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Credit Arrangements (Schedule Of Principal Payments Due On Long-Term Debt) (Details) (USD $) In Thousands, unless otherwise specified	Feb. 29, 2012	Aug. 31, 2011	Feb. 28, 2011
Credit Arrangements [Abstract]
1 year	$ 4,286
2 years	2,143
Principal payments due	$ 6,429	$ 8,571	$ 10,714

Including current and noncurrent portions, aggregate carrying amount of long-term borrowings as of the balance sheet date. May include notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, which had initial maturities beyond one year or beyond the normal operating cycle, if longer, and after deducting unamortized discount or premiums, if any.

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