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Equity method investment - Narrative (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022 | Dec. 31, 2022
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Technology, trade name and customer relationship intangibles | $ 30,981 |  | $ 30,981 |  | $ 34,555
Amortization of Intangible Assets | 1,780 | $ 2,051 | 3,574 | $ 3,922 |
Dividends received from equity method investment |  |  | 27,592 | 40,762 |
Loans | 31,153,290 |  | 31,153,290 |  | 29,041,605
Bankers Healthcare Group, LLC |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Technology, trade name and customer relationship intangibles | 6,100 |  | 6,100 |  | 6,300
Amortization of Intangible Assets | 87 | 128 | 174 | 256 |
Accretion income | 45 | 188 | 140 | 431 |
Dividends received from equity method investment | 3,600 | 28,500 | 27,600 | 40,800 |
Payments to Acquire Loans Held-for-investment | 0 | $ 76,000 |  | $ 76,000 |
Loans | $ 305,200 |  | $ 305,200 |  | $ 350,600

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