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Fair Value of Assets and Liabilities (Narrative) (Details)
$ in Thousands
6 Months Ended 12 Months Ended
Jun. 30, 2019
USD ($)
loan
Dec. 31, 2018
USD ($)
loan
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Number of impaired loans not requiring a valuation allowance | loan   6
Impaired Loans, Cumulative Charge-Offs | $ $ 587 $ 428
Number of impaired loans requiring a valuation allowance | loan 5  
Impaired Loans [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair Value | $ $ 752 $ 1,319