Securities, Available-for-sale Securities (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Available-for-sale [Abstract]
Amortized cost	$ 1,232,879	$ 1,301,244
Gross unrealized gains	461	245
Gross unrealized losses	(143,018)	(137,765)
Fair value	1,090,322	1,163,724
U.S. Treasury and Government Agencies [Member]
Available-for-sale [Abstract]
Amortized cost	364,730	381,268
Gross unrealized gains	115	121
Gross unrealized losses	(25,844)	(26,572)
Fair value	339,001	354,817
State and Political Subdivisions [Member]
Available-for-sale [Abstract]
Amortized cost	310,609	313,147
Gross unrealized gains	15	88
Gross unrealized losses	(52,482)	(48,290)
Fair value	258,142	264,945
U.S. Government Sponsored Agency Mortgage-backed Securities [Member]
Available-for-sale [Abstract]
Amortized cost	488,253	518,836
Gross unrealized gains	323	36
Gross unrealized losses	(64,477)	(62,136)
Fair value	424,099	456,736
Asset-backed Securities [Member]
Available-for-sale [Abstract]
Amortized cost	69,287	87,993
Gross unrealized gains	8	0
Gross unrealized losses	(215)	(767)
Fair value	$ 69,080	$ 87,226