Note 7 - Leases - Summary of Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 01, 2023	Jan. 02, 2022	Jan. 03, 2021
Operating cash flows used for operating leases	$ 409	$ 402
Operating cash flows used for finance leases	23	69
Financing cash flows used for financing leases	452	378	$ 270
Finance lease	$ 650	$ 1,311