Goodwill and Intangible Assets, Net (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
Changes in gross carrying amount of finite-lived intangible assets
Gross Carrying Amount	$ 63,684	$ 38,589	$ 63,684	$ 38,589	$ 46,026
Accumulated Amortization	(23,609)	(18,337)	(23,609)	(18,337)	(18,170)
Net Carrying Amount	40,075	20,252	40,075	20,252	27,856
Amortization expense of intangible assets	1,700	1,000	5,438	3,200
Estimated future amortization of intangible assets
Final three months of 2012	1,677		1,677
2013	6,707		6,707
2014	6,495		6,495
2015	5,732		5,732
2016	5,365		5,365
2017	3,822		3,822
Thereafter	10,277		10,277
Total	40,075		40,075
North America
Changes in gross carrying amount of finite-lived intangible assets
Gross Carrying Amount	35,620	24,022	35,620	24,022	32,912
Accumulated Amortization	(16,278)	(12,746)	(16,278)	(12,746)	(13,288)
Net Carrying Amount	19,342	11,276	19,342	11,276	19,624
Europe
Changes in gross carrying amount of finite-lived intangible assets
Gross Carrying Amount	28,064	14,567	28,064	14,567	13,114
Accumulated Amortization	(7,331)	(5,591)	(7,331)	(5,591)	(4,882)
Net Carrying Amount	$ 20,733	$ 8,976	$ 20,733	$ 8,976	$ 8,232

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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