Loans Receivable and Allowance for Loan Losses (Classes of the Loan Portfolio Summarized by the Aggregate Risk Rating) (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Total Summarized by Aggregate Risk Rating [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying Amount	$ 400,415	$ 350,213
Pass [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying Amount	391,264	338,939
Special Mention [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying Amount	4,477	1,837
Substandard [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying Amount	4,674	9,437
Doubtful or Loss [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying Amount	0	0
Total Summarized by Performance of Individual Credits [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying Amount	306,178	210,038
Performing Financial Instruments [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying Amount	304,964	209,598
Nonperforming Financial Instruments [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying Amount	1,214	440
Commercial Real Estate Loans [Member] | Total Summarized by Aggregate Risk Rating [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying Amount	315,270	279,123
Commercial Real Estate Loans [Member] | Pass [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying Amount	306,177	267,892
Commercial Real Estate Loans [Member] | Special Mention [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying Amount	4,442	1,837
Commercial Real Estate Loans [Member] | Substandard [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying Amount	4,651	9,394
Commercial Real Estate Loans [Member] | Doubtful or Loss [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying Amount	0	0
Commercial, financial and agricultural loans [Member] | Total Summarized by Aggregate Risk Rating [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying Amount	85,145	71,090
Commercial, financial and agricultural loans [Member] | Pass [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying Amount	85,087	71,047
Commercial, financial and agricultural loans [Member] | Special Mention [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying Amount	35	0
Commercial, financial and agricultural loans [Member] | Substandard [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying Amount	23	43
Commercial, financial and agricultural loans [Member] | Doubtful or Loss [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying Amount	0	0
Residential Real Estate Loans [Member] | Total Summarized by Performance of Individual Credits [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying Amount	237,897	161,820
Residential Real Estate Loans [Member] | Performing Financial Instruments [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying Amount	236,711	161,380
Residential Real Estate Loans [Member] | Nonperforming Financial Instruments [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying Amount	1,186	440
Construction Real Estate Loans [Member] | Total Summarized by Performance of Individual Credits [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying Amount	20,056	18,987
Construction Real Estate Loans [Member] | Performing Financial Instruments [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying Amount	20,028	18,987
Construction Real Estate Loans [Member] | Nonperforming Financial Instruments [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying Amount	28	0
Consumer loans to individuals [Member] | Total Summarized by Performance of Individual Credits [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying Amount	48,225	29,231
Consumer loans to individuals [Member] | Performing Financial Instruments [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying Amount	48,225	29,231
Consumer loans to individuals [Member] | Nonperforming Financial Instruments [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying Amount	$ 0	$ 0