DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Schedule of Notional Amounts of Outstanding Derivative Positions) (Details) - Cash Flow Hedging [Member] - USD ($) $ in Thousands	May 31, 2019	Aug. 31, 2018
Derivative [Line Items]
Derivative Liability, Notional Amount	$ 80,270	$ 88,674
Union Bank [Member]
Derivative [Line Items]
Derivative Liability, Notional Amount	35,487	35,700
Citibank N.A. [Member]
Derivative [Line Items]
Derivative Liability, Notional Amount	25,125	27,825
Scotiabank [Member]
Derivative [Line Items]
Derivative Liability, Notional Amount	$ 19,658	$ 25,149