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Concentration of Risk and Off-Balance Sheet Risk (Narrative) (Details) - USD ($)
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Concentration Risk [Line Items]    
Commitments to extend credit $ 157,338,000 $ 125,279,000
Concentration risk, benchmark description 10% or more of the Bank's total net loans outstanding  
Mortgage loans commited amount to fund and sell $ 10,000,000  
Mortgage loans commited amount to fund and sell, remaining 5,805,000  
Standby Letters of Credit [Member]    
Concentration Risk [Line Items]    
Commitments to extend credit $ 15,805,000 9,837,000
Benchmark - Loans Receivable, Net [Member]    
Concentration Risk [Line Items]    
Concentration risk, percentage 48.10%  
Residential Mortgage [Member] | Residential Portfolio [Member]    
Concentration Risk [Line Items]    
Mortgage loans commited amount to fund and sell   15,000,000
Mortgage loans commited amount to fund and sell, remaining   $ 7,558,000