Allowance for Loan Losses (Details 4) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Aging of recorded investment in loans by past due category and class of loans
30-59 Days Past Due	$ 4,764	$ 12,277
60-89 Days Past Due	1,759	2,145
Greater than 90 days Past Due	5,486	5,987
Total Past Due	12,009	20,409
Current	1,777,730	1,768,416
Total	1,789,739	1,788,825
Commercial & Industrial
Aging of recorded investment in loans by past due category and class of loans
30-59 Days Past Due	386	574
60-89 Days Past Due	125	416
Greater than 90 days Past Due	3,568	3,046
Total Past Due	4,079	4,036
Current	495,992	451,549
Total	500,071	455,585
Farmland
Aging of recorded investment in loans by past due category and class of loans
30-59 Days Past Due	0	0
60-89 Days Past Due	0	0
Greater than 90 days Past Due	0	0
Total Past Due	0	0
Current	97,763	95,452
Total	97,763	95,452
Non Farm, Non Residential
Aging of recorded investment in loans by past due category and class of loans
30-59 Days Past Due	551	1,528
60-89 Days Past Due	223	68
Greater than 90 days Past Due	206	202
Total Past Due	980	1,798
Current	217,839	232,440
Total	218,819	234,238
Agriculture
Aging of recorded investment in loans by past due category and class of loans
30-59 Days Past Due	24	246
60-89 Days Past Due	271	18
Greater than 90 days Past Due	27	502
Total Past Due	322	766
Current	132,839	149,099
Total	133,161	149,865
All Other Commercial
Aging of recorded investment in loans by past due category and class of loans
30-59 Days Past Due	67	255
60-89 Days Past Due	0	0
Greater than 90 days Past Due	0	0
Total Past Due	67	255
Current	124,410	115,014
Total	124,477	115,269
First Liens
Aging of recorded investment in loans by past due category and class of loans
30-59 Days Past Due	594	6,011
60-89 Days Past Due	703	963
Greater than 90 days Past Due	1,360	1,522
Total Past Due	2,657	8,496
Current	303,745	308,068
Total	306,402	316,564
Home Equity
Aging of recorded investment in loans by past due category and class of loans
30-59 Days Past Due	182	141
60-89 Days Past Due	25	33
Greater than 90 days Past Due	125	310
Total Past Due	332	484
Current	37,747	40,043
Total	38,079	40,527
Junior Liens
Aging of recorded investment in loans by past due category and class of loans
30-59 Days Past Due	191	270
60-89 Days Past Due	17	83
Greater than 90 days Past Due	158	217
Total Past Due	366	570
Current	30,533	31,487
Total	30,899	32,057
Multifamily
Aging of recorded investment in loans by past due category and class of loans
30-59 Days Past Due	0	0
60-89 Days Past Due	0	0
Greater than 90 days Past Due	0	0
Total Past Due	0	0
Current	64,051	72,310
Total	64,051	72,310
All Other Residential
Aging of recorded investment in loans by past due category and class of loans
30-59 Days Past Due	0	112
60-89 Days Past Due	0	0
Greater than 90 days Past Due	0	5
Total Past Due	0	117
Current	6,978	8,961
Total	6,978	9,078
Motor Vehicle
Aging of recorded investment in loans by past due category and class of loans
30-59 Days Past Due	2,686	3,026
60-89 Days Past Due	379	557
Greater than 90 days Past Due	38	180
Total Past Due	3,103	3,763
Current	244,584	242,406
Total	247,687	246,169
All Other Consumer
Aging of recorded investment in loans by past due category and class of loans
30-59 Days Past Due	83	114
60-89 Days Past Due	16	7
Greater than 90 days Past Due	4	3
Total Past Due	103	124
Current	21,249	21,587
Total	$ 21,352	$ 21,711