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CASH, CASH EQUIVALENTS AND INVESTMENTS (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Apr. 30, 2023 | Jan. 31, 2023
Cash and Cash Equivalents |  |
Accrued dividends | $ 0.5 | $ 0.3
Held-to-maturity Securities |  |
Cash and Cash Equivalents |  |
Maturity period | 1 year | 1 year
Weighted average annual interest rates of CDs (as a percent) | 5.20% | 2.50%
Accrued interest | $ 0.7 | $ 1.8

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