Goodwill and Intangible Assets (Details 2) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2018	Mar. 31, 2017
Finite-lived Intangible Assets [Roll Forward]
Finite-lived intangible assets beginning balance	[1]	$ 56,017
Amortization		(791)	$ (687)
Finite-lived intangible assets ending balance		56,588
Indefinite-lived Intangible Assets [Roll Forward]
Loss on impairment		(22)	$ 0
In process research and development (IPR&D)
Indefinite-lived Intangible Assets [Roll Forward]
Indefinite-lived intangible assets, beginning balance		18,311
Loss on impairment		(15)
Foreign currency translation		503
Indefinite-lived intangible assets, ending balance		18,799
Trademarks and Technology
Finite-lived Intangible Assets [Roll Forward]
Finite-lived intangible assets beginning balance		34,696
Amortization		(696)
Impairment of Intangible Assets, Finite-lived		(7)
Foreign currency translation		958
Finite-lived intangible assets ending balance		34,951
Customer relationships
Finite-lived Intangible Assets [Roll Forward]
Finite-lived intangible assets beginning balance		3,010
Amortization		(95)
Foreign currency translation		(77)
Finite-lived intangible assets ending balance		$ 2,838

[1] Derived from the audited December 31, 2017 financial statements