Note 2 - Revenue Recognition - Revenues Disaggregated by Geography (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Revenues	$ 27,081	$ 26,941
UNITED STATES
Revenues	21,062	20,311
Americas [Member]
Revenues	577	213
Europe [Member]
Revenues	3,064	2,888
Asia [Member]
Revenues	2,378	3,529
Non-US [Member]
Revenues	$ 6,019	$ 6,630