Allowance for Loan Losses (Details 5) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Aging of recorded investment in loans by past due category and class of loans
Total Past Due	$ 12,986	$ 20,409
Financing Receivable, Recorded Investment, Current	1,760,002	1,768,416
Total	1,772,988	1,788,825
Commercial & Industrial
Aging of recorded investment in loans by past due category and class of loans
Total Past Due	2,336	4,036
Financing Receivable, Recorded Investment, Current	474,550	451,549
Total	476,886	455,585
Farmland
Aging of recorded investment in loans by past due category and class of loans
Total Past Due	592	0
Financing Receivable, Recorded Investment, Current	103,759	95,452
Total	104,351	95,452
Non Farm, Non Residential
Aging of recorded investment in loans by past due category and class of loans
Total Past Due	478	1,798
Financing Receivable, Recorded Investment, Current	211,797	232,440
Total	212,275	234,238
Agriculture
Aging of recorded investment in loans by past due category and class of loans
Total Past Due	1,289	766
Financing Receivable, Recorded Investment, Current	130,491	149,099
Total	131,780	149,865
All Other Commercial
Aging of recorded investment in loans by past due category and class of loans
Total Past Due	202	255
Financing Receivable, Recorded Investment, Current	121,340	115,014
Total	121,542	115,269
First Liens
Aging of recorded investment in loans by past due category and class of loans
Total Past Due	3,619	8,496
Financing Receivable, Recorded Investment, Current	298,948	308,068
Total	302,567	316,564
Home Equity
Aging of recorded investment in loans by past due category and class of loans
Total Past Due	376	484
Financing Receivable, Recorded Investment, Current	37,837	40,043
Total	38,213	40,527
Junior Liens
Aging of recorded investment in loans by past due category and class of loans
Total Past Due	580	570
Financing Receivable, Recorded Investment, Current	30,602	31,487
Total	31,182	32,057
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	71,916	72,310
Total	71,916	72,310
All Other Residential
Aging of recorded investment in loans by past due category and class of loans
Total Past Due	0	117
Financing Receivable, Recorded Investment, Current	8,840	8,961
Total	8,840	9,078
Motor Vehicle
Aging of recorded investment in loans by past due category and class of loans
Total Past Due	3,365	3,763
Financing Receivable, Recorded Investment, Current	247,719	242,406
Total	251,084	246,169
All Other Consumer
Aging of recorded investment in loans by past due category and class of loans
Total Past Due	149	124
Financing Receivable, Recorded Investment, Current	22,203	21,587
Total	22,352	21,711
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	4,988	12,277
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	190	574
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	25	0
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	157	1,528
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	306	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	54	255
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	1,083	6,011
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	154	141
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	306	270
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	112
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	2,619	3,026
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	94	114
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	2,761	2,145
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	321	416
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	567	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	0	68
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	368	18
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	813	963
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	61	33
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	87	83
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	495	557
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	49	7
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	5,237	5,987
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	1,825	3,046
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	0	0
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	321	202
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	615	502
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	148	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	1,723	1,522
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	161	310
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	187	217
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	5
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	251	180
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	$ 6	$ 3