Impact of Derivative Activities on Condensed Consolidated Statements of Income (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Interest Rate Swap losses recognized in the consolidated statements of operations	$ (2)	$ (7,510)	$ 0
Gain (Loss) on Commodity Derivative Instruments	(136,997)	95,932	(68,131)
Derivatives	(136,999)	88,422	(68,131)
Interest rate cash settlements recognized in the consolidated statements of cash flows	(3,822)	(2,210)	0
Commodity cash settlements and premiums received (paid) recognized in the consolidated statements of cash flows	(77,099)	80,297	(4,136)
Commodity cash settlements paid for acquired derivatives recognized in the consolidated statements of cash flows	(49,554)	0	0
Commodity cash settlements and premiums received (paid) recognized in the consolidated statements of cash flows	$ (130,475)	$ 78,087	$ (4,136)