Goodwill and Intangible Assets (Details 2) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Finite-lived Intangible Assets [Roll Forward]
Finite-lived intangible assets beginning balance	$ 56,017
Amortization	(1,550)	$ (1,396)
Finite-lived intangible assets ending balance	52,930
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	(465)
Indefinite-lived intangible assets, ending balance	17,831
Trademarks and Technology
Finite-lived Intangible Assets [Roll Forward]
Finite-lived intangible assets beginning balance	34,696
Amortization	(1,363)
Impairment of Intangible Assets, Finite-lived	(7)
Foreign currency translation	(907)
Finite-lived intangible assets ending balance	32,419
Customer relationships
Finite-lived Intangible Assets [Roll Forward]
Finite-lived intangible assets beginning balance	3,010
Amortization	(187)
Foreign currency translation	(143)
Finite-lived intangible assets ending balance	$ 2,680