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Investments (Details) - USD ($) $ in Thousands | 9 Months Ended |
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Dec. 31, 2023
Investments |  |  |
Investments - Available-for-sale | $ 0 |  | $ 98,031
Available-for-sale investments |  |  |
Net unrealized gain (loss) on available-for-sale debt securities |  | $ (60) |
Net realized gain (loss) on available-for-sale debt securities | $ 57 |  |

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