Note 4 - Balance Sheet Components - Capitalized Software Costs (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Jan. 01, 2022
Cloud based computing implementation costs as of January 2, 2021	$ 2,380	$ 2,831
Costs capitalized	63	324
Amortization	(841)	(775)
Cloud based computing implementation costs as of January 1, 2022	$ 1,602	$ 2,380