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Supplementary Balance Sheet Information (Schedule of Other Long-Term Liabilities) (Details) - USD ($) | Sep. 30, 2023 | Sep. 24, 2022
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Supplementary Balance Sheet Information [Line Items] |  |
Advance payments on purchases contracts | $ 2,992,494 | $ 1,994,459
Nonqualified investment plan liability | 21,768,079 | 18,445,157
Other | 4,804,238 | 3,942,604
Other long-term liabilities | 48,490,953 | 42,221,571
Less current portion | 1,046,077 | 742,351
Total other long-term liabilities | 47,444,876 | 41,479,220
Workers' Compensation Insurance [Member] |  |
Supplementary Balance Sheet Information [Line Items] |  |
Self-insurance liabilities | 13,297,179 | 13,287,189
General Liability Insurance [Member] |  |
Supplementary Balance Sheet Information [Line Items] |  |
Self-insurance liabilities | $ 5,628,963 | $ 4,552,162

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