Investments - Schedule of net gains (losses) on investments (Details) - USD ($)	3 Months Ended
	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