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Core Deposit Intangibles (Tables) | 9 Months Ended
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Sep. 30, 2020
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of core deposit | The carrying basis and accumulated amortization of recognized core deposit intangibles are noted below.
| September 30, 2020 |  | December 31, 2019
Gross carrying amount | $ | 102,396 |  |  | $ | 85,869 |
Core deposit intangibles acquired | — |  |  | 16,527 |
Accumulated amortization | (71,945) |  |  | (67,434) |
Total core deposit intangibles | $ | 30,451 |  |  | $ | 34,962 |
Schedule of estimated future amortization expense | Estimated future amortization expense is summarized as follows:
| Amortization Expense
2020 | $ | 1,476 |
2021 | 5,429 |
2022 | 5,027 |
2023 | 4,827 |
2024 | 4,241 |
After 2024 | 9,451 |
| $ | 30,451 |

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