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STOCK BASED COMPENSATION (Summary of Total Fair Market Value of Restricted Stock Awards and Units Vested) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Aug. 31, 2017 | Aug. 31, 2016 | Aug. 31, 2015
STOCK BASED COMPENSATION [Abstract] |  |  |
Total fair market value of restricted stock awards and units vested | $ 10,135 | $ 10,139 | $ 13,192

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- Definition Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(2) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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