Goodwill and Intangible Assets, Net - Amortization Expense by Income Statement Caption (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Finite-Lived Intangible Assets, Net [Abstract]
Gross	$ 36,885	$ 35,410
Accumulated Amortization	(16,962)	(15,700)
Total	19,923	19,710
Gross value of fully amortized intangible assets	43,000	42,700
Capitalized software development costs
Finite-Lived Intangible Assets, Net [Abstract]
Gross	871	477
Accumulated Amortization	(8)	0
Total	863	477
Customer relationships
Finite-Lived Intangible Assets, Net [Abstract]
Gross	8,100	8,100
Accumulated Amortization	(4,682)	(4,329)
Total	3,418	3,771
Developed and core technology
Finite-Lived Intangible Assets, Net [Abstract]
Gross	4,080	4,080
Accumulated Amortization	(3,189)	(3,044)
Total	891	1,036
Distribution rights
Finite-Lived Intangible Assets, Net [Abstract]
Gross	342	352
Accumulated Amortization	(268)	(261)
Total	74	91
Patents
Finite-Lived Intangible Assets, Net [Abstract]
Gross	22,692	21,601
Accumulated Amortization	(8,269)	(7,574)
Total	14,423	14,027
Trademarks and trade names
Finite-Lived Intangible Assets, Net [Abstract]
Gross	800	800
Accumulated Amortization	(546)	(492)
Total	$ 254	$ 308