Note 11 - Interest Expense and Other - Schedule of Interest Expense and Other Nonoperating Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Common stock purchase agreement costs	$ 1,124	$ 0
Amortization of premiums (accretion of discounts) on marketable securities, net	(694)	(474)
Expected credit losses	35	35
Loss on disposal of assets	0	111
Other	(32)	80
Interest expense and other	$ 433	$ (248)