Note 9 - Net Loss Per Share - Schedule of Net Loss Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Net loss	$ (4,860)	$ (3,629)	$ (8,756)	$ (8,791)
Weighted-average number of shares outstanding, basic and diluted (in shares)	7,674,910	6,973,218	7,564,523	6,881,648
Net loss per share, basic and diluted (in dollars per share)	$ (0.63)	$ (0.52)	$ (1.16)	$ (1.28)
Anti-dilutive shares excluded from computation of net loss per share (in shares) (in shares)	1,905,778	2,350,812	1,920,558	2,047,993