Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Revenues
Oil, natural gas liquids and natural gas	$ 334,984	$ 462,363	$ 354,223
Other	2,227	2,360	755
Total revenues	337,211	464,723	354,978
Operatings expenses
Lease operating	88,855	51,262	44,620
Marketing, gathering, transportation and other	33,901	23,621	17,567
Production and ad valorem taxes	17,592	18,161	17,824
General and administrative	42,687	30,373	27,469
Depletion, depreciation and amortization	182,417	189,516	137,068
Accretion	1,930	958	952
Impairments	1,576,728	423,092	1,125
Other operating expenses	24,431	25,583	(858)
Total operating expenses	1,968,541	762,566	245,767
Other income (expenses)
Interest expense, net of capitalized interest (contractual interest expense equals $193,495 year ended December 31, 2015)	(180,285)	(115,559)	(99,448)
Gain on derivative instruments	33,897	121,669	814
Total other income (expenses)	(146,388)	6,110	(98,634)
Reorganization items, net	(458,838)
Net income (loss) before income taxes	(2,236,556)	(291,733)	10,577
Income tax expense	3,087	34,987
Net income (loss)	$ (2,239,643)	$ (326,720)	$ 10,577
Net income (loss) per share:
Basic (in dollars per share)	$ (11.17)	$ (2.67)	$ 0.09
Diluted (in dollars per share)	$ (11.17)	$ (2.67)	$ 0.09
Weighted average shares outstanding – basic (in shares)	200,513	122,237	118,863
Weighted average shares outstanding – diluted (in shares)	200,513	122,237	118,863