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Supplementary Balance Sheet Information (Schedule of Other Long-Term Liabilities) (Details) - USD ($)	Sep. 28, 2024	Sep. 30, 2023
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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