Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021	Sep. 30, 2021
Statement of Financial Position [Abstract]
Securities, Available-for-sale, Amortized Cost	$ 6,546,471	$ 6,447,510	$ 5,981,374
Loans held-for-sale, fair value	$ 15,892	$ 34,122	$ 46,081
Common stock, par value	$ 0.01	$ 0.01	$ 0.01
Common stock, shares authorized	200,000,000	200,000,000	200,000,000
Common stock, shares issued	142,628,163	142,532,116	142,467,687
Treasury stock, shares	933,152	936,897	937,803