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v3.23.3

Securities, Available-for-sale Securities (Details) - USD ($) $ in Thousands | Sep. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Available-for-sale [Abstract] |  |
Amortized cost | $ 1,324,139 | $ 1,430,605
Gross unrealized gains | 136 | 245
Gross unrealized losses | (188,397) | (174,624)
Fair value | 1,135,878 | 1,256,226
U.S. Treasury and Government Agencies [Member] |  |
Available-for-sale [Abstract] |  |
Amortized cost | 387,012 | 418,579
Gross unrealized gains | 135 | 212
Gross unrealized losses | (35,808) | (36,859)
Fair value | 351,339 | 381,932
State and Political Subdivisions [Member] |  |
Available-for-sale [Abstract] |  |
Amortized cost | 313,867 | 326,746
Gross unrealized gains | 1 | 32
Gross unrealized losses | (69,390) | (61,676)
Fair value | 244,478 | 265,102
U.S. Government Sponsored Agency Mortgage-backed Securities [Member] |  |
Available-for-sale [Abstract] |  |
Amortized cost | 534,442 | 593,917
Gross unrealized gains | 0 | 1
Gross unrealized losses | (82,144) | (73,833)
Fair value | 452,298 | 520,085
Asset-backed Securities [Member] |  |
Available-for-sale [Abstract] |  |
Amortized cost | 88,818 | 91,363
Gross unrealized gains | 0 | 0
Gross unrealized losses | (1,055) | (2,256)
Fair value | $ 87,763 | $ 89,107

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