Consolidated Balance Sheets (Parenthetical) - USD ($)	Jun. 30, 2025	Dec. 31, 2024
Statement of Financial Position [Abstract]
Interest bearing deposits, banks	$ 754,275,000	$ 425,866,000
Held-to-maturity securities, fair values	$ 1,006,110,000	$ 1,006,817,000
Preferred stock, no par value
Preferred stock, shares authorized	1,000,000	1,000,000
Preferred stock, shares issued	150,000	150,000
Preferred stock, shares outstanding	150,000	150,000
6.75% non-cumulative perpetual preferred stock, Series A, liquidation preference	$ 150,000,000	$ 150,000,000
Common stock, par value	$ 2.0833	$ 2.0833
Common stock, shares authorized	200,000,000	200,000,000
Common stock, shares issued	95,986,023	75,354,034
Common stock, shares outstanding	95,986,023	66,919,805
Treasury stock, shares	0	8,434,229