Investments - Schedule of Selected Information about Sales of Fixed Maturities (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Investments, Debt and Equity Securities [Abstract]
Proceeds from sale	$ 184,500	$ 163,221	$ 456,567	$ 674,125
Gross realized gains	916	2,042	4,011	6,086
Gross realized losses	(7,761)	(1,856)	(16,251)	(15,824)
Unsettled trades	$ 3,200	$ 0	$ 3,200	$ 0