Derivative Financial Instruments - Schedule of Notional Amounts and Estimated Fair Values of Commodity Derivative Positions (Detail) bbl in Thousands, MMBTU in Thousands, $ in Thousands	Sep. 30, 2022 USD ($) bbl MMBTU	Dec. 31, 2021 USD ($) MMBTU bbl
Financial Institution Counterparties [Member] | Oil Commodity Derivative [Member]
Derivative Instruments [Line Items]
Oil/Natural Gas Derivative Assets, Notional Amount | bbl	4,467	4,809
Oil/Natural Gas Derivative Liabilities, Notional Amount | bbl	6,987	7,032
Oil/Natural Gas Derivative Assets, Estimated Fair Value	$ 45,381	$ 14,721
Oil/Natural Gas Derivative Liabilities, Estimated Fair Value	$ (55,645)	$ (73,594)
Financial Institution Counterparties [Member] | Natural Gas Commodity Derivative [Member]
Derivative Instruments [Line Items]
Oil/Natural Gas Derivative Assets, Notional Amount | MMBTU	13,406	15,947
Oil/Natural Gas Derivative Liabilities, Notional Amount | MMBTU	20,489	29,446
Oil/Natural Gas Derivative Assets, Estimated Fair Value	$ 4,033	$ 4,143
Oil/Natural Gas Derivative Liabilities, Estimated Fair Value	$ (40,049)	$ (21,249)
Customer Counterparties [Member] | Oil Commodity Derivative [Member]
Derivative Instruments [Line Items]
Oil/Natural Gas Derivative Assets, Notional Amount | bbl	7,006	7,046
Oil/Natural Gas Derivative Liabilities, Notional Amount | bbl	4,448	4,796
Oil/Natural Gas Derivative Assets, Estimated Fair Value	$ 56,366	$ 74,437
Oil/Natural Gas Derivative Liabilities, Estimated Fair Value	$ (44,674)	$ (14,294)
Customer Counterparties [Member] | Natural Gas Commodity Derivative [Member]
Derivative Instruments [Line Items]
Oil/Natural Gas Derivative Assets, Notional Amount | MMBTU	20,489	29,446
Oil/Natural Gas Derivative Liabilities, Notional Amount | MMBTU	13,406	15,947
Oil/Natural Gas Derivative Assets, Estimated Fair Value	$ 40,153	$ 21,456
Oil/Natural Gas Derivative Liabilities, Estimated Fair Value	$ (4,017)	$ (4,124)