Intangible Assets Intangible Assets (Details) - USD ($) $ in Thousands		Sep. 30, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross		$ 18,952	$ 17,480
Finite-Lived Intangible Assets, Accumulated Amortization		(16,141)	(15,459)
Finite-Lived Intangible Assets, Net		2,811	2,021
Indefinite-lived Intangible Assets (Excluding Goodwill)		280	280
Intangible Assets, Net		3,091	2,301
Developed Technology Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross		13,323	13,323
Finite-Lived Intangible Assets, Accumulated Amortization		(13,038)	(12,682)
Supplier
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross		1,560	0
Finite-Lived Intangible Assets, Accumulated Amortization		(17)	0
Channel partner relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross		730	730
Finite-Lived Intangible Assets, Accumulated Amortization		(446)	(355)
Capitalized Development [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	[1]	2,959	3,047
Finite-Lived Intangible Assets, Accumulated Amortization	[1]	(2,303)	(2,094)
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross		380	380
Finite-Lived Intangible Assets, Accumulated Amortization		$ (337)	$ (328)

[1] Includes the impact of foreign currency exchange rate fluctuations.