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Note 6 - Leases (Details Textual) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jul. 02, 2023
Apr. 02, 2023
Jul. 03, 2022
Apr. 03, 2022
Jul. 02, 2023
Jul. 03, 2022
Jan. 01, 2023
Jan. 01, 2022
Operating Lease, Expense $ 100   $ 100   $ 200 $ 200    
Operating and Finance Lease, Right of Use Asset 1,338       1,338   $ 1,397  
Operating and Finance Lease Liability 1,355       1,355   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 91   86          
Finance Lease, Right-of-Use Asset, Amortization 163   $ 109   323 $ 219    
Approximate [Member]                
Operating and Finance Lease, Right of Use Asset $ 1,300       $ 1,300     $ 1,400
Operating and Finance Lease Liability       $ 1,400     $ 1,400  
Minimum [Member]                
Lessee, Operating Lease, Term of Contract (Year) 1 year       1 year      
Lessee, Finance Lease, Term of Contract (Year) 2 years       2 years      
Maximum [Member]                
Lessee, Operating Lease, Term of Contract (Year) 5 years       5 years      
Lessee, Finance Lease, Term of Contract (Year) 3 years       3 years