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Investments - Schedule of Other Long-Term Investments (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
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Long-Term Investment [Line Items] |  |
Commercial mortgage loan participations | $ 1,285,697 | $ 1,235,759
Other |  |
Long-Term Investment [Line Items] |  |
Commercial mortgage loan participations | 42,966 | 46,259
Investment funds |  |
Long-Term Investment [Line Items] |  |
Commercial mortgage loan participations | 1,037,447 | 986,766
Company-owned life insurance |  |
Long-Term Investment [Line Items] |  |
Commercial mortgage loan participations | $ 205,284 | $ 202,734

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