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Loans and Allowance for Loan Losses (Details 4) - USD ($) $ in Thousands | Jun. 30, 2018 | Dec. 31, 2017
--- | --- | ---
Financing Receivable, Impaired [Line Items] |  |
Recorded Investment, With no related allowance recorded | $ 3,334 | $ 2,433
Unpaid Principal Balance, With no related allowance recorded | 3,477 | 2,528
Recorded Investment, With an allowance recorded | 6,917 | 7,923
Unpaid Principal Balance, With an allowance recorded | 7,481 | 8,370
Specific Reserves, With an allowance recorded | 1,282 | 1,333
Total impaired loans, Recorded Investment | 10,251 | 10,356
Total impaired loans, Unpaid Principal Balance | 10,958 | 10,898
Commercial, financial, and agricultural |  |
Financing Receivable, Impaired [Line Items] |  |
Recorded Investment, With no related allowance recorded | 1,282 | 1,393
Unpaid Principal Balance, With no related allowance recorded | 1,351 | 1,445
Recorded Investment, With an allowance recorded | 1,605 | 1,614
Unpaid Principal Balance, With an allowance recorded | 1,927 | 1,834
Specific Reserves, With an allowance recorded | 410 | 500
Residential Real Estate |  |
Financing Receivable, Impaired [Line Items] |  |
Recorded Investment, With no related allowance recorded | 993 | 674
Unpaid Principal Balance, With no related allowance recorded | 1,048 | 688
Recorded Investment, With an allowance recorded | 4,193 | 4,398
Unpaid Principal Balance, With an allowance recorded | 4,287 | 4,500
Specific Reserves, With an allowance recorded | 668 | 521
Residential Real Estate | Construction |  |
Financing Receivable, Impaired [Line Items] |  |
Recorded Investment, With no related allowance recorded | 0 |
Unpaid Principal Balance, With no related allowance recorded | 0 |
Recorded Investment, With an allowance recorded | 0 |
Unpaid Principal Balance, With an allowance recorded | 0 |
Specific Reserves, With an allowance recorded | 0 |
Real estate - commercial |  |
Financing Receivable, Impaired [Line Items] |  |
Recorded Investment, With no related allowance recorded | 753 | 366
Unpaid Principal Balance, With no related allowance recorded | 753 | 395
Recorded Investment, With an allowance recorded | 952 | 1,638
Unpaid Principal Balance, With an allowance recorded | 1,078 | 1,743
Specific Reserves, With an allowance recorded | 185 | 243
Real estate - commercial | Construction |  |
Financing Receivable, Impaired [Line Items] |  |
Recorded Investment, With no related allowance recorded | 169 |
Unpaid Principal Balance, With no related allowance recorded | 188 |
Recorded Investment, With an allowance recorded |  | 97
Unpaid Principal Balance, With an allowance recorded |  | 97
Specific Reserves, With an allowance recorded |  | 48
Consumer |  |
Financing Receivable, Impaired [Line Items] |  |
Recorded Investment, With no related allowance recorded | 137 |
Unpaid Principal Balance, With no related allowance recorded | 137 |
Recorded Investment, With an allowance recorded |  | 176
Unpaid Principal Balance, With an allowance recorded |  | 196
Specific Reserves, With an allowance recorded |  | $ 21
Installment and other consumer |  |
Financing Receivable, Impaired [Line Items] |  |
Recorded Investment, With an allowance recorded | 167 |
Unpaid Principal Balance, With an allowance recorded | 189 |
Specific Reserves, With an allowance recorded | $ 19 |

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