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Cash Equivalents and Short-Term Investments (Tables) | 6 Months Ended
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Jul. 31, 2023
Cash, Cash Equivalents, and Short-Term Investments [Abstract] |
Schedule of Cash Equivalents and Short-term Investments | The following tables summarize the Company’s cash equivalents and short-term investments (in thousands):
| As of July 31, 2023
Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Estimated Fair Value
Cash Equivalents |  |  |  |  |  |  |
Money market funds | $ | 12,667 |  |  | $ | — |  |  | $ | — |  |  | $ | 12,667 |
Total cash equivalents | 12,667 |  |  | — |  |  | — |  |  | 12,667 |
Short-Term Investments |  |  |  |  |  |  |
U.S. government treasury securities | 96,024 |  |  | 1 |  |  | (245) |  |  | 95,780 |
U.S. government agency securities | 11,928 |  |  | — |  |  | (46) |  |  | 11,882 |
Commercial paper | 9,941 |  |  | — |  |  | — |  |  | 9,941 |
Corporate debt securities | 3,957 |  |  | — |  |  | (4) |  |  | 3,953 |
Asset-backed securities | 2,812 |  |  | — |  |  | (7) |  |  | 2,805 |
Total short-term investments | 124,662 |  |  | 1 |  |  | (302) |  |  | 124,361 |
Total | $ | 137,329 |  |  | $ | 1 |  |  | $ | (302) |  |  | $ | 137,028 |
| As of January 31, 2023
Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Estimated Fair Value
Cash Equivalents |  |  |  |  |  |  |
Money market funds | $ | 29,239 |  |  | $ | — |  |  | $ | — |  |  | $ | 29,239 |
Corporate debt securities | $ | 1,122 |  |  | $ | — |  |  | $ | — |  |  | 1,122 |
Total cash equivalents | 30,361 |  |  | — |  |  | — |  |  | 30,361 |
Short-Term Investments |  |  |  |  |  |  |
U.S. government treasury securities | 71,981 |  |  | 1 |  |  | (729) |  |  | 71,253 |
U.S. government agency securities | 7,839 |  |  | 3 |  |  | (1) |  |  | 7,841 |
Commercial paper | 31,500 |  |  | — |  |  | — |  |  | 31,500 |
Corporate debt securities | 11,952 |  |  | — |  |  | (50) |  |  | 11,902 |
Asset-backed securities | 5,391 |  |  | — |  |  | (31) |  |  | 5,360 |
Total short-term investments | 128,663 |  |  | 4 |  |  | (811) |  |  | 127,856 |
Total | $ | 159,024 |  |  | $ | 4 |  |  | $ | (811) |  |  | $ | 158,217 |
Summary of Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value | The Company’s gross unrealized losses and fair values for short-term investments that were in an unrealized loss position as of July 31, 2023 and January 31, 2023, aggregated by investment category and the length of time that individual securities have been in a continuous loss position were as follows (in thousands):
| As of July 31, 2023
| Less Than 12 Months |  | 12 Months or Greater |  | Total
| Unrealized Losses |  | Fair Value |  | Unrealized Losses |  | Fair Value |  | Unrealized Losses |  | Fair Value
U.S. government treasury securities | $ | (60) |  |  | $ | 57,460 |  |  | $ | (185) |  |  | $ | 25,750 |  |  | $ | (245) |  |  | $ | 83,210 |
U.S. government agency securities | (46) |  |  | 11,882 |  |  | — |  |  | — |  |  | (46) |  |  | 11,882 |
Corporate debt securities | (3) |  |  | 2,953 |  |  | (1) |  |  | 999 |  |  | (4) |  |  | 3,952 |
Asset-backed securities | (5) |  |  | 1,811 |  |  | (2) |  |  | 994 |  |  | (7) |  |  | 2,805 |
Total | $ | (114) |  |  | $ | 74,106 |  |  | $ | (188) |  |  | $ | 27,743 |  |  | $ | (302) |  |  | $ | 101,849 |
| As of January 31, 2023
| Less Than 12 Months |  | 12 Months or Greater |  | Total
| Unrealized Losses |  | Fair Value |  | Unrealized Losses |  | Fair Value |  | Unrealized Losses |  | Fair Value
U.S. government treasury securities | $ | (729) |  |  | $ | 64,397 |  |  | $ | — |  |  | $ | — |  |  | $ | (729) |  |  | $ | 64,397 |
U.S. government agency securities | (1) |  |  | 1,918 |  |  | — |  |  | — |  |  | (1) |  |  | 1,918 |
Corporate debt securities | (49) |  |  | 8,909 |  |  | (1) |  |  | 1,999 |  |  | (50) |  |  | 10,908 |
Asset-backed securities | (31) |  |  | 5,359 |  |  | — |  |  | — |  |  | (31) |  |  | 5,359 |
Total | $ | (810) |  |  | $ | 80,583 |  |  | $ | (1) |  |  | $ | 1,999 |  |  | $ | (811) |  |  | $ | 82,582 |

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