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Loans and Allowance for Loan Losses (Details 7) - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Summary of key information for impaired loans |  |
Unpaid Principal Balance | $ 17,086 | $ 15,542
Impaired loans | 12,446 | 11,157
Impaired loans with related allowance for loan losses | 7,990 | 7,492
Related allowance for loan losses | 3,677 | 2,644
Commercial [Member] |  |
Summary of key information for impaired loans |  |
Unpaid Principal Balance | 12,843 | 13,221
Impaired loans | 8,664 | 8,867
Impaired loans with related allowance for loan losses | 5,103 | 5,472
Related allowance for loan losses | 1,990 | 1,874
Commercial [Member] | Owner occupied RE [Member] |  |
Summary of key information for impaired loans |  |
Unpaid Principal Balance | 2,281 | 2,284
Impaired loans | 2,235 | 2,243
Impaired loans with related allowance for loan losses | 464 | 2,224
Related allowance for loan losses | 179 | 263
Commercial [Member] | Business [Member] |  |
Summary of key information for impaired loans |  |
Unpaid Principal Balance | 3,735 | 3,699
Impaired loans | 2,764 | 2,593
Impaired loans with related allowance for loan losses | 1,993 | 1,610
Related allowance for loan losses | 1,061 | 1,154
Commercial [Member] | Non-owner occupied RE [Member] |  |
Summary of key information for impaired loans |  |
Unpaid Principal Balance | 6,827 | 7,238
Impaired loans | 3,665 | 4,031
Impaired loans with related allowance for loan losses | 2,646 | 1,638
Related allowance for loan losses | 750 | 457
Commercial [Member] | Construction [Member] |  |
Summary of key information for impaired loans |  |
Unpaid Principal Balance |  |
Impaired loans |  |
Impaired loans with related allowance for loan losses |  |
Related allowance for loan losses |  |
Consumer [Member] |  |
Summary of key information for impaired loans |  |
Unpaid Principal Balance | 4,243 | 2,321
Impaired loans | 3,782 | 2,290
Impaired loans with related allowance for loan losses | 2,887 | 2,020
Related allowance for loan losses | 1,687 | 770
Consumer [Member] | Other [Member] |  |
Summary of key information for impaired loans |  |
Unpaid Principal Balance | 171 | 261
Impaired loans | 170 | 190
Impaired loans with related allowance for loan losses | 170 | 177
Related allowance for loan losses | 22 | 88
Consumer [Member] | Real estate [Member] |  |
Summary of key information for impaired loans |  |
Unpaid Principal Balance | 2,062 | 1,853
Impaired loans | 2,037 | 1,843
Impaired loans with related allowance for loan losses | 2,037 | 1,843
Related allowance for loan losses | 1,379 | 682
Consumer [Member] | Home equity [Member] |  |
Summary of key information for impaired loans |  |
Unpaid Principal Balance | 2,010 | 207
Impaired loans | 1,575 | 257
Impaired loans with related allowance for loan losses | 680 |
Related allowance for loan losses | 286 |
Consumer [Member] | Construction [Member] |  |
Summary of key information for impaired loans |  |
Unpaid Principal Balance |  |
Impaired loans |  |
Impaired loans with related allowance for loan losses |  |
Related allowance for loan losses |  |

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