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Securities - Other Investments (Details) - USD ($)
$ in Thousands
Jun. 30, 2019
Dec. 31, 2018
Debt and Equity Securities, FV-NI [Line Items]    
Other investments $ 12,905 $ 11,499
Federal Reserve Bank Stock [Member]    
Debt and Equity Securities, FV-NI [Line Items]    
Other investments 7,909 7,010
Federal Home Loan Bank Stock [Member]    
Debt and Equity Securities, FV-NI [Line Items]    
Other investments 4,646 4,139
First National Bankers Bank Stock [Member]    
Debt and Equity Securities, FV-NI [Line Items]    
Other investments $ 350 $ 350