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Short-Term Borrowings	12 Months Ended
Short-Term Borrowings	Aug. 31, 2011
Short-term Debt [Abstract]
Short-Term Borrowings	Short-Term Borrowings The Company has an unsecured, uncommitted $25 million credit line with Wells Fargo Bank, N.A. that expires on March 1, 2012. Interest rates are set by the bank at the time of borrowing. The Company had no borrowings outstanding under this facility as of August 31, 2011 and 2010. The credit agreement contains various representations and warranties, events of default and financial and other covenants, including covenants regarding maintenance of a minimum fixed charge coverage ratio and a maximum leverage ratio.