Supplementary Balance Sheet Information (Schedule Of Other Long-Term Liabilities) (Details) - USD ($)	Sep. 28, 2019	Sep. 29, 2018
Supplementary Balance Sheet Information [Line Items]
Advance payments on purchases contracts	$ 2,856,569	$ 3,115,106
Deferred lease expense	1,949,992	1,941,708
Nonqualified investment plan liability	16,446,037	15,033,318
Other	3,906,319	2,124,800
Other long-term liabilities	43,023,602	43,324,934
Less current portion	1,133,920	1,166,773
Other long-term liabilities	41,889,682	42,158,161
Workers' Compensation Insurance [Member]
Supplementary Balance Sheet Information [Line Items]
Self-insurance liabilities	13,814,615	16,333,768
General Liability Insurance [Member]
Supplementary Balance Sheet Information [Line Items]
Self-insurance liabilities	$ 4,050,070	$ 4,776,234

Advance payment on purchase contracts non current.

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Deferred lease expense.

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Supplementary Balance Sheet Information [Line Items]

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Carrying value as of the balance sheet date of obligations incurred through that date and due beyond one year (or beyond one operating cycle if longer) to insurance entities to mitigate potential loss from various risks or to satisfy a promise to provide certain coverages to employees.

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Amount of liabilities classified as other.

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Obligations not otherwise itemized or categorized in the footnotes to the financial statements that are expected to be paid after one year (or the normal operating cycle, if longer), from the balance sheet date.

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