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Loans and Allowance for Credit Losses (Composition of Nonaccrual Loans and Without an Allowance for Loan Loss by Portfolio Class) (Details) - USD ($) $ in Thousands | Sep. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Nonaccrual | $ 60,331 | $ 38,991
Nonaccrual without allowance for loan loss | 15,413 | 4,691
Total Commercial [Member] | Commercial Real Estate - Income Producing [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Nonaccrual | 344 | 1,240
Nonaccrual without allowance for loan loss |  | 1,174
Total Commercial [Member] | Construction and Land Development [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Nonaccrual | 742 | 309
Residential Mortgages [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Nonaccrual | 26,905 | 25,269
Nonaccrual without allowance for loan loss |  | 1,884
Consumer [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Nonaccrual | 7,800 | 6,692
Total Commercial And Industrial [Member] | Total Commercial [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Nonaccrual | 24,540 | 5,481
Nonaccrual without allowance for loan loss | 15,413 | 1,633
Total Commercial And Industrial [Member] | Total Commercial [Member] | Commercial Non-Real Estate [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Nonaccrual | 22,108 | 4,020
Nonaccrual without allowance for loan loss | 15,413 | 941
Total Commercial And Industrial [Member] | Total Commercial [Member] | Commercial Real Estate - Owner Occupied [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Nonaccrual | $ 2,432 | 1,461
Nonaccrual without allowance for loan loss |  | $ 692

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