Note 10 - Income Taxes - Components of Income Tax Expense Benefit (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 29, 2024	Dec. 31, 2023	Jan. 01, 2023
Income (loss) before income taxes	$ (3,838)	$ (261)	$ (4,169)
Federal	0	0	0
State	(2)	9	3
Foreign	(20)	(6)	36
Subtotal	(22)	3	39
Federal	0	0	0
State	0	0	0
Foreign	25	(1)	59
Subtotal	25	(1)	59
Provision for income taxes, amount	3	2	98
Domestic Tax Jurisdiction [Member]
U.S.	(3,782)	(225)	(4,116)
Foreign Tax Jurisdiction [Member]
Foreign	$ (56)	$ (36)	$ (53)