Investments in Fixed Maturity and Equity Securities - AFS Fixed Maturity Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2026	Dec. 31, 2025
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	$ 11,091
Gross Unrealized Gains	0
Gross Unrealized Losses	(55)
Investments in fixed maturity securities	11,036	$ 0
U.S. Government
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	3,172
Gross Unrealized Gains	0
Gross Unrealized Losses	(35)
Investments in fixed maturity securities	3,137	0
U.S. Corporate
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	7,297
Gross Unrealized Gains	0
Gross Unrealized Losses	0
Investments in fixed maturity securities	7,297	0
Foreign Governments
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	622
Gross Unrealized Gains	0
Gross Unrealized Losses	(20)
Investments in fixed maturity securities	$ 602	$ 0

Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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