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v3.25.3

Investments - Schedule of Municipal Debt Securities and Corporate Debt Securities (Details) | Sep. 30, 2025 | Dec. 31, 2024
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Municipal debt securities |  |
Investments available for sale |  |
Percentage of debt securities | 100.00% | 100.00%
Municipal debt securities | Special revenue bonds |  |
Investments available for sale |  |
Percentage of debt securities | 81.30% | 83.30%
Municipal debt securities | General obligation bonds |  |
Investments available for sale |  |
Percentage of debt securities | 18.70% | 16.70%
Corporate debt securities: |  |
Investments available for sale |  |
Percentage of debt securities | 100.00% | 100.00%
Corporate debt securities: | Financial |  |
Investments available for sale |  |
Percentage of debt securities | 41.90% | 41.80%
Corporate debt securities: | Consumer, non-cyclical |  |
Investments available for sale |  |
Percentage of debt securities | 16.50% | 15.10%
Corporate debt securities: | Industrial |  |
Investments available for sale |  |
Percentage of debt securities | 8.30% | 8.20%
Corporate debt securities: | Utilities |  |
Investments available for sale |  |
Percentage of debt securities | 8.20% | 8.70%
Corporate debt securities: | Technology |  |
Investments available for sale |  |
Percentage of debt securities | 6.50% | 6.40%
Corporate debt securities: | Consumer, cyclical |  |
Investments available for sale |  |
Percentage of debt securities | 6.00% | 6.30%
Corporate debt securities: | Communications |  |
Investments available for sale |  |
Percentage of debt securities | 5.00% | 5.70%
Corporate debt securities: | Energy |  |
Investments available for sale |  |
Percentage of debt securities | 4.90% | 5.10%
Corporate debt securities: | Basic Materials |  |
Investments available for sale |  |
Percentage of debt securities | 2.70% | 2.70%

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