Derivative Instruments - Additional Information (Detail) $ in Thousands	6 Months Ended
	Jun. 30, 2020 USD ($) Entity	Dec. 31, 2019 USD ($)
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Derivative assets	$ 83,483	$ 26,835
Derivative Asset	121,422	$ 6,881
Interest Rate Swap
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Derivative assets	$ 7,200
Number of derivative counterparties | Entity	4
Derivative, Notional Amount	$ 300,000
Derivative, Average Fixed Interest Rate	136.00%
Commodity contracts
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Number of derivative counterparties | Entity	7
Derivative Asset	$ 45,100
Commodity contracts | Crude Oil
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Third-party quoted forward prices	NYMEX WTI
Commodity contracts | MEH [Domain]
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Third-party quoted forward prices	MEH
Commodity contracts | Natural Gas [Member]
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Third-party quoted forward prices	NYMEX HH