Note 4 - Balance Sheet Components - Intangible Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Intangible assets, gross	$ 5,080	$ 5,080
Less: accumulated amortization	(608)	(60)
Intangible assets, net	4,472	5,020
Developed Technology Rights [Member]
Intangible assets, gross	5,000	5,000
Intellectual Property [Member]
Intangible assets, gross	$ 80	$ 80

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

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-Topic 210
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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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-Topic 928
-SubTopic 340
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