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Fair Value (Narrative Disclosures) (Details)
 12 Months Ended
Dec. 31, 2015
USD ($)
foreclosed_property
Dec. 31, 2014
USD ($)
Dec. 31, 2013
USD ($)
Fair Value Inputs, Assets, Quantitative Information      
Fair Value, Assets, Level 1 to Level 2 Transfers, Amount1 $ 0 $ 0  
Fair Value, Assets, Level 2 to Level 1 Transfers, Amount1 0 0  
Fair value, assets, transfers into level 3 0 0  
Fair value, assets, transfers out of level 3 0 0  
Fair Value, Liabilities, Level 1 to Level 2 Transfers, Amount1 0 0  
Fair Value, Liabilities, Level 2 to Level 1 Transfers, Amount1 0 0  
Fair value, liabilities, transfers into level 3 0 0  
Fair value, liabilities, transfers out of level 3 0 0  
Servicing Asset at Fair Value, Amount 1,563,000 943,000 $ 0
Net losses due to impairment valuation 36,000 4,000  
Commercial paper 9,100,000 10,400,000  
Certificates of deposit, at carrying value 4,500,000 6,900,000  
FHLB stock par value equals carrying value $ 100.00    
Minimum      
Fair Value Inputs, Assets, Quantitative Information      
Quantification of unobservable inputs for level 3 values for impaired loans 10.00%    
Maximum      
Fair Value Inputs, Assets, Quantitative Information      
Quantification of unobservable inputs for level 3 values for impaired loans 100.00%    
Weighted average      
Fair Value Inputs, Assets, Quantitative Information      
Quantification of unobservable inputs for level 3 values for impaired loans 66.00%    
Impaired loans      
Fair Value Inputs, Assets, Quantitative Information      
Assets measured on a non-recurring basis, fair value $ 17,800,000 8,600,000  
Foreclosed properties      
Fair Value Inputs, Assets, Quantitative Information      
Assets measured on a non-recurring basis, fair value 1,677,000 1,693,000  
Fair Value Measurements - Level 3 Inputs | Impaired loans      
Fair Value Inputs, Assets, Quantitative Information      
Assets measured on a non-recurring basis, fair value 6,245,000 1,540,000  
Fair Value Measurements - Level 3 Inputs | Foreclosed properties      
Fair Value Inputs, Assets, Quantitative Information      
Assets measured on a non-recurring basis, fair value $ 0 $ 0  
Assets, fair value disclosure, nonrecurring, number of assets | foreclosed_property 0