CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
	Dec. 31, 2019	Oct. 01, 2019	Dec. 31, 2018	Dec. 31, 2017
Financial Designation, Predecessor and Successor [Fixed List]	Successor	Predecessor	Predecessor	Predecessor
Oil, natural gas and natural gas liquids sales:
Total oil, natural gas and natural gas liquids sales	$ 65,115	$ 158,360	$ 225,529	$ 375,837
Other	467	743	1,080	2,128
Total operating revenues	65,582	159,103	226,609	377,965
Production:
Lease operating	12,804	39,617	25,075	61,743
Workover and other	1,655	5,580	8,574	21,739
Taxes other than income	3,730	9,213	12,787	30,757
Gathering and other	10,812	36,057	60,090	40,783
Restructuring	1,175	15,148	128	7,535
General and administrative	5,111	36,550	62,056	111,351
Depletion, depreciation and accretion	19,996	90,912	77,527	110,207
Full cost ceiling impairment		985,190
(Gain) loss on sale of oil and natural gas properties			7,235	(721,573)
(Gain) loss on sale of Water Assets	(506)	3,618	(119,003)
Total operating expenses	54,777	1,221,885	134,469	(337,458)
Income (loss) from operations	10,805	(1,062,782)	92,140	715,423
Other income (expenses):
Net gain (loss) on derivative contracts	(16,692)	(34,332)	92,625	1,291
Interest expense and other	(1,275)	(37,606)	(43,015)	(71,097)
Reorganization items, net	(3,298)	(117,124)
Gain (loss) on extinguishment of debt				(114,931)
Total other income (expenses)	(21,265)	(189,062)	49,610	(184,737)
Income (loss) before income taxes	(10,460)	(1,251,844)	141,750	530,686
Income tax benefit (provision)		95,791	(95,791)	5,000
Net income (loss)	(10,460)	(1,156,053)	45,959	535,686
Non-cash preferred dividend				(48,007)
Net income (loss) available to common stockholders	$ (10,460)	$ (1,156,053)	$ 45,959	$ 487,679
Net income (loss) per share of common stock:
Basic (in dollars per share)	$ (0.65)	$ (7.27)	$ 0.29	$ 3.67
Diluted (in dollars per share)	$ (0.65)	$ (7.27)	$ 0.29	$ 3.65
Weighted average common shares outstanding:
Basic (in shares)	16,204	158,925	157,011	132,763
Diluted (in shares)	16,204	158,925	157,295	133,576
Oil
Oil, natural gas and natural gas liquids sales:
Total oil, natural gas and natural gas liquids sales	$ 58,325	$ 145,024	$ 199,601	$ 340,674
Oil
Oil, natural gas and natural gas liquids sales:
Total oil, natural gas and natural gas liquids sales	58,325	145,024	199,601	340,674
NGLs
Oil, natural gas and natural gas liquids sales:
Total oil, natural gas and natural gas liquids sales	$ 5,071	$ 13,229	$ 19,137	$ 18,969