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Investments (Schedule of Unrealized Loss on Investments) (Details) - USD ($) | Jun. 30, 2023 | Dec. 31, 2022
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Investments [Abstract] |  |
Aggregate Unrealized Losses, Loss duration less than one year | $ 516,647 | $ 4,816,103
Aggregate Unrealized Losses, Loss duration greater than one year | 9,484,009 | 8,217,959
Aggregate Unrealized Losses, Total | 10,000,656 | 13,034,062
Aggregate Fair Value of Investments, Loss duration less than one year | 40,487,017 | 77,701,146
Aggregate Fair Value of Investments, Loss duration greater than one year | 111,100,115 | 76,643,586
Aggregate Fair Value of Investments, Total | $ 151,587,132 | $ 154,344,732

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