Loans and Related Allowance for Credit Losses (Loan Portfolio Summarized by the Past Due Status) (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 4,130	$ 2,349
Current	385,884	398,241
Total loans	390,014	400,590
Financing Receivable, Recorded Investment, 89 Days Past Due and Still Accruing	136	386
Excluding Loans Acquired with Credit Deterioration [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	4,027	1,975
Current	384,950	397,545
Total loans	388,977	399,520
Financing Receivable, Recorded Investment, 89 Days Past Due and Still Accruing	134	383
Acquired with Credit Deterioration [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	103	374
Current	934	696
Total loans	1,037	1,070
Financing Receivable, Recorded Investment, 89 Days Past Due and Still Accruing	2	3
30-59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	3,292	1,140
30-59 Days Past Due [Member] | Excluding Loans Acquired with Credit Deterioration [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	3,191	769
30-59 Days Past Due [Member] | Acquired with Credit Deterioration [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	101	371
60-89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	38	149
60-89 Days Past Due [Member] | Excluding Loans Acquired with Credit Deterioration [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	38	149
Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	800	1,060
Greater than 90 Days Past Due [Member] | Excluding Loans Acquired with Credit Deterioration [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	798	1,057
Greater than 90 Days Past Due [Member] | Acquired with Credit Deterioration [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2	3
Commercial, Financial and Agricultural [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	48,833	51,785
Commercial, Financial and Agricultural [Member] | Commercial Portfolio Segment [Member] | Excluding Loans Acquired with Credit Deterioration [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	26	60
Current	48,807	51,725
Total loans	48,833	51,785
Commercial, Financial and Agricultural [Member] | Commercial Portfolio Segment [Member] | 30-59 Days Past Due [Member] | Excluding Loans Acquired with Credit Deterioration [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	26	60
Commercial Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	16,621	16,377
Commercial Loan [Member] | Real Estate Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	118,265	126,613
Commercial Loan [Member] | Real Estate Portfolio Segment [Member] | Excluding Loans Acquired with Credit Deterioration [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	182	67
Current	117,727	126,180
Total loans	117,909	126,247
Commercial Loan [Member] | Real Estate Portfolio Segment [Member] | Acquired with Credit Deterioration [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	356	366
Total loans	356	366
Commercial Loan [Member] | Real Estate Portfolio Segment [Member] | 30-59 Days Past Due [Member] | Excluding Loans Acquired with Credit Deterioration [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	136	19
Commercial Loan [Member] | Real Estate Portfolio Segment [Member] | Greater than 90 Days Past Due [Member] | Excluding Loans Acquired with Credit Deterioration [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	46	48
Construction Loan [Member] | Real Estate Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	51,108	46,459
Construction Loan [Member] | Real Estate Portfolio Segment [Member] | Excluding Loans Acquired with Credit Deterioration [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2,558	287
Current	48,550	46,172
Total loans	51,108	46,459
Construction Loan [Member] | Real Estate Portfolio Segment [Member] | 30-59 Days Past Due [Member] | Excluding Loans Acquired with Credit Deterioration [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2,558	287
Mortgage Loan [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	147,226	150,538
Mortgage Loan [Member] | Consumer Portfolio Segment [Member] | Excluding Loans Acquired with Credit Deterioration [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,204	1,468
Current	145,341	148,366
Total loans	146,545	149,834
Financing Receivable, Recorded Investment, 89 Days Past Due and Still Accruing	134	359
Mortgage Loan [Member] | Consumer Portfolio Segment [Member] | Acquired with Credit Deterioration [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	103	374
Current	578	330
Total loans	681	704
Financing Receivable, Recorded Investment, 89 Days Past Due and Still Accruing	2	3
Mortgage Loan [Member] | Consumer Portfolio Segment [Member] | 30-59 Days Past Due [Member] | Excluding Loans Acquired with Credit Deterioration [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	414	348
Mortgage Loan [Member] | Consumer Portfolio Segment [Member] | 30-59 Days Past Due [Member] | Acquired with Credit Deterioration [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	101	371
Mortgage Loan [Member] | Consumer Portfolio Segment [Member] | 60-89 Days Past Due [Member] | Excluding Loans Acquired with Credit Deterioration [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	38	149
Mortgage Loan [Member] | Consumer Portfolio Segment [Member] | Greater than 90 Days Past Due [Member] | Excluding Loans Acquired with Credit Deterioration [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	752	971
Mortgage Loan [Member] | Consumer Portfolio Segment [Member] | Greater than 90 Days Past Due [Member] | Acquired with Credit Deterioration [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2	3
Obligations of State and Political Subdivisions [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	16,621	16,377
Obligations of State and Political Subdivisions [Member] | Commercial Portfolio Segment [Member] | Excluding Loans Acquired with Credit Deterioration [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	16,621	16,377
Total loans	16,621	16,377
Personal Loan [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	7,961	8,818
Personal Loan [Member] | Consumer Portfolio Segment [Member] | Excluding Loans Acquired with Credit Deterioration [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	57	93
Current	7,904	8,725
Total loans	7,961	8,818
Financing Receivable, Recorded Investment, 89 Days Past Due and Still Accruing		24
Personal Loan [Member] | Consumer Portfolio Segment [Member] | 30-59 Days Past Due [Member] | Excluding Loans Acquired with Credit Deterioration [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 57	55
Personal Loan [Member] | Consumer Portfolio Segment [Member] | Greater than 90 Days Past Due [Member] | Excluding Loans Acquired with Credit Deterioration [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		$ 38