DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Schedule of Notional Amounts of Outstanding Derivative Positions) (Details) - USD ($) $ in Thousands	Nov. 30, 2017	Aug. 31, 2017
Cash Flow Hedging [Member]
Derivative [Line Items]
Derivative Liability, Notional Amount	$ 73,687	$ 75,512
Union Bank [Member] | Cash Flow Hedging [Member]
Derivative [Line Items]
Derivative Liability, Notional Amount	35,700	35,700
Citibank [Member] | Cash Flow Hedging [Member]
Derivative [Line Items]
Derivative Liability, Notional Amount	25,063	26,088
Scotiabank [Member] | Cash Flow Hedging [Member]
Derivative [Line Items]
Derivative Liability, Notional Amount	12,924	$ 13,724
Colombia Subsidiary [Member] | Citibank [Member] | Forward Foreign Exchange Contract 1 [Member] | Not Designated as Hedging Instrument [Member] | Fair Value Hedging [Member]
Derivative [Line Items]
Derivative Liability, Notional Amount	1,000
Colombia Subsidiary [Member] | Citibank [Member] | Forward Foreign Exchange Contract 2 [Member] | Not Designated as Hedging Instrument [Member] | Fair Value Hedging [Member]
Derivative [Line Items]
Derivative Liability, Notional Amount	1,000
Colombia Subsidiary [Member] | Citibank [Member] | Forward Foreign Exchange Contract 3 [Member] | Not Designated as Hedging Instrument [Member] | Fair Value Hedging [Member]
Derivative [Line Items]
Derivative Liability, Notional Amount	1,000
Colombia Subsidiary [Member] | Citibank [Member] | Forward Foreign Exchange Contract 4 [Member] | Not Designated as Hedging Instrument [Member] | Fair Value Hedging [Member]
Derivative [Line Items]
Derivative Liability, Notional Amount	$ 1,000