Note 17 - Major Customers and Related Information - Disaggregation of Revenue by Geographic Region (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022
Revenues	$ 6,133	$ 8,049
Americas [Member]
Revenues	3,773	5,315
Europe, Middle East and Africa [Member]
Revenues	2,302	2,487
Asia Pacific [Member]
Revenues	$ 58	$ 247

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