Note 2 - Liquidity Considerations (Details Textual) - USD ($) $ in Thousands	12 Months Ended			24 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2022
Retained Earnings (Accumulated Deficit)	$ (107,893)	$ (104,070)
Net Income (Loss) Attributable to Parent	(3,823)	(936)	$ (9,021)	$ (9,021)
Cash and Cash Equivalents, at Carrying Value	$ 14,936	$ 21,388