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Marketable Securities - Net Investment Income (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Net investment income |  |  |  |
Debt securities (including realized losses) | $ 3,000 | $ 2,225 | $ 5,069 | $ 5,634
Other investments | 2,140 | 1,941 | 4,402 | 2,727
Gross investment income (including realized losses) | 5,140 | 4,166 | 9,471 | 8,361
Investment expenses | (40) | (68) | (70) | (138)
Net investment income | $ 5,100 | $ 4,098 | $ 9,401 | $ 8,223

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- Definition Amount of interest income, amortization of premium and accretion of discount, on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), investment in debt security measured at amortized cost (held-to-maturity) and investment in debt security measured at fair value with change in fair value recognized in net income (trading); classified as operating. + References No definition available. + Details
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