Allowance for Credit Losses - Aging of the Recorded Investment in Loans by Past Due Category and Class of Loan (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	$ 3,125,718	$ 3,075,228
Commercial
Aging of recorded investment in loans by past due category and class of loans
Loans receivable	1,960,829	1,978,358
Commercial & Industrial | Commercial
Aging of recorded investment in loans by past due category and class of loans
Loans receivable	641,111	675,323
Financing Receivable Recorded Investment	643,345	677,522
Farmland | Commercial
Aging of recorded investment in loans by past due category and class of loans
Loans receivable	131,169	125,375
Financing Receivable Recorded Investment	133,893	127,610
Non Farm, Non Residential | Commercial
Aging of recorded investment in loans by past due category and class of loans
Loans receivable	418,132	386,542
Financing Receivable Recorded Investment	419,239	387,416
Agriculture | Commercial
Aging of recorded investment in loans by past due category and class of loans
Loans receivable	117,085	135,500
Financing Receivable Recorded Investment	119,667	137,682
All Other Commercial | Commercial
Aging of recorded investment in loans by past due category and class of loans
Loans receivable	467,507	475,520
Financing Receivable Recorded Investment	469,824	478,442
First Liens | Residential
Aging of recorded investment in loans by past due category and class of loans
Loans receivable	357,234	346,972
Financing Receivable Recorded Investment	358,345	347,916
Home Equity | Residential
Aging of recorded investment in loans by past due category and class of loans
Loans receivable	63,358	64,119
Financing Receivable Recorded Investment	63,566	64,340
Junior Liens | Residential
Aging of recorded investment in loans by past due category and class of loans
Loans receivable	57,633	56,836
Financing Receivable Recorded Investment	57,779	56,976
Multifamily | Commercial
Aging of recorded investment in loans by past due category and class of loans
Loans receivable	185,825	180,098
Multifamily | Residential
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	186,551	180,705
All Other Residential | Residential
Aging of recorded investment in loans by past due category and class of loans
Loans receivable	23,019	25,439
Financing Receivable Recorded Investment	23,100	25,523
Motor Vehicle | Consumer
Aging of recorded investment in loans by past due category and class of loans
Loans receivable	614,798	555,302
Financing Receivable Recorded Investment	617,393	557,717
All Other Consumer | Consumer
Aging of recorded investment in loans by past due category and class of loans
Loans receivable	32,860	33,237
Financing Receivable Recorded Investment	33,016	33,379
Financial Asset, 30 to 59 Days Past Due [Member]
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	12,638	24,387
Financial Asset, 30 to 59 Days Past Due [Member] | Commercial & Industrial | Commercial
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	520	1,698
Financial Asset, 30 to 59 Days Past Due [Member] | Farmland | Commercial
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	54	112
Financial Asset, 30 to 59 Days Past Due [Member] | Non Farm, Non Residential | Commercial
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	46	274
Financial Asset, 30 to 59 Days Past Due [Member] | Agriculture | Commercial
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	117
Financial Asset, 30 to 59 Days Past Due [Member] | All Other Commercial | Commercial
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	13	333
Financial Asset, 30 to 59 Days Past Due [Member] | First Liens | Residential
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	902	4,528
Financial Asset, 30 to 59 Days Past Due [Member] | Home Equity | Residential
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	594	305
Financial Asset, 30 to 59 Days Past Due [Member] | Junior Liens | Residential
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	374	213
Financial Asset, 30 to 59 Days Past Due [Member] | Multifamily | Residential
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	113	317
Financial Asset, 30 to 59 Days Past Due [Member] | All Other Residential | Residential
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment		1,115
Financial Asset, 30 to 59 Days Past Due [Member] | Motor Vehicle | Consumer
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	9,549	15,151
Financial Asset, 30 to 59 Days Past Due [Member] | All Other Consumer | Consumer
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	356	341
Financial Asset, 60 to 89 Days Past Due [Member]
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	4,304	5,629
Financial Asset, 60 to 89 Days Past Due [Member] | Commercial & Industrial | Commercial
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	370	529
Financial Asset, 60 to 89 Days Past Due [Member] | Non Farm, Non Residential | Commercial
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment		34
Financial Asset, 60 to 89 Days Past Due [Member] | Agriculture | Commercial
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	217	1,231
Financial Asset, 60 to 89 Days Past Due [Member] | All Other Commercial | Commercial
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	1,083
Financial Asset, 60 to 89 Days Past Due [Member] | First Liens | Residential
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	739	1,203
Financial Asset, 60 to 89 Days Past Due [Member] | Home Equity | Residential
