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Investments - Equity Securities (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2022 | Dec. 31, 2023
Debt and Equity Securities, FV-NI [Line Items] |  |
Cost | $ 146,256 |
Gross Unrealized Losses | (11,420) |
Fair Value | 134,836 | $ 0
Fixed income mutual funds |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Cost | 70,257 |
Gross Unrealized Losses | (2,620) |
Fair Value | 67,637 |
Exchange traded mutual funds |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Cost | 75,999 |
Gross Unrealized Losses | (8,800) |
Fair Value | $ 67,199 |

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