SUPPLEMENTAL OIL AND GAS DISCLOSURES (Unaudited) (Results of Operations) (Details) - USD ($) $ in Thousands	1 Months Ended	11 Months Ended	12 Months Ended
	Feb. 08, 2018	Dec. 31, 2018	Dec. 31, 2019
Supplemental Oil and Natural Gas Disclosures [Abstract]
Operating revenue	$ 40,136	$ 414,507	$ 423,576
Production expense	30,743	247,748	232,212
Depreciation, depletion and amortization	11,670	133,554	120,617
Exploration expense	7,003	34,085	52,354
Impairment expense	0	2,033,712	556,427
Income tax expense (benefit)	0	4	0
Results of operations	$ (9,280)	$ (2,034,596)	$ (538,034)