Quarterly report pursuant to Section 13 or 15(d)

Fair Value of Measurements - Fair Values and Related Carrying Values of Debt Instruments (Detail)

v3.19.1
Fair Value of Measurements - Fair Values and Related Carrying Values of Debt Instruments (Detail) - USD ($)
$ in Thousands
Mar. 31, 2019
Mar. 26, 2019
Dec. 31, 2018
Jan. 22, 2014
Jul. 30, 2013
Successor credit facility          
Carrying And Estimated Fair Value [Line Items]          
Percentage of notes guaranteed by restricted subsidiaries   13.00%      
Predecessor 6.75% senior notes, due July 2022          
Carrying And Estimated Fair Value [Line Items]          
Percentage of notes guaranteed by restricted subsidiaries       6.75%  
Predecessor 7.50% senior notes, due August 2020          
Carrying And Estimated Fair Value [Line Items]          
Percentage of notes guaranteed by restricted subsidiaries         7.50%
Carrying Amount          
Carrying And Estimated Fair Value [Line Items]          
Long term debt Fair value $ 210,000   $ 585,000    
Carrying Amount | Successor credit facility          
Carrying And Estimated Fair Value [Line Items]          
Long term debt Fair value 210,000   0    
Carrying Amount | Predecessor 6.75% senior notes, due July 2022          
Carrying And Estimated Fair Value [Line Items]          
Long term debt Fair value 0   360,000    
Carrying Amount | Predecessor 7.50% senior notes, due August 2020          
Carrying And Estimated Fair Value [Line Items]          
Long term debt Fair value 0   225,000    
Fair Value          
Carrying And Estimated Fair Value [Line Items]          
Long term debt Fair value 210,000   297,000    
Fair Value | Successor credit facility          
Carrying And Estimated Fair Value [Line Items]          
Long term debt Fair value 210,000   0    
Fair Value | Predecessor 6.75% senior notes, due July 2022          
Carrying And Estimated Fair Value [Line Items]          
Long term debt Fair value 0   180,000    
Fair Value | Predecessor 7.50% senior notes, due August 2020          
Carrying And Estimated Fair Value [Line Items]          
Long term debt Fair value $ 0   $ 117,000