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Loan Credit Quality Analysis (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015	Sep. 30, 2015
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Pass	$ 412,633	$ 411,630
Financing Receivable, Recorded Investment, Special Mention	7,091	6,683
Financing Receivable Recorded Investment, Substandard Accruing	6,404	5,892
Financing Receivable, Recorded Investment, Nonaccrual Status	1,614	2,714
Loans and Leases Receivable, Gross, Carrying Amount	427,742	426,919	$ 423,191
Commercial and Industrial Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Pass	46,784	48,038
Financing Receivable, Recorded Investment, Special Mention	3,703	4,075
Financing Receivable Recorded Investment, Substandard Accruing	356	323
Financing Receivable, Recorded Investment, Nonaccrual Status	38	43
Loans and Leases Receivable, Gross, Carrying Amount	50,881	52,479	47,925
Construction And Land Development Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Pass	43,554	42,458
Financing Receivable, Recorded Investment, Special Mention	53	60
Financing Receivable Recorded Investment, Substandard Accruing	352	593
Financing Receivable, Recorded Investment, Nonaccrual Status	45	583
Loans and Leases Receivable, Gross, Carrying Amount	44,004	43,694	41,592
Commercial Real Estate Owner Occupied Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Pass	45,456	45,772
Financing Receivable, Recorded Investment, Special Mention	528	381
Financing Receivable Recorded Investment, Substandard Accruing	443	219
Financing Receivable, Recorded Investment, Nonaccrual Status	0	230
Loans and Leases Receivable, Gross, Carrying Amount	46,427	46,602
Commercial Real Estate Multifamily [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Pass	45,799	45,264
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	45,799	45,264
Commercial Real Estate Other Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Pass	117,006	110,159
Financing Receivable, Recorded Investment, Special Mention	64	36
Financing Receivable Recorded Investment, Substandard Accruing	741	272
Financing Receivable, Recorded Investment, Nonaccrual Status	1,521	1,520
Loans and Leases Receivable, Gross, Carrying Amount	119,332	111,987
Commercial Real Estate Loans, Total [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Pass	208,261	201,195
Financing Receivable, Recorded Investment, Special Mention	592	417
Financing Receivable Recorded Investment, Substandard Accruing	1,184	491
Financing Receivable, Recorded Investment, Nonaccrual Status	1,521	1,750
Loans and Leases Receivable, Gross, Carrying Amount	211,558	203,853	201,449
Residential Real Estate Consumer Mortgage Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Pass	61,379	64,502
Financing Receivable, Recorded Investment, Special Mention	2,579	1,964
Financing Receivable Recorded Investment, Substandard Accruing	3,270	3,218
Financing Receivable, Recorded Investment, Nonaccrual Status	10	325
Loans and Leases Receivable, Gross, Carrying Amount	67,238	70,009
Residential Real Estate Investment Property Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Pass	43,806	45,399
Financing Receivable, Recorded Investment, Special Mention	106	112
Financing Receivable Recorded Investment, Substandard Accruing	1,153	1,153
Financing Receivable, Recorded Investment, Nonaccrual Status	0	0
Loans and Leases Receivable, Gross, Carrying Amount	45,065	46,664
Residential Real Estate Loans, Total [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Pass	105,185	109,901
Financing Receivable, Recorded Investment, Special Mention	2,685	2,076
Financing Receivable Recorded Investment, Substandard Accruing	4,423	4,371
Financing Receivable, Recorded Investment, Nonaccrual Status	10	325
Loans and Leases Receivable, Gross, Carrying Amount	112,303	116,673	117,863
Consumer Installment and Revolving Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Pass	8,849	10,038
Financing Receivable, Recorded Investment, Special Mention	58	55
Financing Receivable Recorded Investment, Substandard Accruing	89	114
Financing Receivable, Recorded Investment, Nonaccrual Status	0	13
Loans and Leases Receivable, Gross, Carrying Amount	$ 8,996	$ 10,220	$ 14,362

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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