Quarterly report pursuant to Section 13 or 15(d)

PROPERTY AND EQUIPMENT (Schedule of Property and Equipment) (Details)

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PROPERTY AND EQUIPMENT (Schedule of Property and Equipment) (Details) - USD ($)
$ in Thousands
Sep. 30, 2021
May 17, 2021
Dec. 31, 2020
Property, Plant and Equipment [Abstract]      
Proved oil and natural gas properties $ 1,831,762 $ 1,697,408 $ 9,359,866
Unproved properties 216,357 230,174 1,457,043
Other depreciable property and equipment 4,891   85,530
Land 386   3,008
Total property and equipment 2,053,396 1,934,475 10,905,447
Accumulated DD&A and impairment (212,403) 0 (8,819,178)
Total property and equipment, net $ 1,840,993 $ 1,934,475 $ 2,086,269