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Goodwill and Other Intangible Assets (Tables) | 3 Months Ended
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Mar. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Changes in Carrying Amount of Goodwill | The following table presents the changes in the carrying amount of goodwill:
|  |  | Three Months Ended March 31,
(dollars in thousands) |  |  |  |  | 2024 |  | 2023
Balance at beginning of period |  |  |  |  | $ | 1,998,716 |  |  | $ | 1,998,716 |
Acquisitions and adjustments |  |  |  |  | — |  |  | — |
Balance at end of period |  |  |  |  | $ | 1,998,716 |  |  | $ | 1,998,716 |
Schedule of Gross Carrying Amounts and Accumulated Amortization of Other Intangible Assets | The gross carrying amounts and accumulated amortization of other intangible assets were as follows:
(dollars in thousands) | Gross Carrying Amount |  | Accumulated Amortization and Impairment |  | Net Carrying Amount
March 31, 2024 |  |  |  |  |
Core deposit | $ | 143,511 |  |  | $ | (77,249) |  |  | $ | 66,262 |
Customer trust relationships | 52,621 |  |  | (22,088) |  |  | 30,533 |
Total other intangible assets | $ | 196,132 |  |  | $ | (99,337) |  |  | $ | 96,795 |
December 31, 2023 |  |  |  |  |
Core deposit | $ | 143,511 |  |  | $ | (72,940) |  |  | $ | 70,571 |
Customer trust relationships | 52,621 |  |  | (20,942) |  |  | 31,679 |
Total other intangible assets | $ | 196,132 |  |  | $ | (93,882) |  |  | $ | 102,250 |
Schedule of Estimated Amortization Expense for Future Years | Estimated amortization expense for future years is as follows:
(dollars in thousands) |
2024 remaining | $ | 15,784 |
2025 | 18,358 |
2026 | 15,555 |
2027 | 12,867 |
2028 | 10,356 |
Thereafter | 23,875 |
Total | $ | 96,795 |

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