Note 9 - Stock-based Compensation - Stock-based Compensation (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 02, 2022	Jul. 03, 2021	Jul. 02, 2022	Jul. 03, 2021
Total stock-based compensation	$ 13,124	$ 11,920	$ 27,249	$ 22,374
Cost of Sales [Member]
Total stock-based compensation	890	825	1,825	1,491
Research and Development Expense [Member]
Total stock-based compensation	4,691	3,969	9,536	6,736
Selling, General and Administrative Expenses [Member]
Total stock-based compensation	$ 7,543	$ 7,126	$ 15,888	$ 14,147