Note 3 - Other Intangible Assets (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Finite-Lived Intangible Assets, Remaining Amortization Period	3 years 2 months 12 days
Amortization	$ 159	$ 150
Patents [Member]
Finite-lived Intangible Assets, Amortized	80
Finite-lived Intangible Assets, In-process	111
Amortization	$ 159	$ 150