DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Schedule of Cash Flow Hedging Instruments, Statements of Financial Performance and Financial Position, Location) (Details) - Interest Expense [Member] - Cash Flow Hedging [Member] - USD ($) $ in Thousands		12 Months Ended
		Aug. 31, 2019	Aug. 31, 2018	Aug. 31, 2017
Derivative [Line Items]
Derivative, gain (loss) on derivative, Net		$ 5,243	$ 5,081	$ 5,193
Interest Rate Contract [Member]
Derivative [Line Items]
Derivative, gain (loss) on derivative, Net	[1]	4,732	4,100	3,605
Interest Rate Swaps [Member]
Derivative [Line Items]
Derivative, gain (loss) on derivative, Net	[2]	$ 511	$ 981	$ 1,588

[1] This amount is representative of the interest expense recognized on the underlying hedged transactions.

[2] This amount is representative of the interest expense recognized on the interest rate swaps designated as cash flow hedging instruments.