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Investments - Narrative (Details) - Level 1 - USD ($) $ in Millions | Sep. 30, 2025 | Dec. 31, 2024
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Debt and Equity Securities, FV-NI [Line Items] |  |
Fair market value of held-to-maturity securities | $ 3.9 | $ 4.4
Amortized cost of held-to-maturity securities | $ 3.9 | $ 4.4

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