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DERIVATIVES AND RISK MANAGEMENT (Effective Portion of Derivatives Designated as Cash Flow Hedging Instruments Recognized in Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Aug. 31, 2018 | Aug. 31, 2017 | Aug. 31, 2016
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Gain, (loss), net of taxes for effective portion of derivatives designated as cash flow hedging instruments recognized in AOCI | $ 48 | $ 756 | $ 1,618
Commodity |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Gain, (loss), net of taxes for effective portion of derivatives designated as cash flow hedging instruments recognized in AOCI | 0 | 210 | (204)
Foreign exchange |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Gain, (loss), net of taxes for effective portion of derivatives designated as cash flow hedging instruments recognized in AOCI | $ 48 | $ 546 | $ 1,822

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