Note 6 - Leases - Details of Right-of-Use Assets and Lease Liabilities (Details) - USD ($) $ in Thousands	Jul. 03, 2022	Jan. 02, 2022
Total right-of-use assets	$ 1,141	$ 1,529
Total lease liabilities	1,187	1,563
Right of Use Assets, Net [Member]
Operating leases	640	809
Finance leases	501	720
Current and Lease Liabilities - Non-current [Member]
Operating leases	695	873
Finance leases	$ 492	$ 690