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Loans And 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 $ 470,069 $ 435,128
Pass [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Financing receivables 449,528 413,311
Monitor [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Financing receivables 7,973 3,477
Special Mention [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Financing receivables 1,617 8,203
Substandard [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Financing receivables 10,036 10,137
Doubtful [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Financing receivables 915  
Commercial Mortgages-Owner Occupied [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Financing receivables 90,761 76,971
Commercial Mortgages-Owner Occupied [Member] | Pass [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Financing receivables 83,008 68,813
Commercial Mortgages-Owner Occupied [Member] | Monitor [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Financing receivables 2,975 1,353
Commercial Mortgages-Owner Occupied [Member] | Special Mention [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Financing receivables 101 2,801
Commercial Mortgages-Owner Occupied [Member] | Substandard [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Financing receivables 4,677 4,004
Commercial Mortgages-Owner Occupied [Member] | Doubtful [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Financing receivables  
Commercial Mortgages-Non-Owner Occupied [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Financing receivables 134,402 126,855
Commercial Mortgages-Non-Owner Occupied [Member] | Pass [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Financing receivables 129,794 120,462
Commercial Mortgages-Non-Owner Occupied [Member] | Monitor [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Financing receivables 3,525 1,558
Commercial Mortgages-Non-Owner Occupied [Member] | Special Mention [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Financing receivables 525 3,895
Commercial Mortgages-Non-Owner Occupied [Member] | Substandard [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Financing receivables 558 940
Commercial Mortgages-Non-Owner Occupied [Member] | Doubtful [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Financing receivables  
Commercial Construction [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Financing receivables 12,475 13,299
Commercial Construction [Member] | Pass [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Financing receivables 11,774 12,932
Commercial Construction [Member] | Special Mention [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Financing receivables 445  
Commercial Construction [Member] | Substandard [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Financing receivables 256 367
Commercial Construction [Member] | Doubtful [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Financing receivables  
Consumer Unsecured [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Financing receivables 8,567 6,861
Consumer Unsecured [Member] | Pass [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Financing receivables 8,567 6,830
Consumer Unsecured [Member] | Substandard [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Financing receivables   31
Consumer Unsecured [Member] | Doubtful [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Financing receivables  
Consumer Secured [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Financing receivables 76,532 74,670
Consumer Secured [Member] | Pass [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Financing receivables 76,215 73,825
Consumer Secured [Member] | Monitor [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Financing receivables   276
Consumer Secured [Member] | Special Mention [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Financing receivables   50
Consumer Secured [Member] | Substandard [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Financing receivables 317 519
Consumer Secured [Member] | Doubtful [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Financing receivables  
Residential Mortgages [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Financing receivables 51,288 50,013
Residential Mortgages [Member] | Pass [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Financing receivables 48,366 47,180
Residential Mortgages [Member] | Special Mention [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Financing receivables 245  
Residential Mortgages [Member] | Substandard [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Financing receivables 2,677 2,833
Residential Mortgages [Member] | Doubtful [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Financing receivables  
Residential Consumer Construction [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Financing receivables 7,959 9,686
Residential Consumer Construction [Member] | Pass [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Financing receivables 7,892 9,438
Residential Consumer Construction [Member] | Substandard [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Financing receivables 67 248
Residential Consumer Construction [Member] | Doubtful [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Financing receivables  
Commercial [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Financing receivables 88,085 76,773
Commercial [Member] | Pass [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Financing receivables 83,912 73,831
Commercial [Member] | Monitor [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Financing receivables 1,473 290
Commercial [Member] | Special Mention [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Financing receivables 301 1,457
Commercial [Member] | Substandard [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Financing receivables 1,484 $ 1,195
Commercial [Member] | Doubtful [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Financing receivables $ 915