Condensed Parent Company Financial Statements - Schedule of Statements of Financial Condition (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Assets
Cash and due from banks	$ 452,017	$ 423,404
Goodwill	796,942	656,672
Total assets	64,879,668	56,259,934	$ 52,949,649
Liabilities and Shareholders’ Equity
Subordinated notes	298,283	437,866
Other borrowings	534,803	645,813
Junior Subordinated Debentures	253,566	253,566
Shareholders’ equity	6,344,297	5,399,526	$ 4,796,838	$ 4,498,688
Total liabilities and shareholders’ equity	64,879,668	56,259,934
Reportable Legal Entities | Parent Company
Assets
Cash and due from banks	196,969	262,680
Available-for-sale debt securities and equity securities with readily determinable fair value	16,240	15,532
Investment in and receivable from subsidiaries	6,674,426	5,842,160
Goodwill	8,371	8,371
Other assets	371,284	364,623
Total assets	7,267,290	6,493,366
Liabilities and Shareholders’ Equity
Other liabilities	171,275	171,922
Subordinated notes	298,283	437,866
Other borrowings	199,869	230,486
Junior Subordinated Debentures	253,566	253,566
Shareholders’ equity	6,344,297	5,399,526
Total liabilities and shareholders’ equity	$ 7,267,290	$ 6,493,366