Unaudited Condensed Consolidated Statements Of Operations - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Revenues
Revenues	$ 46,027	$ 17,220	$ 85,838	$ 54,250
Expenses
Lease operating	3,933	4,028	8,379	11,667
Production and ad valorem taxes	2,497	1,721	4,917	4,091
Depreciation, depletion and amortization	5,860	16,575	11,169	40,929
Loss on sale and disposal of oil and gas properties	0	1,254	0	1,254
Impairment of oil and gas properties	0	0	0	199,908
General and administrative	5,962	5,981	9,939	8,856
Other (income) expense	(143)	58	(138)	(139)
Total expenses	19,629	30,492	37,328	269,591
Income (loss) from operations	26,398	(13,272)	48,510	(215,341)
Other (expense) income
Interest expense	(4,323)	(10,512)	(8,430)	(22,122)
Change in fair value of warrants	0	0	0	363
(Loss) gain on derivative financial instruments	(39,892)	(21,141)	(64,059)	80,029
Total other (expense) income	(44,215)	(31,653)	(72,489)	58,270
Loss before income taxes	(17,817)	(44,925)	(23,979)	(157,071)
Income tax benefit (expense)	0	4,332	(160)	5,687
Net loss	(17,817)	(40,593)	(24,139)	(151,384)
Preferred stock dividends	0	(2,308)	0	(4,566)
Net loss income attributable to common stockholders	$ (17,817)	$ (42,901)	$ (24,139)	$ (155,950)
Net loss per common share
Basic (in dollars per share)	$ (1.77)	$ (1.70)	$ (2.40)	$ (6.20)
Diluted (in dollars per share)	$ (1.77)	$ (1.70)	$ (2.40)	$ (6.20)
Weighted average common shares outstanding
Basic (in shares)	10,092,980	25,307,714	10,046,821	25,154,151
Diluted (in shares)	10,092,980	25,307,714	10,046,821	25,154,151
Oil sales
Revenues
Revenues	$ 36,369	$ 11,976	$ 64,234	$ 41,986
Natural gas liquid sales
Revenues
Revenues	4,940	1,762	9,239	4,362
Natural gas sales
Revenues
Revenues	4,718	3,482	12,365	7,902
Gas gathering, processing and transportation
Expenses
Cost of goods and services sold	$ 1,520	$ 875	$ 3,062	$ 3,025