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Investments - Schedule of net gains (losses) on investments (Details) - USD ($) | 3 Months Ended
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Mar. 31, 2025 | Mar. 31, 2024
Net Investment Income [Line Items] |  |
Net realized losses | $ (1,726) | $ (92,357)
Net unrealized (losses) gains | (136,253) | 818,748
Net (losses) gains on investments | (137,979) | 726,391
Realized (Losses) Gains Fixed-maturity securities |  |
Net Investment Income [Line Items] |  |
Gross realized gains | 788 | 84
Gross realized losses | (2,514) | (2,951)
Total fixed-maturity securities | (1,726) | (2,867)
Realized (Losses) Gains Equity securities |  |
Net Investment Income [Line Items] |  |
Gross realized gains | 0 | 5,120
Gross realized losses | 0 | (94,610)
Total equity securities | 0 | (89,490)
Unrealized (Losses) Gains Equity Securities |  |
Net Investment Income [Line Items] |  |
Gross gains | 0 | 641,722
Gross losses | (193,330) | 0
Total equity securities | (193,330) | 641,722
Unrealized (Losses) Gains Other Investments |  |
Net Investment Income [Line Items] |  |
Gross losses | 0 | 0
Gross gains | 57,077 | 177,026
Total other investments | $ 57,077 | $ 177,026

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(2)(a)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477250/944-220-S99-1 + Details
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