Allowance for Loan Losses (Details 5) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Analysis of risk category of loans by class of loans
Total loans	$ 1,755,065	$ 1,780,350
Commercial & Industrial
Analysis of risk category of loans by class of loans
Total loans	476,808	454,160
Farmland
Analysis of risk category of loans by class of loans
Total loans	94,433	93,839
Non Farm, Non Residential
Analysis of risk category of loans by class of loans
Total loans	225,031	233,760
Agriculture
Analysis of risk category of loans by class of loans
Total loans	125,715	148,102
All Other Commercial
Analysis of risk category of loans by class of loans
Total loans	119,707	114,661
First Liens
Analysis of risk category of loans by class of loans
Total loans	310,606	315,559
Home Equity
Analysis of risk category of loans by class of loans
Total loans	38,509	40,463
Junior Liens
Analysis of risk category of loans by class of loans
Total loans	31,436	31,962
Multifamily
Analysis of risk category of loans by class of loans
Total loans	60,632	72,133
All Other Residential
Analysis of risk category of loans by class of loans
Total loans	7,659	9,055
Motor Vehicle
Analysis of risk category of loans by class of loans
Total loans	244,380	245,063
All Other Consumer
Analysis of risk category of loans by class of loans
Total loans	20,149	21,593
Pass
Analysis of risk category of loans by class of loans
Total loans	1,106,440	1,116,963
Pass | Commercial & Industrial
Analysis of risk category of loans by class of loans
Total loans	413,969	393,449
Pass | Farmland
Analysis of risk category of loans by class of loans
Total loans	86,491	85,772
Pass | Non Farm, Non Residential
Analysis of risk category of loans by class of loans
Total loans	188,390	186,346
Pass | Agriculture
Analysis of risk category of loans by class of loans
Total loans	115,942	138,713
Pass | All Other Commercial
Analysis of risk category of loans by class of loans
Total loans	105,789	101,942
Pass | First Liens
Analysis of risk category of loans by class of loans
Total loans	103,169	104,854
Pass | Home Equity
Analysis of risk category of loans by class of loans
Total loans	11,602	12,592
Pass | Junior Liens
Analysis of risk category of loans by class of loans
Total loans	7,642	8,112
Pass | Multifamily
Analysis of risk category of loans by class of loans
Total loans	57,893	69,080
Pass | All Other Residential
Analysis of risk category of loans by class of loans
Total loans	1,295	1,799
Pass | Motor Vehicle
Analysis of risk category of loans by class of loans
Total loans	11,323	11,135
Pass | All Other Consumer
Analysis of risk category of loans by class of loans
Total loans	2,935	3,169
Special Mention
Analysis of risk category of loans by class of loans
Total loans	73,726	79,040
Special Mention | Commercial & Industrial
Analysis of risk category of loans by class of loans
Total loans	30,781	29,081
Special Mention | Farmland
Analysis of risk category of loans by class of loans
Total loans	7,438	7,618
Special Mention | Non Farm, Non Residential
Analysis of risk category of loans by class of loans
Total loans	14,259	21,765
Special Mention | Agriculture
Analysis of risk category of loans by class of loans
Total loans	6,940	7,399
Special Mention | All Other Commercial
Analysis of risk category of loans by class of loans
Total loans	6,397	4,356
Special Mention | First Liens
Analysis of risk category of loans by class of loans
Total loans	5,288	5,929
Special Mention | Home Equity
Analysis of risk category of loans by class of loans
Total loans	413	375
Special Mention | Junior Liens
Analysis of risk category of loans by class of loans
Total loans	112	173
Special Mention | Multifamily
Analysis of risk category of loans by class of loans
Total loans	1,513	1,801
Special Mention | All Other Residential
Analysis of risk category of loans by class of loans
Total loans	0	0
Special Mention | Motor Vehicle
Analysis of risk category of loans by class of loans
Total loans	427	402
Special Mention | All Other Consumer
Analysis of risk category of loans by class of loans
