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Note 15 - Segment Reporting (Details) - Summary of long-lived assets, revenues, and income before income taxes (USD $) In Thousands, unless otherwise specified | Aug. 31, 2013 | Aug. 25, 2012
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Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |
Location | $ 812,051 |  | $ 752,854 |
United States [Member] |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |
Location | 769,121 |  | 706,379 |
Europe, Canada, Mexico and Nicaragua [Member] |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |
Location | $ 42,930 | [1] | $ 46,475 | [1]
[1] | No country accounts for greater than 10% of total long-lived assets, revenues or income before income taxes.

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- Definition Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e9038-108599 + Details
Name: | us-gaap_NoncurrentAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Details
Name: | us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration