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Fair Value Measurements and Financial Instruments - Additional Information (Detail) - USD ($) | 1 Months Ended | 3 Months Ended | 9 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | ---
Oct. 31, 2023 | Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Dec. 31, 2024 | Oct. 27, 2023 | Dec. 31, 2022
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |  |  |  |  |  |  |
Fair value measurement transfer between Level 1 and Level 2 |  | $ 0 |  | $ 0 |  | $ 0 |  |
Fair value measurement transfer Level 3 |  | $ 0 |  | $ 0 |  | $ 0 |  |
Common stock, par value |  | $ 0.001 |  | $ 0.001 |  | $ 0.001 |  |
Warrants exercise price per share |  | $ 4,915 |  | $ 4,915 |  | $ 4,915 |  |
Accrued interest income from short term bank deposits |  | $ 100,000 | $ 100,000 | $ 400,000 | $ 300,000 |  |  |
Accrued interest income from long term certificates of deposit |  | $ 100,000 | $ 200,000 | $ 400,000 | $ 500,000 |  |  |
Preferred Stock Warrants |  |  |  |  |  |  |  |
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |  |  |  |  |  |  |
Warrants to purchase shares | 811 |  |  |  |  |  | 811 |
Aggregate purchase price of warrants | $ 5,000,000 |  |  |  |  |  |  |
Common stock, par value | $ 0.001 |  |  |  |  |  |  |
Warrants exercise price per share | $ 4,915 |  |  |  |  |  |  |
Expiration date | Oct. 30, 2033 |  |  |  |  |  |  |
Number of shares of common stock issuable upon exercise and conversion of warrants | 540,666 |  |  |  |  |  |  |
Convertible Preferred Stock |  |  |  |  |  |  |  |
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |  |  |  |  |  |  |
Preferred stock shares issued | 811 |  |  |  |  |  | 811 | 12,340
Preferred stock, par value | $ 0.001 |  |  |  |  |  |  |

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