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Securities - Other Investments (Details) - USD ($) $ in Thousands | Jun. 30, 2020 | Dec. 31, 2019
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Debt and Equity Securities, FV-NI [Line Items] |  |
Other investments | $ 14,829 | $ 12,913
Federal Reserve Bank Stock [Member] |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Other investments | 8,641 | 7,917
Federal Home Loan Bank Stock [Member] |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Other investments | 5,838 | 4,646
First National Bankers Bank Stock [Member] |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Other investments | $ 350 | $ 350

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