Goodwill and Intangible Assets, Net - Components of Intangible Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets, Net [Abstract]
Gross	$ 59,651	$ 64,708
Accumulated Amortization	(40,034)	(44,878)
Total	19,617	19,830
Gross value of fully amortized intangible assets	17,600	7,400
Distribution rights
Finite-Lived Intangible Assets, Net [Abstract]
Gross	336	322
Accumulated Amortization	(241)	(210)
Total	95	112
Patents
Finite-Lived Intangible Assets, Net [Abstract]
Gross	20,962	16,587
Accumulated Amortization	(7,294)	(6,491)
Total	13,668	10,096
Trademarks and trade names
Finite-Lived Intangible Assets, Net [Abstract]
Gross	2,786	2,785
Accumulated Amortization	(2,435)	(2,205)
Total	351	580
Developed and core technology
Finite-Lived Intangible Assets, Net [Abstract]
Gross	4,080	12,480
Accumulated Amortization	(2,971)	(10,016)
Total	1,109	2,464
Capitalized software development costs
Finite-Lived Intangible Assets, Net [Abstract]
Gross	254	0
Accumulated Amortization	0	0
Total	254	0
Customer relationships
Finite-Lived Intangible Assets, Net [Abstract]
Gross	31,233	32,534
Accumulated Amortization	(27,093)	(25,956)
Total	$ 4,140	$ 6,578