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v3.25.3

Securities, Available-for-sale Securities (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Available-for-sale [Abstract] |  |
Amortized cost | $ 1,132,569 | $ 1,186,649
Gross unrealized gains | 1,121 | 237
Gross unrealized losses | (95,725) | (131,158)
Fair value | 1,037,965 | 1,055,728
Accrued interest receivable on available-for-sale debt securities | 4,000 | 4,600
U.S. Treasury and Government Agencies [Member] |  |
Available-for-sale [Abstract] |  |
Amortized cost | 244,685 | 360,027
Gross unrealized gains | 62 | 84
Gross unrealized losses | (10,134) | (18,616)
Fair value | 234,613 | 341,495
State and Political Subdivisions [Member] |  |
Available-for-sale [Abstract] |  |
Amortized cost | 302,981 | 304,588
Gross unrealized gains | 110 | 12
Gross unrealized losses | (39,362) | (51,043)
Fair value | 263,729 | 253,557
Agency Mortgage-backed Securities [Member] |  |
Available-for-sale [Abstract] |  |
Amortized cost | 554,330 | 471,000
Gross unrealized gains | 900 | 131
Gross unrealized losses | (46,131) | (61,422)
Fair value | 509,099 | 409,709
Asset-backed Securities [Member] |  |
Available-for-sale [Abstract] |  |
Amortized cost | 30,573 | 51,034
Gross unrealized gains | 49 | 10
Gross unrealized losses | (98) | (77)
Fair value | $ 30,524 | $ 50,967

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