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Loans (Loans Individually And Collectively Evaluated For Impairment) (Details) - USD ($) $ in Thousands | Mar. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Financing Receivable, Impaired [Line Items] |  |
Nonaccrual and accruing restructured loans | $ 117,772 | $ 111,378
Nonaccrual and accruing restructured loans, loans individually evaluated for impairment | 85,851 | 77,491
Nonaccrual and accruing restructured loans, loans collectively evaluated for impairment | 31,921 | 33,887
Commercial Financial And Agricultural [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Nonaccrual and accruing restructured loans | 29,554 | 33,125
Nonaccrual and accruing restructured loans, loans individually evaluated for impairment | 29,542 | 33,088
Nonaccrual and accruing restructured loans, loans collectively evaluated for impairment | 12 | 37
Construction Real Estate Commercial [Domain] |  |
Financing Receivable, Impaired [Line Items] |  |
Nonaccrual and accruing restructured loans | 452 | 453
Nonaccrual and accruing restructured loans, loans individually evaluated for impairment | 452 | 453
Nonaccrual and accruing restructured loans, loans collectively evaluated for impairment | 0 | 0
Construction Real Estate - Mortgage [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Nonaccrual and accruing restructured loans | 113 | 109
Nonaccrual and accruing restructured loans, loans individually evaluated for impairment | 0 | 0
Nonaccrual and accruing restructured loans, loans collectively evaluated for impairment | 113 | 109
Construction Real Estate - Installment [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Nonaccrual and accruing restructured loans | 18 | 77
Nonaccrual and accruing restructured loans, loans individually evaluated for impairment | 0 | 0
Nonaccrual and accruing restructured loans, loans collectively evaluated for impairment | 18 | 77
Residential Real Estate Commercial [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Nonaccrual and accruing restructured loans | 5,581 | 2,025
Nonaccrual and accruing restructured loans, loans individually evaluated for impairment | 5,581 | 2,025
Nonaccrual and accruing restructured loans, loans collectively evaluated for impairment | 0 | 0
Residential Real Estate - Mortgage [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Nonaccrual and accruing restructured loans | 23,189 | 24,097
Nonaccrual and accruing restructured loans, loans individually evaluated for impairment | 0 | 0
Nonaccrual and accruing restructured loans, loans collectively evaluated for impairment | 23,189 | 24,097
Residential Real Estate - HELOC [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Nonaccrual and accruing restructured loans | 2,597 | 3,072
Nonaccrual and accruing restructured loans, loans individually evaluated for impairment | 0 | 0
Nonaccrual and accruing restructured loans, loans collectively evaluated for impairment | 2,597 | 3,072
Residential Real Estate - Installment [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Nonaccrual and accruing restructured loans | 2,372 | 2,426
Nonaccrual and accruing restructured loans, loans individually evaluated for impairment | 0 | 0
Nonaccrual and accruing restructured loans, loans collectively evaluated for impairment | 2,372 | 2,426
Commercial Real Estate [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Nonaccrual and accruing restructured loans | 50,147 | 41,791
Nonaccrual and accruing restructured loans, loans individually evaluated for impairment | 50,147 | 41,791
Nonaccrual and accruing restructured loans, loans collectively evaluated for impairment | 0 | 0
Consumer [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Nonaccrual and accruing restructured loans | 3,620 | 4,069
Nonaccrual and accruing restructured loans, loans collectively evaluated for impairment | 3,620 | 4,069
Finance Leases Portfolio Segment [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Nonaccrual and accruing restructured loans | 129 | 134
Nonaccrual and accruing restructured loans, loans individually evaluated for impairment | $ 129 | $ 134

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