Goodwill and Intangible Assets - Other Intangible Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016	Jun. 30, 2016
Other
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 86,792		$ 77,387
Accumulated Amortization	(33,111)	$ (30,048)	(30,048)
Net Carrying Amount	53,681	$ 47,339	47,339
Patents
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	15,192		14,130
Accumulated Amortization	(3,444)		(3,165)
Net Carrying Amount	11,748		10,965
Distribution agreements
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	6,626		6,626
Accumulated Amortization	(4,013)		(3,527)
Net Carrying Amount	2,613		3,099
License agreements
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	21,284		20,695
Accumulated Amortization	(4,067)		(3,422)
Net Carrying Amount	17,217		17,273
Trademarks
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	16,208		12,380
Accumulated Amortization	(3,992)		(3,330)
Net Carrying Amount	12,216		9,050
Covenants not to compete
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,029		1,028
Accumulated Amortization	(953)		(936)
Net Carrying Amount	76		92
Customer lists
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	25,603		22,261
Accumulated Amortization	(16,642)		(15,401)
Net Carrying Amount	8,961		6,860
In-process technology
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	850		267
Accumulated Amortization	0		(267)
Net Carrying Amount	$ 850		$ 0