Condensed Consolidated Statements Of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Revenues:
Oil and natural gas	$ 188,207	$ 153,609
Contract drilling	106,600	107,528
Gas gathering and processing	93,181	57,395
Total revenues	387,988	318,532
Oil and natural gas:
Operating costs	40,415	43,038
Depreciation, depletion, and amortization	59,680	51,983
Contract drilling:
Operating costs	63,804	66,002
Depreciation	18,395	17,260
Gas gathering and processing:
Operating costs	80,960	49,410
Depreciation and amortization	9,591	7,156
General and administrative	9,637	8,673
(Gain) loss on disposition of assets	(9,426)	84
Total operating expenses	273,056	243,606
Income from operations	114,932	74,926
Other income (expense):
Interest, net	(3,790)	(3,561)
Loss on derivatives not designated as hedges and hedge ineffectiveness, net	(18,366)	(5,924)
Other	120	(66)
Total other expense	(22,036)	(9,551)
Income before income taxes	92,896	65,375
Income tax expense:
Current	9,795	2,517
Deferred	26,156	22,652
Total income taxes	35,951	25,169
Net income	$ 56,945	$ 40,206
Net income per common share:
Basic	$ 1.17	$ 0.84
Diluted	$ 1.17	$ 0.83