Note 9 - Income Taxes (Details Textual) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 01, 2023	Oct. 02, 2022	Oct. 01, 2023	Oct. 02, 2022
Income Tax Expense (Benefit)	$ 4	$ 3	$ 4	$ 19
Effective Income Tax Rate Reconciliation, Repatriation of Foreign Earnings, Percent			2.67%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent			21.00%