CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
CONSOLIDATED BALANCE SHEETS
Available-for-sale investment securities, amortized cost	$ 2,097,906	$ 2,190,448
Investment securities held-to-maturity	$ 3,230,698	$ 3,262,509
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, authorized (in shares)	300,000,000	300,000,000
Common stock, issued (in shares)	142,173,027	141,748,847
Common stock outstanding (in shares)	124,683,544	126,422,898
Common stock repurchased (in shares)	17,489,483	15,325,949