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Loan Credit Quality Analysis (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Pass	$ 466,410	$ 443,362
Financing Receivable, Recorded Investment, Special Mention	4,361	2,192
Financing Receivable Recorded Investment, Substandard Accruing	6,528	5,651
Financing Receivable, Recorded Investment, Nonaccrual Status	178	2,972
Loans and Leases Receivable, Gross, Carrying Amount	477,477	454,177
Commercial and Industrial Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Pass	61,568	58,842
Financing Receivable, Recorded Investment, Special Mention	1,377	94
Financing Receivable Recorded Investment, Substandard Accruing	522	119
Financing Receivable, Recorded Investment, Nonaccrual Status	0	31
Loans and Leases Receivable, Gross, Carrying Amount	63,467	59,086
Construction And Land Development Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Pass	39,481	39,049
Financing Receivable, Recorded Investment, Special Mention	0	90
Financing Receivable Recorded Investment, Substandard Accruing	741	468
Financing Receivable, Recorded Investment, Nonaccrual Status	0	0
Loans and Leases Receivable, Gross, Carrying Amount	40,222	39,607
Commercial Real Estate Owner Occupied Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Pass	55,942	43,615
Financing Receivable, Recorded Investment, Special Mention	154	240
Financing Receivable Recorded Investment, Substandard Accruing	317	337
Financing Receivable, Recorded Investment, Nonaccrual Status	0	0
Loans and Leases Receivable, Gross, Carrying Amount	56,413	44,192
Commercial Real Estate Multifamily [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Pass	40,455	52,167
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	40,455	52,167
Commercial Real Estate Other Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Pass	163,449	139,695
Financing Receivable, Recorded Investment, Special Mention	1,208	395
Financing Receivable Recorded Investment, Substandard Accruing	371	396
Financing Receivable, Recorded Investment, Nonaccrual Status	0	2,188
Loans and Leases Receivable, Gross, Carrying Amount	165,028	142,674
Commercial Real Estate Loans, Total [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Pass	259,846	235,477
Financing Receivable, Recorded Investment, Special Mention	1,362	635
Financing Receivable Recorded Investment, Substandard Accruing	688	733
Financing Receivable, Recorded Investment, Nonaccrual Status	0	2,188
Loans and Leases Receivable, Gross, Carrying Amount	261,896	239,033
Residential Real Estate Consumer Mortgage Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Pass	50,903	54,101
Financing Receivable, Recorded Investment, Special Mention	1,374	1,254
Financing Receivable Recorded Investment, Substandard Accruing	3,768	3,586
Financing Receivable, Recorded Investment, Nonaccrual Status	178	599
Loans and Leases Receivable, Gross, Carrying Amount	56,223	59,540
Residential Real Estate Investment Property Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Pass	45,463	46,463
Financing Receivable, Recorded Investment, Special Mention	173	53
Financing Receivable Recorded Investment, Substandard Accruing	738	667
Financing Receivable, Recorded Investment, Nonaccrual Status	0	140
Loans and Leases Receivable, Gross, Carrying Amount	46,374	47,323
Residential Real Estate Loans, Total [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Pass	96,366	100,564
Financing Receivable, Recorded Investment, Special Mention	1,547	1,307
Financing Receivable Recorded Investment, Substandard Accruing	4,506	4,253
Financing Receivable, Recorded Investment, Nonaccrual Status	178	739
Loans and Leases Receivable, Gross, Carrying Amount	102,597	106,863
Consumer Installment and Revolving Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Pass	9,149	9,430
Financing Receivable, Recorded Investment, Special Mention	75	66
Financing Receivable Recorded Investment, Substandard Accruing	71	78
Financing Receivable, Recorded Investment, Nonaccrual Status	0	14
Loans and Leases Receivable, Gross, Carrying Amount	$ 9,295	$ 9,588

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