Goodwill and Intangible Assets - Other Intangible Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Other
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	$ 57,050	$ 53,616
Accumulated Amortization	(24,493)	(22,480)
Net Carrying Amount	32,557	31,136
Patents
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	11,060	10,199
Accumulated Amortization	(2,374)	(2,196)
Net Carrying Amount	8,686	8,003
Distribution agreements
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	5,626	5,376
Accumulated Amortization	(2,558)	(2,285)
Net Carrying Amount	3,068	3,091
License agreements and trademarks
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	11,396	8,995
Accumulated Amortization	(2,122)	(1,823)
Net Carrying Amount	9,274	7,172
Trademarks
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	7,267	7,298
Accumulated Amortization	(2,313)	(2,079)
Net Carrying Amount	4,954	5,219
Non-compete agreements
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	1,029	1,029
Accumulated Amortization	(755)	(636)
Net Carrying Amount	274	393
Customer lists
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	20,405	20,452
Accumulated Amortization	(14,104)	(13,194)
Net Carrying Amount	6,301	7,258
Royalty agreements
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	267	267
Accumulated Amortization	(267)	(267)
Net Carrying Amount	$ 0	$ 0