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Supplementary Balance Sheet Information (Details) (USD $)	Sep. 29, 2012	Sep. 24, 2011
Accrued expenses and current portion of other long-term liabilities
Property, payroll, and other taxes payable	$ 18,191,260	$ 15,775,321
Salaries, wages and bonuses payable	25,350,513	24,130,758
Self-insurance liabilities:
Interest	19,132,734	20,375,692
Other	3,312,445	4,209,392
Total	92,682,243	89,322,063
Employee group insurance [Member]
Self-insurance liabilities:
Self-insurance liabilities	4,344,008	4,053,146
Workers' compensation insurance [Member]
Self-insurance liabilities:
Self-insurance liabilities	16,708,500	15,210,845
General liability insurance [Member]
Self-insurance liabilities:
Self-insurance liabilities	$ 5,642,783	$ 5,566,909

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Carrying value as of the balance sheet date of obligations incurred and payable for real and property taxes. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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