Derivative Instruments - Additional Information (Detail) $ in Thousands	1 Months Ended	3 Months Ended
	Apr. 30, 2016 USD ($)	Mar. 31, 2016 USD ($) Entity	Mar. 31, 2015 USD ($)	Apr. 12, 2016
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Number of derivative counterparties		2
Derivatives Settled to Pay Down Revolver		$ 22,860	$ 0
Commodity contracts
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Derivative assets		$ 49,000
Number of derivative counterparties | Entity		3
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		West Texas Intermediate crude oil
Subsequent Event [Member]
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Number of derivative counterparties				2
Derivatives Settled, Subsequent Event	$ 22,600
Derivatives Settled to Pay Down Revolver, Subsequent Event	$ 16,600