Note 8 - Stock-based Compensation - Schedule of Stock-based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Total stock-based compensation expense	$ 2,921	$ 3,223	$ 4,588	$ 5,539
Selling and Marketing Expense [Member]
Total stock-based compensation expense	946	1,091	1,245	1,761
Research and Development Expense [Member]
Total stock-based compensation expense	0	423	0	857
General and Administrative Expense [Member]
Total stock-based compensation expense	$ 1,975	$ 1,709	$ 3,343	$ 2,921