Goodwill and Intangibles (Tables)

9 Months Ended

Sep. 30, 2012

Goodwill and Intangibles [Abstract]

Carrying amount of goodwill by reportable operating segment

	North America		International			Total
Balance at January 1, 2012	$	115,298	$	21,108		$	136,406
Foreign exchange translation		160		(350	)		(190	)
Balance at September 30, 2012	$	115,458	$	20,758		$	136,216

Intangible assets and accumulated amortization balances

	Gross					Net		Weighted
	Carrying		Accumulated			Carrying		Average Useful
	Amount		Amortization			Amount		Life (Years)
Customer relationships	$	138,576	$	(21,267	)	$	117,309		8.6
Developed technology		9,503		(2,521	)		6,982		4.8
Other		7,603		(203	)		7,400
Balance at December 31, 2011	$	155,682	$	(23,991	)	$	131,691		8.1
Customer relationships	$	136,006	$	(30,902	)	$	105,104		7.9
Developed technology		9,469		(3,702	)		5,767		4.1
Other		10,636		(482	)		10,154
Balance at September 30, 2012	$	156,111	$	(35,086	)	$	121,025		7.4