Note 17 - Major Customers and Related Information - Disaggregation of Revenue by Geographic Region (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2022	Dec. 31, 2021
Americas	$ 8,049	$ 7,729	$ 8,049	$ 7,729
Americas [Member]
Americas	5,315	3,357
Europe, Middle East and Africa [Member]
Americas	2,487	2,385
Asia Pacific [Member]
Americas	$ 247	$ 1,987

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