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Marketable Securities - Net Investment Income (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Net investment income |  |  |  |
Debt securities (including realized losses) | $ 3,843 | $ 2,280 | $ 8,912 | $ 7,914
Other investments | 1,850 | 1,551 | 6,252 | 4,278
Gross investment income (including realized losses) | 5,693 | 3,831 | 15,164 | 12,192
Investment expenses | (45) | (65) | (115) | (203)
Net investment income | $ 5,648 | $ 3,766 | $ 15,049 | $ 11,989

X
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