Derivative Instruments - Additional Information (Detail) $ in Thousands	8 Months Ended	12 Months Ended
	Sep. 12, 2016 USD ($)	Dec. 31, 2017 USD ($) counterparty $ / bbl	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Jan. 31, 2018 bbl $ / bbl
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Derivative assets | $		$ 41,677	$ 27,369
Crude Oil
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Derivative, Swap Type, Average Fixed Price		49.12
Commodity contracts
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Derivative assets | $		$ 41,700
Number Of Derivative Counterparty | counterparty		5
Commodity contracts | Natural Gas
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Third-party quoted forward prices		NYMEX Henry Hub gas
Commodity contracts | Crude Oil
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Third-party quoted forward prices		WTI crude oil
Predecessor [Member]
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Derivatives Settled | $			63,000
Derivatives Settled to Pay Down Revolver | $	$ 51,979		$ 52,000	$ 0
Subsequent Event [Member] | 2018 [Member] | Crude Oil
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Derivative, Nonmonetary Notional Amount | bbl					6,227
Derivative, Swap Type, Average Fixed Price					50.70
Subsequent Event [Member] | 2018 [Member] | Louisiana Light Sweet [Member]
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Derivative, Nonmonetary Notional Amount | bbl					2,500
Derivative, Swap Type, Average Fixed Price					55.18
Subsequent Event [Member] | 2019 [Member] | Crude Oil
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Derivative, Nonmonetary Notional Amount | bbl					4,915
Derivative, Swap Type, Average Fixed Price					52.12
Subsequent Event [Member] | 2019 [Member] | Louisiana Light Sweet [Member]
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Derivative, Nonmonetary Notional Amount | bbl					2,500
Derivative, Swap Type, Average Fixed Price					51.30
Subsequent Event [Member] | 2020 [Member] | Crude Oil
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Derivative, Nonmonetary Notional Amount | bbl					4,000
Derivative, Swap Type, Average Fixed Price					52.67