Note 8 - Leases - Summary of Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 02, 2022	Jan. 03, 2021	Dec. 29, 2019
Operating cash flows used for operating leases	$ 402	$ 497
Operating cash flows used for finance leases	69	38
Financing cash flows used for financing leases	378	270	$ 365
Total	849	805
Operating leases	0	0
Finance leases	1,311	914
Total	$ 1,311	$ 914