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Loans and Asset Quality Information (Schedule of Accruing Restructured Loans Defaulted in Period) (Details) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2016 USD ($) | Sep. 30, 2015 USD ($) | Sep. 30, 2016 USD ($) | Sep. 30, 2015 USD ($)
All Total Loans [Member] |  |  |  |
Accruing restructured loans that defaulted in the period: |  |  |  |
Number of Contracts - Subsequent Default |  | 1 | 2 | 3
Subsequently defaulted - Recorded Investment |  | $ 152 | $ 65 | $ 193
All Total Loans [Member] | Commercial, financial, and agricultural [Member] |  |  |  |
Accruing restructured loans that defaulted in the period: |  |  |  |
Number of Contracts - Subsequent Default |  |  | 1 | 1
Subsequently defaulted - Recorded Investment |  |  | $ 44 | $ 7
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 |  | 2
Subsequently defaulted - Recorded Investment |  | $ 152 |  | $ 186
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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