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Intangible Assets and Goodwill Intangible Assets (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Assets, Gross $ 18,903 $ 17,480
Finite-Lived Intangible Assets, Accumulated Amortization (16,495) (15,459)
Finite-Lived Intangible Assets, Net 2,408 2,021
Indefinite-lived Intangible Assets (Excluding Goodwill) 200 280
Intangible Assets, Net 2,608 2,301
Developed Technology Rights [Member]    
Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Assets, Gross 13,117 13,323
Finite-Lived Intangible Assets, Accumulated Amortization (13,117) (12,682)
Supplier    
Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Assets, Gross 1,560 0
Finite-Lived Intangible Assets, Accumulated Amortization (43) 0
Channel partner relationships [Member]    
Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Assets, Gross 730 730
Finite-Lived Intangible Assets, Accumulated Amortization (477) (355)
Capitalized Development [Member]    
Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Assets, Gross [1] 3,116 3,047
Finite-Lived Intangible Assets, Accumulated Amortization [1] (2,518) (2,094)
Customer Relationships [Member]    
Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Assets, Gross 380 380
Finite-Lived Intangible Assets, Accumulated Amortization $ (340) $ (328)
[1] Includes the impact of foreign currency exchange rate fluctuations.