Allowance for Loan Losses (Details 5) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Aging of recorded investment in loans by past due category and class of loans
Total	$ 2,486,537	$ 2,618,553
Commercial & Industrial
Aging of recorded investment in loans by past due category and class of loans
Total	575,045	608,572
Farmland
Aging of recorded investment in loans by past due category and class of loans
Total	114,045	118,641
Non Farm, Non Residential
Aging of recorded investment in loans by past due category and class of loans
Total	342,211	351,107
Agriculture
Aging of recorded investment in loans by past due category and class of loans
Total	123,568	146,480
All Other Commercial
Aging of recorded investment in loans by past due category and class of loans
Total	310,402	305,636
First Liens
Aging of recorded investment in loans by past due category and class of loans
Total	306,205	324,467
Home Equity
Aging of recorded investment in loans by past due category and class of loans
Total	57,699	60,755
Junior Liens
Aging of recorded investment in loans by past due category and class of loans
Total	51,134	54,176
Multifamily
Aging of recorded investment in loans by past due category and class of loans
Total	106,564	151,042
All Other Residential
Aging of recorded investment in loans by past due category and class of loans
Total	15,601	15,968
Motor Vehicle
Aging of recorded investment in loans by past due category and class of loans
Total	450,506	450,112
All Other Consumer
Aging of recorded investment in loans by past due category and class of loans
Total	33,557	31,597
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, before Allowance for Credit Loss	9,036	14,216
Financial Asset, 30 to 59 Days Past Due [Member] | Commercial & Industrial
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable, before Allowance for Credit Loss	2,283	685
Financial Asset, 30 to 59 Days Past Due [Member] | Farmland
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable, before Allowance for Credit Loss	0	22
Financial Asset, 30 to 59 Days Past Due [Member] | Non Farm, Non Residential
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable, before Allowance for Credit Loss	63	155
Financial Asset, 30 to 59 Days Past Due [Member] | Agriculture
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable, before Allowance for Credit Loss	96	28
Financial Asset, 30 to 59 Days Past Due [Member] | All Other Commercial
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable, before Allowance for Credit Loss	77	0
Financial Asset, 30 to 59 Days Past Due [Member] | First Liens
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable, before Allowance for Credit Loss	858	5,506
Financial Asset, 30 to 59 Days Past Due [Member] | Home Equity
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable, before Allowance for Credit Loss	304	260
Financial Asset, 30 to 59 Days Past Due [Member] | Junior Liens
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable, before Allowance for Credit Loss	81	421
Financial Asset, 30 to 59 Days Past Due [Member] | Multifamily
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable, before Allowance for Credit Loss	0	0
Financial Asset, 30 to 59 Days Past Due [Member] | All Other Residential
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable, before Allowance for Credit Loss	0	0
Financial Asset, 30 to 59 Days Past Due [Member] | Motor Vehicle
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable, before Allowance for Credit Loss	5,147	6,975
Financial Asset, 30 to 59 Days Past Due [Member] | All Other Consumer
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable, before Allowance for Credit Loss	127	164
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, before Allowance for Credit Loss	2,212	4,102
Financial Asset, 60 to 89 Days Past Due [Member] | Commercial & Industrial
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable, before Allowance for Credit Loss	59	746
Financial Asset, 60 to 89 Days Past Due [Member] | Farmland
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable, before Allowance for Credit Loss	0	0
Financial Asset, 60 to 89 Days Past Due [Member] | Non Farm, Non Residential
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable, before Allowance for Credit Loss	68	0
Financial Asset, 60 to 89 Days Past Due [Member] | Agriculture
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable, before Allowance for Credit Loss	0	30
Financial Asset, 60 to 89 Days Past Due [Member] | All Other Commercial
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable, before Allowance for Credit Loss	0	0
Financial Asset, 60 to 89 Days Past Due [Member] | First Liens
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable, before Allowance for Credit Loss	873	1,866
Financial Asset, 60 to 89 Days Past Due [Member] | Home Equity
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable, before Allowance for Credit Loss	210	29
Financial Asset, 60 to 89 Days Past Due [Member] | Junior Liens
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable, before Allowance for Credit Loss	71	68
Financial Asset, 60 to 89 Days Past Due [Member] | Multifamily
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable, before Allowance for Credit Loss	0	0
Financial Asset, 60 to 89 Days Past Due [Member] | All Other Residential
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable, before Allowance for Credit Loss	45	50
Financial Asset, 60 to 89 Days Past Due [Member] | Motor Vehicle
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable, before Allowance for Credit Loss	836	1,294
Financial Asset, 60 to 89 Days Past Due [Member] | All Other Consumer
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable, before Allowance for Credit Loss	50	19
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, before Allowance for Credit Loss	6,279	7,408
