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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, 2017
Dec. 31, 2016
Financing Receivable, Allowance for Credit Losses [Line Items]    
Allowance for Credit Losses: Beginning Balance $ 5,716 $ 4,683
Allowance for Credit Losses: Charge-offs (2,094) (759)
Allowance for Credit Losses: Recoveries 137 180
Allowance for credit losses: Provision 993 1,612
Allowance for Credit Losses: Ending Balance 4,752 5,716
Allowance for Credit Losses: Ending Balance: Individually evaluated for impairment 563 1,771
Allowance for Credit Losses: Ending Balance: Collectively evaluated for impairment 4,189 3,945
Allowance for Credit Losses: Totals 4,752 5,716
Financing Receivables: Ending Balance: Individually evaluated for impairment 7,690 9,799
Financing Receivables: Ending Balance: Collectively evaluated for impairment 488,084 460,270
Total loans [1] 495,774 470,069
Commercial [Member]    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Allowance for Credit Losses: Beginning Balance 2,192 1,195
Allowance for Credit Losses: Charge-offs (1,652) (328)
Allowance for Credit Losses: Recoveries 6 7
Allowance for credit losses: Provision 718 1,318
Allowance for Credit Losses: Ending Balance 1,264 2,192
Allowance for Credit Losses: Ending Balance: Individually evaluated for impairment 112 1,233
Allowance for Credit Losses: Ending Balance: Collectively evaluated for impairment 1,152 959
Allowance for Credit Losses: Totals 1,264 2,192
Financing Receivables: Ending Balance: Individually evaluated for impairment 1,242 2,219
Financing Receivables: Ending Balance: Collectively evaluated for impairment 94,885 85,866
Total loans 96,127 88,085
Commercial Real Estate [Member]    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Allowance for Credit Losses: Beginning Balance 2,109 1,751
Allowance for Credit Losses: Charge-offs (91) (156)
Allowance for Credit Losses: Recoveries 41 127
Allowance for credit losses: Provision (321) 387
Allowance for Credit Losses: Ending Balance 1,738 2,109
Allowance for Credit Losses: Ending Balance: Individually evaluated for impairment 190 345
Allowance for Credit Losses: Ending Balance: Collectively evaluated for impairment 1,548 1,764
Allowance for Credit Losses: Totals 1,738 2,109
Financing Receivables: Ending Balance: Individually evaluated for impairment 4,009 5,198
Financing Receivables: Ending Balance: Collectively evaluated for impairment 247,798 232,440
Total loans 251,807 237,638
Consumer [Member]    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Allowance for Credit Losses: Beginning Balance 954 1,073
Allowance for Credit Losses: Charge-offs (246) (275)
Allowance for Credit Losses: Recoveries 51 44
Allowance for credit losses: Provision 413 112
Allowance for Credit Losses: Ending Balance 1,172 954
Allowance for Credit Losses: Ending Balance: Individually evaluated for impairment 257 110
Allowance for Credit Losses: Ending Balance: Collectively evaluated for impairment 915 844
Allowance for Credit Losses: Totals 1,172 954
Financing Receivables: Ending Balance: Individually evaluated for impairment 708 128
Financing Receivables: Ending Balance: Collectively evaluated for impairment 83,038 84,971
Total loans 83,746 85,099
Residential Real Estate [Member]    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Allowance for Credit Losses: Beginning Balance 461 664
Allowance for Credit Losses: Charge-offs (105)  
Allowance for Credit Losses: Recoveries 39 2
Allowance for credit losses: Provision 183 (205)
Allowance for Credit Losses: Ending Balance 578 461
Allowance for Credit Losses: Ending Balance: Individually evaluated for impairment 4 83
Allowance for Credit Losses: Ending Balance: Collectively evaluated for impairment 574 378
Allowance for Credit Losses: Totals 578 461
Financing Receivables: Ending Balance: Individually evaluated for impairment 1,731 2,254
Financing Receivables: Ending Balance: Collectively evaluated for impairment 62,363 56,993
Total loans $ 64,094 $ 59,247
[1] Includes net deferred costs and premiums of $940 and $182, respectively.