Note 6 - Leases - Details of Right-of-Use Assets and Lease Liabilities (Details) - USD ($) $ in Thousands	Oct. 02, 2022	Jan. 02, 2022
Total right-of-use assets	$ 944	$ 1,529
Total lease liabilities	992	1,563
Right of Use Assets, Net [Member]
Operating leases	552	809
Finance leases	392	720
Current and Lease Liabilities - Non-current [Member]
Operating leases	601	873
Finance leases	$ 391	$ 690