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Investment Securities - Held-to-Maturity with Unrecognized Losses (Details) - USD ($) $ in Thousands | Mar. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Fair Value |  |
Less than 12 months | $ 57,635 | $ 37,007
12 months or longer | 2,419,051 | 2,402,361
Total | 2,476,686 | 2,439,368
Unrecognized Losses |  |
Less than 12 months | (1,706) | (430)
12 months or longer | (455,567) | (483,630)
Total | (457,273) | (484,060)
U.S. government-sponsored entities and agencies |  |
Fair Value |  |
Less than 12 months | 0 | 0
12 months or longer | 689,134 | 664,331
Total | 689,134 | 664,331
Unrecognized Losses |  |
Less than 12 months | 0 | 0
12 months or longer | (145,696) | (168,653)
Total | (145,696) | (168,653)
Mortgage-backed securities |  |
Fair Value |  |
Less than 12 months | 0 | 0
12 months or longer | 807,534 | 800,666
Total | 807,534 | 800,666
Unrecognized Losses |  |
Less than 12 months | 0 | 0
12 months or longer | (150,470) | (169,546)
Total | (150,470) | (169,546)
States and political subdivisions |  |
Fair Value |  |
Less than 12 months | 57,635 | 37,007
12 months or longer | 922,383 | 937,364
Total | 980,018 | 974,371
Unrecognized Losses |  |
Less than 12 months | (1,706) | (430)
12 months or longer | (159,401) | (145,431)
Total | $ (161,107) | $ (145,861)

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