DERIVATIVES AND RISK MANAGEMENT (Effective Portion of Derivatives Designated as Cash Flow Hedging Instruments Recognized in Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Thousands	12 Months Ended
	Aug. 31, 2015	Aug. 31, 2014	Aug. 31, 2013
Derivative Instruments, Gain (Loss) [Line Items]
Gain, (loss), net of taxes for effective portion of derivatives designated as cash flow hedging instruments recognized in AOCI	$ (2,467)	$ (1,848)	$ 221
Commodity
Derivative Instruments, Gain (Loss) [Line Items]
Gain, (loss), net of taxes for effective portion of derivatives designated as cash flow hedging instruments recognized in AOCI	(635)	(54)	(218)
Foreign exchange
Derivative Instruments, Gain (Loss) [Line Items]
Gain, (loss), net of taxes for effective portion of derivatives designated as cash flow hedging instruments recognized in AOCI	$ (1,832)	$ (1,794)	$ 439