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Note 6 - Leases (Details Textual) - USD ($)
$ in Thousands
3 Months Ended
Apr. 02, 2023
Apr. 03, 2022
Jan. 01, 2023
Operating Lease, Expense $ 100 $ 100  
Operating and Finance Lease, Right of Use Asset 1,592   $ 1,397
Operating and Finance Lease Liability 1,601   $ 1,394
Right of Use Asset Obtained in Exchange for Finance and Operating Lease Liability 445 0  
Operating Lease, Right-of-Use Asset, Periodic Reduction 155 193  
Approximate [Member]      
Operating and Finance Lease, Right of Use Asset 1,600 1,400  
Operating and Finance Lease Liability $ 1,600 $ 1,400  
Minimum [Member]      
Lessee, Operating Lease, Term of Contract (Year)     1 year
Lessee, Finance Lease, Term of Contract (Year)     2 years
Maximum [Member]      
Lessee, Operating Lease, Term of Contract (Year)     5 years
Lessee, Finance Lease, Term of Contract (Year)     3 years