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Income Taxes - Additional Information (Detail) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023
Income Taxes [Line Items] |  |
Provision for income tax | $ 0 | $ 0
Net deferred tax asset | 0 | 0
Federal [Member] |  |
Income Taxes [Line Items] |  |
Net operating loss carryforwards subject to expiration | $ 199,400,000 | 212,400,000
Net operating loss carryforwards expiration year | 2025 |
Net operating loss carryforwards expiration year | 2035 |
Net operating loss carryforwards, indefinitely | $ 44,000,000 |
Foreign [Member] |  |
Income Taxes [Line Items] |  |
Net operating loss carryforwards subject to expiration | 26,700,000 | $ 26,700,000
2025 Through 2027 [Member] |  |
Income Taxes [Line Items] |  |
Net operating loss carryforwards subject to expiration | 27,000,000 |
2028 Through 2037 [Member] |  |
Income Taxes [Line Items] |  |
Net operating loss carryforwards subject to expiration | $ 128,000,000 |

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