Note 9 - Net Loss Per Share - Schedule of Net Loss Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Net loss	$ (2,281)	$ (1,773)	$ (11,037)	$ (10,564)
Weighted-average number of shares outstanding, basic and diluted (in shares)	8,207,318	7,166,612	7,781,132	6,977,262
Net loss per share, basic and diluted (in dollars per share)	$ (0.28)	$ (0.25)	$ (1.42)	$ (1.51)
Anti-dilutive shares excluded from computation of net loss per share (in shares) (in shares)	3,074,825	1,930,507	2,032,795	2,066,484