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Income Taxes (Schedule Of Deferred Income Tax Liabilities And Assets) (Details) (USD $) | Sep. 28, 2013 | Sep. 29, 2012
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Income Taxes [Abstract] |  |
Property and equipment tax/book differences | $ 96,989,000 | $ 86,915,000
Property tax method | 1,384,000 | 1,441,000
Total deferred tax liabilities | 98,373,000 | 88,356,000
Insurance reserves | 8,957,000 | 7,927,000
Advance payments on purchases contracts | 797,000 | 699,000
Vacation accrual | 2,560,000 | 2,420,000
State tax credits | 1,358,000 | 316,000
Inventory | 2,323,000 | 1,836,000
Deferred compensation | 2,784,000 | 2,220,000
Other | 824,000 | 1,603,000
Total deferred tax assets | 19,603,000 | 17,021,000
Net deferred tax liabilities | $ 78,770,000 | $ 71,335,000

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