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Credit Arrangements (Schedule Of Outstanding Long-Term Debt) (Details) (USD $) In Thousands, unless otherwise specified	May 31, 2013	Aug. 31, 2012	May 31, 2012
Credit Arrangements [Abstract]
BSI Term Note	$ 1,071	$ 4,285	$ 5,357
Current portion of long-term debt	1,071	4,285	4,286
Less current portion	(1,071)	(4,285)	(4,286)
Total long-term debt			$ 1,071

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Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Carrying amount of long-term debt, net of unamortized discount or premium, scheduled to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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