Business Segment Information (Tables)

6 Months Ended

Jun. 30, 2012

Business Segment Information [Abstract]

Schedule of Reportable Segments Financial Information

	Completion and Remedial Services			Fluid Services			Well Servicing			Contract Drilling			Corporate and Other		Total
Three Months Ended June 30, 2012 (Unaudited)
Operating revenues	$	156,560		$	90,592		$	98,723		$	15,643		$	—	$	361,518
Direct operating costs		(93,098	)		(58,221	)		(71,864	)		(9,831	)		—	$	(233,014	)
Segment profits	$	63,462		$	32,371		$	26,859		$	5,812		$	—	$	128,504
Depreciation and amortization	$	13,644		$	12,530		$	14,574		$	2,642		$	2,146	$	45,536
Capital expenditures, (excluding acquisitions)	$	12,689		$	10,377		$	8,885		$	2,890		$	5,069	$	39,910
Three Months Ended June 30, 2011 (Unaudited)
Operating revenues	$	121,807		$	81,415		$	83,881		$	9,752		$	—	$	296,855
Direct operating costs		(68,827	)		(51,688	)		(57,409	)		(7,393	)		—		(185,317	)
Segment profits	$	52,980		$	29,727		$	26,472		$	2,359		$	—	$	111,538
Depreciation and amortization	$	9,841		$	10,359		$	10,398		$	2,326		$	1,860	$	34,784
Capital expenditures, (excluding acquisitions)	$	12,638		$	12,847		$	11,633		$	2,986		$	2,327	$	42,431
Six Months Ended June 30, 2012 (Unaudited)
Operating revenues	$	320,980		$	185,917		$	194,625		$	30,893		$	—	$	732,415
Direct operating costs		(190,123	)		(121,068	)		(139,114	)		(20,037	)		—	$	(470,342	)
Segment profits	$	130,857		$	64,849		$	55,511		$	10,856		$	—	$	262,073
Depreciation and amortization	$	26,495		$	24,326		$	28,915		$	5,390		$	4,394	$	89,520
Capital expenditures, (excluding acquisitions)	$	29,702		$	19,429		$	22,406		$	7,497		$	7,699	$	86,733
Identifiable assets	$	436,434		$	253,582		$	306,255		$	56,712		$	457,399	$	1,510,382
Six Months Ended June 30, 2011 (Unaudited)
Operating revenues	$	219,314		$	153,760		$	153,028		$	16,807		$	—	$	542,909
Direct operating costs		(123,760	)		(99,916	)		(105,849	)		(11,878	)		—	$	(341,403	)
Segment profits	$	95,554		$	53,844		$	47,179		$	4,929		$	—	$	201,506
Depreciation and amortization	$	17,909		$	19,764		$	22,351		$	4,233		$	3,507	$	67,764
Capital expenditures, (excluding acquisitions)	$	30,359		$	33,503		$	37,889		$	7,176		$	5,946	$	114,873
Identifiable assets	$	231,977		$	195,403		$	247,077		$	70,245		$	584,405	$	1,329,107

Schedule of Reconciliation of Segment Profits and Operating Income

	Three Months Ended June 30,						Six Months Ended June 30,
	2012			2011			2012			2011
Segment profits	$	128,504		$	111,538		$	262,073		$	201,506
General and administrative expenses		(45,540	)		(34,138	)		(86,898	)		(65,479	)
Depreciation and amortization		(45,536	)		(34,784	)		(89,520	)		(67,764	)
Gain (loss) on disposal of assets		(980	)		(942	)		(2,699	)		763
Operating income (loss)	$	36,448		$	41,674		$	82,956		$	69,026