Note 3 - Liquidity and Capital Resource and Going Concern Evaluation (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Operating Income (Loss)	$ (6,012)	$ (11,119)
Net Cash Provided by (Used in) Operating Activities	(2,012)	(3,189)
Cash and cash equivalents	817	$ 4,391
Working Capital	$ 4,110