CASH DIVIDENDS (Details) - $ / shares		1 Months Ended			3 Months Ended		9 Months Ended
	Sep. 12, 2018	Jul. 31, 2018	Apr. 30, 2018	Sep. 30, 2017	Oct. 31, 2018	Oct. 31, 2017	Oct. 31, 2018	Oct. 31, 2017
CASH DIVIDENDS
Regular cash dividend declared per common stock	$ 0.25	$ 0.25	$ 0.25	$ 1.00	$ 0.25	$ 1.00	$ 0.75	$ 1.00