Annual report pursuant to Section 13 and 15(d)

Stock-Based Compensation - Additional Information (Details)

v3.19.3.a.u2
Stock-Based Compensation - Additional Information (Details) - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended
Dec. 31, 2019
Mar. 26, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Award vesting period 3 years  
Unrecognized compensation cost related to unamortized units $ 1.3  
Successor unvested restricted stock units    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Unrecognized compensation cost related to unamortized units $ 4.1  
Weighted-average vesting period 27 months  
Time-based phantom stock units    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of shares of common stock represented by each award 1  
Performance cash units    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Award vesting period 3 years  
Performance period 3 years  
Nominal value (in dollars per share) $ 100.0  
Maximum number of units granted which may be earned if performance at the maximum level is achieved (as a percent) 200.00%  
Performance-based phantom stock units    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Award vesting period 3 years  
Performance period 3 years  
Maximum number of units granted which may be earned if performance at the maximum level is achieved (as a percent) 250.00%  
Successor outstanding stock options    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Award vesting period 3 years  
Expiration period 10 years  
Weighted-average vesting period 27 months  
Predecessor Stock Plan    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of shares authorized plan 1,120,000  
Successor Stock Plan    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of shares authorized plan   1,487,905
Number of shares remaining under plan 841,408  
Minimum | Successor unvested restricted stock units    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Award vesting period 1 year  
Minimum | Time-based phantom stock units    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Award vesting period 1 year  
Maximum | Successor unvested restricted stock units    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Award vesting period 3 years  
Maximum | Time-based phantom stock units    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Award vesting period 3 years