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SUPPLEMENTAL INFORMATION ON OIL AND GAS EXPLORATION AND PRODUCTION ACTIVITIES (UNAUDITED) - Results of Operations for Producing Activities (Details)
$ in Thousands
3 Months Ended 5 Months Ended 7 Months Ended 12 Months Ended
Jun. 30, 2021
USD ($)
May 17, 2021
USD ($)
usd_per_mcf
Dec. 31, 2021
USD ($)
usd_per_mcf
Dec. 31, 2020
USD ($)
usd_per_mcf
Dec. 31, 2019
USD ($)
usd_per_mcf
Extractive Industries [Abstract]          
Revenues   $ 410,276 $ 1,092,584 $ 801,251 $ 1,354,766
Production costs   (192,959) (274,428) (537,609) (620,412)
Depletion   (60,831) (159,518) (229,702) (539,379)
Impairment $ (117,800) 0 (117,813) (1,357,099) (2,039,770)
Income tax benefit (expense)   7,968 39 (7,290) 7,563
Results of operations from producing activities   $ 164,454 $ 540,864 $ (1,330,449) $ (1,837,232)
Depletion per Mcf of gas equivalent (usd per Mcfe) | usd_per_mcf   0.45 0.69 0.61 1.08