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Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jul. 31, 2024 | Jul. 31, 2023 | Jul. 31, 2024 | Jul. 31, 2023
Income Taxes [Line Items] |  |  |  |
Income tax expense (benefit) | $ 747 | $ (3,404) | $ 1,505 | $ (1,758)
Unrecognized tax benefits | 23,000 |  | 23,000 |
Decrease in unrecognized tax benefits is reasonably possible | $ 9,000 |  | $ 9,000 |
U.S. federal tax authorities [Member] | Earliest tax year [Member] |  |  |  |
Income Taxes [Line Items] |  |  |  |
Income tax examination, year |  |  | 2021 |
U.S. federal tax authorities [Member] | Latest tax year [Member] |  |  |  |
Income Taxes [Line Items] |  |  |  |
Income tax examination, year |  |  | 2024 |
U.S. state tax authorities [Member] | Earliest tax year [Member] |  |  |  |
Income Taxes [Line Items] |  |  |  |
Income tax examination, year |  |  | 2020 |
U.S. state tax authorities [Member] | Latest tax year [Member] |  |  |  |
Income Taxes [Line Items] |  |  |  |
Income tax examination, year |  |  | 2024 |
Foreign tax authorities [Member] | Earliest tax year [Member] |  |  |  |
Income Taxes [Line Items] |  |  |  |
Income tax examination, year |  |  | 2017 |
Foreign tax authorities [Member] | Latest tax year [Member] |  |  |  |
Income Taxes [Line Items] |  |  |  |
Income tax examination, year |  |  | 2024 |
Oculii Corp [Member] |  |  |  |
Income Taxes [Line Items] |  |  |  |
Valuation allowance |  |  |  | $ 3,600

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