Loans and Allowance for Credit Losses (Composition of Nonaccrual Loans and Without an Allowance for Loan Loss by Portfolio Class) (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Nonaccrual	$ 106,870	$ 97,335
Nonaccrual without allowance for loan loss	14,883	12,957
Total Commercial [Member] | Commercial Real Estate - Income Producing [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Nonaccrual	4,760	356
Nonaccrual without allowance for loan loss	5,114
Total Commercial [Member] | Construction and Land Development [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Nonaccrual	3,173	5,561
Nonaccrual without allowance for loan loss	2,178	4,929
Residential Mortgages [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Nonaccrual	46,986	44,086
Nonaccrual without allowance for loan loss	2,511	1,475
Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Nonaccrual	10,703	11,187
Nonaccrual without allowance for loan loss	316	500
Total Commercial And Industrial [Member] | Total Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Nonaccrual	41,248	36,145
Nonaccrual without allowance for loan loss	4,764	6,053
Total Commercial And Industrial [Member] | Total Commercial [Member] | Commercial Non-Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Nonaccrual	34,525	33,418
Nonaccrual without allowance for loan loss	3,294	4,855
Total Commercial And Industrial [Member] | Total Commercial [Member] | Commercial Real Estate - Owner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Nonaccrual	6,723	2,727
Nonaccrual without allowance for loan loss	$ 1,470	$ 1,198