Loan Credit Quality Analysis (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019	Sep. 30, 2019
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Pass	$ 458,773	$ 450,911
Financing Receivable, Recorded Investment, Special Mention	10,841	5,913
Financing Receivable Recorded Investment, Substandard Accruing	3,509	4,371
Financing Receivable, Recorded Investment, Nonaccrual Status	549	187
Loans and Leases Receivable, Gross, Carrying Amount	473,672	461,382	$ 465,596
Commercial and Industrial Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Pass	95,824	54,340
Financing Receivable, Recorded Investment, Special Mention	2,190	2,176
Financing Receivable Recorded Investment, Substandard Accruing	230	266
Financing Receivable, Recorded Investment, Nonaccrual Status	0	0
Loans and Leases Receivable, Gross, Carrying Amount	98,244	56,782	52,288
Construction And Land Development Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Pass	31,088	31,798
Financing Receivable, Recorded Investment, Special Mention	0	0
Financing Receivable Recorded Investment, Substandard Accruing	563	1,043
Financing Receivable, Recorded Investment, Nonaccrual Status	0	0
Loans and Leases Receivable, Gross, Carrying Amount	31,651	32,841	41,599
Commercial Real Estate Owner Occupied Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Pass	45,089	47,865
Financing Receivable, Recorded Investment, Special Mention	3,723	917
Financing Receivable Recorded Investment, Substandard Accruing	143	78
Financing Receivable, Recorded Investment, Nonaccrual Status	0	0
Loans and Leases Receivable, Gross, Carrying Amount	48,955	48,860
Commercial Real Estate Hotel Motel [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Pass	43,111	43,719
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	43,111	43,719
Commercial Real Estate Multifamily [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Pass	29,078	44,839
Financing Receivable, Recorded Investment, Special Mention	3,530	0
Financing Receivable Recorded Investment, Substandard Accruing	0	0
Financing Receivable, Recorded Investment, Nonaccrual Status	0	0
Loans and Leases Receivable, Gross, Carrying Amount	32,608	44,839
Commercial Real Estate Other Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Pass	125,574	132,030
Financing Receivable, Recorded Investment, Special Mention	483	849
Financing Receivable Recorded Investment, Substandard Accruing	45	21
Financing Receivable, Recorded Investment, Nonaccrual Status	216	0
Loans and Leases Receivable, Gross, Carrying Amount	126,318	132,900
Commercial Real Estate Loans, Total [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Pass	242,852	268,453
Financing Receivable, Recorded Investment, Special Mention	7,736	1,766
Financing Receivable Recorded Investment, Substandard Accruing	188	99
Financing Receivable, Recorded Investment, Nonaccrual Status	216	0
Loans and Leases Receivable, Gross, Carrying Amount	250,992	270,318	267,346
Residential Real Estate Consumer Mortgage Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Pass	34,682	45,247
Financing Receivable, Recorded Investment, Special Mention	398	962
Financing Receivable Recorded Investment, Substandard Accruing	2,276	2,527
Financing Receivable, Recorded Investment, Nonaccrual Status	221	187
Loans and Leases Receivable, Gross, Carrying Amount	37,577	48,923
Residential Real Estate Investment Property Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Pass	46,654	42,331
Financing Receivable, Recorded Investment, Special Mention	502	949
Financing Receivable Recorded Investment, Substandard Accruing	210	372
Financing Receivable, Recorded Investment, Nonaccrual Status	111	0
Loans and Leases Receivable, Gross, Carrying Amount	47,477	43,652
Residential Real Estate Loans, Total [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Pass	81,336	87,578
Financing Receivable, Recorded Investment, Special Mention	900	1,911
Financing Receivable Recorded Investment, Substandard Accruing	2,486	2,899
Financing Receivable, Recorded Investment, Nonaccrual Status	332	187
Loans and Leases Receivable, Gross, Carrying Amount	85,054	92,575	95,215
Consumer Installment and Revolving Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Pass	7,673	8,742
Financing Receivable, Recorded Investment, Special Mention	15	60
Financing Receivable Recorded Investment, Substandard Accruing	42	64
Financing Receivable, Recorded Investment, Nonaccrual Status	1	0
Loans and Leases Receivable, Gross, Carrying Amount	$ 7,731	$ 8,866	$ 9,148