Note 6 - Leases - Details of Right-of-Use Assets and Lease Liabilities (Details) - USD ($) $ in Thousands	Apr. 02, 2023	Jan. 01, 2023
Total right-of-use assets	$ 1,592	$ 1,397
Total lease liabilities	1,601	1,394
Right of Use Assets, Net [Member]
Operating leases	374	464
Finance leases	1,218	933
Current and Lease Liabilities - Non-current [Member]
Operating leases	411	507
Finance leases	$ 1,190	$ 887