Industry Segment Information (Tables)

6 Months Ended

Jun. 30, 2014

Segment Reporting [Abstract]

Industry segment information

The following table provides certain information about the operations of each of our segments:

	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2014			2013			2014			2013
	(In thousands)
Revenues:
Oil and natural gas	$	198,498		$	164,799		$	386,705		$	318,408
Contract drilling	135,782			118,660			260,040			238,013
Elimination of inter-segment revenue	(21,504		)	(13,655		)	(39,162		)	(25,480		)
Contract drilling net of inter-segment revenue	114,278			105,005			220,878			212,533
Gas gathering and processing	116,354			92,910			236,714			173,066
Elimination of inter-segment revenue	(23,699		)	(22,293		)	(50,878		)	(45,054		)
Gas gathering and processing net of inter-segment revenue	92,655			70,617			185,836			128,012
Total revenues	$	405,431		$	340,421		$	793,419		$	658,953
Operating income:
Oil and natural gas	$	82,530		$	64,470		$	170,642		$	123,058
Contract drilling	27,545			23,507			51,946			47,773
Gas gathering and processing	3,898			2,846			6,528			3,675
Total operating income (1)	113,973			90,823			229,116			174,506
General and administrative	(10,600		)	(9,679		)	(20,237		)	(18,352		)
Gain on disposition of assets	195			3,483			9,621			3,399
Gain (loss) on derivatives not designated as hedges and hedge ineffectiveness, net	(10,709		)	16,344			(29,075		)	10,420
Interest expense, net	(4,131		)	(4,591		)	(7,921		)	(8,152		)
Other	(49		)	(91		)	71			(157		)
Income before income taxes	$	88,679		$	96,289		$	181,575		$	161,664

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(1) Operating income is total operating revenues less operating expenses, depreciation, depletion, amortization, and impairment and does not include general corporate expenses, gain on disposition of assets, gain (loss) on non-designated hedges and hedge ineffectiveness, interest expense, other income (loss), or income taxes.