Statements of Operations - USD ($) $ in Thousands		12 Months Ended
	Dec. 31, 2013	Dec. 31, 2015	Dec. 31, 2014	Dec. 16, 2013
Successor
Revenues and other:
Oil, natural gas and natural gas liquids sales	$ 50,324	$ 575,031	$ 1,298,402
Electricity sales	1,444	24,544	40,022
Gains (losses) on oil and natural gas derivatives	(5,049)	29,175	78,784
Marketing revenues	399	5,709	10,889
Other revenues	0	7,195	3,192
Total revenues and other	47,118	641,654	1,431,289
Expenses:
Lease operating expenses	15,410	245,155	364,540
Electricity generation expenses	1,257	18,057	28,171
Transportation expenses	2,576	52,160	41,842
Marketing expenses	376	3,809	8,084
General and administrative expenses	20,298	85,993	102,787
Exploration costs	0	0	0
Depreciation, depletion and amortization	10,845	251,371	302,353
Impairment of long-lived assets	0	853,810	253,362
Taxes, other than income taxes	2,130	70,593	97,708
(Gains) losses on sale of assets and other, net	10,208	(1,919)	120,786
Total expenses	63,100	1,579,029	1,319,633
Other income and (expenses):
Interest expense, net of amounts capitalized	(3,963)	(85,818)	(87,948)
Gain on extinguishment of debt	0	11,209	0
Other, net	(28)	(3,261)	(1,043)
Total other income and (expenses)	(3,991)	(77,870)	(88,991)
Income (loss) before income taxes	(19,973)	(1,015,245)	22,665
Income tax expense (benefit)	0	(68)	69
Net income (loss)	$ (19,973)	$ (1,015,177)	$ 22,596
Predecessor
Revenues and other:
Oil, natural gas and natural gas liquids sales				$ 1,103,245
Electricity sales				33,992
Gains (losses) on oil and natural gas derivatives				(34,711)
Marketing revenues				7,827
Other revenues				949
Total revenues and other				1,111,302
Expenses:
Lease operating expenses				295,811
Electricity generation expenses				22,485
Transportation expenses				46,774
Marketing expenses				7,593
General and administrative expenses				122,991
Exploration costs				24,048
Depreciation, depletion and amortization				279,757
Impairment of long-lived assets				0
Taxes, other than income taxes				57,063
(Gains) losses on sale of assets and other, net				(23)
Total expenses				856,499
Other income and (expenses):
Interest expense, net of amounts capitalized				(96,127)
Gain on extinguishment of debt				0
Other, net				51
Total other income and (expenses)				(96,076)
Income (loss) before income taxes				158,727
Income tax expense (benefit)				65,280
Net income (loss)				$ 93,447