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Investments - Additional Information (Details)	3 Months Ended	9 Months Ended
	Sep. 30, 2025 USD ($) FinancialInstrument shares	Sep. 30, 2025 USD ($) FinancialInstrument	Dec. 31, 2024 USD ($) FinancialInstrument
Schedule of Available-for-sale Securities
Credit Loss Change, Available-for-Sale Investments		$ 0
Financial instruments measured on non-recurring basis | FinancialInstrument	0	0	0
Fair value transfer, investments between levels	$ 0
Fixed maturities, available-for-sale	246,499,000	$ 246,499,000	$ 281,001,000
Surplus Note
Schedule of Available-for-sale Securities
Fixed maturities, available-for-sale	$ 6,000,000	$ 6,000,000
Warrants issued to purchase common stock | shares	18,497

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