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Investment Securities -Summary of Investment Securities by Contractual Maturity (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Schedule of Available-for-sale Securities |  |  |
Debt securities, maturing within 1 year, amortized cost |  | $ 8,038 |
Debt securities, maturing 1 to 5 years, amortized cost |  | 85,605 |
Debt securities, maturing 5 to 10 years, amortized cost |  | 230,388 |
Debt securities, maturing over 10 years, amortized cost |  | 754,672 |
Amortized Cost |  | 1,078,703 | $ 1,229,382
Debt securities, maturing within 1 year, fair value |  | 7,987 |
Debt securities, maturing 1 to 5 years, fair value |  | 80,271 |
Debt securities, maturing 5 to 10 years, fair value |  | 214,124 |
Debt securities, maturing over 10 years, fair value |  | 674,524 |
Debt securities | [1] | $ 976,906 | 1,083,555
Available-for-sale securities, maturing within 1 year, weighted average yield |  | 2.48% |
Available-for-sale securities, maturing 1 to 5 years, weighted average yield |  | 2.02% |
Available-for-sale securities, maturing 5 to 10 years, weighted average yield |  | 2.94% |
Available-for-sale securities, maturing over 10 years, weighted average yield |  | 2.76% |
Available-for-sale securities, total weighted average yield |  | 2.74% |
U.S. Treasury and government agencies |  |  |
Schedule of Available-for-sale Securities |  |  |
Debt securities, maturing within 1 year, amortized cost |  | $ 262 |
Debt securities, maturing 1 to 5 years, amortized cost |  | 845 |
Debt securities, maturing 5 to 10 years, amortized cost |  | 11,227 |
Debt securities, maturing over 10 years, amortized cost |  | 5,248 |
Amortized Cost |  | 17,582 | 15,317
Debt securities, maturing within 1 year, fair value |  | 261 |
Debt securities, maturing 1 to 5 years, fair value |  | 848 |
Debt securities, maturing 5 to 10 years, fair value |  | 11,330 |
Debt securities, maturing over 10 years, fair value |  | 5,257 |
Debt securities |  | 17,696 | 15,196
U.S. government sponsored agencies |  |  |
Schedule of Available-for-sale Securities |  |  |
Debt securities, maturing within 1 year, amortized cost |  | 1,496 |
Debt securities, maturing 1 to 5 years, amortized cost |  | 32,513 |
Debt securities, maturing 5 to 10 years, amortized cost |  | 77,020 |
Debt securities, maturing over 10 years, amortized cost |  | 60,153 |
Amortized Cost |  | 171,182 | 224,167
Debt securities, maturing within 1 year, fair value |  | 1,480 |
Debt securities, maturing 1 to 5 years, fair value |  | 29,996 |
Debt securities, maturing 5 to 10 years, fair value |  | 74,278 |
Debt securities, maturing over 10 years, fair value |  | 58,378 |
Debt securities |  | 164,132 | 209,083
States and political subdivisions |  |  |
Schedule of Available-for-sale Securities |  |  |
Debt securities, maturing within 1 year, amortized cost |  | 5,645 |
Debt securities, maturing 1 to 5 years, amortized cost |  | 42,732 |
Debt securities, maturing 5 to 10 years, amortized cost |  | 71,598 |
Debt securities, maturing over 10 years, amortized cost |  | 88,530 |
Amortized Cost |  | 208,505 | 225,074
Debt securities, maturing within 1 year, fair value |  | 5,611 |
Debt securities, maturing 1 to 5 years, fair value |  | 40,371 |
Debt securities, maturing 5 to 10 years, fair value |  | 63,300 |
Debt securities, maturing over 10 years, fair value |  | 77,540 |
Debt securities |  | 186,822 | 196,301
Residential mortgage-backed securities |  |  |
Schedule of Available-for-sale Securities |  |  |
Debt securities, maturing within 1 year, amortized cost |  | 0 |
Debt securities, maturing 1 to 5 years, amortized cost |  | 1,588 |
Debt securities, maturing 5 to 10 years, amortized cost |  | 43,604 |
Debt securities, maturing over 10 years, amortized cost |  | 582,769 |
Amortized Cost |  | 627,961 | 693,886
Debt securities, maturing within 1 year, fair value |  | 0 |
Debt securities, maturing 1 to 5 years, fair value |  | 1,536 |
Debt securities, maturing 5 to 10 years, fair value |  | 41,534 |
Debt securities, maturing over 10 years, fair value |  | 518,447 |
Debt securities |  | 561,517 | 601,802
Commercial mortgage-backed securities |  |  |
Schedule of Available-for-sale Securities |  |  |
Debt securities, maturing within 1 year, amortized cost |  | 635 |
Debt securities, maturing 1 to 5 years, amortized cost |  | 6,427 |
Debt securities, maturing 5 to 10 years, amortized cost |  | 23,939 |
Debt securities, maturing over 10 years, amortized cost |  | 17,972 |
Amortized Cost |  | 48,973 | 64,438
Debt securities, maturing within 1 year, fair value |  | 635 |
Debt securities, maturing 1 to 5 years, fair value |  | 6,049 |
Debt securities, maturing 5 to 10 years, fair value |  | 20,924 |
Debt securities, maturing over 10 years, fair value |  | 14,902 |
Debt securities |  | 42,510 | 55,065
Bank-issued trust preferred securities |  |  |
Schedule of Available-for-sale Securities |  |  |
Debt securities, maturing within 1 year, amortized cost |  | 0 |
Debt securities, maturing 1 to 5 years, amortized cost |  | 1,500 |
Debt securities, maturing 5 to 10 years, amortized cost |  | 3,000 |
Debt securities, maturing over 10 years, amortized cost |  | 0 |
Amortized Cost |  | 4,500 | 6,500
Debt securities, maturing within 1 year, fair value |  | 0 |
Debt securities, maturing 1 to 5 years, fair value |  | 1,471 |
Debt securities, maturing 5 to 10 years, fair value |  | 2,758 |
Debt securities, maturing over 10 years, fair value |  | 0 |
Debt securities |  | $ 4,229 | $ 6,108
[1] | Available-for-sale investment securities and held-to-maturity investment securities are presented net of allowance for credit losses of $0 and $237, respectively, at both September 30, 2025 and December 31, 2024.

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