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DESCRIPTION OF THE BUSINESS AND BASIS OF PRESENTATION - Financial Instruments on a Recurring Basis (Details) - USD ($) $ in Thousands | Oct. 31, 2023 | Jan. 31, 2023
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Fair value of assets and liabilities measured on recurring and nonrecurring basis |  |
Available-for-sale-securities | $ 103,917 |
Fair value, recurring | Level 1 Inputs |  |
Fair value of assets and liabilities measured on recurring and nonrecurring basis |  |
Totals | 127,022 | $ 68,647
Fair value, recurring | Level 1 Inputs | Money market funds |  |
Fair value of assets and liabilities measured on recurring and nonrecurring basis |  |
Cash and cash equivalents | 127,022 | $ 68,647
Fair value, recurring | Level 2 Inputs |  |
Fair value of assets and liabilities measured on recurring and nonrecurring basis |  |
Totals | 103,917 |
Fair value, recurring | Level 2 Inputs | U.S. Treasury notes |  |
Fair value of assets and liabilities measured on recurring and nonrecurring basis |  |
Available-for-sale-securities | 94,700 |
Fair value, recurring | Level 2 Inputs | U.S. corporate debt security |  |
Fair value of assets and liabilities measured on recurring and nonrecurring basis |  |
Available-for-sale-securities | $ 9,217 |

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