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CASH, CASH EQUIVALENTS AND INVESTMENTS (Tables) | 3 Months Ended
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Apr. 30, 2023
CASH, CASH EQUIVALENTS AND INVESTMENTS |
Schedule of available-for-sale securities | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | April 30, 2023
​ | ​ | ​ | ​ | ​ | Allowance for | ​ | Gross | ​ | Gross | ​ | Estimated
​ | ​ | Amortized | ​ | Credit | ​ | Unrealized | ​ | Unrealized | ​ | Fair
​ |  | Cost |  | Losses |  | Gains |  | Losses |  | Value
U.S. Treasury notes: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Due in one to two years | ​ | $ | 15,014 | ​ | $ | — | ​ | $ | — | ​ | $ | 37 | ​ | $ | 14,977
Due in two to three years | ​ | ​ | 15,399 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 15,399
Totals | ​ | $ | 30,413 | ​ | $ | — | ​ | $ | — | ​ | $ | 37 | ​ | $ | 30,376

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- Definition Tabular disclosure of the reconciliation of available-for-sale securities from cost basis to fair value. + References No definition available. + Details
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