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Loans and Allowance for Credit Losses (Troubled Debt Restructurings Modified by Portfolio Class) (Details) $ in Thousands | 3 Months Ended
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Mar. 31, 2022 USD ($) Contract | Mar. 31, 2021 USD ($) Contract
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | Contract | 4 | 5
Pre-Modification Outstanding Recorded Investment | $ 183 | $ 7,199
Post-Modification Outstanding Recorded Investment | $ 188 | $ 7,199
Residential Mortgages [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | Contract | 2 | 1
Pre-Modification Outstanding Recorded Investment | $ 110 | $ 210
Post-Modification Outstanding Recorded Investment | $ 115 | $ 210
Consumer [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | Contract | 2 | 1
Pre-Modification Outstanding Recorded Investment | $ 73 | $ 54
Post-Modification Outstanding Recorded Investment | $ 73 | $ 54
Total Commercial And Industrial [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | Contract |  | 3
Pre-Modification Outstanding Recorded Investment |  | $ 6,935
Post-Modification Outstanding Recorded Investment |  | $ 6,935
Total Commercial And Industrial [Member] | Commercial Non-Real Estate [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | Contract |  | 3
Pre-Modification Outstanding Recorded Investment |  | $ 6,935
Post-Modification Outstanding Recorded Investment |  | $ 6,935

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