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Investments - Schedule of equity securities (Details) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2025 | Dec. 31, 2024
Net Investment Income [Line Items] |  |
Cost | $ 13,527,554 | $ 13,527,554
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (3,424,379) | (3,231,049)
Estimated Fair Value | 10,103,175 | 10,296,505
Estimated Fair Value | 4,437,733 | 4,380,656
Preferred Stock |  |
Net Investment Income [Line Items] |  |
Cost | 9,750,322 | 9,750,322
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (2,668,147) | (2,422,617)
Estimated Fair Value | 7,082,175 | 7,327,705
Fixed income exchange traded funds |  |
Net Investment Income [Line Items] |  |
Cost | 3,711,232 | 3,711,232
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (756,232) | (808,432)
Estimated Fair Value | 2,955,000 | 2,902,800
FHLBNY common stock |  |
Net Investment Income [Line Items] |  |
Cost | 66,000 | 66,000
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | 0 | 0
Estimated Fair Value | 66,000 | 66,000
Hedge fund |  |
Net Investment Income [Line Items] |  |
Cost | 1,987,040 | 1,987,040
Gross Unrealized Gains | 2,450,693 | 2,393,616
Estimated Fair Value | $ 4,437,733 | $ 4,380,656

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