Financial Derivatives (Schedule Of Derivative Instruments, Effect On Other Comprehensive Income (Loss)) (Details) - Foreign Currency Forward Contracts [Member] - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
May. 31, 2015	May. 31, 2014	May. 31, 2015	May. 31, 2014
Derivatives, Fair Value [Line Items]
Amount of Gain/(Loss) Recognized in OCI on Derivatives	$ 384	$ 150	$ 3,597	$ (790)
Foreign currency forward contracts, tax expense (benefit)	$ 235	$ 128	$ 2,283	$ (471)

The effective portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments that was recognized in other comprehensive income during the current period.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4C

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624171-113959

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration