Note 9 - Stock-based Compensation - Stock-based Compensation (Details) - USD ($) $ in Thousands	6 Months Ended		9 Months Ended
	Oct. 01, 2022	Oct. 02, 2021	Oct. 01, 2022	Oct. 02, 2021
Total stock-based compensation	$ 13,958	$ 10,250	$ 41,207	$ 32,624
Cost of Sales [Member]
Total stock-based compensation	880	653	2,705	2,144
Research and Development Expense [Member]
Total stock-based compensation	4,925	3,463	14,461	10,199
Selling, General and Administrative Expenses [Member]
Total stock-based compensation	$ 8,153	$ 6,134	$ 24,041	$ 20,281