Goodwill and Intangible Assets - Other Intangible Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Other
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 68,246	$ 66,096
Accumulated Amortization	(27,605)	(26,603)
Net Carrying Amount	40,641	39,493
Patents
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	12,496	12,014
Accumulated Amortization	(2,691)	(2,595)
Net Carrying Amount	9,805	9,419
Distribution agreements
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	5,626	5,626
Accumulated Amortization	(3,000)	(2,853)
Net Carrying Amount	2,626	2,773
License agreements
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	19,639	19,109
Accumulated Amortization	(2,616)	(2,438)
Net Carrying Amount	17,023	16,671
Trademarks
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	7,974	7,259
Accumulated Amortization	(2,702)	(2,554)
Net Carrying Amount	5,272	4,705
Covenants not to compete
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,028	1,028
Accumulated Amortization	(886)	(873)
Net Carrying Amount	142	155
Customer lists
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	21,216	20,793
Accumulated Amortization	(15,443)	(15,023)
Net Carrying Amount	5,773	5,770
Royalty agreements
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	267	267
Accumulated Amortization	(267)	(267)
Net Carrying Amount	$ 0	$ 0