Business Segment Information (Tables)

9 Months Ended

Sep. 30, 2013

Segment Reporting [Abstract]

Summarized Financial Information of Segments

Summarized financial information for the Company’s segments is shown in the following table:

	Exploration and Production			Well Services			Midstream Services			Consolidated
	(In thousands)
Three Months Ended September 30, 2013:
Revenues	$	286,952		$	57,116		$	7,597		$	351,665
Inter-segment revenues	—			(40,026		)	(6,141		)	(46,167		)
Total revenues	286,952			17,090			1,456			305,498
Operating income	140,765			5,870			4,227			150,862
Other income (expense)	(62,628		)	(20		)	—			(62,648		)
Income before income taxes	78,137			5,850			4,227			88,214
Three Months Ended September 30, 2012:
Revenues	$	178,748		$	37,160		$	—		$	215,908
Inter-segment revenues	—			(31,197		)	—			(31,197		)
Total revenues	178,748			5,963			—			184,711
Operating income (loss)	89,279			(17,241		)	—			72,038
Other income (expense)	(42,273		)	—			—			(42,273		)
Income (loss) before income taxes	47,006			(17,241		)	—			29,765
Nine Months Ended September 30, 2013:
Revenues	$	770,445		$	124,266		$	19,451		$	914,162
Inter-segment revenues	—			(90,000		)	(15,778		)	(105,778		)
Total revenues	770,445			34,266			3,673			808,384
Operating income	359,121			11,744			11,400			382,265
Other income (expense)	(106,159		)	(11		)	—			(106,170		)
Income before income taxes	252,962			11,733			11,400			276,095
Nine Months Ended September 30, 2012:
Revenues	$	461,857		$	54,909		$	—		$	516,766
Inter-segment revenues	—			(44,425		)	—			(44,425		)
Total revenues	461,857			10,484			—			472,341
Operating income	190,257			116			—			190,373
Other income (expense)	(12,863		)	—			—			(12,863		)
Income before income taxes	177,394			116			—			177,510
Total Assets:
As of September 30, 2013	$	3,916,554		$	68,869		$	97,960		$	4,083,383
As of December 31, 2012	2,475,820			52,974			—			2,528,794