Total loans	158	141
Substandard
Analysis of risk category of loans by class of loans
Total loans	69,073	70,119
Substandard | Commercial & Industrial
Analysis of risk category of loans by class of loans
Total loans	26,548	24,013
Substandard | Farmland
Analysis of risk category of loans by class of loans
Total loans	492	436
Substandard | Non Farm, Non Residential
Analysis of risk category of loans by class of loans
Total loans	22,346	25,613
Substandard | Agriculture
Analysis of risk category of loans by class of loans
Total loans	2,557	1,746
Substandard | All Other Commercial
Analysis of risk category of loans by class of loans
Total loans	5,763	7,055
Substandard | First Liens
Analysis of risk category of loans by class of loans
Total loans	7,891	7,733
Substandard | Home Equity
Analysis of risk category of loans by class of loans
Total loans	1,326	1,374
Substandard | Junior Liens
Analysis of risk category of loans by class of loans
Total loans	565	561
Substandard | Multifamily
Analysis of risk category of loans by class of loans
Total loans	1,222	1,249
Substandard | All Other Residential
Analysis of risk category of loans by class of loans
Total loans	27	28
Substandard | Motor Vehicle
Analysis of risk category of loans by class of loans
Total loans	258	224
Substandard | All Other Consumer
Analysis of risk category of loans by class of loans
Total loans	78	87
Doubtful
Analysis of risk category of loans by class of loans
Total loans	4,249	4,271
Doubtful | Commercial & Industrial
Analysis of risk category of loans by class of loans
Total loans	2,836	2,900
Doubtful | Farmland
Analysis of risk category of loans by class of loans
Total loans	0	0
Doubtful | Non Farm, Non Residential
Analysis of risk category of loans by class of loans
Total loans	36	36
Doubtful | Agriculture
Analysis of risk category of loans by class of loans
Total loans	177	177
Doubtful | All Other Commercial
Analysis of risk category of loans by class of loans
Total loans	107	33
Doubtful | First Liens
Analysis of risk category of loans by class of loans
Total loans	1,002	1,035
Doubtful | Home Equity
Analysis of risk category of loans by class of loans
Total loans	12	6
Doubtful | Junior Liens
Analysis of risk category of loans by class of loans
Total loans	61	63
Doubtful | Multifamily
Analysis of risk category of loans by class of loans
Total loans	0	0
Doubtful | All Other Residential
Analysis of risk category of loans by class of loans
Total loans	0	0
Doubtful | Motor Vehicle
Analysis of risk category of loans by class of loans
Total loans	0	0
Doubtful | All Other Consumer
Analysis of risk category of loans by class of loans
Total loans	18	21
Not Rated
Analysis of risk category of loans by class of loans
Total loans	501,577	509,957
Not Rated | Commercial & Industrial
Analysis of risk category of loans by class of loans
Total loans	2,674	4,717
Not Rated | Farmland
Analysis of risk category of loans by class of loans
Total loans	12	13
Not Rated | Non Farm, Non Residential
Analysis of risk category of loans by class of loans
Total loans	0	0
Not Rated | Agriculture
Analysis of risk category of loans by class of loans
Total loans	99	67
Not Rated | All Other Commercial
Analysis of risk category of loans by class of loans
Total loans	1,651	1,275
Not Rated | First Liens
Analysis of risk category of loans by class of loans
Total loans	193,256	196,008
Not Rated | Home Equity
Analysis of risk category of loans by class of loans
Total loans	25,156	26,116
Not Rated | Junior Liens
Analysis of risk category of loans by class of loans
Total loans	23,056	23,053
Not Rated | Multifamily
Analysis of risk category of loans by class of loans
Total loans	4	3
Not Rated | All Other Residential
Analysis of risk category of loans by class of loans
Total loans	6,337	7,228
Not Rated | Motor Vehicle
Analysis of risk category of loans by class of loans
Total loans	232,372	233,302
Not Rated | All Other Consumer
Analysis of risk category of loans by class of loans
Total loans	$ 16,960	$ 18,175