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Securities (Other Investments) (Details) - USD ($) $ in Thousands | Sep. 30, 2021 | Dec. 31, 2020
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Debt Securities, Available-for-sale [Line Items] |  |
Other investments | $ 14,972 | $ 14,794
Federal Reserve Bank Stock [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Other investments | 8,171 | 8,606
Investment in Federal Home Loan Bank Stock [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Other investments | 6,451 | 5,838
First National Bankers Bank Stock [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Other investments | $ 350 | $ 350

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