Parent Company Financial Information - Statements of Financial Condition (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Condensed Financial Information Disclosure [Abstract]
Percentage of capital stock of the Bank held	100.00%
Assets
Other assets	$ 253,871	$ 260,204
Total assets	21,688,017	21,094,429
Liabilities
Subordinated debentures	331,204	330,567
Accrued expenses and other liabilities	206,023	203,962
Total liabilities	18,889,628	18,208,118
Total stockholders’ equity	2,798,389	2,886,311	$ 2,746,649	$ 2,012,594
Total liabilities and stockholders’ equity	21,688,017	21,094,429
Corporation
Assets
Cash and cash equivalents	17,712	27,483
Investment in subsidiaries	3,118,313	3,194,399
Other assets	1,214	8,294
Total assets	3,137,239	3,230,176
Liabilities
Other borrowings	0	8,000
Subordinated debentures	331,204	330,567
Accrued expenses and other liabilities	7,646	5,298
Total liabilities	338,850	343,865
Total stockholders’ equity	2,798,389	2,886,311
Total liabilities and stockholders’ equity	$ 3,137,239	$ 3,230,176