SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Summary of Income Tax Receivables) (Details) - USD ($) $ in Thousands	Feb. 28, 2018	Aug. 31, 2017
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES [Abstract]
Income Taxes Receivable, Prepaid expenses and other current assets	$ 4,096	$ 6,403
Income Taxes Receivable, Other non-current assets	15,329	10,492
Total amount of income tax receivables reported	$ 19,425	$ 16,895