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Investments - Schedule of Unrealized Loss on available-for-sale securities (Details) - USD ($) | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Aggregate Unrealized Losses |  |
Loss duration of less than one year | $ 114,935 | $ 587,357
Loss duration of greater than one year | 227,089 | 1,381,116
Total | 342,024 | 1,968,473
Aggregate Fair Value of Investments |  |
Loss duration of less than one year | 2,990,364 | 46,365,022
Loss duration of greater than one year | 5,461,055 | 32,602,844
Total | $ 8,451,419 | $ 78,967,866

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