Condensed Consolidated Statements Of Operations - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Revenues:
Oil and natural gas	$ 78,854	$ 96,619	$ 206,318	$ 309,944
Contract drilling	25,819	65,022	88,786	215,114
Gas gathering and processing	48,735	50,752	132,793	156,881
Total revenues	153,408	212,393	427,897	681,939
Oil and natural gas:
Operating costs	26,014	38,688	92,691	129,871
Depreciation, depletion, and amortization	27,135	57,159	89,378	202,378
Impairment of oil and natural gas properties (Note 2)	49,443	329,924	161,563	1,141,053
Contract drilling:
Operating costs	19,137	35,486	66,489	123,717
Depreciation	11,318	14,255	34,431	42,533
Impairment of contract drilling equipment (Note 3)	0	0	0	8,314
Gas gathering and processing:
Operating costs	35,738	40,314	99,185	125,081
Depreciation and amortization	11,436	10,976	34,410	32,518
General and administrative	8,932	7,643	26,029	26,637
(Gain) loss on disposition of assets	(154)	7,230	(823)	6,270
Total operating expenses	188,999	541,675	603,353	1,838,372
Loss from operations	(35,591)	(329,282)	(175,456)	(1,156,433)
Other income (expense):
Interest, net	(10,002)	(8,286)	(30,225)	(23,482)
Gain (loss) on derivatives	6,969	8,250	(4,774)	12,917
Other	3	16	(11)	38
Total other income (expense)	(3,030)	(20)	(35,010)	(10,527)
Loss before income taxes	(38,621)	(329,302)	(210,466)	(1,166,960)
Income tax expense (benefit):
Current	0	(2,584)	0	(1,716)
Deferred	(14,599)	(121,437)	(73,159)	(437,220)
Total income taxes	(14,599)	(124,021)	(73,159)	(438,936)
Net loss	$ (24,022)	$ (205,281)	$ (137,307)	$ (728,024)
Net loss per common share:
Basic	$ (0.48)	$ (4.18)	$ (2.75)	$ (14.83)
Diluted	$ (0.48)	$ (4.18)	$ (2.75)	$ (14.83)