Note 1 - Summary of Significant Accounting Policies (Details) - Stock Options, Valuation Assumptions	12 Months Ended
	Aug. 31, 2013	Aug. 25, 2012	Aug. 27, 2011
Stock Options, Valuation Assumptions [Abstract]
Risk-free interest rate	1.24%	1.54%	1.98%
Expected dividend yield	0.41%	0.56%	0.60%
Expected life in years	7 years 153 days	7 years 142 days	7 years 116 days
Expected volatility	33.40%	33.80%	34.80%