Note 11 - 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						4 Months Ended		12 Months Ended
	May 07, 2014	Feb. 12, 2014	Nov. 20, 2013	May 08, 2013	Feb. 13, 2013	Nov. 21, 2012	Aug. 27, 2014	Aug. 28, 2013	Aug. 27, 2014	Aug. 28, 2013	Aug. 29, 2012
Note 11 - 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									$ 2,498	$ 615	$ 451
Net loss (gain) on disposition of property and equipment									(2,357)	(1,723)	278
									$ 141	$ (1,108)	$ 729
Effect on EPS:
Basic (in Dollars per share)	$ 0.06	$ (0.08)	$ (0.05)	$ 0.09	$ 0.01	$ 0.01	$ (0.06)	$ 0.01	$ (0.12)	$ 0.11	$ 0.24
Assuming dilution (in Dollars per share)										$ 0.04	$ (0.03)
Dispostion of Property Plant and Equipment Impairment [Member]
Effect on EPS:
Basic (in Dollars per share)										$ 0.04	$ (0.03)