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Note J - Commitments (Details Textual) | 12 Months Ended
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Sep. 29, 2018 USD ($) | Sep. 30, 2017 USD ($) | Sep. 24, 2016 USD ($)
Operating Leases, Rent Expense, Total | $ 21,760,000 | $ 20,354,000 | $ 17,481,000
Accrued Insurance | 9,200,000 | 8,100,000 |
Letters of Credit Outstanding, Amount | $ 9,275,000 | 8,675,000 |
Entity Number of Employees | 1,700 |  |
Self Insurance Reserve | $ 2,058,000 | $ 2,382,000 |

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