Fair Value - Level 3 Assets (Details) - Level 3 - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Roll forward of level 3 fair value measurements on a recurring basis
Beginning balance	$ 26,453	$ 15,650	$ 24,368	$ 22,559
Included in earnings	(332)	(124)	(502)	(386)
Included in other comprehensive income (loss)	105	(80)	216	318
Purchases	5,725	1,645	8,663	3,945
Sales	(610)	(306)	(952)	(1,038)
Transfers into Level 3	14,365	1,984	22,016	3,652
Transfers out of Level 3	(3,445)	(2,371)	(11,548)	(12,652)
Ending balance	42,261	16,398	42,261	16,398
Available-for-sale securities
Roll forward of level 3 fair value measurements on a recurring basis
Beginning balance	18,485	10,951	17,034	18,780
Included in earnings	(393)	(155)	(649)	(379)
Included in other comprehensive income (loss)	105	(80)	216	318
Purchases	4,706	1,645	6,644	2,987
Sales	(526)	(306)	(868)	(1,038)
Transfers into Level 3	13,845	1,984	21,472	3,652
Transfers out of Level 3	(2,459)	(2,371)	(10,086)	(12,652)
Ending balance	33,763	11,668	33,763	11,668
Available-for-sale securities | Corporate debt securities
Roll forward of level 3 fair value measurements on a recurring basis
Beginning balance	3,908	4,503	4,506	3,686
Included in earnings	22	14	25	(14)
Included in other comprehensive income (loss)	(20)	37	21	122
Purchases	4,496	779	4,839	1,532
Sales	(521)	(100)	(823)	(745)
Transfers into Level 3	2,202	1,655	3,824	3,153
Transfers out of Level 3	(1,544)	(1,765)	(3,849)	(2,611)
Ending balance	8,543	5,123	8,543	5,123
Available-for-sale securities | Commercial mortgage-backed securities
Roll forward of level 3 fair value measurements on a recurring basis
Beginning balance	14,577	6,415	10,994	10,910
Included in earnings	(415)	(169)	(669)	(360)
Included in other comprehensive income (loss)	125	(117)	219	100
Purchases	210	866	1,805	1,455
Sales	(5)	(185)	(5)	(185)
Transfers into Level 3	11,643	329	17,648	466
Transfers out of Level 3	(915)	(606)	(4,772)	(5,853)
Ending balance	25,220	6,533	25,220	6,533
Available-for-sale securities | Residential mortgage- backed securities
Roll forward of level 3 fair value measurements on a recurring basis
Beginning balance		33	1,534	4,184
Included in earnings		0	(5)	(5)
Included in other comprehensive income (loss)		0	(24)	96
Purchases		0	0	0
Sales		(21)	(40)	(108)
Transfers into Level 3		0	0	33
Transfers out of Level 3		0	(1,465)	(4,188)
Ending balance	0	12	0	12
Equity securities | Equity securities
Roll forward of level 3 fair value measurements on a recurring basis
Beginning balance	7,968	4,699	7,334	3,779
Included in earnings	61	31	147	(7)
Included in other comprehensive income (loss)	0	0	0	0
Purchases	1,019	0	2,019	958
Sales	(84)	0	(84)	0
Transfers into Level 3	520	0	544	0
Transfers out of Level 3	(986)	0	(1,462)	0
Ending balance	$ 8,498	$ 4,730	$ 8,498	$ 4,730