Note 6 - Leases - Details of Right-of-Use Assets and Lease Liabilities (Details) - USD ($) $ in Thousands	Oct. 01, 2023	Jan. 01, 2023
Total right-of-use assets	$ 1,082	$ 1,397
Total lease liabilities	1,105	1,394
Right of Use Assets, Net [Member]
Operating leases	190	464
Finance leases	892	933
Current and Lease Liabilities - Non-current [Member]
Operating leases	208	507
Finance leases	$ 897	$ 887