Note 10 - Employee Benefit Plans - Allocation of Recognized Period Costs (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Stock-based compensation expenses	$ 25,925	$ 25,047	$ 21,484
Cost of Sales [Member]
Stock-based compensation expenses	5,252	5,087	4,169
Research and Development Expense [Member]
Stock-based compensation expenses	9,460	8,958	7,711
Selling, General and Administrative Expenses [Member]
Stock-based compensation expenses	$ 11,213	$ 11,002	$ 9,604