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Income Tax - Additional Information (Detail) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2017
Income Tax Disclosure [Line Items] |  |  |  |
Provision for income taxes | $ 59 | $ 48 | $ 0 |
Net operating loss carryforwards |  |  |  | $ 1,100
Tax credit carry forward | $ 30,000 |  |  |
Percentage of stock owned by shareholder | 5.00% |  |  |
Cumulative loss position period | 3 years | 3 years |  |
Valuation allowance against net deferred tax assets | full valuation allowance | full valuation allowance |  |
Percentage of increase of stock owned By shareholder | 50.00% |  |  |
Testing Period In which Shareholding Increase By Shareholder Considered | 3 years |  |  |
Valuation allowance deferred tax asset increase amount | $ 75,300 |  |  |
Years of statute of limitations by major tax Jurisdictions | 3 years |  |  |
Current tax year subject for examination | 2021 2022 2023 |  |  |
Tax year remaining open | 2016 |  |  |
U.S Federal [Member] |  |  |  |
Income Tax Disclosure [Line Items] |  |  |  |
Net operating loss carryforwards | $ 224,200 |  |  |
State [Member] |  |  |  |
Income Tax Disclosure [Line Items] |  |  |  |
Net operating loss carryforwards | $ 148,100 |  |  |
Earliest Tax Year [Member] |  |  |  |
Income Tax Disclosure [Line Items] |  |  |  |
Tax credit carryforwards expiration date | 2025 |  |  |
Latest Tax Year [Member] |  |  |  |
Income Tax Disclosure [Line Items] |  |  |  |
Tax credit carryforwards expiration date | 2044 |  |  |

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