Allowance for Loan Losses (Details 6) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Analysis of risk category of loans by class of loans
Financing Receivable Recorded Investment	$ 2,790,377	$ 2,666,442
Financing Receivable, Past Due	26,433	31,590
Financing Receivable, Not Past Due	2,763,944	2,634,852
Total loans	2,777,634	2,652,530
Loans not rated	2,777,634
Commercial & Industrial
Analysis of risk category of loans by class of loans
Financing Receivable Recorded Investment	745,990	599,955
Financing Receivable, Past Due	2,518	5,030
Financing Receivable, Not Past Due	743,472	594,925
Total loans	743,845	597,709
Farmland
Analysis of risk category of loans by class of loans
Financing Receivable Recorded Investment	126,871	139,951
Financing Receivable, Past Due	1,416	2,221
Financing Receivable, Not Past Due	125,455	137,730
Total loans	125,073	137,275
Non Farm, Non Residential
Analysis of risk category of loans by class of loans
Financing Receivable Recorded Investment	376,217	402,707
Financing Receivable, Past Due	4,816	3,853
Financing Receivable, Not Past Due	371,401	398,854
Total loans	374,809	401,775
Agriculture
Analysis of risk category of loans by class of loans
Financing Receivable Recorded Investment	149,976	163,199
Financing Receivable, Past Due	810	405
Financing Receivable, Not Past Due	149,166	162,794
Total loans	147,931	160,126
All Other Commercial
Analysis of risk category of loans by class of loans
Financing Receivable Recorded Investment	304,382	288,954
Financing Receivable, Past Due	885	109
Financing Receivable, Not Past Due	303,497	288,845
Total loans	302,718	287,562
First Liens
Analysis of risk category of loans by class of loans
Financing Receivable Recorded Investment	366,914	385,126
Financing Receivable, Past Due	6,219	9,202
Financing Receivable, Not Past Due	360,695	375,924
Total loans	365,671	383,912
Home Equity
Analysis of risk category of loans by class of loans
Financing Receivable Recorded Investment	65,005	71,034
Financing Receivable, Past Due	554	221
Financing Receivable, Not Past Due	64,451	70,813
Total loans	64,863	70,842
Junior Liens
Analysis of risk category of loans by class of loans
Financing Receivable Recorded Investment	55,348	55,097
Financing Receivable, Past Due	895	564
Financing Receivable, Not Past Due	54,453	54,533
Total loans	55,216	54,974
Multifamily
Analysis of risk category of loans by class of loans
Financing Receivable Recorded Investment	155,404	148,282
Financing Receivable, Past Due	1,609	0
Financing Receivable, Not Past Due	153,795	148,282
Total loans	155,055	147,943
All Other Residential
Analysis of risk category of loans by class of loans
Financing Receivable Recorded Investment	16,900	24,482
Financing Receivable, Past Due	352	1,972
Financing Receivable, Not Past Due	16,548	22,510
Total loans	16,852	24,406
Motor Vehicle
Analysis of risk category of loans by class of loans
Financing Receivable Recorded Investment	397,821	355,691
Financing Receivable, Past Due	6,220	7,741
Financing Receivable, Not Past Due	391,601	347,950
Total loans	396,183	354,198
All Other Consumer
Analysis of risk category of loans by class of loans
Financing Receivable Recorded Investment	29,549	31,964
Financing Receivable, Past Due	139	272
Financing Receivable, Not Past Due	29,410	31,692
Total loans	29,418	31,808
Pass
Analysis of risk category of loans by class of loans
Total loans	1,836,654	1,821,763
Pass | Commercial & Industrial
Analysis of risk category of loans by class of loans
Total loans	694,384	549,341
Pass | Farmland
Analysis of risk category of loans by class of loans
Total loans	111,597	119,858
Pass | Non Farm, Non Residential
Analysis of risk category of loans by class of loans
Total loans	350,871	381,404
Pass | Agriculture
Analysis of risk category of loans by class of loans
Total loans	123,953	127,144
Pass | All Other Commercial
Analysis of risk category of loans by class of loans
Total loans	298,835	283,266
Pass | First Liens
Analysis of risk category of loans by class of loans
Total loans	94,359	174,338
Pass | Home Equity
Analysis of risk category of loans by class of loans
Total loans	2,537	18,417
Pass | Junior Liens
Analysis of risk category of loans by class of loans
Total loans	2,115	2,839
Pass | Multifamily
Analysis of risk category of loans by class of loans
Total loans	153,622	146,497
Pass | All Other Residential
Analysis of risk category of loans by class of loans
Total loans	3,684	12,624
Pass | Motor Vehicle
Analysis of risk category of loans by class of loans
Total loans	430	2,880
Pass | All Other Consumer
Analysis of risk category of loans by class of loans
Total loans	267	3,155
