Note 18 - Commitments - Balance Sheet Information (Details) - USD ($) $ in Thousands	Jan. 01, 2022	Jan. 02, 2021
Operating lease right of use assets	$ 1,877	$ 2,409
Operating right of use liability - current	(1,502)	(1,886)
Operating right of use liability - non-current	(1,631)	(2,641)
Total operating lease liabilities	(3,133)	(4,527)
Property and equipment - (right of use assets)	1,367	1,140
Accumulated depreciation	(375)	(746)
Finance lease liability - current	(437)	(247)
Finance lease liability - non-current	(502)	(106)
Total finance lease liabilities	$ (939)	$ (353)
Operating leases (Year)	1 year 9 months 18 days	2 years 10 days
Finance leases (Year)	2 years 4 months 2 days	1 year 5 months 12 days
Operating leases	3.32%	4.06%
Finance leases	1.15%	2.63%
Other Current Assets [Member]
Operating right of use liability - current	$ (1,502)	$ (1,886)
Property and equipment, net	992	394
Other Current Liabilities [Member]
Finance lease liability - current	$ (437)	$ (247)