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Financial Instruments and Fair Value - Schedule of Available-for-Sale Securities at Fair Value (Detail) - USD ($) $ in Thousands | Jan. 31, 2024 | Jan. 31, 2023
--- | --- | ---
Schedule of Available-for-sale Securities [Line Items] |  |
Amortized Cost | $ 106,299 | $ 101,686
Unrealized Gains | 194 | 116
Unrealized Losses | (377) | (608)
Fair Value | 106,116 | 101,194
Money market funds [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Amortized Cost | 296 | 7,872
Unrealized Gains | 0 | 0
Unrealized Losses | 0 | 0
Fair Value | 296 | 7,872
Commercial paper [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Amortized Cost | 30,806 | 18,333
Unrealized Gains | 0 | 0
Unrealized Losses | 0 | 0
Fair Value | 30,806 | 18,333
Corporate bonds [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Amortized Cost | 38,867 | 23,472
Unrealized Gains | 180 | 50
Unrealized Losses | (135) | (224)
Fair Value | 38,912 | 23,298
Asset-backed securities [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Amortized Cost | 15,212 | 18,753
Unrealized Gains | 14 | 44
Unrealized Losses | (96) | (149)
Fair Value | 15,130 | 18,648
U.S. government securities [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Amortized Cost | 21,118 | 33,256
Unrealized Gains | 0 | 22
Unrealized Losses | (146) | (235)
Fair Value | $ 20,972 | $ 33,043

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