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Fair Value Measurements - Summary of Fair Value Hierarchy for Financial Liabilities Measured At Fair Value on a Recurring Basis (Detail) - Level 3 [Member] - USD ($) | Sep. 30, 2025 | Jun. 30, 2025 | Mar. 31, 2025 | Dec. 31, 2024 | Sep. 30, 2024 | Jun. 30, 2024 | Mar. 31, 2024 | Dec. 31, 2023
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Liabilities [Abstract] |  |  |  |  |  |  |  |
Litigation financing | $ 64,716,855 |  |  | $ 56,950,377 |  |  |  |
2022 Warrants | 7,706,773 |  |  | 2,060,773 |  |  |  |
March 2023 Warrants | 3,708,615 |  |  | 1,910,950 |  |  |  |
December 2023 Warrants | 2,785,926 |  |  | 827,036 |  |  |  |
March 2023 Note Conversion Option | 986,000 |  |  | 2,745,000 |  |  |  |
December 2023 Note Conversion Option | 488,000 |  |  | 307,000 |  |  |  |
Total of fair valued liabilities | $ 80,392,169 | $ 71,647,337 | $ 61,578,198 | $ 64,801,136 | $ 63,336,413 | $ 82,975,903 | $ 74,147,022 | $ 74,247,485

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