DERIVATIVES AND RISK MANAGEMENT (Derivative Liabilities) (Details) - USD ($) $ in Thousands		May. 31, 2015	Aug. 31, 2014
Derivatives, Fair Value [Line Items]
Derivative liabilities (accrued expenses and other payables)	[1]	$ 2,974	$ 1,503
Commodity | Designated
Derivatives, Fair Value [Line Items]
Derivative liabilities (accrued expenses and other payables)		242	6
Commodity | Not designated
Derivatives, Fair Value [Line Items]
Derivative liabilities (accrued expenses and other payables)		603	162
Foreign exchange | Designated
Derivatives, Fair Value [Line Items]
Derivative liabilities (accrued expenses and other payables)		951	325
Foreign exchange | Not designated
Derivatives, Fair Value [Line Items]
Derivative liabilities (accrued expenses and other payables)		$ 1,178	$ 1,010

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