CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Operating Revenues:
Total operating revenues		$ 67,347	$ 121,282	$ 190,213	$ 330,846
Operating Expenses:
Production tax expense		(1,074)	7,868	(2,133)	20,666
Exploration expense		74	56	126	93
Impairment and abandonment expense		2,813	1,170	1,269,049	2,487
(Gain) loss on sale of properties		18	0	4,797	2,901
Depreciation, depletion and amortization		25,522	84,948	125,355	230,170
Unused commitments		4,985	4,418	13,821	13,239
General and administrative expense		12,891	11,048	35,996	36,109
Merger transaction expense		0	2,078	0	4,492
Other operating expenses, net		(38)	230	(540)	210
Total operating expenses		55,813	121,812	1,485,914	345,877
Operating Income (Loss)		11,534	(530)	(1,295,701)	(15,031)
Other Income and Expense:
Interest and other income (expense)		171	94	235	562
Interest expense		(14,346)	(15,167)	(44,117)	(43,227)
Commodity derivative gain (loss)		(13,746)	31,047	144,649	(54,600)
Total other income and expense		(27,921)	15,974	100,767	(97,265)
Income (Loss) before Income Taxes		(16,387)	15,444	(1,194,934)	(112,296)
(Provision for) Benefit from Income Taxes		582	(4,330)	95,862	25,271
Net Income (Loss)		$ (15,805)	$ 11,114	$ (1,099,072)	$ (87,025)
Net Income (Loss) Per Common Share, Basic (in dollars per share)	[1]	$ (3.72)	$ 2.64	$ (259.52)	$ (20.69)
Net Income (Loss) Per Common Share, Diluted (in dollars per share)	[1]	$ (3.72)	$ 2.63	$ (259.52)	$ (20.69)
Weighted Average Common Shares Outstanding, Basic (in shares)	[1]	4,246,047	4,210,993	4,235,432	4,205,768
Weighted Average Common Shares Outstanding, Diluted (in shares)	[1]	4,246,047	4,218,745	4,235,432	4,205,768
Oil, gas and NGL production
Operating Revenues:
Production and other revenues		$ 67,305	$ 121,281	$ 190,171	$ 330,472
Other operating revenues, net
Operating Revenues:
Production and other revenues		42	1	42	374
Lease operating expense
Operating Expenses:
Cost of goods and services		5,305	8,385	25,460	30,434
Gathering, transportation and processing expense
Operating Expenses:
Cost of goods and services		$ 5,317	$ 1,611	$ 13,983	$ 5,076

[1] All share and per share information has been retroactively adjusted to reflect a 1-for-50 reverse stock split effective October 30, 2020. See Note 12 for additional information.