Special Mention
Analysis of risk category of loans by class of loans
Total loans	45,486	41,100
Special Mention | Commercial & Industrial
Analysis of risk category of loans by class of loans
Total loans	17,364	19,253
Special Mention | Farmland
Analysis of risk category of loans by class of loans
Total loans	5,706	8,673
Special Mention | Non Farm, Non Residential
Analysis of risk category of loans by class of loans
Total loans	11,599	4,424
Special Mention | Agriculture
Analysis of risk category of loans by class of loans
Total loans	6,784	4,507
Special Mention | All Other Commercial
Analysis of risk category of loans by class of loans
Total loans	3,036	3,141
Special Mention | First Liens
Analysis of risk category of loans by class of loans
Total loans	856	926
Special Mention | Home Equity
Analysis of risk category of loans by class of loans
Total loans	0	0
Special Mention | Junior Liens
Analysis of risk category of loans by class of loans
Total loans	33	64
Special Mention | Multifamily
Analysis of risk category of loans by class of loans
Total loans	108	112
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	0	0
Special Mention | All Other Consumer
Analysis of risk category of loans by class of loans
Total loans	0	0
Substandard
Analysis of risk category of loans by class of loans
Total loans	64,853	82,662
Substandard | Commercial & Industrial
Analysis of risk category of loans by class of loans
Total loans	19,298	26,349
Substandard | Farmland
Analysis of risk category of loans by class of loans
Total loans	7,684	8,644
Substandard | Non Farm, Non Residential
Analysis of risk category of loans by class of loans
Total loans	11,637	12,269
Substandard | Agriculture
Analysis of risk category of loans by class of loans
Total loans	16,697	27,490
Substandard | All Other Commercial
Analysis of risk category of loans by class of loans
Total loans	817	1,120
Substandard | First Liens
Analysis of risk category of loans by class of loans
Total loans	6,301	4,382
Substandard | Home Equity
Analysis of risk category of loans by class of loans
Total loans	170	134
Substandard | Junior Liens
Analysis of risk category of loans by class of loans
Total loans	307	178
Substandard | Multifamily
Analysis of risk category of loans by class of loans
Total loans	1,311	1,315
Substandard | All Other Residential
Analysis of risk category of loans by class of loans
Total loans	11	205
Substandard | Motor Vehicle
Analysis of risk category of loans by class of loans
Total loans	579	538
Substandard | All Other Consumer
Analysis of risk category of loans by class of loans
Total loans	41	38
Doubtful
Analysis of risk category of loans by class of loans
Total loans	0	92
Doubtful | Commercial & Industrial
Analysis of risk category of loans by class of loans
Total loans	0	5
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	0	0
Doubtful | All Other Commercial
Analysis of risk category of loans by class of loans
Total loans	0	0
Doubtful | First Liens
Analysis of risk category of loans by class of loans
Total loans	0	0
Doubtful | Home Equity
Analysis of risk category of loans by class of loans
Total loans	0	11
Doubtful | Junior Liens
Analysis of risk category of loans by class of loans
Total loans	0	76
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	0	0
Not Rated
Analysis of risk category of loans by class of loans
Total loans	830,641	706,913
Not Rated | Commercial & Industrial
Analysis of risk category of loans by class of loans
Total loans	12,799	2,761
Not Rated | Farmland
Analysis of risk category of loans by class of loans
Total loans	86	100
Not Rated | Non Farm, Non Residential
Analysis of risk category of loans by class of loans
Total loans	702	3,678
Not Rated | Agriculture
Analysis of risk category of loans by class of loans
Total loans	497	985
Not Rated | All Other Commercial
Analysis of risk category of loans by class of loans
Total loans	30	35
Not Rated | First Liens
Analysis of risk category of loans by class of loans
Total loans	264,155	204,266
Not Rated | Home Equity
Analysis of risk category of loans by class of loans
Total loans	62,156	52,280
Not Rated | Junior Liens
Analysis of risk category of loans by class of loans
Total loans	52,761	51,817
Not Rated | Multifamily
Analysis of risk category of loans by class of loans
Total loans	14	19
Not Rated | All Other Residential
Analysis of risk category of loans by class of loans
Total loans	13,157	11,577
Not Rated | Motor Vehicle
Analysis of risk category of loans by class of loans
Total loans	395,174	350,780
Not Rated | All Other Consumer
Analysis of risk category of loans by class of loans
Total loans	$ 29,110	$ 28,615