Goodwill and Intangible Assets, Net (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2012
Carrying amount of goodwill by reportable segment
Goodwill	$ 130,270	$ 121,981	$ 128,812
North America
Carrying amount of goodwill by reportable segment
Goodwill	87,104	78,739	77,630
Europe
Carrying amount of goodwill by reportable segment
Goodwill	41,388	41,263	49,238
Asia/Pacific
Carrying amount of goodwill by reportable segment
Goodwill	$ 1,778	$ 1,979	$ 1,944

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant