Allowance for Loan Losses (Details 5) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Aging of recorded investment in loans by past due category and class of loans
Total Past Due	$ 15,737	$ 16,682
Financing Receivable, Not Past Due	2,660,354	1,944,526
Total	2,676,091	1,961,208
Commercial & Industrial
Aging of recorded investment in loans by past due category and class of loans
Total Past Due	1,936	1,782
Financing Receivable, Not Past Due	601,368	518,239
Total	603,304	520,021
Farmland
Aging of recorded investment in loans by past due category and class of loans
Total Past Due	2,105	2,659
Financing Receivable, Not Past Due	136,959	104,981
Total	139,064	107,640
Non Farm, Non Residential
Aging of recorded investment in loans by past due category and class of loans
Total Past Due	60	57
Financing Receivable, Not Past Due	409,728	188,706
Total	409,788	188,763
Agriculture
Aging of recorded investment in loans by past due category and class of loans
Total Past Due	493	388
Financing Receivable, Not Past Due	159,886	148,345
Total	160,379	148,733
All Other Commercial
Aging of recorded investment in loans by past due category and class of loans
Total Past Due	151	33
Financing Receivable, Not Past Due	278,592	208,633
Total	278,743	208,666
First Liens
Aging of recorded investment in loans by past due category and class of loans
Total Past Due	4,193	5,267
Financing Receivable, Not Past Due	410,637	231,684
Total	414,830	236,951
Home Equity
Aging of recorded investment in loans by past due category and class of loans
Total Past Due	362	273
Financing Receivable, Not Past Due	69,537	39,378
Total	69,899	39,651
Junior Liens
Aging of recorded investment in loans by past due category and class of loans
Total Past Due	582	420
Financing Receivable, Not Past Due	53,078	49,111
Total	53,660	49,531
Multifamily
Aging of recorded investment in loans by past due category and class of loans
Total Past Due	0	0
Financing Receivable, Not Past Due	163,803	109,609
Total	163,803	109,609
All Other Residential
Aging of recorded investment in loans by past due category and class of loans
Total Past Due	0	24
Financing Receivable, Not Past Due	7,318	9,146
Total	7,318	9,170
Motor Vehicle
Aging of recorded investment in loans by past due category and class of loans
Total Past Due	5,681	5,552
Financing Receivable, Not Past Due	337,055	309,238
Total	342,736	314,790
All Other Consumer
Aging of recorded investment in loans by past due category and class of loans
Total Past Due	174	227
Financing Receivable, Not Past Due	32,393	27,456
Total	32,567	27,683
Financial Asset, 30 to 59 Days Past Due [Member]
Aging of recorded investment in loans by past due category and class of loans
Total Past Due	8,444	10,229
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
Total Past Due	988	1,017
Financial Asset, 30 to 59 Days Past Due [Member] | Farmland
Aging of recorded investment in loans by past due category and class of loans
Total Past Due	0	515
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
Total Past Due	60	0
Financial Asset, 30 to 59 Days Past Due [Member] | Agriculture
Aging of recorded investment in loans by past due category and class of loans
Total Past Due	493	41
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
Total Past Due	75	30
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
Total Past Due	1,386	3,365
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
Total Past Due	326	155
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
Total Past Due	355	132
Financial Asset, 30 to 59 Days Past Due [Member] | Multifamily
Aging of recorded investment in loans by past due category and class of loans
Total Past Due	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
Total Past Due	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
Total Past Due	4,629	4,766
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
Total Past Due	132	208
Financial Asset, 60 to 89 Days Past Due [Member]
Aging of recorded investment in loans by past due category and class of loans
Total Past Due	2,570	1,718
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
Total Past Due	116	420
Financial Asset, 60 to 89 Days Past Due [Member] | Farmland
Aging of recorded investment in loans by past due category and class of loans
Total Past Due	5	8
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
Total Past Due	0	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
Total Past Due	0	0
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
Total Past Due	47	3
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
Total Past Due	1,443	429
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
Total Past Due	25	8
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
Total Past Due	101	225
Financial Asset, 60 to 89 Days Past Due [Member] | Multifamily
Aging of recorded investment in loans by past due category and class of loans
Total Past Due	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
Total Past Due	0	9
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
Total Past Due	801	609
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
Total Past Due	32	7
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
Total Past Due	4,723	4,735
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
Total Past Due	832	345
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
Total Past Due	2,100	2,136
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
Total Past Due	0	57
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
Total Past Due	0	347
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
Total Past Due	29	0
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
Total Past Due	1,364	1,473
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
Total Past Due	11	110
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
Total Past Due	126	63
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
Total Past Due	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
Total Past Due	0	15
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
Total Past Due	251	177
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
Total Past Due	$ 10	$ 12