Goodwill and Intangible Assets - Other Intangible Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Other
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 69,156	$ 66,096
Accumulated Amortization	(28,569)	(26,603)
Net Carrying Amount	40,587	39,493
Patents
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	12,914	12,014
Accumulated Amortization	(2,829)	(2,595)
Net Carrying Amount	10,085	9,419
Distribution agreements
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	5,626	5,626
Accumulated Amortization	(3,148)	(2,853)
Net Carrying Amount	2,478	2,773
License agreements
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	20,194	19,109
Accumulated Amortization	(2,790)	(2,438)
Net Carrying Amount	17,404	16,671
Trademarks
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	7,974	7,259
Accumulated Amortization	(2,861)	(2,554)
Net Carrying Amount	5,113	4,705
Covenants not to compete
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,029	1,028
Accumulated Amortization	(903)	(873)
Net Carrying Amount	126	155
Customer lists
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	21,152	20,793
Accumulated Amortization	(15,771)	(15,023)
Net Carrying Amount	5,381	5,770
Royalty agreements
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	267	267
Accumulated Amortization	(267)	(267)
Net Carrying Amount	$ 0	$ 0