Note 3 - Revenue - Revenues Disaggregated by Geography (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2024	Mar. 31, 2023
Revenues	$ 4,957	$ 7,287
UNITED STATES
Revenues	3,595	5,981
Latin America [Member]
Revenues	315	0
Europe [Member]
Revenues	856	579
Asia [Member]
Revenues	191	727
Non-US [Member]
Revenues	$ 1,362	$ 1,306

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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+ Details