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Commercial & Industrial
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable, before Allowance for Credit Loss	2,741	3,364
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Farmland
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable, before Allowance for Credit Loss	0	91
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Non Farm, Non Residential
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable, before Allowance for Credit Loss	7	271
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Agriculture
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable, before Allowance for Credit Loss	1,188	275
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | All Other Commercial
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable, before Allowance for Credit Loss	0	24
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | First Liens
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable, before Allowance for Credit Loss	1,840	2,365
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Home Equity
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable, before Allowance for Credit Loss	86	104
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Junior Liens
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable, before Allowance for Credit Loss	188	341
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Multifamily
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable, before Allowance for Credit Loss	0	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | All Other Residential
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable, before Allowance for Credit Loss	0	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Motor Vehicle
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable, before Allowance for Credit Loss	229	560
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | All Other Consumer
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable, before Allowance for Credit Loss	0	13
Financial Asset, Past Due
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable, before Allowance for Credit Loss	17,527	25,726
Financial Asset, Past Due | Commercial & Industrial
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable, before Allowance for Credit Loss	5,083	4,795
Financial Asset, Past Due | Farmland
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable, before Allowance for Credit Loss	0	113
Financial Asset, Past Due | Non Farm, Non Residential
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable, before Allowance for Credit Loss	138	426
Financial Asset, Past Due | Agriculture
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable, before Allowance for Credit Loss	1,284	333
Financial Asset, Past Due | All Other Commercial
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable, before Allowance for Credit Loss	77	24
Financial Asset, Past Due | First Liens
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable, before Allowance for Credit Loss	3,571	9,737
Financial Asset, Past Due | Home Equity
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable, before Allowance for Credit Loss	600	393
Financial Asset, Past Due | Junior Liens
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable, before Allowance for Credit Loss	340	830
Financial Asset, Past Due | Multifamily
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable, before Allowance for Credit Loss	0	0
Financial Asset, Past Due | All Other Residential
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable, before Allowance for Credit Loss	45	50
Financial Asset, Past Due | Motor Vehicle
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable, before Allowance for Credit Loss	6,212	8,829
Financial Asset, Past Due | All Other Consumer
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable, before Allowance for Credit Loss	177	196
Financial Asset, Not Past Due
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable, before Allowance for Credit Loss	2,469,010	2,592,827
Financial Asset, Not Past Due | Commercial & Industrial
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable, before Allowance for Credit Loss	569,962	603,777
Financial Asset, Not Past Due | Farmland
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable, before Allowance for Credit Loss	114,045	118,528
Financial Asset, Not Past Due | Non Farm, Non Residential
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable, before Allowance for Credit Loss	342,073	350,681
Financial Asset, Not Past Due | Agriculture
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable, before Allowance for Credit Loss	122,284	146,147
Financial Asset, Not Past Due | All Other Commercial
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable, before Allowance for Credit Loss	310,325	305,612
Financial Asset, Not Past Due | First Liens
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable, before Allowance for Credit Loss	302,634	314,730
Financial Asset, Not Past Due | Home Equity
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable, before Allowance for Credit Loss	57,099	60,362
Financial Asset, Not Past Due | Junior Liens
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable, before Allowance for Credit Loss	50,794	53,346
Financial Asset, Not Past Due | Multifamily
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable, before Allowance for Credit Loss	106,564	151,042
Financial Asset, Not Past Due | All Other Residential
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable, before Allowance for Credit Loss	15,556	15,918
Financial Asset, Not Past Due | Motor Vehicle
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable, before Allowance for Credit Loss	444,294	441,283
Financial Asset, Not Past Due | All Other Consumer
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable, before Allowance for Credit Loss	$ 33,380	$ 31,401