Parent Company Financial Information - Statements of Financial Condition (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Condensed Financial Information Disclosure [Abstract]
Percentage of capital stock of the Bank held (as a percent)	100.00%
Assets
Cash and cash equivalents	$ 609,330	$ 936,473
Other assets	301,295	368,996
Total assets	17,903,585	19,026,645
Liabilities
Subordinated debentures	272,449	331,842
Accrued expenses and other liabilities	211,691	216,596
Total liabilities	14,947,842	16,144,064
Total stockholders’ equity	2,955,743	2,882,581	$ 2,798,389	$ 2,886,311
Total liabilities and stockholders’ equity	17,903,585	19,026,645
Corporation
Assets
Cash and cash equivalents	82,098	72,696
Investment in subsidiaries	3,144,890	3,145,886
Other assets	3,183	5,180
Total assets	3,230,171	3,223,762
Liabilities
Subordinated debentures	272,449	331,842
Accrued expenses and other liabilities	1,979	9,339
Total liabilities	274,428	341,181
Total stockholders’ equity	2,955,743	2,882,581
Total liabilities and stockholders’ equity	$ 3,230,171	$ 3,223,762