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Cash Equivalents and Short-Term Investments - Summary of Cash Equivalents and Short-term Investments (Details) - USD ($) $ in Thousands | Jul. 31, 2023 | Jan. 31, 2023
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Schedule Of Cash Cash Equivalents And Short Term Investments |  |
Cash equivalents, amortized cost | $ 12,667 | $ 30,361
Cash equivalents, estimate fair value | 12,667 | 30,361
Short-Term Investments |  |
Amortized Cost | 124,662 | 128,663
Gross Unrealized Gains | 1 | 4
Gross Unrealized Losses | (302) | (811)
Estimated Fair Value | 124,361 | 127,856
Amortized Cost | 137,329 | 159,024
Estimated Fair Value | 137,028 | 158,217
U.S. government treasury securities |  |
Short-Term Investments |  |
Amortized Cost | 96,024 | 71,981
Gross Unrealized Gains | 1 | 1
Gross Unrealized Losses | (245) | (729)
Estimated Fair Value | 95,780 | 71,253
U.S. government agency securities |  |
Short-Term Investments |  |
Amortized Cost | 11,928 | 7,839
Gross Unrealized Gains | 0 | 3
Gross Unrealized Losses | (46) | (1)
Estimated Fair Value | 11,882 | 7,841
Commercial paper |  |
Short-Term Investments |  |
Amortized Cost | 9,941 | 31,500
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | 0 | 0
Estimated Fair Value | 9,941 | 31,500
Corporate debt securities |  |
Short-Term Investments |  |
Amortized Cost | 3,957 | 11,952
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (4) | (50)
Estimated Fair Value | 3,953 | 11,902
Asset-backed securities |  |
Short-Term Investments |  |
Amortized Cost | 2,812 | 5,391
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (7) | (31)
Estimated Fair Value | 2,805 | 5,360
Money market funds |  |
Schedule Of Cash Cash Equivalents And Short Term Investments |  |
Cash equivalents, amortized cost | 12,667 | 29,239
Cash equivalents, estimate fair value | $ 12,667 | 29,239
Corporate debt securities |  |
Schedule Of Cash Cash Equivalents And Short Term Investments |  |
Cash equivalents, amortized cost |  | 1,122
Cash equivalents, estimate fair value |  | $ 1,122

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