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Note 7 - Property and Equipment, Intangible Assets and Goodwill (Details) - Property and Equipment (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Nov. 20, 2013
Aug. 28, 2013
Note 7 - Property and Equipment, Intangible Assets and Goodwill (Details) - Property and Equipment [Line Items]    
Balance $ 414,121 $ 405,585
Less accumulated depreciation and amortization (218,989) (215,066)
Property and equipment, net 195,132 190,519
Intangible assets, net 25,183 25,517
Goodwill 2,169 2,169
Land [Member]
    
Note 7 - Property and Equipment, Intangible Assets and Goodwill (Details) - Property and Equipment [Line Items]    
Balance 63,509 62,191
Restaurant Equipment and Furnishings [Member]
    
Note 7 - Property and Equipment, Intangible Assets and Goodwill (Details) - Property and Equipment [Line Items]    
Balance 121,325 116,664
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 1 year  
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 173,231 172,342
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 39,298 39,108
Furniture and Fixtures [Member]
    
Note 7 - Property and Equipment, Intangible Assets and Goodwill (Details) - Property and Equipment [Line Items]    
Balance 7,672 7,466
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 9,086 7,814
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 25,183 25,517
Intangible assets, net 21 years  
Goodwill $ 2,169 $ 2,169