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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Schedule of Goodwill) (Details) - USD ($) $ in Thousands | 12 Months Ended |  |
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Aug. 31, 2017 | Aug. 31, 2016 | Aug. 31, 2015
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES [Abstract] |  |  |
Goodwill | $ 35,642 | $ 35,637 | $ 35,871
Goodwill, Translation Adjustments | $ 5 |  |

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