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Preferred Stock and Stockholders' Equity - Schedule of Company's Outstanding Warrants to Purchase Shares of Common Stocky (Detail) - Common Stock Warrants and Pre-Funded Warrants [Member] - $ / shares | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Class of Warrant or Right [Line Items] |  |
Number of Shares of Common Stock Issuable | 32,425,811 | 33,052,744
2023 Securities Purchase Agreement Common Warrants |  |
Class of Warrant or Right [Line Items] |  |
Number of Shares of Common Stock Issuable | 15,151,518 |
Warrants exercise price | $ 3 |
Expiration Date | May 05, 2028 |
January 2021 Pre-funded Warrants |  |
Class of Warrant or Right [Line Items] |  |
Number of Shares of Common Stock Issuable | 509,117 |
Warrants exercise price | $ 0.001 |
Expiration Date | Dec. 31, 2030 |
2023 Securities Purchase Agreement Pre-funded Warrants |  |
Class of Warrant or Right [Line Items] |  |
Number of Shares of Common Stock Issuable | 3,844,153 |
Warrants exercise price | $ 0.001 |
2024 Securities Purchase Agreement Pre-funded Warrants |  |
Class of Warrant or Right [Line Items] |  |
Number of Shares of Common Stock Issuable | 7,989,516 |
Warrants exercise price | $ 0.001 |
2024 Underwritten Offering Pre-funded Warrants |  |
Class of Warrant or Right [Line Items] |  |
Number of Shares of Common Stock Issuable | 4,931,507 |
Warrants exercise price | $ 0.001 |

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