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Securities - Narrative (Details) $ in Thousands | Sep. 30, 2020 USD ($) Security | Dec. 31, 2019 USD ($)
--- | --- | ---
Debt Securities, Available-for-sale [Line Items] |  |
Carrying value of securities pledged as collateral as required by law on public and trust deposits, repurchase agreements, and for other purposes | $ | $ 283,258 | $ 162,946
U.S. Government and agencies |  |
Debt Securities, Available-for-sale [Line Items] |  |
Available for sale securities in unrealized loss positions | 10 |
Available for sale securities in unrealized loss positions, percentage of amortized cost (individually did not exceed) | 1.00% |
Mortgage-backed securities, residential |  |
Debt Securities, Available-for-sale [Line Items] |  |
Available for sale securities in unrealized loss positions | 10 |
Available for sale securities in unrealized loss positions, percentage of amortized cost (individually did not exceed) | 3.00% |
State and municipal |  |
Debt Securities, Available-for-sale [Line Items] |  |
Available for sale securities in unrealized loss positions | 16 |
Available for sale securities in unrealized loss positions, percentage of amortized cost (individually did not exceed) | 3.00% |
Corporate bonds |  |
Debt Securities, Available-for-sale [Line Items] |  |
Available for sale securities in unrealized loss positions | 2 |
Available for sale securities in unrealized loss positions, percentage of amortized cost (individually did not exceed) | 1.00% |

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