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Securities (Narrative) (Details)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2018
USD ($)
security
Sep. 30, 2017
USD ($)
Sep. 30, 2018
USD ($)
security
Sep. 30, 2017
USD ($)
Debt Securities, Available-for-sale [Line Items]        
Proceeds from Sale of Debt Securities, Available-for-sale | $ $ 0 $ 0 $ 32,330 $ 0
U.S. Government Agency and Government-Sponsored Enterprise Mortgage-Backed Securities and Collateralized Mortgage Obligations [Member]        
Debt Securities, Available-for-sale [Line Items]        
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions 481   481  
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year 153   153  
Municipal Bonds [Member]        
Debt Securities, Available-for-sale [Line Items]        
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions 458   458  
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year 92   92  
U.S. Government and Government-Sponsored Enterprise Securities [Member]        
Debt Securities, Available-for-sale [Line Items]        
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions 54   54  
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year 14   14  
US Government Securities [Member]        
Debt Securities, Available-for-sale [Line Items]        
Number Of Securities In Continuous Loss Position For Twelve Months or More 1   1  
Number Of Securities In Unrealized Loss Position 1   1