Condensed Consolidated Statements Of Operations - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Revenues:
Oil and natural gas	$ 107,256	$ 198,498	$ 213,325	$ 386,705
Contract drilling	55,015	114,278	150,092	220,878
Gas gathering and processing	52,176	92,655	106,129	185,836
Total revenues	214,447	405,431	469,546	793,419
Oil and natural gas:
Operating costs	45,972	44,723	91,183	85,138
Depreciation, depletion, and amortization	68,101	71,245	145,219	130,925
Impairment of oil and natural gas properties (Note 2)	410,536	0	811,129	0
Contract drilling:
Operating costs	36,485	66,494	88,231	130,298
Depreciation	13,265	20,239	28,278	38,634
Impairment of contract drilling equipment (Note 3)	8,314	0	8,314	0
Gas gathering and processing:
Operating costs	40,592	78,648	84,767	159,608
Depreciation and amortization	10,848	10,109	21,542	19,700
General and administrative	9,624	10,600	18,994	20,237
Gain on disposition of assets	(415)	(195)	(960)	(9,621)
Total operating expenses	643,322	301,863	1,296,697	574,919
Income (loss) from operations	(428,875)	103,568	(827,151)	218,500
Other income (expense):
Interest, net	(7,956)	(4,131)	(15,196)	(7,921)
Gain (loss) on derivatives not designated as hedges	(1,919)	(10,709)	4,667	(29,075)
Other	24	(49)	22	71
Total other expense	(9,851)	(14,889)	(10,507)	(36,925)
Income (loss) before income taxes	(438,726)	88,679	(837,658)	181,575
Income tax expense (benefit):
Current	803	8,475	868	18,270
Deferred	(165,140)	25,844	(315,783)	52,000
Total income taxes	(164,337)	34,319	(314,915)	70,270
Net income (loss)	$ (274,389)	$ 54,360	$ (522,743)	$ 111,305
Net income (loss) per common share:
Basic	$ (5.58)	$ 1.12	$ (10.66)	$ 2.29
Diluted	$ (5.58)	$ 1.11	$ (10.66)	$ 2.27