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Fair Value Measurements (Schedule Of Financial Assets And Liabilities Measured At Fair Value) (Details) (USD $) In Thousands, unless otherwise specified	Feb. 28, 2015	Aug. 31, 2014	Feb. 28, 2014	Aug. 31, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	$ 167,165us-gaap_CashAndCashEquivalentsAtCarryingValue	$ 171,842us-gaap_CashAndCashEquivalentsAtCarryingValue	$ 165,509us-gaap_CashAndCashEquivalentsAtCarryingValue	$ 151,927us-gaap_CashAndCashEquivalentsAtCarryingValue
Derivative assets	3,411us-gaap_DerivativeFairValueOfDerivativeAsset	900us-gaap_DerivativeFairValueOfDerivativeAsset	59us-gaap_DerivativeFairValueOfDerivativeAsset
Derivative liabilities	(393)us-gaap_DerivativeFairValueOfDerivativeLiability	(400)us-gaap_DerivativeFairValueOfDerivativeLiability	(278)us-gaap_DerivativeFairValueOfDerivativeLiability
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	167,165us-gaap_CashAndCashEquivalentsAtCarryingValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member	171,842us-gaap_CashAndCashEquivalentsAtCarryingValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member	165,509us-gaap_CashAndCashEquivalentsAtCarryingValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	3,411us-gaap_DerivativeFairValueOfDerivativeAsset / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member	900us-gaap_DerivativeFairValueOfDerivativeAsset / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member	59us-gaap_DerivativeFairValueOfDerivativeAsset / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member
Derivative liabilities	$ (393)us-gaap_DerivativeFairValueOfDerivativeLiability / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member	$ (400)us-gaap_DerivativeFairValueOfDerivativeLiability / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member	$ (278)us-gaap_DerivativeFairValueOfDerivativeLiability / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member

X

- Definition

Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Cash

-URI http://asc.fasb.org/extlink&oid=6506951



Reference 2: http://www.xbrl.org/2003/role/presentationRef

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Fair value before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset.

+ References

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