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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

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