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Note 7 - Property and Equipment, Intangible Assets and Goodwill (Details) - Property and Equipment (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Aug. 28, 2013
Aug. 29, 2012
Note 7 - Property and Equipment, Intangible Assets and Goodwill (Details) - Property and Equipment [Line Items]    
Balance $ 405,585 $ 379,377
Less accumulated depreciation and amortization (215,066) (205,744)
Property and equipment, net 190,519 173,633
Intangible assets, net 25,517 26,679
Goodwill 2,169 195
Land [Member]
    
Note 7 - Property and Equipment, Intangible Assets and Goodwill (Details) - Property and Equipment [Line Items]    
Balance 62,191 59,159
Restaurant Equipment and Furnishings [Member]
    
Note 7 - Property and Equipment, Intangible Assets and Goodwill (Details) - Property and Equipment [Line Items]    
Balance 116,664 109,039
Restaurant Equipment and Furnishings [Member] | Minimum [Member]
    
Note 7 - Property and Equipment, Intangible Assets and Goodwill (Details) - Property and Equipment [Line Items]    
Estimated useful lives 3 years  
Restaurant Equipment and Furnishings [Member] | Maximum [Member]
    
Note 7 - Property and Equipment, Intangible Assets and Goodwill (Details) - Property and Equipment [Line Items]    
Estimated useful lives 15 years  
Building [Member]
    
Note 7 - Property and Equipment, Intangible Assets and Goodwill (Details) - Property and Equipment [Line Items]    
Balance 172,342 167,346
Building [Member] | Minimum [Member]
    
Note 7 - Property and Equipment, Intangible Assets and Goodwill (Details) - Property and Equipment [Line Items]    
Estimated useful lives 20 years  
Building [Member] | Maximum [Member]
    
Note 7 - Property and Equipment, Intangible Assets and Goodwill (Details) - Property and Equipment [Line Items]    
Estimated useful lives 33 years  
Leaseholds and Leasehold Improvements [Member]
    
Note 7 - Property and Equipment, Intangible Assets and Goodwill (Details) - Property and Equipment [Line Items]    
Balance 39,108 32,913
Furniture and Fixtures [Member]
    
Note 7 - Property and Equipment, Intangible Assets and Goodwill (Details) - Property and Equipment [Line Items]    
Balance 7,466 7,030
Furniture and Fixtures [Member] | Minimum [Member]
    
Note 7 - Property and Equipment, Intangible Assets and Goodwill (Details) - Property and Equipment [Line Items]    
Estimated useful lives 3 years  
Furniture and Fixtures [Member] | Maximum [Member]
    
Note 7 - Property and Equipment, Intangible Assets and Goodwill (Details) - Property and Equipment [Line Items]    
Estimated useful lives 10 years  
Construction in Progress [Member]
    
Note 7 - Property and Equipment, Intangible Assets and Goodwill (Details) - Property and Equipment [Line Items]    
Balance 7,814 3,890
Relating to Property, Plant and Equipment (Member)
    
Note 7 - Property and Equipment, Intangible Assets and Goodwill (Details) - Property and Equipment [Line Items]    
Intangible assets, net 25,517 26,679
Intangible assets, net 21 years  
Goodwill $ 2,169 $ 195