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Goodwill and Other Intangible Assets (Narrative) (Details) - USD ($) $ in Thousands |  | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
Jan. 01, 2023 | Sep. 30, 2023 | Dec. 31, 2022 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Amortization of intangible assets |  | $ 1,953 |  | $ 889 | $ 6,147 | $ 2,859
SBA guaranteed servicing income |  | 846 |  | $ 1,120 | 2,693 | $ 2,901
Loans |  | 8,027,037 | $ 6,665,145 |  | 8,027,037 |
Goodwill impairment |  |  | 0 |  |  |
Sold portions of SBA loans with servicing retained - not included in tables above |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Loans |  | $ 364,859 | $ 392,370 |  | $ 364,859 |
Customer lists |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Useful life |  | 5 years |  |  | 5 years |
Core deposit intangibles |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Useful life |  | 10 years |  |  | 10 years |
Core deposit intangibles | GrandSouth |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Useful life | 10 years |  |  |  |  |
Finite-lived intangible assets acquired | $ 28,800 |  |  |  |  |

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