Goodwill and Intangible Assets - Other Intangible Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Other
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 97,680	$ 77,387
Accumulated Amortization	(38,127)	(30,048)
Net Carrying Amount	59,553	47,339
Patents
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	16,528	14,130
Accumulated Amortization	(3,737)	(3,165)
Net Carrying Amount	12,791	10,965
Distribution agreements
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	7,262	6,626
Accumulated Amortization	(4,686)	(3,527)
Net Carrying Amount	2,576	3,099
License agreements
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	23,783	20,695
Accumulated Amortization	(5,568)	(3,422)
Net Carrying Amount	18,215	17,273
Trademarks
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	16,224	12,380
Accumulated Amortization	(4,686)	(3,330)
Net Carrying Amount	11,538	9,050
Covenants not to compete
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,028	1,028
Accumulated Amortization	(968)	(936)
Net Carrying Amount	60	92
Customer lists
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	31,935	22,261
Accumulated Amortization	(18,482)	(15,401)
Net Carrying Amount	13,453	6,860
In-process technology
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	920
Accumulated Amortization	0
Net Carrying Amount	$ 920
Royalty agreements
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount		267
Accumulated Amortization		(267)
Net Carrying Amount		$ 0