Goodwill and Other Intangible Assets Goodwill Activity by Segment (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2016 USD ($)
Goodwill [Line Items]
Goodwill, Acquired During Period	$ 671
Goodwill, Written off Related to Sale of Business Unit	(1,260)
Goodwill [Roll Forward]
Goodwill, beginning of period	287,332
Foreign currency translation	2,546
Goodwill, end of period	289,289
North America [Member]
Goodwill [Line Items]
Goodwill, Acquired During Period	671
Goodwill, Written off Related to Sale of Business Unit	(1,260)
Goodwill [Roll Forward]
Goodwill, beginning of period	178,746
Foreign currency translation	0
Goodwill, end of period	178,157
EMEA [Member]
Goodwill [Line Items]
Goodwill, Acquired During Period	0
Goodwill, Written off Related to Sale of Business Unit	0
Goodwill [Roll Forward]
Goodwill, beginning of period	92,063
Foreign currency translation	1,822
Goodwill, end of period	93,885
ROW [Member]
Goodwill [Line Items]
Goodwill, Acquired During Period	0
Goodwill, Written off Related to Sale of Business Unit	0
Goodwill [Roll Forward]
Goodwill, beginning of period	16,523
Foreign currency translation	724
Goodwill, end of period	$ 17,247