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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Property, Equipment and Goodwill (Detail) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Dec. 31, 2021
Increase (Decrease) in Capitalized Exploratory Well Costs that are Pending Determination of Proved Reserves [Roll Forward]          
Beginning capitalized exploratory project costs   $ 9,771,000 $ 6,966,000    
Additions to exploratory project costs pending the determination of proved reserves $ 20,144,000   50,541,000    
Determined to have found proved reserves 0   (27,592,000)    
Ending capitalized exploratory project costs 29,915,000   29,915,000    
Impairment of oil and gas properties 0 $ 0 0 $ 0  
Goodwill $ 335,897,000   $ 335,897,000   $ 335,897,000