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Supplementary Balance Sheet Information (Schedule Of Other Long-Term Liabilities) (Details) - USD ($) | Sep. 24, 2022 | Sep. 25, 2021
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Supplementary Balance Sheet Information [Line Items] |  |
Advance payments on purchases contracts | $ 1,994,459 | $ 2,264,784
Nonqualified investment plan liability | 18,445,157 | 22,736,980
Interest rate swap liability |  | 4,531,140
Other | 3,942,604 | 3,211,513
Other long-term liabilities | 42,221,571 | 51,532,388
Less current portion | 742,351 | 1,113,441
Total other long-term liabilities | 41,479,220 | 50,418,947
Workers' Compensation Insurance [Member] |  |
Supplementary Balance Sheet Information [Line Items] |  |
Self-insurance liabilities | 13,287,189 | 14,501,624
General Liability [Member] |  |
Supplementary Balance Sheet Information [Line Items] |  |
Self-insurance liabilities | $ 4,552,162 | $ 4,286,347

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