Note 8 - Impairment of Long-Lived Assets, Discontinued Operations and Property Held for Sale (Details) - Impairment Charges to Income From Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Feb. 12, 2014	Feb. 13, 2013	Feb. 12, 2014	Feb. 13, 2013
Note 8 - Impairment of Long-Lived Assets, Discontinued Operations and Property Held for Sale (Details) - Impairment Charges to Income From Operations [Line Items]
Provision for asset impairments			$ 1,850	$ 90
Net (gain) loss on disposition of property and equipment	16	(1,321)	67	(1,563)
			$ 1,850	$ (1,473)
Effect on EPS:
Basic (in Dollars per share)	$ (0.08)	$ 0.01	$ (0.13)	$ 0.01
Assuming dilution (in Dollars per share)			$ (0.06)	$ 0.05
Dispostion of Property Plant and Equipment Impairment [Member]
Effect on EPS:
Basic (in Dollars per share)			$ (0.06)	$ 0.05