Allowance for Credit Losses - Aging of the Recorded Investment in Loans by Past Due Category and Class of Loan (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Aging of recorded investment in loans by past due category and class of loans
Loans receivable	$ 2,017,990	$ 2,008,433
Financing Receivable Recorded Investment	3,202,042	3,178,373
Commercial & Industrial | Commercial
Aging of recorded investment in loans by past due category and class of loans
Loans receivable	568,275	649,524
Financing Receivable Recorded Investment	570,714	652,093
Farmland | Commercial
Aging of recorded investment in loans by past due category and class of loans
Loans receivable	129,743	130,606
Financing Receivable Recorded Investment	131,808	133,406
Non Farm, Non Residential | Commercial
Aging of recorded investment in loans by past due category and class of loans
Loans receivable	533,088	437,661
Financing Receivable Recorded Investment	534,717	439,009
Agriculture | Commercial
Aging of recorded investment in loans by past due category and class of loans
Loans receivable	124,996	138,022
Financing Receivable Recorded Investment	128,578	141,041
All Other Commercial | Commercial
Aging of recorded investment in loans by past due category and class of loans
Loans receivable	460,752	461,713
Financing Receivable Recorded Investment	462,918	464,776
First Liens | Residential
Aging of recorded investment in loans by past due category and class of loans
Loans receivable	362,959	358,166
Financing Receivable Recorded Investment	364,146	359,292
Home Equity | Residential
Aging of recorded investment in loans by past due category and class of loans
Loans receivable	65,463	65,581
Financing Receivable Recorded Investment	65,693	65,810
Junior Liens | Residential
Aging of recorded investment in loans by past due category and class of loans
Loans receivable	58,386	58,663
Financing Receivable Recorded Investment	58,558	58,833
Multifamily | Residential
Aging of recorded investment in loans by past due category and class of loans
Loans receivable	201,136	190,907
Financing Receivable Recorded Investment	201,922	191,734
All Other Residential | Residential
Aging of recorded investment in loans by past due category and class of loans
Loans receivable	22,552	22,471
Financing Receivable Recorded Investment	22,648	22,562
Motor Vehicle | Consumer
Aging of recorded investment in loans by past due category and class of loans
Loans receivable	626,233	614,559
Financing Receivable Recorded Investment	629,109	617,448
All Other Consumer | Consumer
Aging of recorded investment in loans by past due category and class of loans
Loans receivable	31,066	32,199
Financing Receivable Recorded Investment	31,231	32,369
30-59 Days Past Due
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	16,704	17,948
30-59 Days Past Due | Commercial & Industrial | Commercial
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	1,434	668
30-59 Days Past Due | Farmland | Commercial
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	398	58
30-59 Days Past Due | Agriculture | Commercial
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	17
30-59 Days Past Due | All Other Commercial | Commercial
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	759
30-59 Days Past Due | First Liens | Residential
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	3,979	2,841
30-59 Days Past Due | Home Equity | Residential
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	885	360
30-59 Days Past Due | Junior Liens | Residential
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	439	462
30-59 Days Past Due | Multifamily | Residential
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	570	117
30-59 Days Past Due | All Other Residential | Residential
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	309	554
30-59 Days Past Due | Motor Vehicle | Consumer
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	7,552	12,491
30-59 Days Past Due | All Other Consumer | Consumer
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	362	397
60-89 Days Past Due
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	3,556	3,612
60-89 Days Past Due | Commercial & Industrial | Commercial
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	1,539	488
60-89 Days Past Due | Non Farm, Non Residential | Commercial
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	111
60-89 Days Past Due | First Liens | Residential
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	323	816
60-89 Days Past Due | Home Equity | Residential
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	68	188
60-89 Days Past Due | Junior Liens | Residential
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	240	124
60-89 Days Past Due | Multifamily | Residential
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	96	140
60-89 Days Past Due | Motor Vehicle | Consumer
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	1,160	1,754
60-89 Days Past Due | All Other Consumer | Consumer
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	19	102
90 Days and Greater Past Due
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	12,548	5,929
90 Days and Greater Past Due | Commercial & Industrial | Commercial
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	7,791	1,136
90 Days and Greater Past Due | Farmland | Commercial
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	1,201	1,201
90 Days and Greater Past Due | Agriculture | Commercial
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	930	1,141
90 Days and Greater Past Due | First Liens | Residential
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	874	924
90 Days and Greater Past Due | Home Equity | Residential
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	163	71
90 Days and Greater Past Due | Junior Liens | Residential
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	266	262
90 Days and Greater Past Due | Multifamily | Residential
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	394	373
90 Days and Greater Past Due | All Other Residential | Residential
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	408	47
90 Days and Greater Past Due | Motor Vehicle | Consumer
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	463	761
90 Days and Greater Past Due | All Other Consumer | Consumer
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	58	13
Total Past Due
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	32,808	27,489
Total Past Due | Commercial & Industrial | Commercial
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	10,764	2,292
Total Past Due | Farmland | Commercial
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	1,599	1,259
Total Past Due | Non Farm, Non Residential | Commercial
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	111
Total Past Due | Agriculture | Commercial
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	947	1,141
Total Past Due | All Other Commercial | Commercial
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	759
Total Past Due | First Liens | Residential
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	5,176	4,581
Total Past Due | Home Equity | Residential
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	1,116	619
Total Past Due | Junior Liens | Residential
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	945	848
Total Past Due | Multifamily | Residential
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	1,060	630
Total Past Due | All Other Residential | Residential
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	717	601
Total Past Due | Motor Vehicle | Consumer
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	9,175	15,006
Total Past Due | All Other Consumer | Consumer
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	439	512
Current
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	3,169,234	3,150,884
Current | Commercial & Industrial | Commercial
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	559,950	649,801
Current | Farmland | Commercial
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	130,209	132,147
Current | Non Farm, Non Residential | Commercial
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	534,606	439,009
Current | Agriculture | Commercial
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	127,631	139,900
Current | All Other Commercial | Commercial
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	462,159	464,776
Current | First Liens | Residential
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	358,970	354,711
Current | Home Equity | Residential
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	64,577	65,191
Current | Junior Liens | Residential
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	57,613	57,985
Current | Multifamily | Residential
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	200,862	191,104
Current | All Other Residential | Residential
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	21,931	21,961
Current | Motor Vehicle | Consumer
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	619,934	602,442
Current | All Other Consumer | Consumer
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	$ 30,792	$ 31,857