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Fair Value of Assets and Liabilities - Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Securities available for sale |  |
Securities available for sale | $ 286,389 | $ 189,733
Interest rate swaps on loans | Cash flow hedges |  |
Liabilities: |  |
Derivatives | 1,882 | 145
Recurring |  |
Securities available for sale |  |
Securities available for sale | 286,389 | 189,733
Loans held for sale | 214,266 | 90,500
Total assets measured at fair value | 513,422 | 283,778
Liabilities: |  |
Derivatives | 10,114 | 2,632
Recurring | Cash flow hedges |  |
Liabilities: |  |
Derivatives | 1,882 | 145
Recurring | IRLC |  |
Securities available for sale |  |
Derivatives | 4,582 | 1,083
Recurring | Interest rate swaps on loans |  |
Securities available for sale |  |
Derivatives | 8,185 | 2,462
Liabilities: |  |
Derivatives | 8,185 | 2,462
Recurring | Forward sales of TBA securities |  |
Liabilities: |  |
Derivatives | 47 | 25
Level 2 | Recurring |  |
Securities available for sale |  |
Securities available for sale | 286,389 | 189,733
Loans held for sale | 214,266 | 90,500
Total assets measured at fair value | 513,422 | 283,778
Liabilities: |  |
Derivatives | 10,114 | 2,632
Level 2 | Recurring | Cash flow hedges |  |
Liabilities: |  |
Derivatives | 1,882 | 145
Level 2 | Recurring | IRLC |  |
Securities available for sale |  |
Derivatives | 4,582 | 1,083
Level 2 | Recurring | Interest rate swaps on loans |  |
Securities available for sale |  |
Derivatives | 8,185 | 2,462
Liabilities: |  |
Derivatives | 8,185 | 2,462
Level 2 | Recurring | Forward sales of TBA securities |  |
Liabilities: |  |
Derivatives | 47 | 25
U.S. government agencies and corporations |  |
Securities available for sale |  |
Securities available for sale | 48,282 | 21,440
U.S. government agencies and corporations | Recurring |  |
Securities available for sale |  |
Securities available for sale | 48,282 | 21,440
U.S. government agencies and corporations | Level 2 | Recurring |  |
Securities available for sale |  |
Securities available for sale | 48,282 | 21,440
Mortgage-backed securities |  |
Securities available for sale |  |
Securities available for sale | 123,714 | 86,585
Mortgage-backed securities | Recurring |  |
Securities available for sale |  |
Securities available for sale | 123,714 | 86,585
Mortgage-backed securities | Level 2 | Recurring |  |
Securities available for sale |  |
Securities available for sale | 123,714 | 86,585
Obligations of states and political subdivisions |  |
Securities available for sale |  |
Securities available for sale | 102,805 | 81,708
Obligations of states and political subdivisions | Recurring |  |
Securities available for sale |  |
Securities available for sale | 102,805 | 81,708
Obligations of states and political subdivisions | Level 2 | Recurring |  |
Securities available for sale |  |
Securities available for sale | 102,805 | $ 81,708
Corporate and other debt securities |  |
Securities available for sale |  |
Securities available for sale | 11,588 |
Corporate and other debt securities | Recurring |  |
Securities available for sale |  |
Securities available for sale | 11,588 |
Corporate and other debt securities | Level 2 | Recurring |  |
Securities available for sale |  |
Securities available for sale | $ 11,588 |

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