STOCKHOLDERS' EQUITY (Schedule of Dividends) (Details) - $ / shares						3 Months Ended		9 Months Ended		12 Months Ended
	Aug. 31, 2017	Feb. 28, 2017	Feb. 01, 2017	Feb. 29, 2016	Feb. 03, 2016	May 31, 2017	May 31, 2016	May 31, 2017	May 31, 2016	Aug. 31, 2016
Dividends Payable [Line Items]
Amount								$ 0.70	$ 0.70
2017 Dividend Declared [Member]
Dividends Payable [Line Items]
Declared								Feb. 01, 2017
Amount			$ 0.70
2016 Dividend Declared [Member]
Dividends Payable [Line Items]
Declared								Feb. 03, 2016
Amount					$ 0.70
2017 First Dividend Paid [Member]
Dividends Payable [Line Items]
Record Date								Feb. 15, 2017
Date Paid								Feb. 28, 2017
Payment Amount		$ 0.35
2017 Second Dividend Paid [Member]
Dividends Payable [Line Items]
Record Date								Aug. 15, 2017
Date Payable								Aug. 31, 2017
2017 Second Dividend Paid [Member] | Scenario, Forecast [Member]
Dividends Payable [Line Items]
Payment Amount	$ 0.35
2016 First Dividend Paid [Member]
Dividends Payable [Line Items]
Record Date								Feb. 15, 2016
Date Paid								Feb. 29, 2016
Payment Amount				$ 0.35
2016 Second Dividend Paid [Member]
Dividends Payable [Line Items]
Record Date								Aug. 15, 2016
Date Paid								Aug. 31, 2016
Payment Amount										$ 0.35