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v3.25.1

Securities - Amortized cost and fair value for available for sale securities (Details) - USD ($) $ in Thousands | Mar. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Investment securities held-to-maturity |  |
Amortized cost | $ 2,195,980 | $ 2,254,670
Gross Unrealized Losses | (375,507) | (420,143)
Fair Value | 1,820,473 | 1,834,527
Investment securities available for sale |  |
Amortized cost | 6,358,427 | 5,129,216
Gross Unrealized Gains | 13,016 | 701
Gross Unrealized Losses | (518,074) | (809,324)
Fair Value | 5,853,369 | 4,320,593
U.S. Treasuries |  |
Investment securities available for sale |  |
Amortized cost | 18,294 | 10,654
Gross Unrealized Gains |  | 2
Gross Unrealized Losses | (1) |
Fair Value | 18,293 | 10,656
U.S. Government agencies |  |
Investment securities held-to-maturity |  |
Amortized cost | 132,908 | 147,272
Gross Unrealized Losses | (20,361) | (23,498)
Fair Value | 112,547 | 123,774
Investment securities available for sale |  |
Amortized cost |  | 169,207
Gross Unrealized Losses |  | (18,789)
Fair Value |  | 150,418
Residential mortgage-backed securities issued by U.S. government agencies or sponsored enterprises |  |
Investment securities held-to-maturity |  |
Amortized cost | 1,262,776 | 1,297,543
Gross Unrealized Losses | (214,924) | (241,204)
Fair Value | 1,047,852 | 1,056,339
Investment securities available for sale |  |
Amortized cost | 1,613,205 | 1,659,851
Gross Unrealized Gains | 3,570 | 97
Gross Unrealized Losses | (169,659) | (282,423)
Fair Value | 1,447,116 | 1,377,525
Residential collateralized mortgage-obligations issued by U.S. government agencies or sponsored enterprises |  |
Investment securities held-to-maturity |  |
Amortized cost | 405,003 | 411,721
Gross Unrealized Losses | (63,798) | (72,057)
Fair Value | 341,205 | 339,664
Investment securities available for sale |  |
Amortized cost | 2,397,132 | 557,288
Gross Unrealized Gains | 7,758 | 19
Gross Unrealized Losses | (57,756) | (98,212)
Fair Value | 2,347,134 | 459,095
Commercial mortgage-backed securities issued by U.S. government agencies or sponsored enterprises |  |
Investment securities held-to-maturity |  |
Amortized cost | 346,083 | 348,338
Gross Unrealized Losses | (66,345) | (72,391)
Fair Value | 279,738 | 275,947
Investment securities available for sale |  |
Amortized cost | 643,484 | 1,234,573
Gross Unrealized Gains | 1,396 | 562
Gross Unrealized Losses | (84,246) | (194,580)
Fair Value | 560,634 | 1,040,555
State and municipal obligations |  |
Investment securities available for sale |  |
Amortized cost | 1,085,891 | 1,117,330
Gross Unrealized Gains | 22 | 2
Gross Unrealized Losses | (175,264) | (171,609)
Fair Value | 910,649 | 945,723
Small Business Administration loan-backed securities |  |
Investment securities held-to-maturity |  |
Amortized cost | 49,210 | 49,796
Gross Unrealized Losses | (10,079) | (10,993)
Fair Value | 39,131 | 38,803
Investment securities available for sale |  |
Amortized cost | 571,923 | 351,814
Gross Unrealized Gains | 270 | 19
Gross Unrealized Losses | (29,640) | (41,721)
Fair Value | 542,553 | 310,112
Corporate securities |  |
Investment securities available for sale |  |
Amortized cost | 28,498 | 28,499
Gross Unrealized Losses | (1,508) | (1,990)
Fair Value | $ 26,990 | $ 26,509

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