UNCONSOLIDATED AFFILIATES (Narrative) (Details)	12 Months Ended
	Aug. 31, 2018 USD ($) m²	Aug. 31, 2017 USD ($)	Aug. 31, 2016 USD ($)	Aug. 31, 2018 ft²
Variable Interest Entity [Line Items]
Rent expense	$ 17,212,000	$ 15,637,000	$ 15,926,000
GolfPark Plaza, S.A [Member]
Variable Interest Entity [Line Items]
Area of property	1,670			17,976
Operating leases, Term	15 years
Renewal term	5 years
Rent expense	$ 105,700	$ 105,700	$ 105,700