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Investments - Maturity Table (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | $ 2,042,473 | $ 2,563,984
Estimated Fair Value | 1,933,226 | $ 2,411,622
2025 |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 299,816 |
Estimated Fair Value | 298,648 |
2026 |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 549,175 |
Estimated Fair Value | 520,793 |
2027 |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 99,018 |
Estimated Fair Value | 96,303 |
2038 |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 66 |
Estimated Fair Value | 66 |
2039 |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 551 |
Estimated Fair Value | 531 |
2042 |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 2,112 |
Estimated Fair Value | 1,793 |
2043 |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 3,761 |
Estimated Fair Value | 3,299 |
2044 |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 4,085 |
Estimated Fair Value | 3,651 |
2045 |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 4,518 |
Estimated Fair Value | 3,919 |
2046 |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 6,953 |
Estimated Fair Value | 5,965 |
2047 |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 6,704 |
Estimated Fair Value | 5,781 |
2048 |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 1,702 |
Estimated Fair Value | 1,481 |
2049 |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 14,838 |
Estimated Fair Value | 12,842 |
2050 |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 101,145 |
Estimated Fair Value | 78,475 |
2051 |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 144,694 |
Estimated Fair Value | 111,058 |
2052 |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 58,268 |
Estimated Fair Value | 50,497 |
2053 |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 297,695 |
Estimated Fair Value | 294,197 |
2054 |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 142,209 |
Estimated Fair Value | 135,800 |
2055 |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 71,611 |
Estimated Fair Value | 70,409 |
2056 |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 194,173 |
Estimated Fair Value | 197,363 |
2058 |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 39,379 |
Estimated Fair Value | $ 40,355 |

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