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Other Intangibles (Tables) | 9 Months Ended
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Sep. 30, 2021
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of core deposit intangibles | The carrying basis and accumulated amortization of recognized core deposit intangibles and other intangibles are noted below.
| September 30, 2021 |  | December 31, 2020
Gross carrying amount | $ | 102,396 |  |  | $ | 102,396 |
Other intangibles acquired | 2,247 |  |  | — |
Accumulated amortization | (77,705) |  |  | (73,421) |
Total core deposit and other intangibles | $ | 26,938 |  |  | $ | 28,975 |
Schedule of estimated future amortization expense | Estimated future amortization expense is summarized as follows:
| Amortization Expense
2021 | $ | 1,463 |
2022 | 5,402 |
2023 | 5,145 |
2024 | 4,510 |
2025 | 3,754 |
After 2025 | 6,664 |
| $ | 26,938 |

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