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Loans and Asset Quality Information (Schedule of Accruing Restructured Loans Defaulted in Period) (Details) $ in Thousands | 3 Months Ended
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Mar. 31, 2017 USD ($) | Mar. 31, 2016 USD ($)
All Total Loans [Member] |  |
Accruing restructured loans that defaulted in the period: |  |
Number of Contracts - Subsequent Default | 1 | 2
Subsequently defaulted - Recorded Investment | $ 626 | $ 65
All Total Loans [Member] | Commercial, financial, and agricultural [Member] |  |
Accruing restructured loans that defaulted in the period: |  |
Number of Contracts - Subsequent Default |  | 1
Subsequently defaulted - Recorded Investment |  | $ 44
All Total Loans [Member] | Real estate - mortgage - residential (1-4 family) first mortgages [Member] |  |
Accruing restructured loans that defaulted in the period: |  |
Number of Contracts - Subsequent Default | 1 |
Subsequently defaulted - Recorded Investment | $ 626 |
All Total Loans [Member] | Real estate mortgage commercial and other [Member] |  |
Accruing restructured loans that defaulted in the period: |  |
Number of Contracts - Subsequent Default |  | 1
Subsequently defaulted - Recorded Investment |  | $ 21
Covered [Member] |  |
Accruing restructured loans that defaulted in the period: |  |
Number of Contracts - Subsequent Default |  | 1
Subsequently defaulted - Recorded Investment |  | $ 44

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- Definition Number of financing receivables that have been modified by troubled debt restructurings within the previous 12 months and for which there was a payment default within the period. + References No definition available. + Details
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