Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022	Jun. 30, 2022
Statement of Financial Position [Abstract]
Securities, Available-for-sale, Amortized Cost	$ 5,687,352	$ 6,152,348	$ 6,722,336
Loans held-for-sale, fair value	$ 18,089	$ 10,497	$ 23,848
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	142,741,196	142,657,871	142,586,601
Treasury stock, shares	927,608	929,210	937,924