UNAUDITED CONDENSED STATEMENTS OF CONSOLIDATED OPERATIONS - USD ($) shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Revenues:
Total revenues	$ 72,959,000	$ 85,522,000	$ 197,646,000	$ 264,442,000
Costs and expenses:
Lease operating expense	32,977,000	27,505,000	88,179,000	84,575,000
Exploration	3,000	9,000	24,000	3,031,000
Taxes other than income	5,135,000	4,717,000	13,008,000	15,289,000
Depreciation, depletion and amortization	15,617,000	13,355,000	39,696,000	39,932,000
General and administrative expense	27,034,000	8,219,000	46,908,000	35,739,000
Accretion of asset retirement obligations	1,428,000	1,272,000	4,071,000	4,419,000
(Gain) loss on commodity derivative instruments	(28,725,000)	21,110,000	(19,231,000)	67,218,000
(Gain) loss on sale of properties	0	(707,000)	0	1,439,000
Other, net	224,000	639,000	401,000	519,000
Total costs and expenses	58,152,000	82,316,000	186,563,000	269,933,000
Operating income (loss)	14,807,000	3,206,000	11,083,000	(5,491,000)
Other income (expense):
Interest expense, net	(5,276,000)	(5,336,000)	(13,787,000)	(17,395,000)
Loss on lease	4,237,000	0	4,237,000	0
Other income (expense)	(104,000)	(2,000)	(104,000)	0
Total other income (expense)	(9,617,000)	(5,338,000)	(18,128,000)	(17,395,000)
Income (loss) before reorganization items, net and income taxes	5,190,000	(2,132,000)	(7,045,000)	(22,886,000)
Reorganization items, net	(33,000)	(466,000)	(684,000)	(1,752,000)
Income tax benefit (expense)	0	0	50,000	0
Net income (loss)	5,157,000	(2,598,000)	(7,679,000)	(24,638,000)
Net (income) loss allocated to participating restricted stockholders	(128,000)	0	0	0
Net income (loss) attributable to common stockholders	$ 5,029,000	$ (2,598,000)	$ (7,679,000)	$ (24,638,000)
Earnings per share: (See Note 10)
Basic and diluted earnings per share	$ 0.15	$ (0.10)	$ (0.29)	$ (0.98)
Weighted average common shares outstanding:
Basic and diluted	33,707	25,073	26,093	25,037
Oil and Natural Gas Sales [Member]
Revenues:
Total revenues	$ 72,426,000	$ 85,446,000	$ 196,978,000	$ 264,187,000
Other Revenues [Member]
Revenues:
Total revenues	533,000	76,000	668,000	255,000
Gathering, Processing and Transportation [Member]
Costs and expenses:
Gathering, processing and transportation	$ 4,459,000	$ 6,197,000	$ 13,507,000	$ 17,772,000