Loans and Allowance for Credit Losses Summary Of Gross Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	$ 24,176,075	$ 21,351,094
Real estate - commercial mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Net loans	9,493,479	8,127,728
Total	9,493,479	8,127,728
Commercial and Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Net loans	4,914,734	4,545,552
Total	4,914,734	4,545,552
Financing receivable, unearned income	2	41
Real estate - residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Net loans	6,302,624	5,325,923
Total	6,302,624	5,325,923
Real estate - home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Net loans	1,144,402	1,047,184
Total	1,144,402	1,047,184
Real-estate - construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Net loans	1,332,954	1,239,075
Total	1,332,954	1,239,075
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Net loans	651,717	729,318
Total	651,717	729,318
Leases and other loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Net loans	336,165	336,314
Total	336,165	336,314
Financing receivable, unearned income	$ 34,800	$ 38,000