DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Schedule of Notional Amounts of Outstanding Derivative Positions) (Details) - Cash Flow Hedging [Member] - USD ($) $ in Thousands	Nov. 30, 2018	Aug. 31, 2018
Derivative [Line Items]
Derivative Liability, Notional Amount	$ 86,599	$ 88,674
Union Bank [Member]
Derivative [Line Items]
Derivative Liability, Notional Amount	35,700	35,700
Citibank [Member]
Derivative [Line Items]
Derivative Liability, Notional Amount	26,925	27,825
Scotiabank [Member]
Derivative [Line Items]
Derivative Liability, Notional Amount	$ 23,974	$ 25,149