SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Summary of Income Tax Receivables) (Details) - USD ($) $ in Thousands	May 31, 2017	Aug. 31, 2016
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES [Abstract]
Income Taxes Receivable, Prepaid expenses and other current assets	$ 5,958	$ 6,402
Income Taxes Receivable, Other non-current assets	10,026	10,376
Total amount of Income tax receivables reported	$ 15,984	$ 16,778