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Investment Securities - Continuous Unrealized Loss (Details) - USD ($) $ in Thousands | Dec. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Fair value |  |
Less than 12 months | $ 826,487 | $ 15,311
12 months or more | 1,228,953 | 2,016,530
Total fair value | 2,055,440 | 2,031,841
Unrealized loss |  |
Less than 12 months | (2,966) | (937)
12 months or more | (238,468) | (367,045)
Total unrealized loss | (241,434) | (367,982)
Corporate bonds |  |
Fair value |  |
Less than 12 months |  | 0
12 months or more |  | 9,890
Total fair value |  | 9,890
Unrealized loss |  |
Less than 12 months |  | 0
12 months or more |  | (110)
Total unrealized loss |  | (110)
Agency bond securities |  |
Fair value |  |
Less than 12 months | 0 | 0
12 months or more | 156,975 | 202,496
Total fair value | 156,975 | 202,496
Unrealized loss |  |
Less than 12 months | 0 | 0
12 months or more | (22,252) | (38,132)
Total unrealized loss | (22,252) | (38,132)
Agency mortgage-backed securities |  |
Fair value |  |
Less than 12 months | 504,676 | 15,311
12 months or more | 1,049,422 | 1,781,301
Total fair value | 1,554,098 | 1,796,612
Unrealized loss |  |
Less than 12 months | (1,764) | (937)
12 months or more | (210,635) | (322,530)
Total unrealized loss | (212,399) | (323,467)
Municipal bonds |  |
Fair value |  |
Less than 12 months | 0 | 0
12 months or more | 22,556 | 22,843
Total fair value | 22,556 | 22,843
Unrealized loss |  |
Less than 12 months | 0 | 0
12 months or more | (5,581) | (6,273)
Total unrealized loss | (5,581) | $ (6,273)
Asset-backed securities |  |
Fair value |  |
Less than 12 months | 321,811 |
12 months or more | 0 |
Total fair value | 321,811 |
Unrealized loss |  |
Less than 12 months | (1,202) |
12 months or more | 0 |
Total unrealized loss | $ (1,202) |

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