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Supplementary Balance Sheet Information (Schedule of Other Long-Term Liabilities) (Details) - USD ($) | Sep. 28, 2024 | Sep. 30, 2023
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Supplementary Balance Sheet Information [Line Items] |  |
Advance payments on purchases contracts | $ 3,063,450 | $ 2,992,494
Nonqualified investment plan liability | 28,916,206 | 21,768,079
Other | 5,927,404 | 4,804,238
Other long-term liabilities | 57,376,082 | 48,490,953
Less current portion | 1,394,960 | 1,046,077
Total other long-term liabilities | 55,981,122 | 47,444,876
Workers' Compensation Insurance [Member] |  |
Supplementary Balance Sheet Information [Line Items] |  |
Self-insurance liabilities | 12,137,235 | 13,297,179
General Liability Insurance [Member] |  |
Supplementary Balance Sheet Information [Line Items] |  |
Self-insurance liabilities | $ 7,331,787 | $ 5,628,963

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