Note 16 - Major Customers and Related Information - Disaggregation of Revenue by Geographic Region (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020
Revenues	$ 7,729	$ 3,944
Americas [Member]
Revenues	3,357	1,443
Europe, Middle East and Africa [Member]
Revenues	2,385	1,046
Asia Pacific [Member]
Revenues	$ 1,987	$ 1,455

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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+ Details