Loans and Allowance for Credit Losses (Composition of Nonaccrual Loans and Without an Allowance for Loan Loss by Portfolio Class) (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Nonaccrual	$ 82,082	$ 59,036
Nonaccrual without allowance for loan loss	37,176	13,637
Total Commercial [Member] | Commercial Real Estate - Income Producing [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Nonaccrual	24,066	461
Nonaccrual without allowance for loan loss	23,436
Total Commercial [Member] | Construction and Land Development [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Nonaccrual	2,228	815
Nonaccrual without allowance for loan loss	928
Residential Mortgages [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Nonaccrual	25,924	26,137
Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Nonaccrual	10,180	8,555
Nonaccrual without allowance for loan loss	818
Total Commercial And Industrial [Member] | Total Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Nonaccrual	19,684	23,068
Nonaccrual without allowance for loan loss	11,994	13,637
Total Commercial And Industrial [Member] | Total Commercial [Member] | Commercial Non-Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Nonaccrual	17,487	20,840
Nonaccrual without allowance for loan loss	11,255	13,637
Total Commercial And Industrial [Member] | Total Commercial [Member] | Commercial Real Estate - Owner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Nonaccrual	2,197	$ 2,228
Nonaccrual without allowance for loan loss	$ 739