Derivative Instruments - Additional Information (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($) bbl Entity $ / bbl	Feb. 21, 2020 USD ($) $ / bbl	Jan. 31, 2020 bbl	Dec. 31, 2018 USD ($)
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Derivative Asset | $	$ 6,881			$ 45,032
Commodity contracts
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Derivative Asset | $	$ 20,000
Number Of Derivative Counterparty | Entity	9
Commodity contracts | Crude Oil
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Derivative, Underlying Basis	WTI
Commodity contracts | Louisiana Light Sweet [Member]
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Derivative, Underlying Basis	LLS
Commodity contracts | MEH [Member]
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Derivative, Underlying Basis	MEH
Subsequent Event [Member] | Costless collar [Domain] | Natural Gas [Member]
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Derivative, Nonmonetary Notional Amount		270,000
Derivative, Floor Price		2.00
Derivative, Cap Price		2.18
Subsequent Event [Member] | Interest Rate Contract [Member]
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Derivative, Notional Amount | $		$ 300,000
Derivative, Average Fixed Interest Rate		136.00%
First Quarter 2020 [Member] | Swap [Member] | Crude Oil
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Derivative, Nonmonetary Notional Amount | bbl	15,648
Derivative, Floor Price	48.00
Derivative, Cap Price	57.10
First Quarter 2020 [Member] | Swap [Member] | MEH [Member]
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Derivative, Nonmonetary Notional Amount | bbl	2,000
First Quarter 2020 [Member] | Subsequent Event [Member] | Swap [Member] | Crude Oil
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Derivative, Nonmonetary Notional Amount | bbl			2,000