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Loans And Allowance For Loan Losses (Allowance For Loan Losses And Recorded Investment In Loans) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Financing Receivable, Allowance for Credit Losses [Line Items]    
Allowance for Credit Losses: Beginning Balance $ 4,683 $ 4,790
Allowance for Credit Losses: Charge-offs (759) (615)
Allowance for Credit Losses: Recoveries 180 226
Allowance for credit losses: Provision 1,612 282
Allowance for Credit Losses: Ending Balance 5,716 4,683
Allowance for Credit Losses: Ending Balance: Individually evaluated for impairment 1,771 1,294
Allowance for Credit Losses: Ending Balance: Collectively evaluated for impairment 3,945 3,389
Allowance for Credit Losses: Totals 5,716 4,683
Financing Receivables: Ending Balance: Individually evaluated for impairment 9,799 9,414
Financing Receivables: Ending Balance: Collectively evaluated for impairment 460,270 425,714
Total loans [1] 470,069 435,128
Commercial [Member]    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Allowance for Credit Losses: Beginning Balance 1,195 1,235
Allowance for Credit Losses: Charge-offs (328) (294)
Allowance for Credit Losses: Recoveries 7 14
Allowance for credit losses: Provision 1,318 240
Allowance for Credit Losses: Ending Balance 2,192 1,195
Allowance for Credit Losses: Ending Balance: Individually evaluated for impairment 1,233 610
Allowance for Credit Losses: Ending Balance: Collectively evaluated for impairment 959 585
Allowance for Credit Losses: Totals 2,192 1,195
Financing Receivables: Ending Balance: Individually evaluated for impairment 2,219 1,180
Financing Receivables: Ending Balance: Collectively evaluated for impairment 85,866 75,593
Total loans 88,085 76,773
Commercial Real Estate [Member]    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Allowance for Credit Losses: Beginning Balance 1,751 2,194
Allowance for Credit Losses: Charge-offs (156) (64)
Allowance for Credit Losses: Recoveries 127 122
Allowance for credit losses: Provision 387 (501)
Allowance for Credit Losses: Ending Balance 2,109 1,751
Allowance for Credit Losses: Ending Balance: Individually evaluated for impairment 345 413
Allowance for Credit Losses: Ending Balance: Collectively evaluated for impairment 1,764 1,338
Allowance for Credit Losses: Totals 2,109 1,751
Financing Receivables: Ending Balance: Individually evaluated for impairment 5,198 5,175
Financing Receivables: Ending Balance: Collectively evaluated for impairment 232,440 211,950
Total loans 237,638 217,125
Consumer [Member]    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Allowance for Credit Losses: Beginning Balance 1,073 812
Allowance for Credit Losses: Charge-offs (275) (257)
Allowance for Credit Losses: Recoveries 44 54
Allowance for credit losses: Provision 112 464
Allowance for Credit Losses: Ending Balance 954 1,073
Allowance for Credit Losses: Ending Balance: Individually evaluated for impairment 110 184
Allowance for Credit Losses: Ending Balance: Collectively evaluated for impairment 844 889
Allowance for Credit Losses: Totals 954 1,073
Financing Receivables: Ending Balance: Individually evaluated for impairment 128 241
Financing Receivables: Ending Balance: Collectively evaluated for impairment 84,971 81,290
Total loans 85,099 81,531
Residential Real Estate [Member]    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Allowance for Credit Losses: Beginning Balance 664 549
Allowance for Credit Losses: Recoveries 2 36
Allowance for credit losses: Provision (205) 79
Allowance for Credit Losses: Ending Balance 461 664
Allowance for Credit Losses: Ending Balance: Individually evaluated for impairment 83 87
Allowance for Credit Losses: Ending Balance: Collectively evaluated for impairment 378 577
Allowance for Credit Losses: Totals 461 664
Financing Receivables: Ending Balance: Individually evaluated for impairment 2,254 2,818
Financing Receivables: Ending Balance: Collectively evaluated for impairment 56,993 56,881
Total loans $ 59,247 $ 59,699
[1] Includes net deferred loan costs of $182 and $263, respectively.