Allowance for Loan Losses (Details 5) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Aging of recorded investment in loans by past due category and class of loans
Total Past Due	$ 14,442	$ 15,501
Financing Receivable, Recorded Investment, Current	1,858,465	1,829,539
Total	1,872,907	1,845,040
Commercial & Industrial
Aging of recorded investment in loans by past due category and class of loans
Total Past Due	1,507	1,683
Financing Receivable, Recorded Investment, Current	463,408	474,406
Total	464,915	476,089
Farmland
Aging of recorded investment in loans by past due category and class of loans
Total Past Due	3,639	303
Financing Receivable, Recorded Investment, Current	105,088	110,897
Total	108,727	111,200
Non Farm, Non Residential
Aging of recorded investment in loans by past due category and class of loans
Total Past Due	0	368
Financing Receivable, Recorded Investment, Current	198,916	195,120
Total	198,916	195,488
Agriculture
Aging of recorded investment in loans by past due category and class of loans
Total Past Due	1,260	713
Financing Receivable, Recorded Investment, Current	147,209	151,059
Total	148,469	151,772
All Other Commercial
Aging of recorded investment in loans by past due category and class of loans
Total Past Due	27	15
Financing Receivable, Recorded Investment, Current	194,912	178,171
Total	194,939	178,186
First Liens
Aging of recorded investment in loans by past due category and class of loans
Total Past Due	2,920	6,332
Financing Receivable, Recorded Investment, Current	255,766	264,446
Total	258,686	270,778
Home Equity
Aging of recorded investment in loans by past due category and class of loans
Total Past Due	182	277
Financing Receivable, Recorded Investment, Current	36,059	35,782
Total	36,241	36,059
Junior Liens
Aging of recorded investment in loans by past due category and class of loans
Total Past Due	449	495
Financing Receivable, Recorded Investment, Current	40,111	36,912
Total	40,560	37,407
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	82,828	67,799
Total	82,828	67,799
All Other Residential
Aging of recorded investment in loans by past due category and class of loans
Total Past Due	12	54
Financing Receivable, Recorded Investment, Current	12,258	12,982
Total	12,270	13,036
Motor Vehicle
Aging of recorded investment in loans by past due category and class of loans
Total Past Due	4,316	5,093
Financing Receivable, Recorded Investment, Current	296,607	277,604
Total	300,923	282,697
All Other Consumer
Aging of recorded investment in loans by past due category and class of loans
Total Past Due	130	168
Financing Receivable, Recorded Investment, Current	25,303	24,361
Total	25,433	24,529
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	5,109	9,571
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	289	370
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	235
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	0	153
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	502	246
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	0	15
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	608	3,862
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	116	186
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	200	271
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	42
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	3,287	4,048
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	107	143
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	2,125	1,920
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	403	114
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	0	22
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	0	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	87	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	872	954
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	10	64
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	136	0
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	12
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	602	732
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	15	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	7,208	4,010
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	815	1,199
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	3,639	46
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	0	215
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	671	467
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	27	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	1,440	1,516
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	56	27
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	113	224
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	12	0
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	427	313
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	$ 8	$ 3