Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Statement of Financial Position [Abstract]
Securities held to maturity	$ 976,690	$ 1,002,544
Amortized cost	$ 2,599,397	$ 968,927
Preferred stock, par value (in usd per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	5,000,000	5,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in usd per share)	$ 5.00	$ 5.00
Common stock, shares authorized (in shares)	250,000,000	150,000,000
Common stock, shares issued (in shares)	97,722,397	66,484,225
Common stock, shares outstanding (in shares)	95,020,881	63,565,690
Treasury stock (in shares)	2,701,516	2,918,535