Risk Management and Derivative Instruments - Unrealized and Realized Gains and Losses Related to Derivative Instruments (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Derivative Instruments Gain Loss [Line Items]
Loss (gain) on commodity derivative instruments	$ (3,300)	$ 46,653	$ 108,675	$ 145,139
Interest expense, net	(3,974)	(3,078)	(9,499)	(9,327)
Commodity derivatives [Member]
Derivative Instruments Gain Loss [Line Items]
Loss (gain) on commodity derivative instruments	(3,300)	46,653	108,675	145,139
Interest Rate Swaps [Member]
Derivative Instruments Gain Loss [Line Items]
Interest expense, net	$ (87)	$ 47	$ (930)	$ 3