Loans and Allowance for Credit Losses (Composition of Nonaccrual Loans and Without an Allowance for Loan Loss by Portfolio Class) (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Nonaccrual	$ 113,681	$ 106,870
Nonaccrual without allowance for loan loss	23,756	14,883
Total Commercial [Member] \| Commercial Real Estate - Income Producing [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Nonaccrual	2,301	4,760
Nonaccrual without allowance for loan loss	1,635	5,114
Total Commercial [Member] \| Construction and Land Development [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Nonaccrual	1,165	3,173
Nonaccrual without allowance for loan loss	0	2,178
Residential Mortgages [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Nonaccrual	51,508	46,986
Nonaccrual without allowance for loan loss	4,516	2,511
Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Nonaccrual	11,550	10,703
Nonaccrual without allowance for loan loss	998	316
Total Commercial And Industrial [Member] \| Total Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Nonaccrual	47,157	41,248
Nonaccrual without allowance for loan loss	16,607	4,764
Total Commercial And Industrial [Member] \| Total Commercial [Member] \| Commercial Non-Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Nonaccrual	40,205	34,525
Nonaccrual without allowance for loan loss	14,293	3,294
Total Commercial And Industrial [Member] \| Total Commercial [Member] \| Commercial Real Estate - Owner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Nonaccrual	6,952	6,723
Nonaccrual without allowance for loan loss	$ 2,314	$ 1,470