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Securities, AFS Securities in Continuous Unrealized Loss Position (Details) $ in Thousands | Dec. 31, 2024 USD ($) Position | Dec. 31, 2023 USD ($) Position
--- | --- | ---
Unrealized Loss Position, Fair Value [Abstract] |  |
Less than 12 months | $ 195,884 | $ 2,765
12 months or longer | 1,291,001 | 1,422,826
Total | 1,486,885 | 1,425,591
Unrealized Loss Position, Unrealized Losses [Abstract] |  |
Less than 12 months | (2,515) | (82)
12 months or longer | (162,371) | (184,185)
Total | $ (164,886) | $ (184,267)
Unrealized Loss Position, Number of Positions [Abstract] |  |
Less than 12 months | Position | 32 | 10
12 months or longer | Position | 369 | 378
Total | Position | 401 | 388
AIR on AFS debt securities | $ 4,400 | $ 3,900
Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration] | Other Assets | Other Assets
U.S. Treasury [Member] |  |
Unrealized Loss Position, Fair Value [Abstract] |  |
Less than 12 months | $ 0 | $ 0
12 months or longer | 92,737 | 125,024
Total | 92,737 | 125,024
Unrealized Loss Position, Unrealized Losses [Abstract] |  |
Less than 12 months | 0 | 0
12 months or longer | (6,107) | (8,278)
Total | $ (6,107) | $ (8,278)
Unrealized Loss Position, Number of Positions [Abstract] |  |
Less than 12 months | Position | 0 | 0
12 months or longer | Position | 5 | 8
Total | Position | 5 | 8
Federal Agency [Member] |  |
Unrealized Loss Position, Fair Value [Abstract] |  |
Less than 12 months | $ 0 | $ 0
12 months or longer | 218,517 | 214,740
Total | 218,517 | 214,740
Unrealized Loss Position, Unrealized Losses [Abstract] |  |
Less than 12 months | 0 | 0
12 months or longer | (29,831) | (33,644)
Total | $ (29,831) | $ (33,644)
Unrealized Loss Position, Number of Positions [Abstract] |  |
Less than 12 months | Position | 0 | 0
12 months or longer | Position | 16 | 16
Total | Position | 16 | 16
State & Municipal [Member] |  |
Unrealized Loss Position, Fair Value [Abstract] |  |
Less than 12 months | $ 759 | $ 0
12 months or longer | 86,731 | 85,528
Total | 87,490 | 85,528
Unrealized Loss Position, Unrealized Losses [Abstract] |  |
Less than 12 months | (4) | 0
12 months or longer | (7,963) | (9,956)
Total | $ (7,967) | $ (9,956)
Unrealized Loss Position, Number of Positions [Abstract] |  |
Less than 12 months | Position | 1 | 0
12 months or longer | Position | 66 | 66
Total | Position | 67 | 66
Mortgage-Backed [Member] |  |
Unrealized Loss Position, Fair Value [Abstract] |  |
Less than 12 months | $ 95,153 | $ 53
12 months or longer | 368,589 | 421,259
Total | 463,742 | 421,312
Unrealized Loss Position, Unrealized Losses [Abstract] |  |
Less than 12 months | (1,374) | (1)
12 months or longer | (46,625) | (51,565)
Total | $ (47,999) | $ (51,566)
Unrealized Loss Position, Number of Positions [Abstract] |  |
Less than 12 months | Position | 16 | 7
12 months or longer | Position | 152 | 156
Total | Position | 168 | 163
Collateralized Mortgage Obligations [Member] |  |
Unrealized Loss Position, Fair Value [Abstract] |  |
Less than 12 months | $ 98,494 | $ 1,333
12 months or longer | 480,891 | 536,678
Total | 579,385 | 538,011
Unrealized Loss Position, Unrealized Losses [Abstract] |  |
Less than 12 months | (1,128) | (6)
12 months or longer | (68,386) | (73,351)
Total | $ (69,514) | $ (73,357)
Unrealized Loss Position, Number of Positions [Abstract] |  |
Less than 12 months | Position | 14 | 2
12 months or longer | Position | 116 | 118
Total | Position | 130 | 120
Corporate [Member] |  |
Unrealized Loss Position, Fair Value [Abstract] |  |
Less than 12 months | $ 1,478 | $ 1,379
12 months or longer | 43,536 | 39,597
Total | 45,014 | 40,976
Unrealized Loss Position, Unrealized Losses [Abstract] |  |
Less than 12 months | (9) | (75)
12 months or longer | (3,459) | (7,391)
Total | $ (3,468) | $ (7,466)
Unrealized Loss Position, Number of Positions [Abstract] |  |
Less than 12 months | Position | 1 | 1
12 months or longer | Position | 14 | 14
Total | Position | 15 | 15

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