Composition Of Certain Financial Statement Captions (Schedule Of Prepaid Expenses And Other Current Assets) (Details) (USD $) In Thousands | Sep. 30, 2011 | Sep. 24, 2010 |
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| Prepaid assets | $ 19,915 | $ 16,191 |
| Other current assets | 7,667 | 1,650 |
| Income tax receivable | 7,829 | 3,497 |
| Assets held for sale | 1,466 | 5,592 |
| Prepaid expenses and other current assets | $ 36,877 | $ 26,930 |
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- Definition Composition Of Certain Financial Statement Captions [Abstract]
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- Definition Represents the sum of the carrying value of all the Assets Held-for-Sale at the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Carrying amount as of the balance sheet date of income taxes previously overpaid to tax authorities (such as U.S. Federal, state and local tax authorities) representing refunds of overpayments or recoveries based on agreed-upon resolutions of disputes. Also called income tax refund receivable. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Aggregate carrying amount, as of the balance sheet date, of current assets not separately disclosed in the balance sheet. Current assets are expected to be realized or consumed within one year (or the normal operating cycle, if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The total of the amounts paid in advance for capitalized costs that will be expensed with the passage of time or the occurrence of a triggering event, and will be charged against earnings within one year or the normal operating cycle, if longer, and the aggregate carrying amount of current assets, as of the balance sheet date, not separately presented elsewhere in the balance sheet. Current assets are expected to be realized or consumed within one year (or the normal operating cycle, if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Sum of the amounts paid in advance for capitalized costs that will be expensed with the passage of time or the occurrence of a triggering event, and will be charged against earnings within one year or the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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