PROPERTY AND EQUIPMENT (Summary of Total Interest Capitalized) (Details) - USD ($) $ in Thousands	12 Months Ended
	Aug. 31, 2017	Aug. 31, 2016	Aug. 31, 2015
PROPERTY AND EQUIPMENT [Abstract]
Total interest capitalized	$ 8,262	$ 7,380
Interest capitalized	$ 447	$ 1,082	$ 1,055