CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
REVENUES
Oil and gas sales	$ 160,331	$ 217,485	$ 418,330
Midstream services	5,688	6,122	6,705
Drilling rig services	0	23	28,028
Other operating revenues	123,392	8,742	15,393
Total revenues	289,411	232,372	468,456
COSTS AND EXPENSES
Production	70,920	87,557	105,296
Exploration:
Abandonments and impairments	3,536	6,509	20,647
Seismic and other	925	1,318	2,314
Midstream services	2,173	1,688	2,212
Drilling rig services	3,938	5,238	19,232
Depreciation, depletion and amortization	145,614	162,262	154,356
Impairment of property and equipment	7,593	41,917	12,027
Accretion of asset retirement obligations	4,364	3,945	3,662
General and administrative	22,988	22,788	34,524
Other operating expenses	5,046	12,585	2,547
Total costs and expenses	267,097	345,807	356,817
Operating income (loss)	22,314	(113,435)	111,639
OTHER INCOME (EXPENSE)
Interest expense	(93,693)	(54,422)	(50,907)
Gain on early extinguishment of long-term debt	3,967	0	0
Loss on change in fair value of common stock warrants	(229,980)	0	0
Gain (loss) on commodity derivatives	(20,289)	12,519	4,789
Impairment of investments and other	(4,797)	2,003	3,047
Total other income (expense)	(344,792)	(39,900)	(43,071)
Income (loss) before income taxes	(322,478)	(153,335)	68,568
Income tax (expense) benefit	30,327	55,139	(24,687)
NET INCOME (LOSS)	$ (292,151)	$ (98,196)	$ 43,881
Net income (loss) per common share:
Basic (in dollars per share)	$ (20.87)	$ (8.07)	$ 3.61
Diluted (in dollars per share)	$ (20.87)	$ (8.07)	$ 3.61
Weighted average common shares outstanding:
Basic (in shares)	14,000	12,170	12,167
Diluted (in shares)	14,000	12,170	12,167