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Loans and Allowance for Loan Losses (Details 5) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Commercial & Industrial [Member] |  |  |
Summary of Impaired loan activity |  |  |
With no related allowance recorded, Recorded Investment |  |  | $ 126
With no related allowance recorded, Unpaid Principal Balance |  |  | 1,214
With no related allowance recorded, Related Allowance |  |  |
With no related allowance recorded, Average Recorded Investment |  |  | 1,388
With no related allowance recorded, Interest Income Recognized |  |  |
With a specific allowance recorded, Recorded Investment |  | 50 |
With a specific allowance recorded, Unpaid Principal Balance |  | 50 |
With a specific allowance recorded, Related Allowance |  | 50 |
With a specific allowance recorded, Average Recorded Investment |  | 50 |
With a specific allowance recorded, Interest Income Recognized |  | 3 |
Total Recorded Investment |  | 50 | 126
Total Unpaid Principal Balance |  | 50 | 1,214
Total Related Allowance |  | 50 |
Total Average Recorded Investment |  | 50 | 1,388
Total Interest Income Recognized |  | 3 |
Commercial RE & Construction [Member] |  |  |
Summary of Impaired loan activity |  |  |
With no related allowance recorded, Recorded Investment | 696 | 637 | 1,110
With no related allowance recorded, Unpaid Principal Balance | 722 | 637 | 1,110
With no related allowance recorded, Related Allowance |  |  |
With no related allowance recorded, Average Recorded Investment | 756 | 655 | 1,206
With no related allowance recorded, Interest Income Recognized | 34 | 24 | 27
With a specific allowance recorded, Recorded Investment | 689 | 941 | 4,644
With a specific allowance recorded, Unpaid Principal Balance | 689 | 941 | 4,893
With a specific allowance recorded, Related Allowance | 146 | 119 | 1,759
With a specific allowance recorded, Average Recorded Investment | 713 | 1,010 | 5,006
With a specific allowance recorded, Interest Income Recognized |  | 45 | 90
Total Recorded Investment | 1,385 | 1,578 | 5,754
Total Unpaid Principal Balance | 1,411 | 1,578 | 6,003
Total Related Allowance | 146 | 119 | 1,759
Total Average Recorded Investment | 1,469 | 1,665 | 6,212
Total Interest Income Recognized | 34 | 69 | 117
Agricultural & Farmland [Member] |  |  |
Summary of Impaired loan activity |  |  |
With no related allowance recorded, Recorded Investment |  |  |
With no related allowance recorded, Unpaid Principal Balance |  |  |
With no related allowance recorded, Related Allowance |  |  |
With no related allowance recorded, Average Recorded Investment |  |  |
With no related allowance recorded, Interest Income Recognized |  |  |
With a specific allowance recorded, Recorded Investment |  |  |
With a specific allowance recorded, Unpaid Principal Balance |  |  |
With a specific allowance recorded, Related Allowance |  |  |
With a specific allowance recorded, Average Recorded Investment |  |  |
With a specific allowance recorded, Interest Income Recognized |  |  |
Total Recorded Investment |  |  |
Total Unpaid Principal Balance |  |  |
Total Related Allowance |  |  |
Total Average Recorded Investment |  |  |
Total Interest Income Recognized |  |  |
Residential Real Estate [Member] |  |  |
Summary of Impaired loan activity |  |  |
With no related allowance recorded, Recorded Investment | 752 | 1,248 | 657
With no related allowance recorded, Unpaid Principal Balance | 795 | 1,290 | 657
With no related allowance recorded, Related Allowance |  |  |
With no related allowance recorded, Average Recorded Investment | 1,460 | 1,470 | 862
With no related allowance recorded, Interest Income Recognized | 67 | 70 | 52
With a specific allowance recorded, Recorded Investment | 1,078 | 671 | 1,056
With a specific allowance recorded, Unpaid Principal Balance | 1,097 | 672 | 1,013
With a specific allowance recorded, Related Allowance | 178 | 124 | 167
With a specific allowance recorded, Average Recorded Investment | 628 | 751 | 1,084
With a specific allowance recorded, Interest Income Recognized | 25 | 30 | 45
Total Recorded Investment | 1,830 | 1,919 | 1,713
Total Unpaid Principal Balance | 1,892 | 1,962 | 1,670
Total Related Allowance | 178 | 124 | 167
Total Average Recorded Investment | 2,088 | 2,221 | 1,946
Total Interest Income Recognized | 92 | 100 | 97
Consumer & Other [Member] |  |  |
Summary of Impaired loan activity |  |  |
With no related allowance recorded, Recorded Investment | 110 | 129 | 90
With no related allowance recorded, Unpaid Principal Balance | 110 | 129 | 90
With no related allowance recorded, Related Allowance |  |  |
With no related allowance recorded, Average Recorded Investment | 128 | 151 | 107
With no related allowance recorded, Interest Income Recognized | 9 | 11 | 9
With a specific allowance recorded, Recorded Investment | 87 | 119 | 374
With a specific allowance recorded, Unpaid Principal Balance | 87 | 118 | 374
With a specific allowance recorded, Related Allowance | 5 | 7 | 37
With a specific allowance recorded, Average Recorded Investment | 91 | 123 | 385
With a specific allowance recorded, Interest Income Recognized | 5 | 7 | 22
Total Recorded Investment | 197 | 248 | 464
Total Unpaid Principal Balance | 197 | 247 | 464
Total Related Allowance | 5 | 7 | 37
Total Average Recorded Investment | 219 | 274 | 492
Total Interest Income Recognized | $ 14 | $ 18 | $ 31

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