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
	Nov. 20, 2013	Nov. 21, 2012
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	$ 430	$ 90
Net (gain) loss on disposition of property and equipment	51	(242)
	$ 481	$ (152)
Effect on EPS:
Basic (in Dollars per share)	$ (0.05)	$ 0.01
Assuming dilution (in Dollars per share)	$ (0.01)	$ 0.01
Dispostion of Property Plant and Equipment Impairment [Member]
Effect on EPS:
Basic (in Dollars per share)	$ (0.01)	$ 0.01