Securities - Schedule of Securities with Unrealized Losses (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Debt Securities, Available-for-sale [Line Items]
Less than 12 months fair value	$ 47,871	$ 285,714
Less than 12 months unrealized loss	(489)	(5,681)
12 months or more fair value	1,096,219	1,070,442
12 months or more unrealized loss	(214,302)	(273,485)
Total fair value	1,144,090	1,356,156
Total unrealized loss	(214,791)	(279,166)
Obligations of State and Political Subdivisions
Debt Securities, Available-for-sale [Line Items]
Less than 12 months fair value	3,054	13,249
Less than 12 months unrealized loss	(29)	(231)
12 months or more fair value	461,657	445,264
12 months or more unrealized loss	(106,715)	(124,584)
Total fair value	464,711	458,513
Total unrealized loss	(106,744)	(124,815)
MBS/CMO
Debt Securities, Available-for-sale [Line Items]
Less than 12 months fair value	38,024	176,333
Less than 12 months unrealized loss	(420)	(2,461)
12 months or more fair value	463,315	480,235
12 months or more unrealized loss	(80,326)	(113,254)
Total fair value	501,339	656,568
Total unrealized loss	(80,746)	(115,715)
US Gov’t Sponsored Entities & Agencies
Debt Securities, Available-for-sale [Line Items]
Less than 12 months fair value	6,793	96,132
Less than 12 months unrealized loss	(40)	(2,989)
12 months or more fair value	171,247	144,943
12 months or more unrealized loss	(27,261)	(35,647)
Total fair value	178,040	241,075
Total unrealized loss	$ (27,301)	$ (38,636)