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Loans Past Due Analysis (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016	Sep. 30, 2016
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Current	$ 446,280	$ 427,094
Financing Receivable, Recorded Investment, 30 To 89 Days Past Due	785	2,042
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	5	0
Financing Receivable, Recorded Investment, Total Still Accruing	447,070	429,136
Financing Receivable, Recorded Investment, Nonaccrual Status	2,902	2,370
Loans and Leases Receivable, Gross, Carrying Amount	449,972	431,506	$ 427,742
Commercial and Industrial Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Current	50,004	49,747
Financing Receivable, Recorded Investment, 30 To 89 Days Past Due	64	66
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	0	0
Financing Receivable, Recorded Investment, Total Still Accruing	50,068	49,813
Financing Receivable, Recorded Investment, Nonaccrual Status	33	37
Loans and Leases Receivable, Gross, Carrying Amount	50,101	49,850	50,881
Construction And Land Development Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Current	47,280	41,223
Financing Receivable, Recorded Investment, 30 To 89 Days Past Due	175	395
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	0	0
Financing Receivable, Recorded Investment, Total Still Accruing	47,455	41,618
Financing Receivable, Recorded Investment, Nonaccrual Status	0	32
Loans and Leases Receivable, Gross, Carrying Amount	47,455	41,650	44,004
Commercial Real Estate Owner Occupied Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Current	41,633	49,564
Financing Receivable, Recorded Investment, 30 To 89 Days Past Due	0	43
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	0	0
Financing Receivable, Recorded Investment, Total Still Accruing	41,633	49,607
Financing Receivable, Recorded Investment, Nonaccrual Status	0	138
Loans and Leases Receivable, Gross, Carrying Amount	41,633	49,745
Commercial Real Estate Multifamily [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Current	47,794	46,998
Financing Receivable, Recorded Investment, 30 To 89 Days Past Due	0	0
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	0	0
Financing Receivable, Recorded Investment, Total Still Accruing	47,794	46,998
Financing Receivable, Recorded Investment, Nonaccrual Status	0	0
Loans and Leases Receivable, Gross, Carrying Amount	47,794	46,998
Commercial Real Estate Other Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Current	140,453	121,608
Financing Receivable, Recorded Investment, 30 To 89 Days Past Due	0	199
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	0	0
Financing Receivable, Recorded Investment, Total Still Accruing	140,453	121,807
Financing Receivable, Recorded Investment, Nonaccrual Status	2,500	1,889
Loans and Leases Receivable, Gross, Carrying Amount	142,953	123,696
Commercial Real Estate Loans, Total [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Current	229,880	218,170
Financing Receivable, Recorded Investment, 30 To 89 Days Past Due	0	242
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	0	0
Financing Receivable, Recorded Investment, Total Still Accruing	229,880	218,412
Financing Receivable, Recorded Investment, Nonaccrual Status	2,500	2,027
Loans and Leases Receivable, Gross, Carrying Amount	232,380	220,439	211,558
Residential Real Estate Consumer Mortgage Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Current	62,300	64,059
Financing Receivable, Recorded Investment, 30 To 89 Days Past Due	403	1,282
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	0	0
Financing Receivable, Recorded Investment, Total Still Accruing	62,703	65,341
Financing Receivable, Recorded Investment, Nonaccrual Status	353	223
Loans and Leases Receivable, Gross, Carrying Amount	63,056	65,564
Residential Real Estate Investment Property Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Current	46,993	45,243
Financing Receivable, Recorded Investment, 30 To 89 Days Past Due	110	19
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	0	0
Financing Receivable, Recorded Investment, Total Still Accruing	47,103	45,262
Financing Receivable, Recorded Investment, Nonaccrual Status	0	29
Loans and Leases Receivable, Gross, Carrying Amount	47,103	45,291
Residential Real Estate Loans, Total [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Current	109,293	109,302
Financing Receivable, Recorded Investment, 30 To 89 Days Past Due	513	1,301
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	0	0
Financing Receivable, Recorded Investment, Total Still Accruing	109,806	110,603
Financing Receivable, Recorded Investment, Nonaccrual Status	353	252
Loans and Leases Receivable, Gross, Carrying Amount	110,159	110,855	112,303
Consumer Installment and Revolving Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Current	9,823	8,652
Financing Receivable, Recorded Investment, 30 To 89 Days Past Due	33	38
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	5	0
Financing Receivable, Recorded Investment, Total Still Accruing	9,861	8,690
Financing Receivable, Recorded Investment, Nonaccrual Status	16	22
Loans and Leases Receivable, Gross, Carrying Amount	$ 9,877	$ 8,712	$ 8,996

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Recorded investment in financing receivables that are 90 days or more past due and still accruing.

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