Fair Value Measurements - Schedule of Available-for-Sale Fixed Maturity Securities Measured at Fair Value on a Recurring Basis (Details) - Recurring basis - Available-for-sale fixed maturity securities and equity securities - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	$ 2	$ 17	$ 5	$ 11
Transfers out of Level 3	0	0	0	0
Transfers in to Level 3	0	0	0	0
Purchases	0	0	0	0
Sales	0	0	0	0
Maturities, calls and paydowns	0	0	0	0
Amortization of discount	0	0	0	0
Total gains or losses (realized/unrealized)-Included in earnings	(1)	(12)	(4)	(6)
Total gains or losses (realized/unrealized)-Included in other comprehensive income	0	0	0	0
Ending balance	$ 1	$ 5	$ 1	$ 5