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Intangible Assets, Net - Components of Intangible Assets (Details) - USD ($)
$ in Thousands
Sep. 30, 2021
Dec. 31, 2020
Amortized intangible assets    
Gross Carrying Amount $ 3,359 $ 2,589
Accumulated Amortization (1,032) (884)
Net Carrying Amount 2,327 1,705
Unamortized intangible assets    
Intangible assets, gross 3,733 2,938
Intangible assets, net 2,701 2,054
Trademarks    
Unamortized intangible assets    
Carrying Amount 374 349
Patents    
Amortized intangible assets    
Gross Carrying Amount 2,258 1,496
Accumulated Amortization (206) (139)
Net Carrying Amount 2,052 1,357
License agreements    
Amortized intangible assets    
Gross Carrying Amount 1,101 1,093
Accumulated Amortization (826) (745)
Net Carrying Amount $ 275 $ 348