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Loan Credit Quality Analysis (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Pass	$ 450,911	$ 466,410
Financing Receivable, Recorded Investment, Special Mention	5,913	4,361
Financing Receivable Recorded Investment, Substandard Accruing	4,371	6,528
Financing Receivable, Recorded Investment, Nonaccrual Status	187	178
Loans and Leases Receivable, Gross, Carrying Amount	461,382	477,477
Commercial and Industrial Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Pass	54,340	61,568
Financing Receivable, Recorded Investment, Special Mention	2,176	1,377
Financing Receivable Recorded Investment, Substandard Accruing	266	522
Financing Receivable, Recorded Investment, Nonaccrual Status	0	0
Loans and Leases Receivable, Gross, Carrying Amount	56,782	63,467
Construction And Land Development Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Pass	31,798	39,481
Financing Receivable, Recorded Investment, Special Mention	0	0
Financing Receivable Recorded Investment, Substandard Accruing	1,043	741
Financing Receivable, Recorded Investment, Nonaccrual Status	0	0
Loans and Leases Receivable, Gross, Carrying Amount	32,841	40,222
Commercial Real Estate Owner Occupied Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Pass	59,898	55,942
Financing Receivable, Recorded Investment, Special Mention	917	154
Financing Receivable Recorded Investment, Substandard Accruing	78	317
Financing Receivable, Recorded Investment, Nonaccrual Status	0	0
Loans and Leases Receivable, Gross, Carrying Amount	60,893	56,413
Commercial Real Estate Multifamily [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Pass	44,839	40,455
Financing Receivable, Recorded Investment, Special Mention	0	0
Financing Receivable Recorded Investment, Substandard Accruing	0	0
Financing Receivable, Recorded Investment, Nonaccrual Status	0	0
Loans and Leases Receivable, Gross, Carrying Amount	44,839	40,455
Commercial Real Estate Other Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Pass	163,716	163,449
Financing Receivable, Recorded Investment, Special Mention	849	1,208
Financing Receivable Recorded Investment, Substandard Accruing	21	371
Financing Receivable, Recorded Investment, Nonaccrual Status	0	0
Loans and Leases Receivable, Gross, Carrying Amount	164,586	165,028
Commercial Real Estate Loans, Total [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Pass	268,453	259,846
Financing Receivable, Recorded Investment, Special Mention	1,766	1,362
Financing Receivable Recorded Investment, Substandard Accruing	99	688
Financing Receivable, Recorded Investment, Nonaccrual Status	0	0
Loans and Leases Receivable, Gross, Carrying Amount	270,318	261,896
Residential Real Estate Consumer Mortgage Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Pass	45,247	50,903
Financing Receivable, Recorded Investment, Special Mention	962	1,374
Financing Receivable Recorded Investment, Substandard Accruing	2,527	3,768
Financing Receivable, Recorded Investment, Nonaccrual Status	187	178
Loans and Leases Receivable, Gross, Carrying Amount	48,923	56,223
Residential Real Estate Investment Property Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Pass	42,331	45,463
Financing Receivable, Recorded Investment, Special Mention	949	173
Financing Receivable Recorded Investment, Substandard Accruing	372	738
Financing Receivable, Recorded Investment, Nonaccrual Status	0	0
Loans and Leases Receivable, Gross, Carrying Amount	43,652	46,374
Residential Real Estate Loans, Total [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Pass	87,578	96,366
Financing Receivable, Recorded Investment, Special Mention	1,911	1,547
Financing Receivable Recorded Investment, Substandard Accruing	2,899	4,506
Financing Receivable, Recorded Investment, Nonaccrual Status	187	178
Loans and Leases Receivable, Gross, Carrying Amount	92,575	102,597
Consumer Installment and Revolving Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Pass	8,742	9,149
Financing Receivable, Recorded Investment, Special Mention	60	75
Financing Receivable Recorded Investment, Substandard Accruing	64	71
Financing Receivable, Recorded Investment, Nonaccrual Status	0	0
Loans and Leases Receivable, Gross, Carrying Amount	$ 8,866	$ 9,295

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