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Investments - Net Investment Income (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Investment income (loss) from portfolios |  |  |  |
Total investment income | $ 21,641 | $ 17,893 | $ 62,819 | $ 50,628
Less: investment expenses | 608 | 571 | 1,808 | 1,393
Net investment income | 21,033 | 17,322 | 61,011 | 49,235
Available-for-sale securities |  |  |  |
Investment income (loss) from portfolios |  |  |  |
Available-for-sale, equity securities, cash equivalents, and other | 14,068 | 12,891 | 41,881 | 36,611
Equity securities |  |  |  |
Investment income (loss) from portfolios |  |  |  |
Available-for-sale, equity securities, cash equivalents, and other | 1,220 | 1,119 | 3,533 | 3,536
Limited partnerships |  |  |  |
Investment income (loss) from portfolios |  |  |  |
Limited partnerships | 114 | (127) | 1,269 | 134
Agent loans |  |  |  |
Investment income (loss) from portfolios |  |  |  |
Available-for-sale, equity securities, cash equivalents, and other | 1,633 | 1,070 | 4,634 | 2,891
Cash equivalents and other |  |  |  |
Investment income (loss) from portfolios |  |  |  |
Available-for-sale, equity securities, cash equivalents, and other | $ 4,606 | $ 2,940 | $ 11,502 | $ 7,456

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