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Commitments - Reconciliation of Liability for Plugging and Abandonment Costs (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Commitments and Contingencies Disclosure [Abstract]    
Asset retirement obligation $ 13,660 $ 21,118
Liabilities incurred 724 4
Liabilities settled (1,047) (1,286)
Liabilities divested (52) (5,731)
Accretion expense 642 856
Revisions in estimated liabilities 368 (1,301)
Asset retirement obligation $ 14,295 $ 13,660