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, 2023	Dec. 31, 2022
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	$ 3,086,490	$ 3,075,228
Commercial
Aging of recorded investment in loans by past due category and class of loans
Loans receivable	1,978,843	1,978,358
Commercial & Industrial | Commercial
Aging of recorded investment in loans by past due category and class of loans
Loans receivable	662,785	675,323
Financing Receivable Recorded Investment	664,978	677,522
Farmland | Commercial
Aging of recorded investment in loans by past due category and class of loans
Loans receivable	130,804	125,375
Financing Receivable Recorded Investment	132,629	127,610
Non Farm, Non Residential | Commercial
Aging of recorded investment in loans by past due category and class of loans
Loans receivable	395,364	386,542
Financing Receivable Recorded Investment	396,306	387,416
Agriculture | Commercial
Aging of recorded investment in loans by past due category and class of loans
Loans receivable	106,248	135,500
Financing Receivable Recorded Investment	108,568	137,682
All Other Commercial | Commercial
Aging of recorded investment in loans by past due category and class of loans
Loans receivable	503,039	475,520
Financing Receivable Recorded Investment	505,378	478,442
First Liens | Residential
Aging of recorded investment in loans by past due category and class of loans
Loans receivable	352,425	346,972
Financing Receivable Recorded Investment	353,366	347,916
Home Equity | Residential
Aging of recorded investment in loans by past due category and class of loans
Loans receivable	61,727	64,119
Financing Receivable Recorded Investment	61,912	64,340
Junior Liens | Residential
Aging of recorded investment in loans by past due category and class of loans
Loans receivable	56,571	56,836
Financing Receivable Recorded Investment	56,713	56,976
Multifamily | Commercial
Aging of recorded investment in loans by past due category and class of loans
Loans receivable	180,603	180,098
Multifamily | Residential
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	181,277	180,705
All Other Residential | Residential
Aging of recorded investment in loans by past due category and class of loans
Loans receivable	24,652	25,439
Financing Receivable Recorded Investment	24,738	25,523
Motor Vehicle | Consumer
Aging of recorded investment in loans by past due category and class of loans
Loans receivable	566,562	555,302
Financing Receivable Recorded Investment	568,770	557,717
All Other Consumer | Consumer
Aging of recorded investment in loans by past due category and class of loans
Loans receivable	31,737	33,237
Financing Receivable Recorded Investment	31,855	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	17,534	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	3,199	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	60	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	149	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	1,503
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	173	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	3,187	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	213	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	191	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	145	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	369	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	8,113	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	232	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	4,113	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	67	529
Financial Asset, 60 to 89 Days Past Due [Member] | Farmland | Commercial
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	470
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	103	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		1,231
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	574	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	107	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	211	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	946	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		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	1,595	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	40	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	4,182	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	983	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	530
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	297	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	961	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	80	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	223	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	730	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	5	15
Financial Asset, Past Due
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	25,829	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	4,249	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	1,060	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	252	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	1,503	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	470	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	4,722	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	400	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	625	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	1,464	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	369	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	10,438	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	277	412
Financial Asset, Not Past Due
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	3,060,661	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	660,729	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	131,569	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	396,054	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	107,065	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	504,908	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	348,644	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	61,512	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	56,088	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	179,813	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	24,369	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	558,332	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	$ 31,578	$ 32,967