SHAREHOLDERS' EQUITY (Details Textuals) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2018	Jul. 31, 2018	Jan. 31, 2018	Apr. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock repurchase program, number of shares authorized to be repurchased (in shares)	4,886,353
Common Stock Dividend Percentage Rate		25.00%	25.00%	25.00%
Common Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares Paid for Tax Withholding for Share Based Compensation	332,140
Adjustments Related to Tax Withholding for Share-based Compensation	$ 23.9
Common Class A [Member] | Common Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares Paid for Tax Withholding for Share Based Compensation	18,145
Adjustments Related to Tax Withholding for Share-based Compensation	$ 1.1