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Goodwill and Other Intangible Assets (Tables) | 6 Months Ended
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Jun. 30, 2025
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 June 30, |  | Six Months Ended June 30,
(dollars in thousands) | 2025 |  | 2024 |  | 2025 |  | 2024
Balance at beginning of period | $ | 2,175,251 |  |  | $ | 1,998,716 |  |  | $ | 2,175,251 |  |  | $ | 1,998,716 |
Acquisitions and adjustments | 234,635 |  |  | 171,993 |  |  | 234,635 |  |  | 171,993 |
Balance at end of period | $ | 2,409,886 |  |  | $ | 2,170,709 |  |  | $ | 2,409,886 |  |  | $ | 2,170,709 |
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
June 30, 2025 |  |  |  |  |
Core deposit | $ | 586,735 |  |  | $ | (119,268) |  |  | $ | 467,467 |
Customer relationship | 93,892 |  |  | (26,873) |  |  | 67,019 |
Total other intangible assets | $ | 680,627 |  |  | $ | (146,141) |  |  | $ | 534,486 |
December 31, 2024 |  |  |  |  |
Core deposit | $ | 189,636 |  |  | $ | (95,950) |  |  | $ | 93,686 |
Customer relationship | 50,892 |  |  | (23,731) |  |  | 27,161 |
Total other intangible assets | $ | 240,528 |  |  | $ | (119,681) |  |  | $ | 120,847 |
Schedule of Estimated Amortization Expense for Future Years | Estimated amortization expense for future years is as follows:
(dollars in thousands) |
2025 remaining | $ | 52,200 |
2026 | 96,109 |
2027 | 84,810 |
2028 | 73,689 |
2029 | 62,983 |
Thereafter | 164,695 |
Total | $ | 534,486 |

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