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v3.24.3

Securities, Available for Sale (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023 | Dec. 31, 2023
Debt securities, available-for-sale [Abstract] |  |  |  |  |
Amortized cost | $ 1,648,275 |  | $ 1,648,275 |  | $ 1,615,078
Unrealized gains | 696 |  | 696 |  | 47
Unrealized losses | (139,633) |  | (139,633) |  | (184,267)
Estimated fair value | 1,509,338 |  | 1,509,338 |  | 1,430,858
Allowance for credit losses on AFS securities | 0 |  | 0 |  | 0
Gross realized gains | 0 | $ 0 |  |  |
Gross realized losses | 0 | $ 0 |  | $ 4,500 |
Gain recognized on sale of previously written-off security |  |  | 2,300 |  |
U.S. Treasury [Member] |  |  |  |  |
Debt securities, available-for-sale [Abstract] |  |  |  |  |
Amortized cost | 133,704 |  | 133,704 |  | 133,302
Unrealized gains | 118 |  | 118 |  | 0
Unrealized losses | (5,284) |  | (5,284) |  | (8,278)
Estimated fair value | 128,538 |  | 128,538 |  | 125,024
Federal Agency [Member] |  |  |  |  |
Debt securities, available-for-sale [Abstract] |  |  |  |  |
Amortized cost | 248,357 |  | 248,357 |  | 248,384
Unrealized gains | 0 |  | 0 |  | 0
Unrealized losses | (25,718) |  | (25,718) |  | (33,644)
Estimated fair value | 222,639 |  | 222,639 |  | 214,740
State & Municipal [Member] |  |  |  |  |
Debt securities, available-for-sale [Abstract] |  |  |  |  |
Amortized cost | 95,657 |  | 95,657 |  | 96,251
Unrealized gains | 7 |  | 7 |  | 11
Unrealized losses | (6,761) |  | (6,761) |  | (9,956)
Estimated fair value | 88,903 |  | 88,903 |  | 86,306
Mortgage-Backed, Government Sponsored Enterprises [Member] |  |  |  |  |
Debt securities, available-for-sale [Abstract] |  |  |  |  |
Amortized cost | 387,388 |  | 387,388 |  | 399,532
Unrealized gains | 138 |  | 138 |  | 7
Unrealized losses | (33,068) |  | (33,068) |  | (44,264)
Estimated fair value | 354,458 |  | 354,458 |  | 355,275
Mortgage-Backed, U.S. Government Agency Securities [Member] |  |  |  |  |
Debt securities, available-for-sale [Abstract] |  |  |  |  |
Amortized cost | 72,076 |  | 72,076 |  | 74,281
Unrealized gains | 14 |  | 14 |  | 14
Unrealized losses | (4,824) |  | (4,824) |  | (7,302)
Estimated fair value | 67,266 |  | 67,266 |  | 66,993
Collateralized Mortgage Obligations, Government-Sponsored Enterprises [Member] |  |  |  |  |
Debt securities, available-for-sale [Abstract] |  |  |  |  |
Amortized cost | 478,051 |  | 478,051 |  | 452,715
Unrealized gains | 303 |  | 303 |  | 15
Unrealized losses | (36,269) |  | (36,269) |  | (48,257)
Estimated fair value | 442,085 |  | 442,085 |  | 404,473
Collateralized Mortgage Obligations, U.S. Government Agency Securities [Member] |  |  |  |  |
Debt securities, available-for-sale [Abstract] |  |  |  |  |
Amortized cost | 184,570 |  | 184,570 |  | 162,171
Unrealized gains | 116 |  | 116 |  | 0
Unrealized losses | (22,642) |  | (22,642) |  | (25,100)
Estimated fair value | 162,044 |  | 162,044 |  | 137,071
Corporate [Member] |  |  |  |  |
Debt securities, available-for-sale [Abstract] |  |  |  |  |
Amortized cost | 48,472 |  | 48,472 |  | 48,442
Unrealized gains | 0 |  | 0 |  | 0
Unrealized losses | (5,067) |  | (5,067) |  | (7,466)
Estimated fair value | $ 43,405 |  | $ 43,405 |  | $ 40,976
Loss on the write-off of an AFS debt security |  |  |  | $ 5,000 |

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