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Long-Term Debt (Schedule of Long-Term Debt and Short-Term Loans) (Details) - USD ($)	Sep. 27, 2025	Sep. 28, 2024	Jun. 30, 2021
Debt Instrument [Line Items]
Less unamortized prepaid loan costs	$ (4,180,702)	$ (4,607,467)
Total long-term debt	514,766,658	532,622,438
Less current portion	17,477,241	17,520,876
Long-term debt, net of current portion	497,289,417	515,101,562
Senior Notes, Maturing 2031 [Member]
Debt Instrument [Line Items]
Bonds payable	$ 350,000,000	350,000,000
Interest rate	4.00%		4.00%
Recovery Zone Facility Bonds [Member]
Debt Instrument [Line Items]
Bonds payable	$ 45,380,000	49,910,000
Notes Payable Due to Banks [Member]
Debt Instrument [Line Items]
Notes payable	$ 123,567,360	$ 137,319,905
Weighted average interest rate	6.57%	7.49%

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