Note 15 - Share-based Compensation - Share-based Compensation (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Total share-based compensation expense	$ 2,144	$ 3,273	$ 4,616	$ 5,793
Cost of Sales [Member]
Total share-based compensation expense	114	266	250	467
Research and Development Expense [Member]
Total share-based compensation expense	310	630	675	1,193
Selling and Marketing Expense [Member]
Total share-based compensation expense	186	329	412	548
General and Administrative Expense [Member]
Total share-based compensation expense	$ 1,534	$ 2,048	$ 3,279	$ 3,585