Consolidated Statements of Operations - USD ($) $ in Thousands	1 Months Ended	11 Months Ended	12 Months Ended
	Dec. 31, 2020	Nov. 30, 2020	Dec. 31, 2019
Revenues
Revenues	$ 10,901	$ 105,326	$ 195,152
Expenses
Lease operating	1,418	20,435	31,925
Production and ad valorem taxes	667	6,508	11,169
Depreciation, depletion and amortization	2,093	70,122	88,618
Loss on sale of oil and gas properties	0	1,337	33,508
Impairment of oil and gas properties	0	199,908	48,412
General and administrative	1,505	28,444	16,489
Acquisition costs and other	254	330	1,840
Total expenses	6,398	333,266	236,617
Income (loss) from operations	4,503	(227,940)	(41,465)
Other (expense) income
Interest expense	(1,476)	(35,411)	(43,879)
Unrealized gain on warrants	0	363	691
(Loss) gain on derivative financial instruments	(3,743)	66,699	(30,861)
Reorganization items, net	0	73,471	0
Total other (expense) income, net	(5,219)	105,122	(74,049)
Loss before income taxes	(716)	(122,818)	(115,514)
Income tax benefit	0	4,679	12,495
Net loss	(716)	(118,139)	(103,019)
Preferred stock dividends	0	(4,566)	(8,544)
Undeclared cumulative preferred stock dividends	0	(3,671)	0
Net loss attributable to common stockholders	$ (716)	$ (126,376)	$ (111,563)
Net loss per common share attributable to common stockholders
Basic (in dollars per share)	$ (0.07)	$ (5.00)	$ (4.48)
Diluted (in dollars per share)	$ (0.07)	$ (5.00)	$ (4.48)
Weighted Average Shares Outstanding
Basic (in shares)	10,000,149	25,262,136	24,875,793
Diluted (in shares)	10,000,149	25,262,136	24,875,793
Oil sales
Revenues
Revenues	$ 8,112	$ 80,244	$ 157,873
Natural gas liquid sales
Revenues
Revenues	1,083	9,982	15,668
Natural gas sales
Revenues
Revenues	1,706	15,100	21,611
Gas gathering, processing and transportation
Expenses
Cost of Goods and Services Sold	$ 461	$ 6,182	$ 4,656