Securities - Schedule of Expected Maturity for Contractual Maturities (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Amortized Cost
One Year or Less	$ 174,689
One to Five Years	462,316
Five to Ten Years	577,346
After Ten Years	158,224
Total	1,372,575	$ 1,537,420
Fair Value
One Year or Less	171,321
One to Five Years	435,502
Five to Ten Years	516,425
After Ten Years	125,191
Total	1,248,439	1,371,757
U.S. Treasuries and government agencies
Amortized Cost
One Year or Less	29,894
One to Five Years	141,775
Five to Ten Years	25,357
After Ten Years	0
Total	197,026	198,154
Fair Value
One Year or Less	29,588
One to Five Years	127,212
Five to Ten Years	22,271
After Ten Years	0
Total	179,071	174,993
Obligations of states and municipalities
Amortized Cost
One Year or Less	0
One to Five Years	25,891
Five to Ten Years	359,940
After Ten Years	149,398
Total	535,229	550,590
Fair Value
One Year or Less	0
One to Five Years	24,269
Five to Ten Years	321,827
After Ten Years	117,107
Total	463,203	453,907
Residential mortgage backed - agency
Amortized Cost
One Year or Less	42
One to Five Years	11,078
Five to Ten Years	35,954
After Ten Years	0
Total	47,074	57,883
Fair Value
One Year or Less	42
One to Five Years	10,656
Five to Ten Years	31,540
After Ten Years	0
Total	42,238	53,061
Residential mortgage backed - non-agency
Amortized Cost
One Year or Less	91,412
One to Five Years	91,836
Five to Ten Years	92,752
After Ten Years	8,826
Total	284,826	365,983
Fair Value
One Year or Less	89,310
One to Five Years	87,333
Five to Ten Years	81,304
After Ten Years	8,084
Total	266,031	339,295
Commercial mortgage backed - agency
Amortized Cost
One Year or Less	134
One to Five Years	23,713
Five to Ten Years	12,304
After Ten Years	0
Total	36,151	61,810
Fair Value
One Year or Less	134
One to Five Years	22,941
Five to Ten Years	11,810
After Ten Years	0
Total	34,885	59,933
Commercial mortgage backed - non-agency
Amortized Cost
One Year or Less	44,762
One to Five Years	133,553
Five to Ten Years	5,139
After Ten Years	0
Total	183,454	191,709
Fair Value
One Year or Less	43,898
One to Five Years	128,962
Five to Ten Years	4,201
After Ten Years	0
Total	177,061	183,299
Asset-backed
Amortized Cost
One Year or Less	8,445
One to Five Years	34,470
Five to Ten Years	36,400
After Ten Years	0
Total	79,315	101,791
Fair Value
One Year or Less	8,349
One to Five Years	34,129
Five to Ten Years	35,458
After Ten Years	0
Total	77,936	98,626
Other
Amortized Cost
One Year or Less	0
One to Five Years	0
Five to Ten Years	9,500
After Ten Years	0
Total	9,500	9,500
Fair Value
One Year or Less	0
One to Five Years	0
Five to Ten Years	8,014
After Ten Years	0
Total	$ 8,014	$ 8,643