Business Segment Information (Tables)

3 Months Ended

Mar. 31, 2012

Business Segment Information [Abstract]

Schedule Of Segment Reporting Information

	Completion and  Remedial Services			Fluid Services			Well Servicing			Contract Drilling			Corporate and Other		Total
Three Months Ended
March 31, 2012
(Unaudited)
Operating revenues	$	164,420		$	95,325		$	95,902		$	15,250		$	—	$	370,897
Direct operating costs		(97,025	)		(62,847	)		(67,250	)		(10,206	)		—	$	(237,328	)
Segment profits	$	67,395		$	32,478		$	28,652		$	5,044		$	—	$	133,569
Depreciation and amortization	$	12,851		$	11,796		$	14,341		$	2,748		$	2,248	$	43,984
Capital expenditures, (excluding acquisitions)	$	17,013		$	9,052		$	13,521		$	4,607		$	2,630	$	46,823
Identifiable assets	$	412,206		$	245,063		$	301,996		$	62,029		$	436,403	$	1,457,697
Three Months Ended
March 31, 2011
(Unaudited)
Operating revenues	$	97,507		$	72,345		$	69,147		$	7,055		$	—	$	246,054
Direct operating costs		(54,933	)		(48,228	)		(48,440	)		(4,485	)		—		(156,086	)
Segment profits	$	42,574		$	24,117		$	20,707		$	2,570		$	—	$	89,968
Depreciation and amortization	$	8,068		$	9,404		$	11,953		$	1,907		$	1,648	$	32,980
Capital expenditures, (excluding acquisitions)	$	17,721		$	20,656		$	26,256		$	4,189		$	3,620	$	72,442
Identifiable assets	$	213,810		$	216,485		$	254,407		$	44,246		$	341,640	$	1,070,588

Schedule Of Reconciliation Of Operating Profit (Loss) From Segments

	Three Months Ended March 31,
	2012			2011
Segment profits	$	133,569		$	89,968
General and administrative expenses		(41,358	)		(31,341	)
Depreciation and amortization		(43,984	)		(32,980	)
Gain (loss) on disposal of assets		(1,719	)		1,705
Operating income (loss)	$	46,508		$	27,352