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Organization - Additional Information (Detail) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | --- | ---
Cash, cash equivalents and restricted cash | $ 1,091 | $ 6,062 | $ 52,996
Accumulated deficit | $ (920,446) | $ (915,767) |
Common stock, shares outstanding | 1,601,252 | 1,601,252 |
Common Stock [Member] |  |  |
Common stock, shares outstanding | 1,601,252 |  |
Common stock reserved for future issuance | 142,745 |  |

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