POST EMPLOYMENT PLANS (Summary of Other Post Employment Plans) (Details) - USD ($) $ in Thousands		Aug. 31, 2018	Aug. 31, 2017	Aug. 31, 2016
Accrued Salaries And Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Other Post Employment Plans		$ 443	$ 425
Other Long-Term Liability [Member]
Defined Benefit Plan Disclosure [Line Items]
Other Post Employment Plans		3,077	2,720
Restricted Cash Held [Member]
Defined Benefit Plan Disclosure [Line Items]
Other Post Employment Plans	[1]	2,772	2,493
Operating Expense [Member]
Defined Benefit Plan Disclosure [Line Items]
Other Post Employment Plans		$ 1,187	$ 1,017	$ 1,026

[1] With some locations, local statutes require the applicable Company subsidiary to deposit cash in its own name with designated fund managers. The funds earn interest which the Company recognizes as interest income.