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Share-Based Compensation Plans (Total Cost Of Share-Based Compensation) (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended | 3 Months Ended | 12 Months Ended
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Aug. 31, 2013 | Aug. 31, 2012 | Aug. 31, 2011 | Aug. 31, 2013 Performance Awards [Member] | Aug. 31, 2012 Performance Awards [Member] | Aug. 31, 2011 Performance Awards [Member] | Mar. 02, 2013 Management Stock Loans [Member] | Aug. 31, 2013 Management Stock Loans [Member] | Aug. 31, 2013 Unvested Share Awards [Member] | Aug. 31, 2012 Unvested Share Awards [Member] | Aug. 31, 2011 Unvested Share Awards [Member] | Aug. 31, 2012 Stock Options [Member] | Aug. 31, 2011 Stock Options [Member] | Aug. 31, 2013 Fully Vested Share Awards [Member] | Aug. 31, 2012 Fully Vested Share Awards [Member] | Aug. 31, 2011 Fully Vested Share Awards [Member] | Aug. 31, 2013 Compensation Cost Of The ESPP [Member] | Aug. 31, 2012 Compensation Cost Of The ESPP [Member] | Aug. 31, 2011 Compensation Cost Of The ESPP [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Compensation cost | $ 3,589 | $ 3,835 | $ 2,788 | $ 2,504 | $ 3,188 | $ 827 | $ 500 | $ 498 | $ 383 | $ 340 | $ 411 | $ 168 | $ 820 | $ 112 | $ 62 | $ 669 | $ 92 | $ 77 | $ 61

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- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph 64 -Subparagraph b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 14.F) -URI http://asc.fasb.org/extlink&oid=6793087&loc=d3e301413-122809 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph g(1) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 -Section F + Details
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