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FRESH START ACCOUNTING (Oil and Gas Properties Schedule) (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Sep. 01, 2020
Aug. 31, 2020
Proved properties $ 225,014 $ 238,581 $ 238,284 $ 6,539,816
Unproved properties not being amortized 422 1,591 0 30,205
Property, plant and equipment, gross, total 579,423 600,989 597,747  
Less accumulated depletion, amortization, and impairment (128,880) (54,189) 0  
Net property and equipment $ 450,543 $ 546,800 597,747  
Oil and Natural Gas        
Property, plant and equipment, gross, total     238,284 6,570,021
Less accumulated depletion, amortization, and impairment     0 (6,305,113)
Net property and equipment     $ 238,284 $ 264,908