v3.26.1
Note 4 - Leases (Details Textual) - USD ($)
 6 Months Ended 12 Months Ended
Jul. 05, 2026
Dec. 31, 2025
Apr. 05, 2026
Lessee, Operating Lease, Renewal Term 5 years    
Operating Lease, Right-of-Use Asset $ 6,988,000 $ 7,333,000 $ 6,988,000
Operating Lease, Liability 7,470,000 $ 7,692,000 $ 7,470,000
Land and Building in Toluca, Mexico [Member]      
Lessee, Operating Lease, Term of Contract   5 years  
Operating Lease, Right-of-Use Asset   $ 2,486,000  
Financing Lease, Increase/Decrease During Period   3,645,000  
Operating Lease, Liability   $ 2,486,000  
Sale of Facility in Louisville, Kentucky [Member]      
Sale Leaseback Transaction, Net Book Value 414,000    
Proceeds From Sale, Loan, and Lease, Held-for-investment, Gross 3,200,000    
Lease Transaction Costs 280,000    
Proceeds from Sale of Property, Plant, and Equipment $ 2,920,000    
Sale Leaseback Transaction, Lease Term (Year) 20 years    
Sale Leaseback Transaction, Initial Annual Payment $ 280,000    
Operating Lease, Payments, Percentage Annual Increase 3.00%    
Sale and Leaseback Transaction, Gain (Loss), Net $ 2,506,000    
Operating Lease, Right-of-Use Asset 2,205,000    
Operating Lease, Liability $ 2,205,000    
Minimum [Member]      
Lessee, Operating Lease, Term of Contract 10 years    
Maximum [Member]      
Lessee, Operating Lease, Term of Contract 20 years