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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tax Receivables) (Narrative) (Details) - USD ($)
$ in Thousands
May 31, 2020
Aug. 31, 2019
Tax Receivables [Line Items]    
Value added tax receivable $ 25,959 $ 24,330
Income taxes receivable 28,736 25,390
Unknown Country [Member]    
Tax Receivables [Line Items]    
Value added tax receivable 6,200 5,100
Deferred tax assets, net 2,800 2,700
Income taxes receivable $ 9,800 $ 7,800