297          
Award period     3 years      
Service period     1 year      
Number of annual award performance periods | performance_period     3      
Vesting period     3 years      
Performance Share Program | Performance shares | Minimum            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Percentage of award which can potentially be earned     50.00%      
Performance Share Program | Performance shares | Maximum            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Percentage of award which can potentially be earned     150.00%