Loans (Schedule of Composition of Loan Portfolio by Loan Classification) (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 521,763	$ 537,190
Less: Allowance for loan losses	(4,817)	(4,891)
Loans, net	516,946	532,299
Commercial and industrial - organic [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	39,376	41,526
Commercial and industrial - government guaranteed [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	35,143	31,367
Commercial and industrial - syndicated [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	12,091	12,134
Commercial Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	86,610	85,027
Residential construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,021	1,552
Commercial construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	3,663	5,078
Land and land development [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	9,636	10,894
Real Estate Construction and Land [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	14,320	17,524
1-4 family residential, first lien, investment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	40,807	40,311
1-4 family residential, first lien, owner occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	16,304	16,775
1-4 family residential, junior lien [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	2,894	3,169
1-4 family residential - purchased [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	18,451	18,647
Home equity lines of credit, first lien [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	8,544	8,325
Home equity lines of credit, junior lien [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	9,472	10,912
Farm [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	9,298	10,397
Multifamily [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	24,432	27,328
Commercial owner occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	95,286	93,800
Commercial non-owner occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	116,890	123,214
Real Estate Mortgages [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	342,378	352,878
Consumer revolving credit [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	24,341	21,540
Consumer all other credit [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	4,196	5,530
Student Loans Purchased [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	49,918	54,691
Consumer Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 78,455	$ 81,761