Fair Value Measurements - Schedule of Fair Value, Measure on Recurring Basis, Unobservable Input Reconciliation (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2026	Mar. 31, 2025
Fixed Maturity Securities, Available-For-Sale
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	$ 150,917	$ 77,920
Total losses for the period recognized in net investment gains	(62)	(110)
Issuances		0
Settlements		0
Purchases	11,266	5,164
Sales/Disposals	(334)	(199)
Total unrealized losses for the period recognized in accumulated comprehensive (loss) income	(2,337)	682
Ending balance	159,450	83,457
Total losses for the period recognized in net investment gains attributable to the change in unrealized gains or losses relating to assets held as of period end		0
Mortgage Loans
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	9,902	26,490
Total losses for the period recognized in net investment gains	(814)	(66)
Issuances		5
Settlements		(10,417)
Purchases	0	0
Sales/Disposals	0	0
Total unrealized losses for the period recognized in accumulated comprehensive (loss) income	0	0
Ending balance	$ 9,088	16,012
Total losses for the period recognized in net investment gains attributable to the change in unrealized gains or losses relating to assets held as of period end		$ (84)

Amount of unrealized gain (loss) recognized in income from asset measured at fair value on recurring basis using unobservable input (level 3) and still held.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount of gain (loss) recognized in income from asset measured at fair value on recurring basis using unobservable input (level 3).

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Amount of gain (loss) recognized in other comprehensive income (OCI) from asset measured at fair value on recurring basis using unobservable input (level 3).

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Amount of issuances of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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Amount of purchases of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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Amount of sale of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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Amount of settlement of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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Fair value of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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