Note 8 - Stock-based Compensation - Schedule of Stock-based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Total stock-based compensation expense	$ 1,806	$ 1,232	$ 6,394	$ 6,771
Selling and Marketing Expense [Member]
Total stock-based compensation expense	457	330	1,702	2,091
Research and Development Expense [Member]
Total stock-based compensation expense	0	278	0	1,134
General and Administrative Expense [Member]
Total stock-based compensation expense	$ 1,349	$ 624	$ 4,692	$ 3,546