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Securities (Restricted Investments) (Details) - USD ($)
$ in Thousands
Jun. 30, 2018
Dec. 31, 2017
Carrying Value Qualitative Disclosures Related To Election [Line Items]    
Restricted Investments $ 1,166 $ 1,107
Federal Reserve Bank Stock [Member]    
Carrying Value Qualitative Disclosures Related To Election [Line Items]    
Restricted Investments 344 344
Federal Home Loan Bank Stock [Member]    
Carrying Value Qualitative Disclosures Related To Election [Line Items]    
Restricted Investments 682 623
Community Bankers' Bank Stock [Member]    
Carrying Value Qualitative Disclosures Related To Election [Line Items]    
Restricted Investments $ 140 $ 140