Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	1 Months Ended	2 Months Ended	3 Months Ended	4 Months Ended	6 Months Ended
	Apr. 22, 2016	Jun. 30, 2016	Jun. 30, 2017	Apr. 22, 2016	Jun. 30, 2017
Successor [Member]
Revenues:
Oil and gas sales		$ 30,581	$ 45,782		$ 88,194
Costs and Expenses:
General and administrative, net		4,228	6,811		16,645
Depreciation, depletion, and amortization		13,334	10,828		20,543
Accretion of asset retirement obligation		832	576		1,140
Lease operating cost		7,781	4,776		10,549
Transportation and gas processing		4,186	4,761		9,146
Severance and other taxes		1,864	2,280		3,898
Write-down of oil and gas properties		133,496	0		0
Total Operating Expenses		165,721	30,032		61,921
Operating Income (Loss)		(135,140)	15,750		26,273
Net gain (loss) on commodity derivatives		(9,912)	5,132		16,068
Interest (expense), net		(4,257)	(4,642)		(8,249)
Reorganization items, net		(276)	0		0
Other income (expense), net		(16)	1		(141)
Income (Loss) Before Income Taxes		(149,601)	16,241		33,951
Provision (Benefit) for Income Taxes		0	0		0
Net Income (Loss)		$ (149,601)	$ 16,241		$ 33,951
Per Share Amounts-
Earnings Per Share (Basic)		$ (14.96)	$ 1.41		$ 2.99
Earnings Per Share (Diluted)		$ (14.96)	$ 1.41		$ 2.97
Weighted Average Shares Outstanding - Basic		10,000	11,487		11,360
Weighted Average Shares Outstanding - Diluted		10,000	11,554		11,445
Predecessor [Member]
Revenues:
Oil and gas sales	$ 8,660			$ 43,027
Costs and Expenses:
General and administrative, net	1,127			9,245
Depreciation, depletion, and amortization	3,194			20,439
Accretion of asset retirement obligation	319			1,610
Lease operating cost	2,627			14,933
Transportation and gas processing	1,035			6,090
Severance and other taxes	1,585			3,917
Write-down of oil and gas properties	0			77,732
Total Operating Expenses	9,887			133,966
Operating Income (Loss)	(1,227)			(90,939)
Net gain (loss) on commodity derivatives	0			0
Interest (expense), net	(5,281)			(13,347)
Reorganization items, net	966,571			956,142
Other income (expense), net	(150)			(245)
Income (Loss) Before Income Taxes	959,913			851,611
Provision (Benefit) for Income Taxes	0			0
Net Income (Loss)	$ 959,913			$ 851,611
Per Share Amounts-
Earnings Per Share (Basic)	$ 21.45			$ 19.06
Earnings Per Share (Diluted)	$ 21.03			$ 18.64
Weighted Average Shares Outstanding - Basic	44,754			44,692
Weighted Average Shares Outstanding - Diluted	45,648			45,697