Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements (Details)

v3.19.3.a.u2
Fair Value Measurements (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Sep. 30, 2019
Mar. 26, 2019
Dec. 31, 2018
Jan. 22, 2014
Jul. 30, 2013
Successor term loan, due March 2024            
Carrying And Estimated Fair Value [Line Items]            
Fixed interest rate     13.00%      
Predecessor 6.75% senior notes, due July 2022            
Carrying And Estimated Fair Value [Line Items]            
Fixed interest rate 6.75% 6.75%     6.75%  
Predecessor 7.50% senior notes, due August 2020            
Carrying And Estimated Fair Value [Line Items]            
Fixed interest rate 7.50% 7.50%       7.50%
Carrying Amount            
Carrying And Estimated Fair Value [Line Items]            
Long-term debt $ 177,937     $ 585,000    
Carrying Amount | Successor term loan, due March 2024            
Carrying And Estimated Fair Value [Line Items]            
Long-term debt 177,937     0    
Carrying Amount | Predecessor 6.75% senior notes, due July 2022            
Carrying And Estimated Fair Value [Line Items]            
Long-term debt 0     360,000    
Carrying Amount | Predecessor 7.50% senior notes, due August 2020            
Carrying And Estimated Fair Value [Line Items]            
Long-term debt 0     225,000    
Fair Value            
Carrying And Estimated Fair Value [Line Items]            
Long-term debt 194,712     297,000    
Fair Value | Successor term loan, due March 2024            
Carrying And Estimated Fair Value [Line Items]            
Long-term debt 194,712     0    
Fair Value | Predecessor 6.75% senior notes, due July 2022            
Carrying And Estimated Fair Value [Line Items]            
Long-term debt 0     180,000    
Fair Value | Predecessor 7.50% senior notes, due August 2020            
Carrying And Estimated Fair Value [Line Items]            
Long-term debt $ 0     $ 117,000