DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Schedule of Notional Amounts of Outstanding Derivative Positions) (Details) - USD ($) $ in Thousands	May 31, 2016	Aug. 31, 2015
Cash Flow Hedging [Member]
Derivative [Line Items]
Derivative Liability, Notional Amount	$ 64,771	$ 71,745
Scotiabank [Member] | Cash Flow Hedging [Member]
Derivative [Line Items]
Derivative Liability, Notional Amount	33,558	37,458
Citibank N.A. [Member] | Cash Flow Hedging [Member]
Derivative [Line Items]
Derivative Liability, Notional Amount	$ 31,213	34,287
Citibank N.A. [Member] | Forward Foreign Exchange Contracts [Member] | Fair Value Hedging [Member]
Derivative [Line Items]
Derivative Liability, Notional Amount		$ 3,750