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Investment Securities - Summary of Available-for-sale Investment Securities (Details) - USD ($) $ in Thousands		Sep. 30, 2025	Dec. 31, 2024
Schedule of Available-for-sale Securities
Amortized Cost		$ 1,078,703	$ 1,229,382
Gross Unrealized Gains		2,307	1,583
Gross Unrealized Losses		(104,104)	(147,410)
Fair Value	[1]	976,906	1,083,555
U.S. Treasury and government agencies
Schedule of Available-for-sale Securities
Amortized Cost		17,582	15,317
Gross Unrealized Gains		158	87
Gross Unrealized Losses		(44)	(208)
Fair Value		17,696	15,196
U.S. government sponsored agencies
Schedule of Available-for-sale Securities
Amortized Cost		171,182	224,167
Gross Unrealized Gains		317	53
Gross Unrealized Losses		(7,367)	(15,137)
Fair Value		164,132	209,083
States and political subdivisions
Schedule of Available-for-sale Securities
Amortized Cost		208,505	225,074
Gross Unrealized Gains		139	16
Gross Unrealized Losses		(21,822)	(28,789)
Fair Value		186,822	196,301
Residential mortgage-backed securities
Schedule of Available-for-sale Securities
Amortized Cost		627,961	693,886
Gross Unrealized Gains		1,692	1,391
Gross Unrealized Losses		(68,136)	(93,475)
Fair Value		561,517	601,802
Commercial mortgage-backed securities
Schedule of Available-for-sale Securities
Amortized Cost		48,973	64,438
Gross Unrealized Gains		0	36
Gross Unrealized Losses		(6,463)	(9,409)
Fair Value		42,510	55,065
Bank-issued trust preferred securities
Schedule of Available-for-sale Securities
Amortized Cost		4,500	6,500
Gross Unrealized Gains		1	0
Gross Unrealized Losses		(272)	(392)
Fair Value		$ 4,229	$ 6,108
[1]     Available-for-sale investment securities and held-to-maturity investment securities are presented net of allowance for credit losses of $0 and $237, respectively, at both September 30, 2025 and December 31, 2024.

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