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Note 4 - Leases (Details Textual) - USD ($)
Apr. 02, 2023
Dec. 31, 2022
Lessee, Operating Lease, Renewal Term 5 years  
Operating Lease, Right-of-Use Asset $ 4,072,000 $ 4,251,000
Operating Lease, Liability, Total $ 4,594,000 $ 4,878,000
Minimum [Member]    
Lessee, Operating Lease, Term of Contract 10 years  
Maximum [Member]    
Lessee, Operating Lease, Term of Contract 11 years