Note 12 - Income Taxes - Components of Income Tax Expense Benefit (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 02, 2021	Dec. 28, 2019	Dec. 29, 2018
Federal	$ 54	$ 499	$ 536
State	68	45	38
Foreign	1,025	1,345	1,869
Current Income Tax Expense (Benefit), Total	1,147	1,889	2,443
Federal	0	0	0
State	0	0	0
Foreign	(83)	(317)	(90)
Deferred Income Tax Expense (Benefit), Total	(83)	(317)	(90)
Income tax expense	$ 1,064	$ 1,572	$ 2,353