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Investments Investments - Equity Investments (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Dec. 31, 2024
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Equity Securities Excluded From Fair Value Table | $ 20,618 |  | $ 20,618 |  | $ 20,618
Debt Securities, Available-for-sale, Allowance for Credit Loss | 0 | $ 0 | 0 | $ 0 | 0
Other than Temporary Impairment Losses, Investments | 0 | $ 581 | 0 | $ 2,061 |
Private Equity Funds [Member] |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Other investments | 7,684 |  | 7,684 |  | $ 7,499
Commitments [Member] | Private Equity Funds [Member] |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Other investments | $ 1,658 |  | $ 1,658 |  |

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