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Investment Securities - Schedule of available-for-sale securities (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Gain (Loss) on Securities [Line Items] |  |  |
Unrealized gain (loss) on investment securities held at the end of the period | $ 15,664 | $ (14,799) | $ 1,602
Investment securities | 150,522 | 85,415 |
Long-Term Cash Awards |  |  |
Gain (Loss) on Securities [Line Items] |  |  |
Investment securities | $ 107,000 | $ 63,300 |

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