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Investments - Unrealized Losses (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Cost or amortized Cost |  |
Total Cost or Amortized Cost | $ 2,066,699 | $ 2,768,205
Fair value |  |
Total Fair Value | 1,916,331 | 2,543,594
Unrealized Loss |  |
Total Unrealized Loss | $ (150,368) | $ (224,611)
Percent to Total | 100.00% |
NAIC Rating 1 | AAA/AA/A | Aaa/Aa/A |  |
Cost or amortized Cost |  |
Total Cost or Amortized Cost | $ 1,675,642 |
Fair value |  |
Total Fair Value | 1,539,255 |
Unrealized Loss |  |
Total Unrealized Loss | $ (136,387) |
Percent to Total | 90.70% |
NAIC Rating 2 | BBB | Baa |  |
Cost or amortized Cost |  |
Total Cost or Amortized Cost | $ 327,018 |
Fair value |  |
Total Fair Value | 315,660 |
Unrealized Loss |  |
Total Unrealized Loss | $ (11,358) |
Percent to Total | 7.60% |
NAIC Rating 3 | BB | Ba |  |
Cost or amortized Cost |  |
Total Cost or Amortized Cost | $ 32,804 |
Fair value |  |
Total Fair Value | 32,154 |
Unrealized Loss |  |
Total Unrealized Loss | $ (650) |
Percent to Total | 0.40% |
NAIC Rating 4 | B | B |  |
Cost or amortized Cost |  |
Total Cost or Amortized Cost | $ 26,763 |
Fair value |  |
Total Fair Value | 25,279 |
Unrealized Loss |  |
Total Unrealized Loss | $ (1,484) |
Percent to Total | 1.00% |
NAIC Rating 5 | CCC | Caa |  |
Cost or amortized Cost |  |
Total Cost or Amortized Cost | $ 3,652 |
Fair value |  |
Total Fair Value | 3,330 |
Unrealized Loss |  |
Total Unrealized Loss | $ (322) |
Percent to Total | 0.20% |
NAIC Rating 6 | CC Or Lower | Ca or lower |  |
Cost or amortized Cost |  |
Total Cost or Amortized Cost | $ 820 |
Fair value |  |
Total Fair Value | 653 |
Unrealized Loss |  |
Total Unrealized Loss | $ (167) |
Percent to Total | 0.10% |

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