Condensed Financial Information Of Parent Company Condensed Financial Information Of Parent Company (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Condensed Financial Statements, Captions [Line Items]
Other assets	$ 884,762	$ 913,954
Assets	34,797,442	33,542,864
Borrowings (including $113,634 and $118,838 at fair value, respectively)	2,063,819	1,391,814
Total liabilities	31,256,165	30,042,915
Stockholders' Equity Attributable to Parent Only	3,541,277	3,499,949	$ 3,390,765	$ 3,950,531
Total liabilities and stockholders' equity	34,797,442	33,542,864
Parent [Member]
Condensed Financial Statements, Captions [Line Items]
Cash	159,701	192,255
Investments In Consolidated Banking Subsidiaries	3,513,121	3,570,039
Other assets	92,584	134,799
Assets	3,765,406	3,897,093
Borrowings (including $113,634 and $118,838 at fair value, respectively)	0	172,976
Subordinated debt	216,369	214,709
Other Liabilities	7,760	9,459
Total liabilities	224,129	397,144
Stockholders' Equity Attributable to Parent Only	3,541,277	3,499,949
Total liabilities and stockholders' equity	$ 3,765,406	$ 3,897,093