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Note Q - Manufacturing Facility Closures and Disposals (Details Textual) - USD ($)
 12 Months Ended
Sep. 27, 2025
Sep. 28, 2024
Sep. 30, 2023
Restructuring Charges, Statement of Income or Comprehensive Income [Extensible Enumeration] Restructuring Costs    
Payments for Restructuring $ 566,000    
Restructuring Charges 3,218,000    
Property, Plant and Equipment, Gross 1,009,463,000 $ 1,012,043,000  
Facility Closing [Member]      
Restructuring Costs 24,073,000 $ 0 $ 0
Payments for Restructuring 3,200,000    
Restructuring Charges 20,900,000    
Facility Closing [Member] | Manufacturing Facility Closing in Holly Ridge, NC [Member]      
Restructuring Charges 14,900,000    
Tangible Asset Impairment Charges 14,400,000    
Severance Costs 300,000    
Other Restructuring Costs 200,000    
Property, Plant and Equipment, Gross 1,800,000    
Facility Closing [Member] | Manufacturing Facility Closing in Atlanta GA [Member]      
Restructuring Charges 6,600,000    
Tangible Asset Impairment Charges 3,200,000    
Severance Costs 2,600,000    
Other Restructuring Costs 200,000    
Inventory Write-down 600,000    
Facility Closing [Member] | Manufacturing Facility Closing in Colton CA [Member]      
Restructuring Charges 2,600,000    
Tangible Asset Impairment Charges 1,200,000    
Operating Lease and Finance Lease, Impairment Loss $ 1,400,000