Note 15 - Income Taxes - Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Jan. 01, 2022	Jan. 02, 2021
Balance	$ 1,196	$ 0
Gross increases: tax positions in prior period	0	0	$ 0
Gross increases: tax positions in current period	0	1,196	0
Balance	$ 1,196	$ 1,196	$ 0