INVENTORIES (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Aug. 31, 2017	Aug. 31, 2016	Aug. 31, 2015
Inventory Disclosure [Abstract]
Raw materials	$ 116,800	$ 77,900
Inventory write-downs	$ 21,529	$ 15,555	$ 37,652