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Derivative Instruments and Hedging Activities (Details 2) (Derivatives Designated as Hedging Instruments, USD $) In Thousands, unless otherwise specified	Feb. 28, 2013	Aug. 31, 2012	Feb. 29, 2012
Derivative instruments and hedging activities
Fair Value of Asset Derivatives			$ 15
Fair Value of Liability Derivatives	2,512	2,846	2,489
Foreign Currency Forward Contracts \| Prepaid Expenses
Derivative instruments and hedging activities
Fair Value of Asset Derivatives			15
Foreign Currency Forward Contracts \| Other Current Liabilities
Derivative instruments and hedging activities
Fair Value of Liability Derivatives	11	20
Interest Rate Contracts \| Other Current Liabilities
Derivative instruments and hedging activities
Fair Value of Liability Derivatives	697	707	691
Interest Rate Contracts \| Other Long-Term Liabilities
Derivative instruments and hedging activities
Fair Value of Liability Derivatives	$ 1,804	$ 2,119	$ 1,798

Fair value of derivative asset, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position.

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- Definition

Fair value of derivative liability, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position.

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