Note 14 - Equity Incentive Plan - Total Stock-based Compensation Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Stock-based compensation expense	$ 12,158	$ 13,537	$ 13,611
Cost of Sales [Member]
Stock-based compensation expense	328	575	779
Research and Development Expense [Member]
Stock-based compensation expense	1,612	1,934	1,563
Selling, General and Administrative Expenses [Member]
Stock-based compensation expense	$ 10,218	$ 11,028	$ 11,269