Securities - Schedule of Securities with Unrealized Losses (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, fair value	$ 159,020	$ 47,871
Less than 12 months, unrealized loss	(1,814)	(489)
12 Months or more, fair value	1,034,052	1,096,219
12 Months or more, unrealized loss	(223,163)	(214,302)
Total fair value	1,193,072	1,144,090
Total unrealized loss	(224,977)	(214,791)
Obligations of State and Political Subdivisions
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, fair value	7,817	3,054
Less than 12 months, unrealized loss	(126)	(29)
12 Months or more, fair value	448,682	461,657
12 Months or more, unrealized loss	(117,163)	(106,715)
Total fair value	456,499	464,711
Total unrealized loss	(117,289)	(106,744)
MBS/CMO
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, fair value	97,046	38,024
Less than 12 months, unrealized loss	(1,282)	(420)
12 Months or more, fair value	448,074	463,315
12 Months or more, unrealized loss	(80,165)	(80,326)
Total fair value	545,120	501,339
Total unrealized loss	(81,447)	(80,746)
US Gov’t Sponsored Entities & Agencies
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, fair value	54,157	6,793
Less than 12 months, unrealized loss	(406)	(40)
12 Months or more, fair value	137,296	171,247
12 Months or more, unrealized loss	(25,835)	(27,261)
Total fair value	191,453	178,040
Total unrealized loss	$ (26,241)	$ (27,301)