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Fair Value Measurements (Tables) | 12 Months Ended
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Jan. 31, 2024
Fair Value Disclosures [Abstract] |
Fair Value, Assets Measured on Recurring Basis | The following table summarizes information about our cash, cash equivalents, and investments by investment category for the periods presented (in thousands):
| As of January 31, 2024
| Fair Value Level |  | Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Estimated Fair Value
Assets |  |  |  |  |  |  |  |  |
Cash and cash equivalents: |  |  |  |  |  |  |  |  |
Cash |  |  | $ | 43,925 |  |  | $ | — |  |  | $ | — |  |  | $ | 43,925 |
Money market funds | Level 1 |  | 204,481 |  |  | — |  |  | — |  |  | 204,481 |
Certificates of deposit | Level 2 |  | 8,245 |  |  | — |  |  | — |  |  | 8,245 |
Total cash and cash equivalents |  |  | $ | 256,651 |  |  | $ | — |  |  | $ | — |  |  | $ | 256,651 |
Short-term investments: |  |  |  |  |  |  |  |  |
US Treasury securities | Level 1 |  | $ | 234,776 |  |  | $ | — |  |  | $ | (1,053) |  |  | $ | 233,723 |
Corporate notes and bonds | Level 2 |  | 279,248 |  |  | 12 |  |  | (1,068) |  |  | 278,192 |
US agency securities | Level 2 |  | 157,873 |  |  | 18 |  |  | (501) |  |  | 157,390 |
Total short-term investments |  |  | $ | 671,897 |  |  | $ | 30 |  |  | $ | (2,622) |  |  | $ | 669,305 |
Long-term investments: |  |  |  |  |  |  |  |  |
US Treasury securities | Level 1 |  | $ | 27,175 |  |  | $ | 121 |  |  | $ | — |  |  | $ | 27,296 |
Corporate notes and bonds | Level 2 |  | 69,970 |  |  | 279 |  |  | (67) |  |  | 70,182 |
US agency securities | Level 2 |  | 90,924 |  |  | 303 |  |  | (48) |  |  | 91,179 |
Total long-term investments |  |  | $ | 188,069 |  |  | $ | 703 |  |  | $ | (115) |  |  | $ | 188,657 |
Total assets measured at fair value |  |  | $ | 1,116,617 |  |  | $ | 733 |  |  | $ | (2,737) |  |  | $ | 1,114,613 |
| As of January 31, 2023
| Fair Value Level |  | Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Estimated Fair Value
Assets |  |  |  |  |  |  |  |  |
Cash and cash equivalents: |  |  |  |  |  |  |  |  |
Cash |  |  | $ | 35,055 |  |  | $ | — |  |  | $ | — |  |  | $ | 35,055 |
Money market funds | Level 1 |  | 102,886 |  |  | — |  |  | — |  |  | 102,886 |
Total cash and cash equivalents |  |  | $ | 137,941 |  |  | $ | — |  |  | $ | — |  |  | $ | 137,941 |
Short-term investments: |  |  |  |  |  |  |  |  |
US Treasury securities | Level 1 |  | $ | 144,392 |  |  | $ | 1 |  |  | $ | (501) |  |  | $ | 143,892 |
Commercial paper | Level 2 |  | 230,305 |  |  | 30 |  |  | (667) |  |  | 229,668 |
Corporate notes and bonds | Level 2 |  | 38,443 |  |  | 15 |  |  | (148) |  |  | 38,310 |
US agency securities | Level 2 |  | 74,060 |  |  | 3 |  |  | (349) |  |  | 73,714 |
Total short-term investments |  |  | $ | 487,200 |  |  | $ | 49 |  |  | $ | (1,665) |  |  | $ | 485,584 |
Long-term investments: |  |  |  |  |  |  |  |  |
US Treasury securities | Level 1 |  | $ | 192,337 |  |  | $ | — |  |  | $ | (2,460) |  |  | $ | 189,877 |
Corporate notes and bonds | Level 2 |  | 233,946 |  |  | 178 |  |  | (2,029) |  |  | 232,095 |
US agency securities | Level 2 |  | 101,844 |  |  | 27 |  |  | (921) |  |  | 100,950 |
Total long-term investments |  |  | $ | 528,127 |  |  | $ | 205 |  |  | $ | (5,410) |  |  | $ | 522,922 |
Total assets measured at fair value |  |  | $ | 1,153,268 |  |  | $ | 254 |  |  | $ | (7,075) |  |  | $ | 1,146,447 |

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- Definition Tabular disclosure of assets, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, by class that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 + Details
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