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Goodwill and Other Intangible Assets (Tables) | 12 Months Ended
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Dec. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Goodwill | Goodwill. Year-end goodwill was as follows:
| 2020 |  | 2019
Goodwill | $ | 654,952 |  |  | $ | 654,952 |
Schedule of Other Intangible Assets | Other Intangible Assets. Year-end other intangible assets were as follows:
| Gross Intangible Assets |  | Accumulated Amortization |  | Net Intangible Assets
2020 |  |  |  |  |
Core deposits | $ | 9,300 |  |  | $ | (8,004) |  |  | $ | 1,296 |
Customer relationships | 2,886 |  |  | (2,619) |  |  | 267 |
| $ | 12,186 |  |  | $ | (10,623) |  |  | $ | 1,563 |
2019 |  |  |  |  |
Core deposits | $ | 9,300 |  |  | $ | (7,257) |  |  | $ | 2,043 |
Customer relationships | 3,388 |  |  | (2,950) |  |  | 438 |
| $ | 12,688 |  |  | $ | (10,207) |  |  | $ | 2,481 |
Estimated Aggregate Future Amortization Expense for Intangible Assets | The estimated aggregate future amortization expense for intangible assets remaining as of December 31, 2020 is as follows:
2021 | $ | 697 |
2022 | 481 |
2023 | 282 |
2024 | 87 |
2025 | 11 |
Thereafter | 5 |
| $ | 1,563 |

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