Goodwill and Intangible Assets (Details 1) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, accumulated amortization	$ (7,073)		$ (6,457)
Finite-lived intangible assets, net carrying amount	56,588		56,017	[1]
Indefinite-lived Intangible Assets [Line Items]
Intangible assets gross carrying amount	63,661		62,474
Intangible assets net carrying amount	56,588		56,017
In process research and development (IPR&D)
Indefinite-lived Intangible Assets [Line Items]
Indefinite-lived intangible assets	18,799		18,311
Trademarks and Technology
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross carrying amount	41,160		40,380
Finite-lived intangible assets, accumulated amortization	(6,209)		(5,684)
Finite-lived intangible assets, net carrying amount	$ 34,951		34,696
Weighted average remaining amortization period	11 years 7 months 13 days	12 years 9 months 18 days
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross carrying amount	$ 3,702		3,783
Finite-lived intangible assets, accumulated amortization	(864)		(773)
Finite-lived intangible assets, net carrying amount	$ 2,838		$ 3,010
Weighted average remaining amortization period	7 years 7 months 6 days	7 years 10 months 24 days

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