Note 6 - Property and Equipment, Intangible Assets and Goodwill (Details) - Property and Equipment (USD $) In Thousands, unless otherwise specified	9 Months Ended
May 06, 2015	Aug. 27, 2014
Note 6 - Property and Equipment, Intangible Assets and Goodwill (Details) - Property and Equipment [Line Items]
Balance	$ 441,842us-gaap_PropertyPlantAndEquipmentGross	$ 441,919us-gaap_PropertyPlantAndEquipmentGross
Less accumulated depreciation and amortization	(236,345)	(228,427)
Property and equipment, net	205,497us-gaap_PropertyPlantAndEquipmentNet	213,492us-gaap_PropertyPlantAndEquipmentNet
Intangible assets, net	23,014	24,014
Intangible assets, net	21 years
Goodwill	1,643us-gaap_Goodwill	1,681us-gaap_Goodwill
Leasehold and leasehold improvements	441,842us-gaap_PropertyPlantAndEquipmentGross	441,919us-gaap_PropertyPlantAndEquipmentGross
Land [Member]
Note 6 - Property and Equipment, Intangible Assets and Goodwill (Details) - Property and Equipment [Line Items]
Balance	65,218	69,767
Leasehold and leasehold improvements	65,218	69,767
Restaurant Equipment and Furnishings [Member] \| Minimum [Member]
Note 6 - Property and Equipment, Intangible Assets and Goodwill (Details) - Property and Equipment [Line Items]
Estimated useful lives (years)	3 years
Restaurant Equipment and Furnishings [Member] \| Maximum [Member]
Note 6 - Property and Equipment, Intangible Assets and Goodwill (Details) - Property and Equipment [Line Items]
Estimated useful lives (years)	15 years
Restaurant Equipment and Furnishings [Member]
Note 6 - Property and Equipment, Intangible Assets and Goodwill (Details) - Property and Equipment [Line Items]
Balance	140,570	131,932
Leasehold and leasehold improvements	140,570	131,932
Building [Member] \| Minimum [Member]
Note 6 - Property and Equipment, Intangible Assets and Goodwill (Details) - Property and Equipment [Line Items]
Estimated useful lives (years)	20 years
Building [Member] \| Maximum [Member]
Note 6 - Property and Equipment, Intangible Assets and Goodwill (Details) - Property and Equipment [Line Items]
Estimated useful lives (years)	33 years
Building [Member]
Note 6 - Property and Equipment, Intangible Assets and Goodwill (Details) - Property and Equipment [Line Items]
Balance	184,534	181,535
Leasehold and leasehold improvements	184,534	181,535
Leaseholds and Leasehold Improvements [Member]
Note 6 - Property and Equipment, Intangible Assets and Goodwill (Details) - Property and Equipment [Line Items]
Balance	42,785	40,835
Leasehold and leasehold improvements	42,785	40,835
Leasehold and leasehold improvements	Lesser of lease term or estimated useful life
Furniture and Fixtures [Member] \| Minimum [Member]
Note 6 - Property and Equipment, Intangible Assets and Goodwill (Details) - Property and Equipment [Line Items]
Estimated useful lives (years)	3 years
Furniture and Fixtures [Member] \| Maximum [Member]
Note 6 - Property and Equipment, Intangible Assets and Goodwill (Details) - Property and Equipment [Line Items]
Estimated useful lives (years)	10 years
Furniture and Fixtures [Member]
Note 6 - Property and Equipment, Intangible Assets and Goodwill (Details) - Property and Equipment [Line Items]
Balance	7,964	7,537
Leasehold and leasehold improvements	7,964	7,537
Construction in Progress [Member]
Note 6 - Property and Equipment, Intangible Assets and Goodwill (Details) - Property and Equipment [Line Items]
Balance	771	10,313
Leasehold and leasehold improvements	$ 771	$ 10,313

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Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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