Investment Securities - Summary of Available-for-sale Investment Securities (Details) - USD ($) $ in Thousands		Mar. 31, 2024	Dec. 31, 2023
Schedule of Available-for-sale Securities
Amortized Cost		$ 1,262,319	$ 1,184,288
Gross Unrealized Gains		2,169	3,240
Gross Unrealized Losses		(148,022)	(139,206)
Fair Value	[1]	1,116,466	1,048,322
U.S. Treasury and government agencies
Schedule of Available-for-sale Securities
Amortized Cost		29,807	30,999
Gross Unrealized Gains		113	292
Gross Unrealized Losses		(1,147)	(995)
Fair Value		28,773	30,296
U.S. government sponsored agencies
Schedule of Available-for-sale Securities
Amortized Cost		210,871	128,500
Gross Unrealized Gains		597	639
Gross Unrealized Losses		(11,008)	(10,532)
Fair Value		200,460	118,607
States and political subdivisions
Schedule of Available-for-sale Securities
Amortized Cost		237,207	239,906
Gross Unrealized Gains		92	485
Gross Unrealized Losses		(28,549)	(27,095)
Fair Value		208,750	213,296
Residential mortgage-backed securities
Schedule of Available-for-sale Securities
Amortized Cost		717,657	717,772
Gross Unrealized Gains		1,366	1,819
Gross Unrealized Losses		(97,332)	(90,667)
Fair Value		621,691	628,924
Commercial mortgage-backed securities
Schedule of Available-for-sale Securities
Amortized Cost		60,277	60,611
Gross Unrealized Gains		1	5
Gross Unrealized Losses		(9,487)	(9,382)
Fair Value		50,791	51,234
Bank-issued trust preferred securities
Schedule of Available-for-sale Securities
Amortized Cost		6,500	6,500
Gross Unrealized Gains		0	0
Gross Unrealized Losses		(499)	(535)
Fair Value		$ 6,001	$ 5,965

[1]     Available-for-sale investment securities and held-to-maturity investment securities are presented net of allowance for credit losses of $0 and $238, respectively, at March 31, 2024, and $0 and $238, respectively, at December 31, 2023.