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Note 1 - Nature of Organization and Operations (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Retained Earnings (Accumulated Deficit), Total	$ (50,409)	$ (52,254)
Cash and Cash Equivalents, at Carrying Value, Total	1,633	2,883
Operating Income (Loss), Total	(2,480)	(2,549)
Net Cash Provided by (Used in) Operating Activities, Total	(708)	$ 471
Working Capital	$ (2,514)

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