Note 2 - Summary of Significant Accounting Policies - Calculation of Basic and Diluted EPS (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Net loss	$ (1,739)	$ (111)
Weighted-average shares of common stock outstanding used in computing net loss per share of common stock (basic and diluted) (in shares)	2,035	1,431
Net loss per share attributable to common stockholders (basic and diluted) (in dollars per share)	$ (0.85)	$ (0.08)