Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021	Mar. 31, 2021
Statement of Financial Position [Abstract]
Securities, Available-for-sale, Amortized Cost	$ 6,767,967	$ 6,447,510	$ 4,961,438
Loans held-for-sale, fair value	$ 22,382	$ 34,122	$ 61,511
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	142,704,495	142,532,116	142,285,611
Treasury stock, shares	936,847	936,897	938,004