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INVESTMENTS (Details) - USD ($) $ in Thousands	6 Months Ended
	Jul. 31, 2019	Jul. 31, 2018	Jan. 31, 2019
Investments Schedule [Abstract]
Retained Earnings, Undistributed Earnings from Equity Method Investees	$ 12,400		$ 12,000
Proceeds from Equity Method Investment, Distribution	$ 0	$ 1,003
Debt Securities, Held-to-maturity, Maturity, Rolling within One Year, Weighted Average Yield			2.29%

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Weighted average yield of investment in debt security measured at amortized cost (held-to-maturity), maturing in next rolling fiscal year following latest fiscal year. For interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date.

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-Section II
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Amount of distribution received from equity method investee for return on investment, classified as operating activities. Excludes distribution for return of investment, classified as investing activities.

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-Topic 230
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Amount of consolidated retained earnings that represent undistributed (not yet received) earnings from 50% or less owned persons accounted for by the equity method (equity method investees).

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