Note 8 - Leases - Summary of Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 03, 2021	Dec. 29, 2019	Dec. 29, 2019	Dec. 30, 2018
Operating cash flows used for operating leases	$ 497	$ 791
Operating cash flows used for finance leases	38	24
Financing cash flows used for financing leases	270	365	$ 365	$ 407
Total	805	1,180
Operating leases	0	2,200
Finance leases	914	170
Total	$ 914	$ 2,370