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v3.25.3

Securities, AFS Securities in Continuous Unrealized Loss Position (Details) $ in Thousands | Sep. 30, 2025 USD ($) Position | Dec. 31, 2024 USD ($) Position
--- | --- | ---
Unrealized Loss Position, Fair Value [Abstract] |  |
Less than 12 months | $ 83,144 | $ 195,884
12 months or longer | 1,237,113 | 1,291,001
Total | 1,320,257 | 1,486,885
Unrealized Loss Position, Unrealized Losses [Abstract] |  |
Less than 12 months | (335) | (2,515)
12 months or longer | (112,620) | (162,371)
Total | $ (112,955) | $ (164,886)
Unrealized Loss Position, Number of Positions [Abstract] |  |
Less than 12 months | Position | 10 | 32
12 months or longer | Position | 349 | 369
Total | Position | 359 | 401
AIR on AFS debt securities | $ 4,700 | $ 4,400
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 | 96,046 | 92,737
Total | 96,046 | 92,737
Unrealized Loss Position, Unrealized Losses [Abstract] |  |
Less than 12 months | 0 | 0
12 months or longer | (3,173) | (6,107)
Total | $ (3,173) | $ (6,107)
Unrealized Loss Position, Number of Positions [Abstract] |  |
Less than 12 months | Position | 0 | 0
12 months or longer | Position | 5 | 5
Total | Position | 5 | 5
Federal Agency [Member] |  |
Unrealized Loss Position, Fair Value [Abstract] |  |
Less than 12 months | $ 0 | $ 0
12 months or longer | 229,056 | 218,517
Total | 229,056 | 218,517
Unrealized Loss Position, Unrealized Losses [Abstract] |  |
Less than 12 months | 0 | 0
12 months or longer | (19,265) | (29,831)
Total | $ (19,265) | $ (29,831)
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 | $ 0 | $ 759
12 months or longer | 87,933 | 86,731
Total | 87,933 | 87,490
Unrealized Loss Position, Unrealized Losses [Abstract] |  |
Less than 12 months | 0 | (4)
12 months or longer | (4,664) | (7,963)
Total | $ (4,664) | $ (7,967)
Unrealized Loss Position, Number of Positions [Abstract] |  |
Less than 12 months | Position | 0 | 1
12 months or longer | Position | 65 | 66
Total | Position | 65 | 67
Mortgage-Backed [Member] |  |
Unrealized Loss Position, Fair Value [Abstract] |  |
Less than 12 months | $ 35,208 | $ 95,153
12 months or longer | 347,339 | 368,589
Total | 382,547 | 463,742
Unrealized Loss Position, Unrealized Losses [Abstract] |  |
Less than 12 months | (282) | (1,374)
12 months or longer | (30,974) | (46,625)
Total | $ (31,256) | $ (47,999)
Unrealized Loss Position, Number of Positions [Abstract] |  |
Less than 12 months | Position | 4 | 16
12 months or longer | Position | 143 | 152
Total | Position | 147 | 168
Collateralized Mortgage Obligations [Member] |  |
Unrealized Loss Position, Fair Value [Abstract] |  |
Less than 12 months | $ 47,936 | $ 98,494
12 months or longer | 451,292 | 480,891
Total | 499,228 | 579,385
Unrealized Loss Position, Unrealized Losses [Abstract] |  |
Less than 12 months | (53) | (1,128)
12 months or longer | (52,490) | (68,386)
Total | $ (52,543) | $ (69,514)
Unrealized Loss Position, Number of Positions [Abstract] |  |
Less than 12 months | Position | 6 | 14
12 months or longer | Position | 111 | 116
Total | Position | 117 | 130
Corporate [Member] |  |
Unrealized Loss Position, Fair Value [Abstract] |  |
Less than 12 months | $ 0 | $ 1,478
12 months or longer | 25,447 | 43,536
Total | 25,447 | 45,014
Unrealized Loss Position, Unrealized Losses [Abstract] |  |
Less than 12 months | 0 | (9)
12 months or longer | (2,054) | (3,459)
Total | $ (2,054) | $ (3,468)
Unrealized Loss Position, Number of Positions [Abstract] |  |
Less than 12 months | Position | 0 | 1
12 months or longer | Position | 9 | 14
Total | Position | 9 | 15

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