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Allowance For Credit Losses (Narrative) (Details)
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2016
USD ($)
Sep. 30, 2015
USD ($)
Sep. 30, 2016
USD ($)
loan
Sep. 30, 2015
USD ($)
loan
Dec. 31, 2015
USD ($)
loan
Financing Receivable, Modifications [Line Items]          
Interest income that would have been recorded under original terms, non-accrual loans $ 150,000 $ 102,000 $ 370,000 $ 380,000  
Partial charge-off of loan amount 47,000 494,000 $ 277,000 $ 1,012,000  
Consumer: Home Equity [Member]          
Financing Receivable, Modifications [Line Items]          
Number of TDR loans | loan     1 1 1
TDR amount 102,000 102,000 $ 102,000 $ 102,000 $ 102,000
Pre-modification recorded investment     102,000    
Post-modification recorded investment     $ 102,000    
Number of subsequent defaults | loan     0 0  
Monthly payment reduced period, in months     36 months    
Reduction of principal     $ 0    
Consumer Installment Loan [Member]          
Financing Receivable, Modifications [Line Items]          
Number of TDR loans | loan     1   1
TDR amount $ 40,000 $ 0 $ 40,000 $ 0 $ 40,000
Pre-modification recorded investment     42,000    
Post-modification recorded investment     42,000    
Partial charge-off of loan amount     $ 2,000    
Number of subsequent defaults | loan     0 0  
Reduction of principal     $ 0