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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Treasury Stock) (Narrative) (Details) - shares | 12 Months Ended
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Aug. 31, 2021 | Aug. 31, 2020 | Aug. 31, 2019
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES [Abstract] |  |  |
Reissued treasury shares | 96,400 | 234,370 | 63,130

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