Allowance for Loan Losses (Details 5) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Aging of recorded investment in loans by past due category and class of loans
Total Past Due	$ 14,888	$ 21,305
Financing Receivable, Recorded Investment, Current	1,934,699	1,891,717
Total	1,949,587	1,913,022
Commercial & Industrial
Aging of recorded investment in loans by past due category and class of loans
Total Past Due	1,733	1,092
Financing Receivable, Recorded Investment, Current	507,758	474,709
Total	509,491	475,801
Farmland
Aging of recorded investment in loans by past due category and class of loans
Total Past Due	3,206	4,012
Financing Receivable, Recorded Investment, Current	103,902	104,457
Total	107,108	108,469
Non Farm, Non Residential
Aging of recorded investment in loans by past due category and class of loans
Total Past Due	77	141
Financing Receivable, Recorded Investment, Current	188,673	200,804
Total	188,750	200,945
Agriculture
Aging of recorded investment in loans by past due category and class of loans
Total Past Due	11	702
Financing Receivable, Recorded Investment, Current	142,700	152,388
Total	142,711	153,090
All Other Commercial
Aging of recorded investment in loans by past due category and class of loans
Total Past Due	4	0
Financing Receivable, Recorded Investment, Current	210,233	207,875
Total	210,237	207,875
First Liens
Aging of recorded investment in loans by past due category and class of loans
Total Past Due	2,913	8,218
Financing Receivable, Recorded Investment, Current	236,246	247,029
Total	239,159	255,247
Home Equity
Aging of recorded investment in loans by past due category and class of loans
Total Past Due	364	364
Financing Receivable, Recorded Investment, Current	37,449	35,752
Total	37,813	36,116
Junior Liens
Aging of recorded investment in loans by past due category and class of loans
Total Past Due	209	574
Financing Receivable, Recorded Investment, Current	47,866	41,688
Total	48,075	42,262
Multifamily
Aging of recorded investment in loans by past due category and class of loans
Total Past Due	0	0
Financing Receivable, Recorded Investment, Current	107,179	90,141
Total	107,179	90,141
All Other Residential
Aging of recorded investment in loans by past due category and class of loans
Total Past Due	0	312
Financing Receivable, Recorded Investment, Current	12,481	13,329
Total	12,481	13,641
Motor Vehicle
Aging of recorded investment in loans by past due category and class of loans
Total Past Due	6,252	5,761
Financing Receivable, Recorded Investment, Current	313,132	298,211
Total	319,384	303,972
All Other Consumer
Aging of recorded investment in loans by past due category and class of loans
Total Past Due	119	129
Financing Receivable, Recorded Investment, Current	27,080	25,334
Total	27,199	25,463
Financing Receivables, 30 to 59 Days Past Due [Member]
Aging of recorded investment in loans by past due category and class of loans
Total Past Due	6,856	12,223
Financing Receivables, 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	765	372
Financing Receivables, 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	341
Financing Receivables, 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	20	141
Financing Receivables, 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	0	141
Financing Receivables, 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	4	0
Financing Receivables, 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	528	5,467
Financing Receivables, 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	203	310
Financing Receivables, 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	138	274
Financing Receivables, 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
Financing Receivables, 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	300
Financing Receivables, 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	5,092	4,770
Financing Receivables, 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	106	107
Financing Receivables, 60 to 89 Days Past Due [Member]
Aging of recorded investment in loans by past due category and class of loans
Total Past Due	1,976	2,268
Financing Receivables, 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	487	80
Financing Receivables, 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	8	0
Financing Receivables, 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	31	0
Financing Receivables, 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
Financing Receivables, 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	0	0
Financing Receivables, 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	446	1,317
Financing Receivables, 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	80	46
Financing Receivables, 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	53	106
Financing Receivables, 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
Financing Receivables, 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	0
Financing Receivables, 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	861	697
Financing Receivables, 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	10	22
Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Aging of recorded investment in loans by past due category and class of loans
Total Past Due	6,056	6,814
Financing Receivables, Equal to 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	481	640
Financing Receivables, Equal to 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	3,198	3,671
Financing Receivables, Equal to 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	26	0
Financing Receivables, Equal to 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	11	561
Financing Receivables, Equal to 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	0	0
Financing Receivables, Equal to 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	1,939	1,434
Financing Receivables, Equal to 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	81	8
Financing Receivables, Equal to 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	18	194
Financing Receivables, Equal to 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
Financing Receivables, Equal to 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	12
Financing Receivables, Equal to 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	299	294
Financing Receivables, Equal to 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	$ 3	$ 0