Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Revenues:
Oil and gas sales	$ 17,094	$ 26,872	$ 50,238	$ 92,873
Expenses:
Lease operating expenses	6,857	10,070	21,898	32,163
Production taxes	319	399	609	2,303
Depreciation, depletion and amortization	6,030	13,687	23,361	52,686
Ceiling test write-down	8,665	40,212	40,304	214,618
General and administrative	8,827	4,686	21,297	16,544
Accretion of asset retirement obligation	670	825	1,896	2,507
Interest expense	7,737	8,526	22,497	24,996
Expenses	39,105	78,405	131,862	345,817
Other income (expense):
Gain on sale of oil and gas properties	0	828	0	22,359
Other income (expense)	(28)	88	(355)	285
Other Income	(28)	916	(355)	22,644
Loss from operations	(22,039)	(50,617)	(81,979)	(230,300)
Income tax expense (benefit)	(18)	6	543	1,079
Net loss	(22,021)	(50,623)	(82,522)	(231,379)
Preferred stock dividend	1,285	1,287	4,064	3,854
Loss available to common stockholders	$ (23,306)	$ (51,910)	$ (86,586)	$ (235,233)
Basic
Net income (loss) per share (in usd per share)	$ (1.31)	$ (3.19)	$ (4.97)	$ (14.50)
Diluted
Net income (loss) per share (in usd per share)	$ (1.31)	$ (3.19)	$ (4.97)	$ (14.50)
Weighted average number of common shares:
Basic (shares)	17,736	16,259	17,412	16,225
Diluted (shares)	17,736	16,259	17,412	16,225