Fair Value of Derivative Instruments on Condensed Consolidated Balance Sheets (Detail) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Derivatives, Fair Value [Line Items]
Commodity derivative assets – current	$ 11,478	$ 75,506
Derivative liabilities	50,372	85,106
Derivative assets	2,092	25,449
Derivative liabilities	23,815	28,434
Total financial assets	13,570	100,955
Derivative liabilities	74,187	113,540
Interest Rate Swap
Derivatives, Fair Value [Line Items]
Derivative liabilities	1,500
Commodity contracts
Derivatives, Fair Value [Line Items]
Derivative liabilities	59,100
Derivative assets/liabilities - current \| Interest Rate Swap
Derivatives, Fair Value [Line Items]
Commodity derivative assets – current	0	0
Derivative liabilities	1,480	3,655
Derivative assets/liabilities - current \| Commodity contracts
Derivatives, Fair Value [Line Items]
Commodity derivative assets – current	11,478	75,506
Derivative liabilities	48,892	81,451
Derivative assets/liabilities - noncurrent \| Interest Rate Swap
Derivatives, Fair Value [Line Items]
Derivative assets	0	0
Derivative liabilities	0	1,645
Derivative assets/liabilities - noncurrent \| Commodity contracts
Derivatives, Fair Value [Line Items]
Derivative assets	2,092	25,449
Derivative liabilities	$ 23,815	$ 26,789

Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset.

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