Goodwill Assets (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2015 USD ($)
Goodwill [Roll Forward]
Goodwill, Beginning Balance	$ 77,933
Goodwill, Acquired During Period	3,590
Goodwill, Translation Adjustments	(3,111)
Goodwill, Ending Balance	78,412
North America [Member]
Goodwill [Roll Forward]
Goodwill, Beginning Balance	42,677
Goodwill, Acquired During Period	30
Goodwill, Translation Adjustments	(231)
Goodwill, Ending Balance	42,476
EMEA [Member]
Goodwill [Roll Forward]
Goodwill, Beginning Balance	16,050
Goodwill, Acquired During Period	3,457
Goodwill, Translation Adjustments	(1,107)
Goodwill, Ending Balance	18,400
Asia Pacific [Member]
Goodwill [Roll Forward]
Goodwill, Beginning Balance	16,006
Goodwill, Acquired During Period	103
Goodwill, Translation Adjustments	(728)
Goodwill, Ending Balance	15,381
South America [Member]
Goodwill [Roll Forward]
Goodwill, Beginning Balance	3,200
Goodwill, Acquired During Period	0
Goodwill, Translation Adjustments	(1,045)
Goodwill, Ending Balance	$ 2,155