Annual report pursuant to Section 13 and 15(d)

Derivative Instruments - Additional Information (Detail)

v3.10.0.1
Derivative Instruments - Additional Information (Detail)
$ in Thousands
8 Months Ended 12 Months Ended
Sep. 12, 2016
USD ($)
Dec. 31, 2018
USD ($)
Entity
Dec. 31, 2017
USD ($)
Derivative Instruments and Hedging Activities Disclosure [Line Items]      
Derivative Asset   $ 45,032 $ 0
Predecessor [Member]      
Derivative Instruments and Hedging Activities Disclosure [Line Items]      
Derivatives Settled $ 63,000    
Derivatives settled to reduce outstanding debt $ 51,979    
Commodity contracts      
Derivative Instruments and Hedging Activities Disclosure [Line Items]      
Derivative Asset   $ 44,000  
Number Of Derivative Counterparty | Entity   8  
Commodity contracts | Crude Oil      
Derivative Instruments and Hedging Activities Disclosure [Line Items]      
Third-party quoted forward prices   WTI crude oil  
Commodity contracts | Louisiana Light Sweet [Member]      
Derivative Instruments and Hedging Activities Disclosure [Line Items]      
Third-party quoted forward prices   LLS