DERIVATIVES AND RISK MANAGEMENT (Derivative Assets) (Details) - USD ($) $ in Thousands		May 31, 2017	Aug. 31, 2016
Derivatives, Fair Value [Line Items]
Derivative assets (other current assets)	[1]	$ 3,317	$ 2,736
Commodity | Designated
Derivatives, Fair Value [Line Items]
Derivative assets (other current assets)		13	4
Commodity | Not designated
Derivatives, Fair Value [Line Items]
Derivative assets (other current assets)		324	584
Foreign exchange | Designated
Derivatives, Fair Value [Line Items]
Derivative assets (other current assets)		606	1,398
Foreign exchange | Not designated
Derivatives, Fair Value [Line Items]
Derivative assets (other current assets)		$ 2,374	$ 750

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