Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022	Mar. 31, 2022
Statement of Financial Position [Abstract]
Securities, Available-for-sale, Amortized Cost	$ 5,879,040	$ 6,152,348	$ 6,767,967
Loans held-for-sale, fair value	$ 11,766	$ 10,497	$ 22,382
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	142,703,531	142,657,871	142,704,495
Treasury stock, shares	927,789	929,210	936,847