Goodwill and Intangible Assets, Net - Finite-Lived Intangibles (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Finite-Lived Intangible Assets, Net [Abstract]
Gross	[1]	$ 54,712		$ 54,607
Accumulated Amortization	[1]	(22,777)		(21,681)
Intangible assets, net		31,935		32,926
Finite-lived intangible assets, fully amortized, gross		9,400		9,000
Amortization expense		1,554	$ 1,039
Cost of sales
Finite-Lived Intangible Assets, Net [Abstract]
Amortization expense		21	35
Selling, general and administrative expenses
Finite-Lived Intangible Assets, Net [Abstract]
Amortization expense		1,533	$ 1,004
Distribution rights
Finite-Lived Intangible Assets, Net [Abstract]
Gross	[1]	327		312
Accumulated Amortization	[1]	(107)		(96)
Intangible assets, net		220		216
Patents
Finite-Lived Intangible Assets, Net [Abstract]
Gross	[1]	11,468		11,425
Accumulated Amortization	[1]	(4,580)		(4,737)
Intangible assets, net		6,888		6,688
Trademarks and trade names
Finite-Lived Intangible Assets, Net [Abstract]
Gross	[1]	2,400		2,401
Accumulated Amortization	[1]	(1,117)		(1,053)
Intangible assets, net		1,283		1,348
Developed technology and core technology
Finite-Lived Intangible Assets, Net [Abstract]
Gross	[1]	12,585		12,587
Accumulated Amortization	[1]	(2,611)		(2,144)
Intangible assets, net		9,974		10,443
Capitalized software development costs
Finite-Lived Intangible Assets, Net [Abstract]
Gross	[1]	235		167
Accumulated Amortization	[1]	(118)		(97)
Intangible assets, net		117		70
Customer relationships
Finite-Lived Intangible Assets, Net [Abstract]
Gross	[1]	27,697		27,715
Accumulated Amortization	[1]	(14,244)		(13,554)
Intangible assets, net		$ 13,453		$ 14,161

[1] This table excludes the gross value of fully amortized intangible assets totaling $9.4 million and $9.0 million at March 31, 2016 and December 31, 2015, respectively.