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Investments - Unrealized Losses (Details) - USD ($) $ in Thousands | Mar. 31, 2026 | Dec. 31, 2025
--- | --- | ---
Amortized Cost |  |
Total Amortized Cost | $ 2,509,253 | $ 1,801,109
Fair value |  |
Total Fair Value | 2,353,044 | 1,660,674
Unrealized Loss |  |
Total Unrealized Loss | $ (156,209) | $ (140,435)
Percent to Total | 100.00% |
NAIC Rating 1 | AAA/AA/A | Aaa/Aa/A |  |
Amortized Cost |  |
Total Amortized Cost | $ 1,987,281 |
Fair value |  |
Total Fair Value | 1,850,834 |
Unrealized Loss |  |
Total Unrealized Loss | $ (136,447) |
Percent to Total | 87.30% |
NAIC Rating 2 | BBB | Baa |  |
Amortized Cost |  |
Total Amortized Cost | $ 423,761 |
Fair value |  |
Total Fair Value | 407,998 |
Unrealized Loss |  |
Total Unrealized Loss | $ (15,763) |
Percent to Total | 10.10% |
NAIC Rating 3 | BB | Ba |  |
Amortized Cost |  |
Total Amortized Cost | $ 50,929 |
Fair value |  |
Total Fair Value | 49,650 |
Unrealized Loss |  |
Total Unrealized Loss | $ (1,279) |
Percent to Total | 0.80% |
NAIC Rating 4 | B | B |  |
Amortized Cost |  |
Total Amortized Cost | $ 43,657 |
Fair value |  |
Total Fair Value | 41,522 |
Unrealized Loss |  |
Total Unrealized Loss | $ (2,135) |
Percent to Total | 1.40% |
NAIC Rating 5 | CCC | Caa |  |
Amortized Cost |  |
Total Amortized Cost | $ 3,625 |
Fair value |  |
Total Fair Value | 3,040 |
Unrealized Loss |  |
Total Unrealized Loss | $ (585) |
Percent to Total | 0.40% |
NAIC Rating 6 | CC Or Lower | Ca or lower |  |
Unrealized Loss |  |
Percent to Total | 0.00% |

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