CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	4 Months Ended	8 Months Ended		12 Months Ended
	Dec. 31, 2016	Sep. 12, 2016		Dec. 31, 2015		Dec. 31, 2014
Revenues
Crude oil	$ 33,157	$ 81,377		$ 220,596		$ 420,286
Natural gas liquids	2,707	6,064		16,905		34,552
Natural gas	2,790	6,208		25,479		58,044
Gain (loss) on sales of assets, net	(49)	1,261		41,335		120,769
Other, net	398	(600)		983		3,122
Total revenues	39,003	94,310		305,298		636,773
Operating expenses
Lease operating	5,331	15,626		42,428		48,298
Gathering, processing and transportation	3,043	13,235		23,815		18,294
Production and ad valorem taxes	2,498	3,490		16,282		27,990
General and administrative	5,088	38,945		43,328		49,005
Exploration	0	10,288		12,583		17,063
Depreciation, depletion and amortization	11,652	33,582		334,479		300,299
Impairments	0	0		1,397,424		791,809
Total operating expenses	27,612	115,166		1,870,339		1,252,758
Operating income (loss)	11,391	(20,856)		(1,565,041)		(615,985)
Other income (expense)
Interest expense	(879)	(58,018)		(90,951)		(88,831)
Derivatives	(16,622)	(8,333)		71,247		162,212
Other, net	814	(3,184)		(3,587)		1,334
Reorganization Items	0	1,144,993		0		0
Income (loss) before income taxes	(5,296)	1,054,602		(1,588,332)		(541,270)
Income tax benefit	0	0		5,371		131,678
Net income (loss)	(5,296)	1,054,602		(1,582,961)		(409,592)
Preferred stock dividends	0	(5,972)	[1]	(22,789)	[1]	(17,148)	[1]
Induced conversion of preferred stock	0	0		0		(4,256)
Net loss attributable to common shareholders	$ (5,296)	$ 1,048,630		$ (1,605,750)		$ (430,996)
Net income (loss) per share:
Basic (in dollars per share)	$ (0.35)	$ 11.91		$ (21.81)		$ (6.26)
Diluted (in dollars per share)	$ (0.35)	$ 8.50		$ (21.81)		$ (6.26)
Weighted average shares outstanding – basic	14,992	88,013		73,639		68,887
Weighted average shares outstanding – diluted	14,992	124,087		73,639		68,887

[1] Preferred stock dividends were excluded from diluted earnings per share for the years ended December 31, 2015 and 2014, respectively, as the assumed conversion of the outstanding preferred stock would have been anti-dilutive.