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Goodwill and Other Intangible Assets - Amortization expense (Details) - USD ($) $ in Thousands | Sep. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Estimated amortization expense |  |
Net carrying amount | $ 71,835 | $ 88,776
Other intangibles, excluding the SBA servicing assets |  |
Estimated amortization expense |  |
December 31, 2024 | 5,326 |
March 31, 2025 | 5,100 |
June 30, 2025 | 4,836 |
September 30, 2025 | 4,419 |
December 31, 2025 | 4,411 |
Thereafter | 41,664 |
Net carrying amount | $ 65,756 |

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