Allowance for Loan Losses (Details 6) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Analysis of risk category of loans by class of loans
Financing Receivable Recorded Investment	$ 1,769,155	$ 1,769,790
Financing Receivable, Recorded Investment, Past Due	12,463	17,296
Financing Receivable, Recorded Investment, Current	1,756,692	1,752,494
Total loans	1,760,943	1,761,323
Loans not rated	1,760,943
Commercial & Industrial
Analysis of risk category of loans by class of loans
Financing Receivable Recorded Investment	481,114	478,989
Financing Receivable, Recorded Investment, Past Due	2,185	2,005
Financing Receivable, Recorded Investment, Current	478,929	476,984
Total loans	479,764	477,475
Farmland
Analysis of risk category of loans by class of loans
Financing Receivable Recorded Investment	110,172	106,860
Financing Receivable, Recorded Investment, Past Due	15	135
Financing Receivable, Recorded Investment, Current	110,157	106,725
Total loans	108,655	105,029
Non Farm, Non Residential
Analysis of risk category of loans by class of loans
Financing Receivable Recorded Investment	209,809	209,068
Financing Receivable, Recorded Investment, Past Due	487	2,224
Financing Receivable, Recorded Investment, Current	209,322	206,844
Total loans	209,355	208,630
Agriculture
Analysis of risk category of loans by class of loans
Financing Receivable Recorded Investment	126,699	143,543
Financing Receivable, Recorded Investment, Past Due	711	427
Financing Receivable, Recorded Investment, Current	125,988	143,116
Total loans	124,918	141,824
All Other Commercial
Analysis of risk category of loans by class of loans
Financing Receivable Recorded Investment	125,544	111,541
Financing Receivable, Recorded Investment, Past Due	262	57
Financing Receivable, Recorded Investment, Current	125,282	111,484
Total loans	124,907	111,022
First Liens
Analysis of risk category of loans by class of loans
Financing Receivable Recorded Investment	288,524	293,725
Financing Receivable, Recorded Investment, Past Due	5,282	7,812
Financing Receivable, Recorded Investment, Current	283,242	285,913
Total loans	287,613	292,828
Home Equity
Analysis of risk category of loans by class of loans
Financing Receivable Recorded Investment	35,915	37,724
Financing Receivable, Recorded Investment, Past Due	136	222
Financing Receivable, Recorded Investment, Current	35,779	37,502
Total loans	35,862	37,662
Junior Liens
Analysis of risk category of loans by class of loans
Financing Receivable Recorded Investment	33,670	33,261
Financing Receivable, Recorded Investment, Past Due	360	385
Financing Receivable, Recorded Investment, Current	33,310	32,876
Total loans	33,586	33,175
Multifamily
Analysis of risk category of loans by class of loans
Financing Receivable Recorded Investment	71,233	70,735
Financing Receivable, Recorded Investment, Past Due	93	0
Financing Receivable, Recorded Investment, Current	71,140	70,735
Total loans	71,074	70,597
All Other Residential
Analysis of risk category of loans by class of loans
Financing Receivable Recorded Investment	8,759	10,210
Financing Receivable, Recorded Investment, Past Due	19	15
Financing Receivable, Recorded Investment, Current	8,740	10,195
Total loans	8,738	10,185
Motor Vehicle
Analysis of risk category of loans by class of loans
Financing Receivable Recorded Investment	255,475	251,843
Financing Receivable, Recorded Investment, Past Due	2,789	3,961
Financing Receivable, Recorded Investment, Current	252,686	247,882
Total loans	254,344	250,720
All Other Consumer
Analysis of risk category of loans by class of loans
Financing Receivable Recorded Investment	22,241	22,291
Financing Receivable, Recorded Investment, Past Due	124	53
Financing Receivable, Recorded Investment, Current	22,117	22,238
Total loans	22,127	22,176
Pass
Analysis of risk category of loans by class of loans
Total loans	1,113,667	1,107,466
Pass | Commercial & Industrial
Analysis of risk category of loans by class of loans
Total loans	426,230	417,880
Pass | Farmland
Analysis of risk category of loans by class of loans
Total loans	92,090	93,418
Pass | Non Farm, Non Residential
Analysis of risk category of loans by class of loans
Total loans	181,758	180,659
Pass | Agriculture
Analysis of risk category of loans by class of loans
Total loans	102,904	121,244
Pass | All Other Commercial
Analysis of risk category of loans by class of loans
Total loans	112,941	95,850
Pass | First Liens
Analysis of risk category of loans by class of loans
Total loans	96,680	96,146
Pass | Home Equity
Analysis of risk category of loans by class of loans
Total loans	10,445	11,701
Pass | Junior Liens
Analysis of risk category of loans by class of loans
Total loans	7,512	7,493
Pass | Multifamily
Analysis of risk category of loans by class of loans
Total loans	69,448	68,972
Pass | All Other Residential
Analysis of risk category of loans by class of loans
