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Fair Value (Qualitative information for assets and liabilities) (Details)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2017
USD ($)
Jun. 30, 2017
USD ($)
Servicing Assets [Member] | Cash Flow Valuation Technique [Member]    
Fair Value Inputs Assets Quantitative Information [Line Items]    
Fair Value assets and liabilities measured on reccurring basis $ 9,866 $ 9,866
Valuation Technique Cash flow valuation  
Servicing Assets [Member] | Cash Flow Valuation Technique [Member] | Minimum [Member]    
Fair Value Inputs Assets Quantitative Information [Line Items]    
Constant prepayment rate   4.18%
Discount rate   10.00%
Servicing Assets [Member] | Cash Flow Valuation Technique [Member] | Maximum [Member]    
Fair Value Inputs Assets Quantitative Information [Line Items]    
Constant prepayment rate   9.07%
Discount rate   12.00%
Collateral dependant impaired loan | Fair value of property or collateral [Member]    
Fair Value Inputs Assets Quantitative Information [Line Items]    
Fair Value assets and liabilities measured on reccurring basis $ 25,242 $ 25,242
Valuation Technique Fair value of property or collateral  
Collateral dependant impaired loan | Fair value of property or collateral [Member] | Minimum [Member]    
Fair Value Inputs Assets Quantitative Information [Line Items]    
Appraised value less disposition costs   22.20%
Collateral dependant impaired loan | Fair value of property or collateral [Member] | Maximum [Member]    
Fair Value Inputs Assets Quantitative Information [Line Items]    
Appraised value less disposition costs   36.20%
Other non-collateral dependant impaired loans [Member] | Cash Flow Valuation Technique [Member]    
Fair Value Inputs Assets Quantitative Information [Line Items]    
Fair Value assets and liabilities measured on reccurring basis $ 32,847 $ 32,847
Valuation Technique Cash flow valuation  
Other non-collateral dependant impaired loans [Member] | Cash Flow Valuation Technique [Member] | Minimum [Member]    
Fair Value Inputs Assets Quantitative Information [Line Items]    
Discount rate   4.15%
Other non-collateral dependant impaired loans [Member] | Cash Flow Valuation Technique [Member] | Maximum [Member]    
Fair Value Inputs Assets Quantitative Information [Line Items]    
Discount rate   10.50%
Foreclosed real estate [Member] | Fair value of property or collateral [Member]    
Fair Value Inputs Assets Quantitative Information [Line Items]    
Fair Value assets and liabilities measured on reccurring basis $ 50,223 $ 50,223
Valuation Technique Fair value of property or collateral  
Foreclosed real estate [Member] | Fair value of property or collateral [Member] | Minimum [Member]    
Fair Value Inputs Assets Quantitative Information [Line Items]    
Appraised value less disposition costs   22.20%
Foreclosed real estate [Member] | Fair value of property or collateral [Member] | Maximum [Member]    
Fair Value Inputs Assets Quantitative Information [Line Items]    
Appraised value less disposition costs   36.20%
Other repossessed assets [Member] | Fair value of property or collateral [Member]    
Fair Value Inputs Assets Quantitative Information [Line Items]    
Fair Value assets and liabilities measured on reccurring basis $ 3,225 $ 3,225
Valuation Technique Fair value of property or collateral  
Other repossessed assets [Member] | Fair value of property or collateral [Member] | Minimum [Member]    
Fair Value Inputs Assets Quantitative Information [Line Items]    
Appraised value less disposition costs   32.00%
Other repossessed assets [Member] | Fair value of property or collateral [Member] | Maximum [Member]    
Fair Value Inputs Assets Quantitative Information [Line Items]    
Appraised value less disposition costs   68.00%