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Financial investments (Details) - USD ($) | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2023 | Dec. 31, 2022
Summary of Investment Holdings [Line Items] |  |
Amortized Cost | $ 150,782,326 | $ 178,781,549
Held-to-Maturity Securities [Member] |  |
Summary of Investment Holdings [Line Items] |  |
Amortized Cost | 150,782,326 | 178,781,549
Unrealized Gains | 0 | 0
Unrealized Losses | (603,760) | (1,127,925)
Fair Value | $ 150,178,566 | $ 177,653,624

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