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Organization and Description of Business - Additional Information (Detail) $ in Thousands |  |  |  | 12 Months Ended |
--- | --- | --- | --- | --- | ---
Jun. 28, 2024 | Jun. 18, 2024 | Sep. 21, 2020 USD ($) | Dec. 31, 2024 USD ($) | Dec. 31, 2023 USD ($)
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items] |  |  |  |  |
Reverse stock split ratio | 0.05 |  |  |  |
Reverse stock-split, description |  |  |  | On June 18, 2024, the Company’s stockholders approved a reverse stock split of its Class A common stock, Class B common stock and Class C common stock (collectively, the "common stock") at a ratio ranging from 1-for-10 to 1-for-20, with the exact ratio determined by the Company’s Board of Directors. On June 28, 2024, the Company's Board of Directors approved a 1-for-20 reverse stock split (Reverse Split) of its common stock that became effective on July 10, 2024. |
Proceeds from private placement |  |  | $ 100,000 |  |
Accumulated deficit |  |  |  | $ 1,965,924 | $ 1,757,778
Maximum [Member] |  |  |  |  |
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items] |  |  |  |  |
Reverse stock split ratio |  | 0.1 |  |  |
Minimum [Member] |  |  |  |  |
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items] |  |  |  |  |
Reverse stock split ratio |  | 0.05 |  |  |
Initial Public Offering [Member] |  |  |  |  |
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items] |  |  |  |  |
Proceeds from issuance of common stock |  |  | $ 822,267 |  |

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