Fair Value - Level 3 Assets (Details) - Level 3 - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Roll forward of level 3 fair value measurements on a recurring basis
Beginning balance	$ 14,670	$ 22,616	$ 27,935	$ 30,857
Included in earnings	12	(205)	(1,015)	(815)
Included in other comprehensive income (loss)	(505)	144	(545)	515
Purchases	2,765	0	3,581	5,782
Sales	(243)	(1,599)	(5,815)	(5,492)
Transfers into Level 3	14,263	7,754	27,081	23,243
Transfers out of Level 3	(4,118)	(6,599)	(24,378)	(31,979)
Ending balance	26,844	22,111	26,844	22,111
Available-for-sale securities:
Roll forward of level 3 fair value measurements on a recurring basis
Beginning balance	14,535	22,610	27,754	30,357
Included in earnings	4	(205)	(994)	(801)
Included in other comprehensive income (loss)	(505)	144	(545)	515
Purchases	2,765	0	3,581	5,782
Sales	(149)	(1,599)	(5,677)	(5,492)
Transfers into Level 3	14,263	7,754	27,054	23,225
Transfers out of Level 3	(4,118)	(6,599)	(24,378)	(31,481)
Ending balance	26,795	22,105	26,795	22,105
Available-for-sale securities: \| Corporate debt securities
Roll forward of level 3 fair value measurements on a recurring basis
Beginning balance	478	6,176	3,939	6,268
Included in earnings	(31)	21	(130)	51
Included in other comprehensive income (loss)	12	45	(8)	12
Purchases	2	0	818	3,085
Sales	(107)	(1,252)	(4,321)	(2,044)
Transfers into Level 3	0	1,139	1,023	4,615
Transfers out of Level 3	0	(3,074)	(967)	(8,932)
Ending balance	354	3,055	354	3,055
Available-for-sale securities: \| Collateralized debt obligations
Roll forward of level 3 fair value measurements on a recurring basis
Beginning balance				0
Included in earnings				(4)
Included in other comprehensive income (loss)				0
Purchases				700
Sales				(696)
Transfers into Level 3				0
Transfers out of Level 3				0
Ending balance		0		0
Available-for-sale securities: \| Commercial mortgage-backed securities
Roll forward of level 3 fair value measurements on a recurring basis
Beginning balance	12,962	16,434	23,021	24,089
Included in earnings	36	(226)	(863)	(848)
Included in other comprehensive income (loss)	(466)	99	(472)	503
Purchases	2,763	0	2,763	1,997
Sales	(2)	(347)	(1,278)	(2,734)
Transfers into Level 3	12,248	5,331	22,783	16,403
Transfers out of Level 3	(3,659)	(3,525)	(22,072)	(21,644)
Ending balance	23,882	17,766	23,882	17,766
Available-for-sale securities: \| Residential mortgage-backed securities
Roll forward of level 3 fair value measurements on a recurring basis
Beginning balance	1,095	0	794	0
Included in earnings	(1)	0	(1)	0
Included in other comprehensive income (loss)	(51)	0	(65)	0
Purchases	0	0	0	0
Sales	(40)	0	(78)	(18)
Transfers into Level 3	2,015	1,284	3,248	2,207
Transfers out of Level 3	(459)	0	(1,339)	(905)
Ending balance	2,559	1,284	2,559	1,284
Equity securities \| Equity securities
Roll forward of level 3 fair value measurements on a recurring basis
Beginning balance	135	6	181	500
Included in earnings	8	0	(21)	(14)
Included in other comprehensive income (loss)	0	0	0	0
Purchases	0	0	0	0
Sales	(94)	0	(138)	0
Transfers into Level 3	0	0	27	18
Transfers out of Level 3	0	0	0	(498)
Ending balance	$ 49	$ 6	$ 49	$ 6

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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- Definition

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 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 transfer of financial instrument classified as an asset into level 3 of the fair value hierarchy.

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Amount of transfers of financial instrument classified as an asset out of level 3 of the fair value hierarchy.

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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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