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Loans - Summary of Individually Impaired Loans Presented by Class of Loans (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Financing Receivable Impaired [Line Items] |  |  |
Unpaid Principal Balance | $ 13,234 | $ 3,281 | $ 2,575
Recorded Investment | 13,218 | 3,982 | 2,575
Average Balance | 14,797 | 3,979 | 2,566
Interest Income | 128 | 177 | 328
Construction and Land Development |  |  |
Financing Receivable Impaired [Line Items] |  |  |
Unpaid Principal Balance, With no related allowance recorded | 264 | 276 | 289
Recorded Investment, With no related allowance recorded | 264 | 276 | 289
Average Balance, With no related allowance recorded | 271 | 283 | 296
Interest Income, With no related allowance recorded | 24 | 23 | 16
Commercial Real Estate |  |  |
Financing Receivable Impaired [Line Items] |  |  |
Unpaid Principal Balance, With no related allowance recorded | 2,198 | 2,033 | 2,131
Recorded Investment, With no related allowance recorded | 2,197 | 2,033 | 2,131
Average Balance, With no related allowance recorded | 2,384 | 2,126 | 2,192
Interest Income, With no related allowance recorded | 100 | 134 | 297
Residential mortgage loans |  |  |
Financing Receivable Impaired [Line Items] |  |  |
Unpaid Principal Balance, With no related allowance recorded | 1,349 |  |
Recorded Investment, With no related allowance recorded | 1,334 |  |
Average Balance, With no related allowance recorded | 1,351 |  |
Commercial | SBA |  |  |
Financing Receivable Impaired [Line Items] |  |  |
Unpaid Principal Balance, With no related allowance recorded | 9,423 | 797 | 155
Recorded Investment, With no related allowance recorded | 9,423 | 1,498 | 155
Average Balance, With no related allowance recorded | 10,791 | 1,377 | 78
Interest Income, With no related allowance recorded | 4 | 19 | $ 15
Unpaid Principal Balance, With related allowance recorded | 0 | 175 |
Recorded Investment, With related allowance recorded | 0 | 175 |
Average Balance, With related allowance recorded | 0 | 193 |
Interest Income, With related allowance recorded | 0 | 1 |
Related Allowance, With related allowance recorded | $ 0 | $ 44 |

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