Allowance for Loan Losses (Details 4) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Aging of recorded investment in loans by past due category and class of loans
30-59 Days Past Due	$ 8,196	$ 11,705
60-89 Days Past Due	2,509	2,858
Greater than 90 days Past Due	7,849	12,977
Total Past Due	18,554	27,540
Current	1,773,890	1,773,282
Total	1,792,444	1,800,822
Commercial & Industrial
Aging of recorded investment in loans by past due category and class of loans
30-59 Days Past Due	634	1,076
60-89 Days Past Due	428	266
Greater than 90 days Past Due	3,929	7,900
Total Past Due	4,991	9,242
Current	480,103	459,076
Total	485,094	468,318
Farmland
Aging of recorded investment in loans by past due category and class of loans
30-59 Days Past Due	225	0
60-89 Days Past Due	0	0
Greater than 90 days Past Due	0	0
Total Past Due	225	0
Current	91,629	92,602
Total	91,854	92,602
Non Farm, Non Residential
Aging of recorded investment in loans by past due category and class of loans
30-59 Days Past Due	91	362
60-89 Days Past Due	731	0
Greater than 90 days Past Due	780	2,042
Total Past Due	1,602	2,404
Current	237,360	239,183
Total	238,962	241,587
Agriculture
Aging of recorded investment in loans by past due category and class of loans
30-59 Days Past Due	192	31
60-89 Days Past Due	33	32
Greater than 90 days Past Due	0	0
Total Past Due	225	63
Current	107,137	136,388
Total	107,362	136,451
All Other Commercial
Aging of recorded investment in loans by past due category and class of loans
30-59 Days Past Due	163	50
60-89 Days Past Due	168	217
Greater than 90 days Past Due	293	188
Total Past Due	624	455
Current	118,822	108,184
Total	119,446	108,639
First Liens
Aging of recorded investment in loans by past due category and class of loans
30-59 Days Past Due	4,751	5,594
60-89 Days Past Due	543	1,513
Greater than 90 days Past Due	1,829	1,701
Total Past Due	7,123	8,808
Current	319,636	324,141
Total	326,759	332,949
Home Equity
Aging of recorded investment in loans by past due category and class of loans
30-59 Days Past Due	134	307
60-89 Days Past Due	8	7
Greater than 90 days Past Due	142	40
Total Past Due	284	354
Current	40,396	41,350
Total	40,680	41,704
Junior Liens
Aging of recorded investment in loans by past due category and class of loans
30-59 Days Past Due	210	392
60-89 Days Past Due	159	170
Greater than 90 days Past Due	312	471
Total Past Due	681	1,033
Current	32,013	32,269
Total	32,694	33,302
Multifamily
Aging of recorded investment in loans by past due category and class of loans
30-59 Days Past Due	0	103
60-89 Days Past Due	0	19
Greater than 90 days Past Due	419	400
Total Past Due	419	522
Current	73,532	66,138
Total	73,951	66,660
All Other Residential
Aging of recorded investment in loans by past due category and class of loans
30-59 Days Past Due	138	88
60-89 Days Past Due	0	0
Greater than 90 days Past Due	2	1
Total Past Due	140	89
Current	8,887	9,169
Total	9,027	9,258
Motor Vehicle
Aging of recorded investment in loans by past due category and class of loans
30-59 Days Past Due	1,541	3,579
60-89 Days Past Due	409	612
Greater than 90 days Past Due	142	227
Total Past Due	2,092	4,418
Current	243,903	243,146
Total	245,995	247,564
All Other Consumer
Aging of recorded investment in loans by past due category and class of loans
30-59 Days Past Due	117	123
60-89 Days Past Due	30	22
Greater than 90 days Past Due	1	7
Total Past Due	148	152
Current	20,472	21,636
Total	$ 20,620	$ 21,788