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Investments - Net Investment Income (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2025 | Mar. 31, 2024
Net Investment Income [Line Items] |  |  |
Gross investment income |  | $ 71,456 | $ 72,146
Investment expenses | [1] | (2,882) | (2,925)
Net investment income |  | 68,574 | 69,221
Fixed-maturities |  |  |
Net Investment Income [Line Items] |  |  |
Gross investment income |  | 56,714 | 57,259
Equity securities |  |  |
Net Investment Income [Line Items] |  |  |
Gross investment income |  | 2,145 | 2,539
Residential mortgage loans held for sale |  |  |
Net Investment Income [Line Items] |  |  |
Gross investment income | [2] | 6,273 | 1,793
Short-term investments |  |  |
Net Investment Income [Line Items] |  |  |
Gross investment income |  | 4,751 | 8,958
Other |  |  |
Net Investment Income [Line Items] |  |  |
Gross investment income | [1] | $ 1,573 | $ 1,597
[1] | Includes the impact from our securities lending activities. Investment expenses also include other investment management expenses.
[2] | See Note 7 for additional information on our residential mortgage loans held for sale.

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