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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 | Sep. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Securities available for sale |  |
Securities available for sale | $ 363,413 | $ 286,389
Interest rate swaps on loans | Cash flow hedges |  |
Liabilities: |  |
Derivatives | 960 | 1,882
Recurring |  |
Securities available for sale |  |
Securities available for sale | 363,413 | 286,389
Loans held for sale | 116,789 | 214,266
Total assets measured at fair value | 488,083 | 513,422
Liabilities: |  |
Derivatives | 5,921 | 10,114
Recurring | Cash flow hedges |  |
Liabilities: |  |
Derivatives | 960 | 1,882
Recurring | IRLC |  |
Securities available for sale |  |
Derivatives | 2,875 | 4,582
Recurring | Interest rate swaps on loans |  |
Securities available for sale |  |
Derivatives | 4,961 | 8,185
Liabilities: |  |
Derivatives | 4,961 | 8,185
Recurring | Forward sales of TBA securities |  |
Securities available for sale |  |
Derivatives | 45 |
Liabilities: |  |
Derivatives |  | 47
Level 2 | Recurring |  |
Securities available for sale |  |
Securities available for sale | 363,413 | 286,389
Loans held for sale | 116,789 | 214,266
Total assets measured at fair value | 488,083 | 513,422
Liabilities: |  |
Derivatives | 5,921 | 10,114
Level 2 | Recurring | Cash flow hedges |  |
Liabilities: |  |
Derivatives | 960 | 1,882
Level 2 | Recurring | IRLC |  |
Securities available for sale |  |
Derivatives | 2,875 | 4,582
Level 2 | Recurring | Interest rate swaps on loans |  |
Securities available for sale |  |
Derivatives | 4,961 | 8,185
Liabilities: |  |
Derivatives | 4,961 | 8,185
Level 2 | Recurring | Forward sales of TBA securities |  |
Securities available for sale |  |
Derivatives | 45 |
Liabilities: |  |
Derivatives |  | 47
U.S. government agencies and corporations |  |
Securities available for sale |  |
Securities available for sale | 62,572 | 48,282
U.S. government agencies and corporations | Recurring |  |
Securities available for sale |  |
Securities available for sale | 62,572 | 48,282
U.S. government agencies and corporations | Level 2 | Recurring |  |
Securities available for sale |  |
Securities available for sale | 62,572 | 48,282
Mortgage-backed securities |  |
Securities available for sale |  |
Securities available for sale | 186,120 | 123,714
Mortgage-backed securities | Recurring |  |
Securities available for sale |  |
Securities available for sale | 186,120 | 123,714
Mortgage-backed securities | Level 2 | Recurring |  |
Securities available for sale |  |
Securities available for sale | 186,120 | 123,714
Obligations of states and political subdivisions |  |
Securities available for sale |  |
Securities available for sale | 96,305 | 102,805
Obligations of states and political subdivisions | Recurring |  |
Securities available for sale |  |
Securities available for sale | 96,305 | 102,805
Obligations of states and political subdivisions | Level 2 | Recurring |  |
Securities available for sale |  |
Securities available for sale | 96,305 | 102,805
Corporate and other debt securities |  |
Securities available for sale |  |
Securities available for sale | 18,416 | 11,588
Corporate and other debt securities | Recurring |  |
Securities available for sale |  |
Securities available for sale | 18,416 | 11,588
Corporate and other debt securities | Level 2 | Recurring |  |
Securities available for sale |  |
Securities available for sale | $ 18,416 | $ 11,588

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