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Securities - Unrealized Losses (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Fair Value
Less than 12 Months	$ 58,994	$ 38,770
12 Months or More	1,071,055	1,195,131
Total	1,130,049	1,233,901
Unrealized Loss
Less than 12 Months	(863)	(376)
12 Months or More	(119,820)	(153,965)
Total	(120,683)	(154,341)
State and municipal securities
Fair Value
Less than 12 Months	28,402	27,106
12 Months or More	251,522	246,442
Total	279,924	273,548
Unrealized Loss
Less than 12 Months	(81)	(266)
12 Months or More	(34,857)	(41,174)
Total	(34,938)	(41,440)
Fair Value
Less than 12 Months	0	4,717
12 Months or More	10,701	6,131
Total	10,701	10,848
Unrealized Loss
Less than 12 Months	0	(447)
12 Months or More	(447)	(383)
Total	(447)	(830)
Corporate bonds
Fair Value
Less than 12 Months	9,826	4,254
12 Months or More	63,546	74,566
Total	73,372	78,820
Unrealized Loss
Less than 12 Months	(685)	(53)
12 Months or More	(5,621)	(8,636)
Total	(6,306)	(8,689)
U.S. treasury and government agency securities
Fair Value
Less than 12 Months	6,986	0
12 Months or More	34,674	77,340
Total	41,660	77,340
Unrealized Loss
Less than 12 Months	(11)	0
12 Months or More	(3,317)	(4,740)
Total	(3,328)	(4,740)
Commercial mortgage-backed securities
Fair Value
Less than 12 Months	3,034	0
12 Months or More	95,638	93,396
Total	98,672	93,396
Unrealized Loss
Less than 12 Months	(37)	0
12 Months or More	(7,900)	(11,063)
Total	(7,937)	(11,063)
Residential mortgage-backed securities
Fair Value
Less than 12 Months	6,249	60
12 Months or More	467,910	506,442
Total	474,159	506,502
Unrealized Loss
Less than 12 Months	(47)	(5)
12 Months or More	(48,079)	(63,115)
Total	(48,126)	(63,120)
Commercial collateralized mortgage obligations
Fair Value
Less than 12 Months	4,497	0
12 Months or More	35,168	35,183
Total	39,665	35,183
Unrealized Loss
Less than 12 Months	(2)	0
12 Months or More	(3,063)	(4,203)
Total	(3,065)	(4,203)
Residential collateralized mortgage obligations
Fair Value
Less than 12 Months	0	0
12 Months or More	122,597	130,144
Total	122,597	130,144
Unrealized Loss
Less than 12 Months	0	0
12 Months or More	(16,983)	(20,566)
Total	$ (16,983)	(20,566)
Asset-backed securities
Fair Value
Less than 12 Months		7,350
12 Months or More		31,618
Total		38,968
Unrealized Loss
Less than 12 Months		(52)
12 Months or More		(468)
Total		$ (520)

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