Note 8 - Stock-based Compensation - Schedule of Allocation of Recognized Period Cost (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 02, 2023	Apr. 03, 2022
Total costs and expenses	$ 715	$ 383
Cost of Sales [Member]
Total costs and expenses	78	56
Research and Development Expense [Member]
Total costs and expenses	184	85
Selling, General and Administrative Expenses [Member]
Total costs and expenses	$ 453	$ 242