Note 11 - Impairment of Long-Lived Assets, Store Closings, Discontinued Operations and Property Held for Sale (Details) - Impairment Charges to Income from Operations - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Aug. 26, 2015	Aug. 27, 2014	Aug. 28, 2013
Impairment Charges to Income from Operations [Abstract]
Provision for asset impairments	$ 636	$ 2,498	$ 615
Net gain on disposition of property and equipment	(3,994)	(2,357)	(1,723)
	$ (3,358)	$ 141	$ (1,108)
Effect on EPS:
Basic (in Dollars per share)	$ 0.12	$ 0	$ 0.04
Assuming dilution (in Dollars per share)	$ 0.12	$ 0	$ 0.04