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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

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- Definition Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.14) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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