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Goodwill and Other Intangible Assets (Tables) | 9 Months Ended
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Sep. 30, 2023
Goodwill and Intangible Assets Disclosure [Abstract] |
Summary of Goodwill | The following table details changes in the recorded amount of goodwill:
(Dollars in thousands) | September 30, 2023 | December 31, 2022
Goodwill, beginning of year | $ | 292,397 |  | $ | 264,193 |
Goodwill recorded from acquisitions | 62,709 |  | 28,204 |
Goodwill, end of period | $ | 355,106 |  | $ | 292,397 |
Summary of Finite Lived Intangible Assets | Other intangible assets were comprised of the following at September 30, 2023, and at December 31, 2022:
(Dollars in thousands) | Core Deposits |  | Customer Relationships |  | Indefinite-Lived Trade Names |  | Total
September 30, 2023 |  |  |  |  |  |  |
Gross intangibles | $ | 26,464 |  |  | $ | 39,241 |  |  | $ | 2,491 |  |  | $ | 68,196 |
Intangibles recorded from acquisitions | 27,722 |  |  | — |  |  | — |  |  | 27,722 |
Accumulated amortization | (23,952) |  |  | (20,076) |  |  | — |  |  | (44,028) |
Total acquisition-related intangibles | $ | 30,234 |  |  | $ | 19,165 |  |  | $ | 2,491 |  |  | $ | 51,890 |
Servicing rights |  |  |  |  |  |  | 1,498 |
Total other intangibles |  |  |  |  |  |  | $ | 53,388 |
December 31, 2022 |  |  |  |  |  |  |
Gross intangibles | $ | 26,464 |  |  | $ | 25,173 |  |  | $ | 1,274 |  |  | $ | 52,911 |
Intangibles recorded from acquisitions | — |  |  | 14,067 |  |  | 1,217 |  |  | 15,284 |
Accumulated amortization | (20,667) |  |  | (15,412) |  |  | — |  |  | (36,079) |
Total acquisition-related intangibles | $ | 5,797 |  |  | $ | 23,828 |  |  | $ | 2,491 |  |  | $ | 32,116 |
Servicing rights |  |  |  |  |  |  | 1,816 |
Total other intangibles |  |  |  |  |  |  | $ | 33,932 |
Summary of Future Amortization of Intangible Assets | The following table details estimated aggregate future amortization of other intangible assets at September 30, 2023:
(Dollars in thousands) |  | Core Deposits |  | Customer Relationships |  | Total
Remaining three months of 2023 |  | $ | 1,692 |  |  | $ | 1,554 |  |  | $ | 3,246 |
2024 |  | 5,881 |  |  | 5,343 |  |  | 11,224 |
2025 |  | 4,614 |  |  | 4,255 |  |  | 8,869 |
2026 |  | 3,738 |  |  | 3,114 |  |  | 6,852 |
2027 |  | 3,046 |  |  | 2,289 |  |  | 5,335 |
Thereafter |  | 11,263 |  |  | 2,610 |  |  | 13,873 |
Total |  | $ | 30,234 |  |  | $ | 19,165 |  |  | $ | 49,399 |

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