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	33	144
Financial Asset, 60 to 89 Days Past Due [Member] | Junior Liens | Residential
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	119	69
Financial Asset, 60 to 89 Days Past Due [Member] | Multifamily | Residential
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	30	83
Financial Asset, 60 to 89 Days Past Due [Member] | All Other Residential | Residential
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	1	350
Financial Asset, 60 to 89 Days Past Due [Member] | Motor Vehicle | Consumer
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	1,578	1,930
Financial Asset, 60 to 89 Days Past Due [Member] | All Other Consumer | Consumer
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	134	56
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	7,205	3,397
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Commercial & Industrial | Commercial
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	1,316	726
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Farmland | Commercial
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	1,662
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Agriculture | Commercial
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	1,054
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | All Other Commercial | Commercial
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment		14
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | First Liens | Residential
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	1,405	1,054
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Home Equity | Residential
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	110	276
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Junior Liens | Residential
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	267	327
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Multifamily | Residential
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	373
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Motor Vehicle | Consumer
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	1,002	985
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | All Other Consumer | Consumer
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	16	15
Financial Asset, Past Due
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	24,147	33,413
Financial Asset, Past Due | Commercial & Industrial | Commercial
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	2,206	2,953
Financial Asset, Past Due | Farmland | Commercial
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	1,716	112
Financial Asset, 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	46	308
Financial Asset, Past Due | Agriculture | Commercial
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	1,388	1,231
Financial Asset, Past Due | All Other Commercial | Commercial
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	1,096	347
Financial Asset, Past Due | First Liens | Residential
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	3,046	6,785
Financial Asset, Past Due | Home Equity | Residential
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	737	725
Financial Asset, Past Due | Junior Liens | Residential
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	760	609
Financial Asset, Past Due | Multifamily | Residential
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	516	400
Financial Asset, Past Due | All Other Residential | Residential
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	1	1,465
Financial Asset, Past Due | Motor Vehicle | Consumer
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	12,129	18,066
Financial Asset, Past Due | All Other Consumer | Consumer
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	506	412
Financial Asset, Not Past Due
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	3,101,571	3,041,815
Financial Asset, Not Past Due | Commercial & Industrial | Commercial
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	641,139	674,569
Financial Asset, Not Past Due | Farmland | Commercial
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	132,177	127,498
Financial Asset, Not 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	419,193	387,108
Financial Asset, Not Past Due | Agriculture | Commercial
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	118,279	136,451
Financial Asset, Not Past Due | All Other Commercial | Commercial
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	468,728	478,095
Financial Asset, Not Past Due | First Liens | Residential
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	355,299	341,131
Financial Asset, Not Past Due | Home Equity | Residential
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	62,829	63,615
Financial Asset, Not Past Due | Junior Liens | Residential
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	57,019	56,367
Financial Asset, Not Past Due | Multifamily | Residential
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	186,035	180,305
Financial Asset, Not Past Due | All Other Residential | Residential
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	23,099	24,058
Financial Asset, Not Past Due | Motor Vehicle | Consumer
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	605,264	539,651
Financial Asset, Not Past Due | All Other Consumer | Consumer
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	$ 32,510	$ 32,967