Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Revenues:
Net commodity sales	$ 15,880	$ 66,707	$ 64,731	$ 115,326
Sublease revenue	0	1,198	0	2,396
Total revenues	15,880	67,905	64,731	117,722
Costs and expenses:
Lease operating	5,971	13,371	16,059	25,665
Production taxes	823	3,802	3,573	6,682
Depreciation, depletion and amortization	14,821	30,282	37,833	53,997
Impairment of oil and gas assets	384,639	63,593	456,010	113,315
Impairment of other assets	310	6,407	463	6,407
General and administrative	9,488	7,315	17,556	15,628
Liability management	8,047	0	8,047	0
Litigation loss	4,359	0	4,359	0
Subleases	0	403	0	806
Total costs and expenses	428,458	125,173	543,900	222,500
Operating loss	(412,578)	(57,268)	(479,169)	(104,778)
Non-operating income (expense):
Interest expense	(8,047)	(5,571)	(14,683)	(10,135)
Write-off of Senior Note issuance costs	(4,420)	0	(4,420)	0
Derivative (losses) gains	(13,019)	17,734	65,361	(33,282)
(Loss) gain on sale of assets	(261)	491	(159)	490
Other income (expense), net	35	(302)	281	(288)
Net non-operating income (expense)	(25,712)	12,352	46,380	(43,215)
Reorganization items, net	(436)	(313)	(1,020)	(776)
Loss before income taxes	(438,726)	(45,229)	(433,809)	(148,769)
Income tax expense	0	0	0	0
Net loss	$ (438,726)	$ (45,229)	$ (433,809)	$ (148,769)
Loss per share:
Basic (in dollars per share)	$ (9.55)	$ (0.99)	$ (9.45)	$ (3.27)
Diluted (in dollars per share)	$ (9.55)	$ (0.99)	$ (9.45)	$ (3.27)
Weighted average shares used to compute earnings per share:
Basic (in shares)	45,949,797	45,641,797	45,890,041	45,549,518
Diluted (in shares)	45,949,797	45,641,797	45,890,041	45,549,518