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Credit Arrangements (Schedule Of Outstanding Long-Term Debt) (Details) (USD $) In Thousands, unless otherwise specified	Feb. 28, 2013	Aug. 31, 2012	Feb. 29, 2012
Credit Arrangements [Abstract]
BSI Term Note	$ 2,143	$ 4,285	$ 6,429
Less current portion	(2,143)	(4,285)	(4,286)
Total long-term debt			$ 2,143

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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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Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

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