SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Income Taxes) (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended
	Nov. 30, 2016	Nov. 30, 2014	Aug. 31, 2016
Loss Contingencies [Line Items]
Provisional assessments, includes taxes, penalties and interest related to withholding taxes		$ 2,500
Additional provisional assessment		$ 5,200
Income taxes receivable	$ 18,341		$ 16,778
Deferred tax assets, net	$ 1,900
Effective income tax rate change	31.50%
Colombia Subsidiary [Member]
Loss Contingencies [Line Items]
Effective income tax rate change, Foreign	0.60%
Unknown Country [Member]
Loss Contingencies [Line Items]
Income taxes receivable	$ 3,400
Deferred tax assets, net	$ 1,900
Federal and State Jurisdicition [Member]
Loss Contingencies [Line Items]
Effective income tax rate change	1.40%