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DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Schedule of Notional Amounts of Outstanding Derivative Positions) (Details) € in Thousands, TTD in Thousands, $ in Thousands | May 31, 2017 TTD | May 31, 2017 EUR (€) | May 31, 2017 USD ($) | Aug. 31, 2016 USD ($)
--- | --- | --- | --- | ---
Cash Flow Hedging [Member] |  |  |  |
Derivative [Line Items] |  |  |  |
Derivative Liability, Notional Amount |  |  | $ 91,171 | $ 62,446
Scotiabank [Member] | Cash Flow Hedging [Member] |  |  |  |
Derivative [Line Items] |  |  |  |
Derivative Liability, Notional Amount |  |  | 28,358 | 30,188
Union Bank [Member] | Cash Flow Hedging [Member] |  |  |  |
Derivative [Line Items] |  |  |  |
Derivative Liability, Notional Amount |  |  | 35,700 |
Union Bank [Member] | Forward Foreign Exchange Contracts [Member] | Fair Value Hedging [Member] |  |  |  |
Derivative [Line Items] |  |  |  |
Derivative Liability, Notional Amount |  | € 5,060 | 5,060 |
Citibank N.A. [Member] | Cash Flow Hedging [Member] |  |  |  |
Derivative [Line Items] |  |  |  |
Derivative Liability, Notional Amount |  |  | 27,113 | 32,258
Costa Rica Subsidiary [Member] | Citibank N.A. [Member] | Forward Foreign Exchange Contracts [Member] | Fair Value Hedging [Member] |  |  |  |
Derivative [Line Items] |  |  |  |
Derivative Liability, Notional Amount |  |  |  | $ 3,750
Colombia Subsidiary [Member] | Banco Colpatria [Member] | Forward Foreign Exchange Contracts [Member] | Fair Value Hedging [Member] |  |  |  |
Derivative [Line Items] |  |  |  |
Derivative Liability, Notional Amount |  |  | $ 4,500 |
Trinidad Subsidiary [Member] | Citibank N.A. [Member] | Forward Foreign Exchange Contracts [Member] | Fair Value Hedging [Member] |  |  |  |
Derivative [Line Items] |  |  |  |
Derivative Liability, Notional Amount | TTD 5,317 | € 5,317 |  |

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