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Loans (Recorded Investment In Nonaccrual Restructured And Loans Past Due 90 Days Or More And Accruing) (Details) - USD ($) $ in Thousands | Mar. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Financing Receivable, Recorded Investment [Line Items] |  |
Nonaccrual loans | $ 66,151 | $ 72,056
Accruing restructured loans | 18,757 | 20,177
Loans past due 90 days or more and accruing | 1,406 | 1,845
Total nonperforming loans | 86,314 | 94,078
Commercial Financial And Agricultural [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Nonaccrual loans | 25,985 | 16,773
Accruing restructured loans | 1,088 | 1,291
Loans past due 90 days or more and accruing | 0 |
Total nonperforming loans | 27,073 | 18,064
Construction Real Estate Commercial [Domain] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Nonaccrual loans | 960 | 986
Accruing restructured loans | 433 | 338
Loans past due 90 days or more and accruing | 0 | 0
Total nonperforming loans | 1,393 | 1,324
Construction Real Estate - Mortgage [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Nonaccrual loans | 0 | 8
Accruing restructured loans | 16 | 92
Loans past due 90 days or more and accruing | 0 | 0
Total nonperforming loans | 16 | 100
Construction Real Estate - Installment [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Nonaccrual loans | 43 | 52
Accruing restructured loans | 6 | 0
Loans past due 90 days or more and accruing | 0 | 0
Total nonperforming loans | 49 | 52
Residential Real Estate - Commercial [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Nonaccrual loans | 2,674 | 18,835
Accruing restructured loans | 222 | 224
Loans past due 90 days or more and accruing | 0 |
Total nonperforming loans | 2,896 | 19,059
Residential Real Estate - Mortgage [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Nonaccrual loans | 16,856 | 16,841
Accruing restructured loans | 10,022 | 10,766
Loans past due 90 days or more and accruing | 669 | 568
Total nonperforming loans | 27,547 | 28,175
Residential Real Estate - HELOC [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Nonaccrual loans | 1,482 | 1,593
Accruing restructured loans | 882 | 1,025
Loans past due 90 days or more and accruing | 47 | 14
Total nonperforming loans | 2,411 | 2,632
Residential Real Estate - Installment [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Nonaccrual loans | 527 | 586
Accruing restructured loans | 695 | 616
Loans past due 90 days or more and accruing | 0 | 7
Total nonperforming loans | 1,222 | 1,209
Commercial Real Estate [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Nonaccrual loans | 14,213 | 12,979
Accruing restructured loans | 4,770 | 5,163
Loans past due 90 days or more and accruing | 0 |
Total nonperforming loans | 18,983 | 18,142
Consumer [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Nonaccrual loans | 3,411 | 3,403
Accruing restructured loans | 623 | 662
Loans past due 90 days or more and accruing | 690 | 1,256
Total nonperforming loans | $ 4,724 | $ 5,321

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- Definition Reflects the recorded investment in nonaccrual loans, renegotiated loans not currently on nonaccrual, and loans which are contractually past due 90 days or more but whose interest continues to accrue. + References No definition available. + Details
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- Definition The amount of the outstanding recorded investment related to financing receivables that have been modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 40 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=82895541&loc=d3e18845-111554 + Details
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