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Investments (Equity Securities) (Details) - USD ($) $ in Thousands | Mar. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Debt and Equity Securities, FV-NI [Line Items] |  |
Equity securities | $ 5,493 | $ 5,447
Bond Mutual Funds [Member] |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Equity securities | 748 | 739
Common Stock |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Equity securities | 952 | 810
Non-redeemable Preferred Stock [Member] |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Equity securities | 7 | 7
Nonredeemable Preferred Stock Fund Member [Member] |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Equity securities | $ 3,786 | $ 3,891

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