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PROPERTY AND EQUIPMENT (Depreciation and Depletion) (Details) - USD ($)
$ in Thousands
1 Months Ended 11 Months Ended 12 Months Ended
Feb. 08, 2018
Dec. 31, 2018
Dec. 31, 2019
Property, Plant and Equipment [Abstract]      
Oil and gas properties depletion $ 11,021 $ 129,579 $ 118,003
Midstream tangible asset depreciation 0 8,235 11,663
Other property and equipment depreciation 609 3,236 1,646
Total depletion and depreciation $ 11,630 $ 141,050 $ 131,312