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Goodwill, Core Deposit Intangible and Other Intangible Assets (Tables) | 9 Months Ended
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Sep. 30, 2021
Goodwill And Intangible Assets Disclosure [Abstract] |
Summary of Changes in Goodwill, Core Deposit Intangible Assets and Customer Relationship Intangible Assets | The following tables summarize the changes in the Company’s goodwill, core deposit intangible assets, and customer relationship intangible assets for the three and nine months ended September 30, 2021 and 2020:
|  | For the Three Months Ended September 30, |
|  | 2021 |  |  | 2020 |
|  | Goodwill |  |  | Core Deposit Intangible |  |  | Customer Relationship Intangible |  |  | Goodwill |  |  | Core Deposit Intangible |  |  | Customer Relationship Intangible |
Beginning balance |  | $ | 148,353 |  |  | $ | 18,346 |  |  | $ | 2,335 |  |  | $ | 148,353 |  |  | $ | 25,459 |  |  | $ | 2,658 |
Amortization |  |  | — |  |  |  | (1,672 | ) |  |  | (66 | ) |  |  | — |  |  |  | (1,825 | ) |  |  | (122 | )
Ending balance |  | $ | 148,353 |  |  | $ | 16,674 |  |  | $ | 2,269 |  |  | $ | 148,353 |  |  | $ | 23,634 |  |  | $ | 2,536 |
Accumulated amortization |  | N/A |  |  | $ | 38,792 |  |  | $ | 947 |  |  | N/A |  |  | $ | 31,832 |  |  | $ | 680 |
Weighted average remaining amortization period |  | N/A |  |  | 5.0 Years |  |  | 8.5 Years |  |  | N/A |  |  | 5.8 Years |  |  | 9.7 Years |
|  | Nine Months Ended September 30, |
|  | 2021 |  |  | 2020 |
|  | Goodwill |  |  | Core Deposit Intangible |  |  | Customer Relationship Intangible |  |  | Goodwill |  |  | Core Deposit Intangible |  |  | Customer Relationship Intangible |
Beginning balance |  | $ | 148,353 |  |  | $ | 21,809 |  |  | $ | 2,469 |  |  | $ | 148,353 |  |  | $ | 29,111 |  |  | $ | 2,791 |
Amortization |  |  | — |  |  |  | (5,135 | ) |  |  | (200 | ) |  |  | — |  |  |  | (5,477 | ) |  |  | (255 | )
Ending balance |  | $ | 148,353 |  |  | $ | 16,674 |  |  | $ | 2,269 |  |  | $ | 148,353 |  |  | $ | 23,634 |  |  | $ | 2,536 |
Accumulated amortization |  | N/A |  |  | $ | 38,792 |  |  | $ | 947 |  |  | N/A |  |  | $ | 31,832 |  |  | $ | 680 |
Weighted average remaining amortization period |  | N/A |  |  | 5.0 Years |  |  | 8.5 Years |  |  | N/A |  |  | 5.8 Years |  |  | 9.7 Years |
Estimated Amortization Expense for Core Deposit Intangible and Customer Relationship Intangible Recognized | The following table presents the estimated amortization expense for core deposit intangible and customer relationship intangible assets remaining at September 30, 2021:
|  | Estimated Amortization |
2021 |  | $ | 1,737 |
2022 |  |  | 6,386 |
2023 |  |  | 4,336 |
2024 |  |  | 2,286 |
2025 |  |  | 1,721 |
Thereafter |  |  | 2,477 |
Total |  | $ | 18,943 |

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