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Disclosures About Fair Value of Financial Instruments - Fair Value, Assets Measured on Recurring Basis (Details) - USD ($) | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Agency mortgage-backed securities. |  |
Recurring Assets, Fair Value Disclosure | $ 229,441,000 | $ 169,940,000
Agency collateralized mortgage obligations |  |
Recurring Assets, Fair Value Disclosure | 204,277,000 | 176,621,000
States and political subdivisions securities |  |
Recurring Assets, Fair Value Disclosure | 40,015,000 | 47,325,000
Small Business Administration securities |  |
Recurring Assets, Fair Value Disclosure | 27,299,000 | 21,047,000
Interest rate derivative asset |  |
Recurring Assets, Fair Value Disclosure | 2,816,000 | 5,062,000
Interest rate derivative liability |  |
Recurring Assets, Fair Value Disclosure | (2,895,000) | (5,454,000)
Fair Value, Inputs, Level 1 |  |
Securities at fair value | 0 |
Fair Value, Inputs, Level 2 | Agency mortgage-backed securities. |  |
Recurring Assets, Fair Value Disclosure | 229,441,000 | 169,940,000
Fair Value, Inputs, Level 2 | Agency collateralized mortgage obligations |  |
Recurring Assets, Fair Value Disclosure | 204,277,000 | 176,621,000
Fair Value, Inputs, Level 2 | States and political subdivisions securities |  |
Recurring Assets, Fair Value Disclosure | 40,015,000 | 47,325,000
Fair Value, Inputs, Level 2 | Small Business Administration securities |  |
Recurring Assets, Fair Value Disclosure | 27,299,000 | 21,047,000
Fair Value, Inputs, Level 2 | Interest rate derivative asset |  |
Recurring Assets, Fair Value Disclosure | 2,816,000 | 5,062,000
Fair Value, Inputs, Level 2 | Interest rate derivative liability |  |
Recurring Assets, Fair Value Disclosure | (2,895,000) | $ (5,454,000)
Fair Value, Inputs, Level 3 |  |
Securities at fair value | $ 0 |

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