Note 6 - Property and Equipment, Intangible Assets and Goodwill (Details) - Property and Equipment (USD $) In Thousands, unless otherwise specified	3 Months Ended
Nov. 19, 2014	Aug. 27, 2014
Note 6 - Property and Equipment, Intangible Assets and Goodwill (Details) - Property and Equipment [Line Items]
Balance	$ 444,260us-gaap_PropertyPlantAndEquipmentGross	$ 441,306us-gaap_PropertyPlantAndEquipmentGross
Less accumulated depreciation and amortization	(233,214)	(228,427)
Property and equipment, net	211,046us-gaap_PropertyPlantAndEquipmentNet	212,879us-gaap_PropertyPlantAndEquipmentNet
Intangible assets, net	23,681	24,014
Goodwill	1,681us-gaap_Goodwill	1,681us-gaap_Goodwill
Land [Member]
Note 6 - Property and Equipment, Intangible Assets and Goodwill (Details) - Property and Equipment [Line Items]
Balance	69,767	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	133,998	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	182,104	180,922
Leaseholds and Leasehold Improvements [Member]
Note 6 - Property and Equipment, Intangible Assets and Goodwill (Details) - Property and Equipment [Line Items]
Balance	42,717	40,835
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	7,859	7,537
Construction in Progress [Member]
Note 6 - Property and Equipment, Intangible Assets and Goodwill (Details) - Property and Equipment [Line Items]
Balance	7,815	10,313
Relating to Property, Plant and Equipment [Member]
Note 6 - Property and Equipment, Intangible Assets and Goodwill (Details) - Property and Equipment [Line Items]
Intangible assets, net	23,681	24,014
Intangible assets, net	21 years
Goodwill	$ 1,681	$ 1,681

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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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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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