Parent Holding Company Information (Condensed) - Condensed Statements of Financial Condition (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Assets
Cash on hand and in banks	$ 268,746	$ 246,525
Interest bearing cash deposits	579,662	1,107,817
Cash and cash equivalents	848,408	1,354,342
Other assets	326,040	201,132
Total assets	27,902,987	27,742,629
Liabilities and Stockholders’ Equity
Dividends payable	388	370	$ 346
Subordinated debentures	133,105	132,943
Other liabilities	304,592	225,786
Total liabilities	24,679,133	24,722,348
Common stock	1,134	1,109
Paid-in capital	2,448,758	2,350,104
Retained earnings	1,083,258	1,043,181
Accumulated other comprehensive loss	(309,296)	(374,113)
Total stockholders’ equity	3,223,854	3,020,281	$ 2,843,305	$ 3,177,622
Total liabilities and stockholders’ equity	27,902,987	27,742,629
Parent Company
Assets
Cash on hand and in banks	11,099	15,499
Interest bearing cash deposits	162,208	85,319
Cash and cash equivalents	173,307	100,818
Other assets	16,871	18,206
Investment in subsidiaries	3,177,785	3,043,852
Total assets	3,367,963	3,162,876
Liabilities and Stockholders’ Equity
Dividends payable	613	579
Subordinated debentures	133,105	132,943
Other liabilities	10,391	9,073
Total liabilities	144,109	142,595
Common stock	1,134	1,109
Paid-in capital	2,448,758	2,350,104
Retained earnings	1,083,258	1,043,181
Accumulated other comprehensive loss	(309,296)	(374,113)
Total stockholders’ equity	3,223,854	3,020,281
Total liabilities and stockholders’ equity	$ 3,367,963	$ 3,162,876