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v3.24.3

Securities, AFS Securities in Continuous Unrealized Loss Position (Details) $ in Thousands | Sep. 30, 2024 USD ($) Position | Dec. 31, 2023 USD ($) Position
--- | --- | ---
Unrealized Loss Position, Fair Value [Abstract] |  |
Less than 12 months | $ 54,189 | $ 2,765
12 months or longer | 1,370,875 | 1,422,826
Total | 1,425,064 | 1,425,591
Unrealized Loss Position, Unrealized Losses [Abstract] |  |
Less than 12 months | (145) | (82)
12 months or longer | (139,488) | (184,185)
Total | $ (139,633) | $ (184,267)
Unrealized Loss Position, Number of Positions [Abstract] |  |
Less than 12 months | Position | 8 | 10
12 months or longer | Position | 375 | 378
Total | Position | 383 | 388
AIR on AFS debt securities | $ 4,100 | $ 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 | 118,430 | 125,024
Total | 118,430 | 125,024
Unrealized Loss Position, Unrealized Losses [Abstract] |  |
Less than 12 months | 0 | 0
12 months or longer | (5,284) | (8,278)
Total | $ (5,284) | $ (8,278)
Unrealized Loss Position, Number of Positions [Abstract] |  |
Less than 12 months | Position | 0 | 0
12 months or longer | Position | 7 | 8
Total | Position | 7 | 8
Federal Agency [Member] |  |
Unrealized Loss Position, Fair Value [Abstract] |  |
Less than 12 months | $ 0 | $ 0
12 months or longer | 222,639 | 214,740
Total | 222,639 | 214,740
Unrealized Loss Position, Unrealized Losses [Abstract] |  |
Less than 12 months | 0 | 0
12 months or longer | (25,718) | (33,644)
Total | $ (25,718) | $ (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 | $ 0 | $ 0
12 months or longer | 88,132 | 85,528
Total | 88,132 | 85,528
Unrealized Loss Position, Unrealized Losses [Abstract] |  |
Less than 12 months | 0 | 0
12 months or longer | (6,761) | (9,956)
Total | $ (6,761) | $ (9,956)
Unrealized Loss Position, Number of Positions [Abstract] |  |
Less than 12 months | Position | 0 | 0
12 months or longer | Position | 66 | 66
Total | Position | 66 | 66
Mortgage-Backed [Member] |  |
Unrealized Loss Position, Fair Value [Abstract] |  |
Less than 12 months | $ 15,893 | $ 53
12 months or longer | 389,558 | 421,259
Total | 405,451 | 421,312
Unrealized Loss Position, Unrealized Losses [Abstract] |  |
Less than 12 months | (47) | (1)
12 months or longer | (37,845) | (51,565)
Total | $ (37,892) | $ (51,566)
Unrealized Loss Position, Number of Positions [Abstract] |  |
Less than 12 months | Position | 2 | 7
12 months or longer | Position | 153 | 156
Total | Position | 155 | 163
Collateralized Mortgage Obligations [Member] |  |
Unrealized Loss Position, Fair Value [Abstract] |  |
Less than 12 months | $ 36,841 | $ 1,333
12 months or longer | 510,166 | 536,678
Total | 547,007 | 538,011
Unrealized Loss Position, Unrealized Losses [Abstract] |  |
Less than 12 months | (74) | (6)
12 months or longer | (58,837) | (73,351)
Total | $ (58,911) | $ (73,357)
Unrealized Loss Position, Number of Positions [Abstract] |  |
Less than 12 months | Position | 5 | 2
12 months or longer | Position | 119 | 118
Total | Position | 124 | 120
Corporate [Member] |  |
Unrealized Loss Position, Fair Value [Abstract] |  |
Less than 12 months | $ 1,455 | $ 1,379
12 months or longer | 41,950 | 39,597
Total | 43,405 | 40,976
Unrealized Loss Position, Unrealized Losses [Abstract] |  |
Less than 12 months | (24) | (75)
12 months or longer | (5,043) | (7,391)
Total | $ (5,067) | $ (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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