Note 12 - Income (Loss) Per Share (EPS) - EPS Computations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Basic and diluted - net loss	$ (7,858)	$ (8,949)
Weighted average number of shares of shares of common stock outstanding (in shares)	5,414,079	4,710,567
Weighted average number of shares of common stock underlying vested restricted stock units (in shares)	100,592	63,328
Basic EPS - weighted average number of shares outstanding (in shares)	5,514,671	4,773,895
Diluted EPS - weighted average number of shares outstanding (in shares)	5,514,671	4,773,895