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Investment Securities - Held-to-Maturity with Unrecognized Losses (Details) - USD ($) $ in Thousands | Jun. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Fair Value |  |
Less than 12 months | $ 63,800 | $ 37,007
12 months or longer | 2,404,995 | 2,402,361
Total | 2,468,795 | 2,439,368
Unrecognized Losses |  |
Less than 12 months | (2,767) | (430)
12 months or longer | (453,261) | (483,630)
Total | (456,028) | (484,060)
U.S. government-sponsored entities and agencies |  |
Fair Value |  |
Less than 12 months | 0 | 0
12 months or longer | 694,377 | 664,331
Total | 694,377 | 664,331
Unrecognized Losses |  |
Less than 12 months | 0 | 0
12 months or longer | (142,285) | (168,653)
Total | (142,285) | (168,653)
Mortgage-backed securities |  |
Fair Value |  |
Less than 12 months | 0 | 0
12 months or longer | 796,079 | 800,666
Total | 796,079 | 800,666
Unrecognized Losses |  |
Less than 12 months | 0 | 0
12 months or longer | (145,385) | (169,546)
Total | (145,385) | (169,546)
States and political subdivisions |  |
Fair Value |  |
Less than 12 months | 63,800 | 37,007
12 months or longer | 914,539 | 937,364
Total | 978,339 | 974,371
Unrecognized Losses |  |
Less than 12 months | (2,767) | (430)
12 months or longer | (165,591) | (145,431)
Total | $ (168,358) | $ (145,861)

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