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Equity method investment - Narrative (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023 | Dec. 31, 2023
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Technology, trade name and customer relationship intangibles | $ 24,313 |  | $ 24,313 |  | $ 27,465
Amortization of Intangible Assets | 1,568 | $ 1,780 | 3,152 | $ 3,574 |
Dividends received from equity method investment |  |  | 46,873 | 27,592 |
Loans | 33,769,150 |  | 33,769,150 |  | 32,676,091
Proceeds from Sale, Loan and Lease, Held-for-Investment |  |  | 20,470 | 117,216 |
Bankers Healthcare Group, LLC |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Technology, trade name and customer relationship intangibles | 5,800 |  | 5,800 |  | 6,000
Amortization of Intangible Assets | 59 | 87 | 118 | 174 |
Accretion income | 35 | 45 | 74 | 140 |
Dividends received from equity method investment | 43,300 | 3,600 | 46,900 | 27,600 |
Payments to Acquire Loans Held-for-investment | 0 | $ 0 | 0 | $ 0 |
Loans | 204,900 |  | 204,900 |  | $ 263,000
Proceeds from Sale, Loan and Lease, Held-for-Investment | $ 20,500 |  | $ 20,500 |  |

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