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Allowance for Loan Losses (Nonaccrual and Past Due Loans By Class) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	$ 2,153	$ 5,894
Current	514,789	489,679
Total Loans	516,942	495,573	$ 469,820
90 or More Days Past Due Still Accruing	8	307
Nonaccrual Loans	6,991	5,285
Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	1,301	3,371
Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	540	481
Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	312	2,042
Commercial - Non Real Estate Commercial And Industrial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	118	1
Current	30,223	29,365
Total Loans	30,341	29,366
90 or More Days Past Due Still Accruing	0	0
Nonaccrual Loans	278	475
Commercial - Non Real Estate Commercial And Industrial [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	69	1
Commercial - Non Real Estate Commercial And Industrial [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	49	0
Commercial - Non Real Estate Commercial And Industrial [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Commercial Real Estate Owner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	534	765
Current	114,820	108,942
Total Loans	115,354	109,707
90 or More Days Past Due Still Accruing	0	0
Nonaccrual Loans	431	1,614
Commercial Real Estate Owner Occupied [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	150	623
Commercial Real Estate Owner Occupied [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	384	142
Commercial Real Estate Owner Occupied [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Commercial Real Estate Non-Owner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	189	801
Current	92,982	64,664
Total Loans	93,171	65,465
90 or More Days Past Due Still Accruing	0	0
Nonaccrual Loans	1,066	948
Commercial Real Estate Non-Owner Occupied [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Commercial Real Estate Non-Owner Occupied [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	54	55
Commercial Real Estate Non-Owner Occupied [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	135	746
Construction And Farmland Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	50	50
Current	4,627	8,509
Total Loans	4,677	8,559
90 or More Days Past Due Still Accruing	0	0
Construction And Farmland Residential [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	50	50
Construction And Farmland Residential [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Construction And Farmland Residential [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0
Construction And Farmland Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	499	428
Current	26,615	32,582
Total Loans	27,114	33,010
90 or More Days Past Due Still Accruing	0	0
Nonaccrual Loans	0	310
Construction And Farmland Commercial [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	499	356
Construction And Farmland Commercial [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	72
Construction And Farmland Commercial [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Consumer Installment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	36	46
Current	12,641	13,484
Total Loans	12,677	13,530
90 or More Days Past Due Still Accruing	8	0
Nonaccrual Loans	8	0
Consumer Installment [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	23	43
Consumer Installment [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	2	3
Consumer Installment [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	11	0
Residential Equity Lines [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	66	175
Current	31,240	34,246
Total Loans	31,306	34,421
90 or More Days Past Due Still Accruing	0	0
Nonaccrual Loans	132	276
Residential Equity Lines [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	66	175
Residential Equity Lines [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Residential Equity Lines [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Residential Single Family [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	661	3,628
Current	195,999	191,602
Total Loans	196,660	195,230
90 or More Days Past Due Still Accruing	0	307
Nonaccrual Loans	5,076	1,662
Residential Single Family [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	444	2,123
Residential Single Family [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	51	209
Residential Single Family [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	166	1,296
Residential Multifamily [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	3,566	3,975
Total Loans	3,566	3,975
90 or More Days Past Due Still Accruing	0	0
All Other Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	2,076	2,310
Total Loans	2,076	2,310	$ 2,316
90 or More Days Past Due Still Accruing	$ 0	$ 0

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 7
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=49124121&loc=d3e5111-111524

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- Definition

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+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 7A
-URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953401-111524

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 7
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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 7A
-URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953401-111524

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=28367877&loc=d3e4428-111522

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