DERIVATIVES AND RISK MANAGEMENT (Derivative Liabilities) (Details) (USD $) In Thousands, unless otherwise specified	Nov. 30, 2014		Aug. 31, 2014
Derivatives, Fair Value [Line Items]
Derivative liabilities (accrued expenses and other payables)	$ 2,609	[1]	$ 1,503	[1]
Commodity | Designated
Derivatives, Fair Value [Line Items]
Derivative liabilities (accrued expenses and other payables)	97		6
Commodity | Not designated
Derivatives, Fair Value [Line Items]
Derivative liabilities (accrued expenses and other payables)	467		162
Foreign exchange | Designated
Derivatives, Fair Value [Line Items]
Derivative liabilities (accrued expenses and other payables)	774		325
Foreign exchange | Not designated
Derivatives, Fair Value [Line Items]
Derivative liabilities (accrued expenses and other payables)	$ 1,271		$ 1,010

[1] Derivative assets and liabilities do not include the hedged items designated as fair value hedges.