Total loans	449	886
Pass | Motor Vehicle
Analysis of risk category of loans by class of loans
Total loans	10,342	10,287
Pass | All Other Consumer
Analysis of risk category of loans by class of loans
Total loans	2,868	2,930
Special Mention
Analysis of risk category of loans by class of loans
Total loans	49,705	56,638
Special Mention | Commercial & Industrial
Analysis of risk category of loans by class of loans
Total loans	17,236	20,422
Special Mention | Farmland
Analysis of risk category of loans by class of loans
Total loans	8,054	6,387
Special Mention | Non Farm, Non Residential
Analysis of risk category of loans by class of loans
Total loans	8,363	8,114
Special Mention | Agriculture
Analysis of risk category of loans by class of loans
Total loans	10,015	11,964
Special Mention | All Other Commercial
Analysis of risk category of loans by class of loans
Total loans	262	2,649
Special Mention | First Liens
Analysis of risk category of loans by class of loans
Total loans	3,405	4,594
Special Mention | Home Equity
Analysis of risk category of loans by class of loans
Total loans	360	387
Special Mention | Junior Liens
Analysis of risk category of loans by class of loans
Total loans	68	86
Special Mention | Multifamily
Analysis of risk category of loans by class of loans
Total loans	1,588	1,602
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	307	356
Special Mention | All Other Consumer
Analysis of risk category of loans by class of loans
Total loans	47	77
Substandard
Analysis of risk category of loans by class of loans
Total loans	92,648	87,604
Substandard | Commercial & Industrial
Analysis of risk category of loans by class of loans
Total loans	32,298	32,778
Substandard | Farmland
Analysis of risk category of loans by class of loans
Total loans	8,496	5,208
Substandard | Non Farm, Non Residential
Analysis of risk category of loans by class of loans
Total loans	19,234	19,857
Substandard | Agriculture
Analysis of risk category of loans by class of loans
Total loans	11,787	8,419
Substandard | All Other Commercial
Analysis of risk category of loans by class of loans
Total loans	9,560	10,887
Substandard | First Liens
Analysis of risk category of loans by class of loans
Total loans	9,171	8,598
Substandard | Home Equity
Analysis of risk category of loans by class of loans
Total loans	911	669
Substandard | Junior Liens
Analysis of risk category of loans by class of loans
Total loans	487	505
Substandard | Multifamily
Analysis of risk category of loans by class of loans
Total loans	15	0
Substandard | All Other Residential
Analysis of risk category of loans by class of loans
Total loans	23	24
Substandard | Motor Vehicle
Analysis of risk category of loans by class of loans
Total loans	550	534
Substandard | All Other Consumer
Analysis of risk category of loans by class of loans
Total loans	116	125
Doubtful
Analysis of risk category of loans by class of loans
Total loans	1,406	1,666
Doubtful | Commercial & Industrial
Analysis of risk category of loans by class of loans
Total loans	581	757
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	0	0
Doubtful | Agriculture
Analysis of risk category of loans by class of loans
Total loans	26	27
Doubtful | All Other Commercial
Analysis of risk category of loans by class of loans
Total loans	101	101
Doubtful | First Liens
Analysis of risk category of loans by class of loans
Total loans	619	699
Doubtful | Home Equity
Analysis of risk category of loans by class of loans
Total loans	10	10
Doubtful | Junior Liens
Analysis of risk category of loans by class of loans
Total loans	57	58
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	12	14
Not Rated
Analysis of risk category of loans by class of loans
Total loans	503,517	507,949
Not Rated | Commercial & Industrial
Analysis of risk category of loans by class of loans
Total loans	3,419	5,638
Not Rated | Farmland
Analysis of risk category of loans by class of loans
Total loans	15	16
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	186	170
Not Rated | All Other Commercial
Analysis of risk category of loans by class of loans
Total loans	2,043	1,535
Not Rated | First Liens
Analysis of risk category of loans by class of loans
Total loans	177,738	182,791
Not Rated | Home Equity
Analysis of risk category of loans by class of loans
Total loans	24,136	24,895
Not Rated | Junior Liens
Analysis of risk category of loans by class of loans
Total loans	25,462	25,033
Not Rated | Multifamily
Analysis of risk category of loans by class of loans
Total loans	23	23
Not Rated | All Other Residential
Analysis of risk category of loans by class of loans
Total loans	8,266	9,275
Not Rated | Motor Vehicle
Analysis of risk category of loans by class of loans
Total loans	243,145	239,543
Not Rated | All Other Consumer
Analysis of risk category of loans by class of loans
Total loans	$ 19,084	$ 19,030