Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		4 Months Ended	5 Months Ended	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Apr. 22, 2016	Sep. 30, 2016	Sep. 30, 2017
Successor [Member]
Revenues:
Oil and gas sales	$ 49,019	$ 47,959		$ 78,540	$ 137,216
Costs and Expenses:
General and administrative, net	6,031	11,691		15,919	22,676
Depreciation, depletion, and amortization	11,832	13,287		26,621	32,375
Accretion of asset retirement obligation	582	1,099		1,931	1,722
Lease operating cost	5,831	9,481		17,262	16,380
Transportation and gas processing	4,921	4,883		9,069	14,067
Severance and other taxes	2,479	2,683		4,547	6,377
Write-down of oil and gas properties	0			133,496	0
Total Operating Expenses	31,676	43,124		208,845	93,597
Operating Income (Loss)	17,343	4,835		(130,305)	43,619
Net gain (loss) on commodity derivatives	(1,603)	2,603		(7,308)	14,465
Interest (expense), net	(2,868)	(5,880)		(10,137)	(11,117)
Reorganization items, net	0	(1,193)		(1,469)	0
Other income (expense), net	12	29		12	(133)
Income (Loss) Before Income Taxes	12,884	394		(149,207)	46,834
Provision (Benefit) for Income Taxes	0	0		0	0
Net Income (Loss)	$ 12,884	$ 394		$ (149,207)	$ 46,834
Per Share Amounts-
Earnings Per Share (Basic)	$ 1.12	$ 0.04		$ (14.92)	$ 4.10
Earnings Per Share (Diluted)	$ 1.12	$ 0.04		$ (14.92)	$ 4.08
Weighted Average Shares Outstanding - Basic	11,531	10,000		10,000	11,417
Weighted Average Shares Outstanding - Diluted	11,545	10,361		10,000	11,479
Predecessor [Member]
Revenues:
Oil and gas sales			$ 43,027
Costs and Expenses:
General and administrative, net			9,245
Depreciation, depletion, and amortization			20,439
Accretion of asset retirement obligation			1,610
Lease operating cost			14,933
Transportation and gas processing			6,090
Severance and other taxes			3,917
Write-down of oil and gas properties			77,732
Total Operating Expenses			133,966
Operating Income (Loss)			(90,939)
Net gain (loss) on commodity derivatives			0
Interest (expense), net			(13,347)
Reorganization items, net			956,142
Other income (expense), net			(245)
Income (Loss) Before Income Taxes			851,611
Provision (Benefit) for Income Taxes			0
Net Income (Loss)			$ 851,611
Per Share Amounts-
Earnings Per Share (Basic)			$ 19.06
Earnings Per Share (Diluted)			$ 18.64
Weighted Average Shares Outstanding - Basic			44,692
Weighted Average Shares Outstanding - Diluted			45,697