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Commitments Rent exepense (Details) (USD $) | 12 Months Ended
--- | ---
Sep. 30, 2011 | Oct. 01, 2010 | Oct. 02, 2009
Component of Other Expense, Nonoperating [Line Items] |  |  |
Operating Leases, Rent Expense | $ 7,600,000 | $ 7,600,000 | $ 8,000,000
Operating Leases, Future Minimum Payments Due [Abstract] |  |  |
2012 | 8,247,000 |  |
2013 | 7,149,000 |  |
2014 | 6,671,000 |  |
2015 | 5,896,000 |  |
2016 | 3,883,000 |  |
Thereafter | 5,942,000 |  |
Operating Leases, Future Minimum Payments Due | 37,788,000 |  |
Other commitments due in one year | 3,400,000 |  |
Other commitments due in two yeara | $ 1,800,000 |  |

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