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Goodwill and Other Intangible Assets - Amortization expense (Details) - USD ($) $ in Thousands | Sep. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Estimated amortization expense |  |
Net carrying amount | $ 95,094 | $ 116,450
Other intangibles, excluding the SBA servicing assets |  |
Estimated amortization expense |  |
December 31, 2023 | 6,615 |
March 31, 2024 | 6,003 |
June 30, 2024 | 5,739 |
September 30, 2024 | 5,327 |
December 31, 2024 | 5,326 |
Thereafter | 60,429 |
Net carrying amount | $ 89,439 |

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