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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

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