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Financial Instruments and Fair Value - Schedule of Available-for-Sale Securities at Fair Value (Detail) - USD ($) $ in Thousands | Jul. 31, 2024 | Jan. 31, 2024
--- | --- | ---
Schedule of Available-for-sale Securities [Line Items] |  |
Amortized Cost | $ 98,657 | $ 106,299
Unrealized Gains | 108 | 194
Unrealized Losses | (273) | (377)
Fair Value | 98,492 | 106,116
Money market funds [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Amortized Cost | 1,299 | 296
Unrealized Gains | 0 | 0
Unrealized Losses | 0 | 0
Fair Value | 1,299 | 296
Commercial paper [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Amortized Cost | 17,857 | 30,806
Unrealized Gains | 0 | 0
Unrealized Losses | 0 | 0
Fair Value | 17,857 | 30,806
Corporate bonds [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Amortized Cost | 44,533 | 38,867
Unrealized Gains | 103 | 180
Unrealized Losses | (108) | (135)
Fair Value | 44,528 | 38,912
Asset-backed securities [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Amortized Cost | 11,003 | 15,212
Unrealized Gains | 4 | 14
Unrealized Losses | (67) | (96)
Fair Value | 10,940 | 15,130
U.S. government securities [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Amortized Cost | 23,965 | 21,118
Unrealized Gains | 1 | 0
Unrealized Losses | (98) | (146)
Fair Value | $ 23,868 | $ 20,972

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