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Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
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Statement of Financial Position [Abstract] |  |
Securities available for sale, amortized cost | $ 6,203,454 | $ 5,774,133
Securities held to maturity, fair value | 2,064,591 | 2,233,526
Loans held-for-sale, fair value | 33,161 | 18,929
Property and equipment, accumulated depreciation | 365,542 | 345,962
Right of use assets, accumulated amortization | $ 71,153 | $ 67,063
Preferred stock, par value per share | $ 20 | $ 20
Common stock, par value per share | $ 3.33 | $ 3.33

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