SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tax Receivables) (Narrative) (Details) - USD ($)	May 31, 2018	Aug. 31, 2017
Tax Receivables [Line Items]
Value added tax receivable	$ 27,014,000	$ 31,554,000
Income taxes receivable	21,583,000	16,895,000
Unknown Country [Member]
Tax Receivables [Line Items]
Value added tax receivable	377,000	1,200,000
Deferred tax assets, net	2,200,000	2,000,000
Income taxes receivable	$ 5,500,000	$ 4,300,000