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Allowance for Loan Losses (Credit Quality Information By Class) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Financing Receivable, Recorded Investment [Line Items]
Financing receivables	$ 504,265	$ 482,043
Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivables	429,610	394,218
Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivables	60,588	70,695
Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivables	3,865	7,201
Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivables	9,506	8,268
Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivables	696	1,661
Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivables	0	0
Performing [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivables	12,641	13,484
Nonperforming [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivables	36	46
Commercial - Non Real Estate Commercial And Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivables	30,341	29,366
Commercial - Non Real Estate Commercial And Industrial [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivables	25,951	25,375
Commercial - Non Real Estate Commercial And Industrial [Member] | Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivables	3,858	3,175
Commercial - Non Real Estate Commercial And Industrial [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivables	170	335
Commercial - Non Real Estate Commercial And Industrial [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivables	362	364
Commercial - Non Real Estate Commercial And Industrial [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivables	0	117
Commercial - Non Real Estate Commercial And Industrial [Member] | Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivables	0	0
Commercial Real Estate Owner Occupied [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivables	115,354	109,707
Commercial Real Estate Owner Occupied [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivables	99,365	90,230
Commercial Real Estate Owner Occupied [Member] | Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivables	13,050	12,553
Commercial Real Estate Owner Occupied [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivables	1,766	4,521
Commercial Real Estate Owner Occupied [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivables	742	1,416
Commercial Real Estate Owner Occupied [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivables	431	987
Commercial Real Estate Owner Occupied [Member] | Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivables	0	0
Commercial Real Estate Non-Owner Occupied [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivables	93,171	65,465
Commercial Real Estate Non-Owner Occupied [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivables	60,259	42,988
Commercial Real Estate Non-Owner Occupied [Member] | Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivables	30,515	21,072
Commercial Real Estate Non-Owner Occupied [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivables	891	0
Commercial Real Estate Non-Owner Occupied [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivables	1,506	1,405
Commercial Real Estate Non-Owner Occupied [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivables	0	0
Commercial Real Estate Non-Owner Occupied [Member] | Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivables	0	0
Construction And Farmland Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivables	4,677	8,559
Construction And Farmland Residential [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivables	4,627	8,559
Construction And Farmland Residential [Member] | Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivables	50	0
Construction And Farmland Residential [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivables		0
Construction And Farmland Residential [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivables		0
Construction And Farmland Residential [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivables		0
Construction And Farmland Residential [Member] | Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivables	0	0
Construction And Farmland Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivables	27,114	33,010
Construction And Farmland Commercial [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivables	21,105	20,391
Construction And Farmland Commercial [Member] | Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivables	5,349	10,886
Construction And Farmland Commercial [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivables	314	1,395
Construction And Farmland Commercial [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivables	346	338
Construction And Farmland Commercial [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivables	0	0
Construction And Farmland Commercial [Member] | Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivables	0	0
Residential Equity Lines [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivables	31,306	34,421
Residential Equity Lines [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivables	30,791	30,267
Residential Equity Lines [Member] | Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivables	382	3,878
Residential Equity Lines [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivables	0	0
Residential Equity Lines [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivables	17	145
Residential Equity Lines [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivables	116	131
Residential Equity Lines [Member] | Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivables	0	0
Residential Single Family [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivables	196,660	195,230
Residential Single Family [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivables	182,404	170,168
Residential Single Family [Member] | Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivables	6,850	19,086
Residential Single Family [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivables	724	950
Residential Single Family [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivables	6,533	4,600
Residential Single Family [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivables	149	426
Residential Single Family [Member] | Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivables	0	0
Residential Multifamily [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivables	3,566	3,975
Residential Multifamily [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivables	3,032	3,975
Residential Multifamily [Member] | Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivables	534	0
Residential Multifamily [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivables		0
Residential Multifamily [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivables		0
Residential Multifamily [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivables		0
Residential Multifamily [Member] | Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivables	0	0
All Other Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivables	2,076	2,310
All Other Loans [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivables	2,076	2,265
All Other Loans [Member] | Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivables		45
All Other Loans [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivables		0
All Other Loans [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivables		0
All Other Loans [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivables		0
All Other Loans [Member] | Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivables	$ 0	$ 0

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