DERIVATIVES (Effect Of Derivative Instruments Recognized In Statement Of Operations, Not Designated As Hedging Instruments) (Details) - USD ($) $ in Thousands	4 Months Ended	8 Months Ended	12 Months Ended
	Dec. 31, 2020	Aug. 31, 2020	Dec. 31, 2021
Derivative Instruments, Gain (Loss) [Line Items]
Loss on derivatives	$ (985)	$ (10,704)	$ (97,615)
Cash settlements paid on commodity derivatives	(1,133)	(4,244)	(44,591)
Gain (loss) on derivatives not designated as hedges and hedge ineffectiveness [Member] | Warrant
Derivative Instruments, Gain (Loss) [Line Items]
Loss on change in fair value of warrants	0	0	(18,937)
Commodity Contract | Gain (loss) on derivatives not designated as hedges and hedge ineffectiveness [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Loss on derivatives	(985)	(10,704)	(97,615)
Cash settlements paid on commodity derivatives	(1,133)	(4,244)	(44,591)
Loss on derivatives less cash settlements paid on commodity derivatives	$ 148	$ (6,460)	$ (53,025)