Note 6 - Intangible Assets, Net - Summary of Intangible Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Amortizable intangible assets, gross	$ 1,566	$ 1,076
Accumulated amortization	(138)	(23)
Total estimated amortization expense	1,428	1,053
Indefinite life assets (non-amortizable)	344	344
Total intangible assets, net	1,772	1,397
Patents [Member]
Amortizable intangible assets, gross	368	280
Trademarks [Member]
Amortizable intangible assets, gross	125	84
Computer Software, Intangible Asset [Member]
Amortizable intangible assets, gross	1,023	662
Other Intangible Assets [Member]
Amortizable intangible assets, gross	$ 50	$ 50

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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