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POST EMPLOYMENT PLANS (Summary of Other Post Employment Plans) (Details) - Other Post-Employment Plans [Member] - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Aug. 31, 2017 | Aug. 31, 2016 | Aug. 31, 2015
Accrued Salaries And Benefits [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Other Post Employment Plans |  | $ 425 | $ 358 |
Other Long-Term Liability [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Other Post Employment Plans |  | 2,720 | 2,395 |
Restricted Cash Held [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Other Post Employment Plans | [1] | 2,493 | 2,188 |
Operating Expense [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Operating Expenses |  | $ 1,017 | $ 1,026 | $ 1,722
[1] | With some locations, local statutes require the applicable Company subsidiary to deposit cash in its own name with designated fund managers. The funds earn interest which the Company recognizes as interest income.

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