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Income Taxes - Narrative (Detail) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Income Tax Disclosure [Line Items] |  |  |
Increase (decrease) in valuation allowance | $ (7,900) | $ 1,500 |
Net operating loss carryforwards | 293,100 |  |
Unrecognized tax benefits | 12,400 | 12,101 | $ 11,339
Unrecognized tax benefits would affect the effective tax rate | 0 |  |
Interest related to unrecognized tax benefits | 0 | 0 |
Penalties related to unrecognized tax benefits | 0 | $ 0 |
Federal |  |  |
Income Tax Disclosure [Line Items] |  |  |
Net operating loss carryforwards | 400 |  |
Federal | Research And Development Tax Credits |  |  |
Income Tax Disclosure [Line Items] |  |  |
Tax credit carryforward amount | $ 26,500 |  |
Federal | Minimum |  |  |
Income Tax Disclosure [Line Items] |  |  |
Net operating loss carryforwards, expiration year | 2025 |  |
Federal | Minimum | Research And Development Tax Credits |  |  |
Income Tax Disclosure [Line Items] |  |  |
Tax credit carryforward amount, expiration year | 2025 |  |
Federal | Maximum | Research And Development Tax Credits |  |  |
Income Tax Disclosure [Line Items] |  |  |
Tax credit carryforward amount, expiration year | 2044 |  |
California and Other States |  |  |
Income Tax Disclosure [Line Items] |  |  |
Net operating loss carryforwards | $ 262,900 |  |
California and Other States | Minimum |  |  |
Income Tax Disclosure [Line Items] |  |  |
Net operating loss carryforwards, expiration year | 2025 |  |
California and Other States | Maximum |  |  |
Income Tax Disclosure [Line Items] |  |  |
Net operating loss carryforwards, expiration year | 2041 |  |
California State | Research And Development Tax Credits |  |  |
Income Tax Disclosure [Line Items] |  |  |
Tax credit carryforward amount | $ 21,800 |  |
Foreign |  |  |
Income Tax Disclosure [Line Items] |  |  |
Net operating loss carryforwards | $ 0 |  |

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- Definition Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-3 + Details
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