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Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jul. 31, 2023 | Jul. 31, 2022 | Jul. 31, 2023 | Jul. 31, 2022
Income Taxes [Line Items] |  |  |  |
Income tax (benefit) provision | $ (3,404) | $ 3,436 | $ (1,758) | $ 3,846
Unrecognized tax benefits | 22,100 |  | $ 22,100 |
U.S. federal tax authorities [Member] | Earliest tax year [Member] |  |  |  |
Income Taxes [Line Items] |  |  |  |
Income tax examination, year |  |  | 2020 |
U.S. federal tax authorities [Member] | Latest tax year [Member] |  |  |  |
Income Taxes [Line Items] |  |  |  |
Income tax examination, year |  |  | 2023 |
U.S. state tax authorities [Member] | Earliest tax year [Member] |  |  |  |
Income Taxes [Line Items] |  |  |  |
Income tax examination, year |  |  | 2019 |
U.S. state tax authorities [Member] | Latest tax year [Member] |  |  |  |
Income Taxes [Line Items] |  |  |  |
Income tax examination, year |  |  | 2023 |
Foreign tax authorities [Member] | Earliest tax year [Member] |  |  |  |
Income Taxes [Line Items] |  |  |  |
Income tax examination, year |  |  | 2016 |
Foreign tax authorities [Member] | Latest tax year [Member] |  |  |  |
Income Taxes [Line Items] |  |  |  |
Income tax examination, year |  |  | 2023 |
Oculii Corp [Member] |  |  |  |
Income Taxes [Line Items] |  |  |  |
Income tax (benefit) provision |  |  | $ 3,100 |
Valuation allowance | $ 3,600 |  | $ 3,600 |

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- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-2 + Details
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