Allowance for Loan Losses (Details 3) - USD ($) $ in Thousands	Sep. 30, 2017	Jun. 30, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Dec. 31, 2015
Aging of recorded investment in loans by past due category and class of loans
Fair value	$ 10,399		$ 8,600
Financing Receivable, Modifications, Recorded Investment	7,424	$ 7,984	8,565	$ 8,886	$ 9,155	$ 9,860
Commercial & Industrial
Aging of recorded investment in loans by past due category and class of loans
Fair value	352		501
Farmland
Aging of recorded investment in loans by past due category and class of loans
Fair value	258		0
Non Farm, Non Residential
Aging of recorded investment in loans by past due category and class of loans
Fair value	0		451
Agriculture
Aging of recorded investment in loans by past due category and class of loans
Fair value	285		0
All Other Commercial
Aging of recorded investment in loans by past due category and class of loans
Fair value	0		0
First Liens
Aging of recorded investment in loans by past due category and class of loans
Fair value	435		435
Home Equity
Aging of recorded investment in loans by past due category and class of loans
Fair value	0		0
Junior Liens
Aging of recorded investment in loans by past due category and class of loans
Fair value	0		0
Multifamily
Aging of recorded investment in loans by past due category and class of loans
Fair value	0		0
All Other Residential
Aging of recorded investment in loans by past due category and class of loans
Fair value	0		0
Motor Vehicle
Aging of recorded investment in loans by past due category and class of loans
Fair value	0		0
All Other Consumer
Aging of recorded investment in loans by past due category and class of loans
Fair value	0		0
Nonperforming Financing Receivable [Member]
Aging of recorded investment in loans by past due category and class of loans
Loans Past Due Over 90 Day Still Accruing	1,464		669
Nonaccrual	13,965		13,492
Financing Receivable, Modifications, Recorded Investment	3,488		3,798
Financing Receivable, Modifications, Nonaccrual	4,006		4,836
Nonperforming Financing Receivable [Member] | Commercial & Industrial
Aging of recorded investment in loans by past due category and class of loans
Loans Past Due Over 90 Day Still Accruing	0		45
Nonaccrual	1,900		2,405
Financing Receivable, Modifications, Recorded Investment	2		3
Financing Receivable, Modifications, Nonaccrual	212		383
Nonperforming Financing Receivable [Member] | Farmland
Aging of recorded investment in loans by past due category and class of loans
Loans Past Due Over 90 Day Still Accruing	0		0
Nonaccrual	4,145		978
Financing Receivable, Modifications, Recorded Investment	0		0
Financing Receivable, Modifications, Nonaccrual	0		0
Nonperforming Financing Receivable [Member] | Non Farm, Non Residential
Aging of recorded investment in loans by past due category and class of loans
Loans Past Due Over 90 Day Still Accruing	0		0
Nonaccrual	185		1,027
Financing Receivable, Modifications, Recorded Investment	1		60
Financing Receivable, Modifications, Nonaccrual	2,694		2,941
Nonperforming Financing Receivable [Member] | Agriculture
Aging of recorded investment in loans by past due category and class of loans
Loans Past Due Over 90 Day Still Accruing	0		0
Nonaccrual	890		744
Financing Receivable, Modifications, Recorded Investment	0		0
Financing Receivable, Modifications, Nonaccrual	0		0
Nonperforming Financing Receivable [Member] | All Other Commercial
Aging of recorded investment in loans by past due category and class of loans
Loans Past Due Over 90 Day Still Accruing	0		0
Nonaccrual	1,310		1,380
Financing Receivable, Modifications, Recorded Investment	0		0
Financing Receivable, Modifications, Nonaccrual	0		0
Nonperforming Financing Receivable [Member] | First Liens
Aging of recorded investment in loans by past due category and class of loans
Loans Past Due Over 90 Day Still Accruing	997		276
Nonaccrual	4,161		5,496
Financing Receivable, Modifications, Recorded Investment	3,262		3,525
Financing Receivable, Modifications, Nonaccrual	630		995
Nonperforming Financing Receivable [Member] | Home Equity
Aging of recorded investment in loans by past due category and class of loans
Loans Past Due Over 90 Day Still Accruing	44		0
Nonaccrual	268		285
Financing Receivable, Modifications, Recorded Investment	0		0
Financing Receivable, Modifications, Nonaccrual	0		0
Nonperforming Financing Receivable [Member] | Junior Liens
Aging of recorded investment in loans by past due category and class of loans
Loans Past Due Over 90 Day Still Accruing	26		55
Nonaccrual	167		202
Financing Receivable, Modifications, Recorded Investment	0		0
Financing Receivable, Modifications, Nonaccrual	0		0
Nonperforming Financing Receivable [Member] | Multifamily
Aging of recorded investment in loans by past due category and class of loans
Loans Past Due Over 90 Day Still Accruing	0		0
Nonaccrual	0		0
Financing Receivable, Modifications, Recorded Investment	0		0
Financing Receivable, Modifications, Nonaccrual	0		0
Nonperforming Financing Receivable [Member] | All Other Residential
Aging of recorded investment in loans by past due category and class of loans
Loans Past Due Over 90 Day Still Accruing	0		0
Nonaccrual	94		94
Financing Receivable, Modifications, Recorded Investment	0		0
Financing Receivable, Modifications, Nonaccrual	0		0
Nonperforming Financing Receivable [Member] | Motor Vehicle
Aging of recorded investment in loans by past due category and class of loans
Loans Past Due Over 90 Day Still Accruing	390		293
Nonaccrual	255		140
Financing Receivable, Modifications, Recorded Investment	12		60
Financing Receivable, Modifications, Nonaccrual	0		0
Nonperforming Financing Receivable [Member] | All Other Consumer
Aging of recorded investment in loans by past due category and class of loans
Loans Past Due Over 90 Day Still Accruing	7		0
Nonaccrual	590		741
Financing Receivable, Modifications, Recorded Investment	211		150
Financing Receivable, Modifications, Nonaccrual	$ 470		$ 517