Goodwill Assets (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013
Goodwill [Roll Forward]
Goodwill, Beginning Balance	$ 59,169
Goodwill, Acquired During Period	277
Goodwill, Translation Adjustments	(935)
Goodwill, Ending Balance	58,511
North America [Member]
Goodwill [Roll Forward]
Goodwill, Beginning Balance	28,535
Goodwill, Acquired During Period	277
Goodwill, Translation Adjustments	(541)
Goodwill, Ending Balance	28,271
Europe [Member]
Goodwill [Roll Forward]
Goodwill, Beginning Balance	11,411
Goodwill, Acquired During Period	0
Goodwill, Translation Adjustments	(147)
Goodwill, Ending Balance	11,264
Asia Pacific [Member]
Goodwill [Roll Forward]
Goodwill, Beginning Balance	15,323
Goodwill, Acquired During Period	0
Goodwill, Translation Adjustments	(197)
Goodwill, Ending Balance	15,126
South America [Member]
Goodwill [Roll Forward]
Goodwill, Beginning Balance	3,900
Goodwill, Acquired During Period	0
Goodwill, Translation Adjustments	(50)
Goodwill, Ending Balance	$ 3,850