Segment Information (Tables)

6 Months Ended

Jun. 30, 2013

Segment Reporting [Abstract]

Reconciliation of Adjusted Earnings before Interest, Taxes, Depreciation, and Amortization from Segments to Consolidated [Table Text Block]

The following table presents a reconciliation of Adjusted EBITDA to income from continuing operations (in thousands):

	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2013			2012			2013			2012
Segment Adjusted EBITDA:
International Services	$	54,423		$	58,100		$	104,382		$	109,915
U.S. Services	59,486			47,425			102,279			92,035
Pipe and Products	14,054			10,060			20,555			13,587
Corporate and other	184			(77		)	36			(86		)
Adjusted EBITDA Total	128,147			115,508			227,252			215,451
Interest income (expense), net	(461		)	(66		)	(663		)	193
Income tax expense	(6,081		)	(7,719		)	(12,384		)	(15,394		)
Depreciation and amortization	(19,013		)	(16,330		)	(36,706		)	(31,653		)
Gain (loss) on sale of assets	79			90			56			(105		)
Foreign currency gain (loss)	(1,688		)	(2,288		)	(5,275		)	338
Income from continuing operations	$	100,983		$	89,195		$	172,280		$	168,830

Schedule of Segment Reporting Information, by Segment

The following tables set forth certain financial information with respect to our reportable segments. Included in “Corporate and Other” are intersegment eliminations and costs associated with activities of a general nature (in thousands):

	International Services		U.S. Services		Pipe and Products		Corporate and Other			Total
Three Months Ended June 30, 2013
Revenue from external customers	$	120,872	$	115,612	$	56,491	$	—		$	292,975
Inter-segment revenues	631		5,165		19,431		(25,227		)	—
Adjusted EBITDA	54,423		59,486		14,054		184			128,147
Three Months Ended June 30, 2012
Revenue from external customers	$	114,489	$	106,482	$	41,718	$	—		$	262,689
Inter-segment revenues	371		4,625		9,113		(14,109		)	—
Adjusted EBITDA	58,100		47,425		10,060		(77		)	115,508
Six Months Ended June 30, 2013
Revenue from external customers	$	231,361	$	213,169	$	81,018	$	—		$	525,548
Inter-segment revenues	1,446		10,330		35,679		(47,455		)	—
Adjusted EBITDA	104,382		102,279		20,555		36			227,252
Six Months Ended June 30, 2012
Revenue from external customers	$	223,524	$	203,302	$	70,957	$	—		$	497,783
Inter-segment revenues	874		9,175		19,418		(29,467		)	—
Adjusted EBITDA	109,915		92,035		13,587		(86		)	215,451