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Marketable Securities (Tables) | 3 Months Ended
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Apr. 30, 2024
Investments, Debt and Equity Securities [Abstract] |
Schedule of Available-For-Sale Marketable Securities | The following is a summary of available-for-sale marketable securities, excluding those securities classified within cash and cash equivalents on the condensed consolidated balance sheets:
| April 30, 2024
(in thousands) | Amortized Cost |  | Unrealized Gains |  | Unrealized Losses |  | Fair value
Corporate bonds | $ | 95,301 |  |  | $ | 14 |  |  | $ | (72) |  |  | $ | 95,243 |
Municipal bonds | 995 |  |  | — |  |  | (1) |  |  | 994 |
U.S. government and agency securities | 158,542 |  |  | — |  |  | (254) |  |  | 158,288 |
Certificates of deposit | 64,129 |  |  | 18 |  |  | (35) |  |  | 64,112 |
Commercial paper | 164,739 |  |  | 19 |  |  | (131) |  |  | 164,627 |
Marketable securities | $ | 483,706 |  |  | $ | 51 |  |  | $ | (493) |  |  | $ | 483,264 |
| January 31, 2024
(in thousands) | Amortized Cost |  | Unrealized Gains |  | Unrealized Losses |  | Fair value
Corporate bonds | $ | 98,642 |  |  | $ | 71 |  |  | $ | (10) |  |  | $ | 98,703 |
Municipal bonds | 982 |  |  | 3 |  |  | — |  |  | 985 |
U.S. government and agency securities | 185,464 |  |  | 140 |  |  | (33) |  |  | 185,571 |
Certificates of deposit | 46,496 |  |  | 48 |  |  | (1) |  |  | 46,543 |
Commercial paper | 166,595 |  |  | 155 |  |  | (21) |  |  | 166,729 |
Marketable securities | $ | 498,179 |  |  | $ | 417 |  |  | $ | (65) |  |  | $ | 498,531 |

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