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Loans and Allowance for Loan Losses (Details 4) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017 | Dec. 31, 2017
Commercial & Industrial [Member] |  |  |  |  |
Summary of Impaired loan activity |  |  |  |  |
With no related allowance recorded, Recorded Investment | $ 329 |  | $ 329 |  |
With no related allowance recorded, Unpaid Principal Balance | 329 |  | 329 |  |
With no related allowance recorded, Related Allowance |  |  |  |  |
With no related allowance recorded, Average Recorded Investment | 763 |  | 777 |  |
With no related allowance recorded, Interest Income Recognized | (9) |  | 19 |  |
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 | 329 |  | 329 |  |
Total Unpaid Principal Balance | 329 |  | 329 |  |
Total Related Allowance |  |  |  |  |
Total Average Recorded Investment | 763 |  | 777 |  |
Total Interest Income Recognized | (9) |  | 19 |  |
Commercial RE & Construction [Member] |  |  |  |  |
Summary of Impaired loan activity |  |  |  |  |
With no related allowance recorded, Recorded Investment | 287 |  | 287 |  | 696
With no related allowance recorded, Unpaid Principal Balance | 287 | 29 | 287 | 29 | 722
With no related allowance recorded, Related Allowance |  |  |  |  |
With no related allowance recorded, Average Recorded Investment | 336 | 754 | 336 | 757 | 756
With no related allowance recorded, Interest Income Recognized | 5 | 7 | 17 |  | 34
With a specific allowance recorded, Recorded Investment |  |  |  |  | 689
With a specific allowance recorded, Unpaid Principal Balance |  | (2) |  | (2) | 689
With a specific allowance recorded, Related Allowance |  |  |  |  | 146
With a specific allowance recorded, Average Recorded Investment |  | 689 |  | 721 | 713
With a specific allowance recorded, Interest Income Recognized |  |  |  |  |
Total Recorded Investment | 287 |  | 287 |  | 1,385
Total Unpaid Principal Balance | 287 | 27 | 287 | 27 | 1,411
Total Related Allowance |  |  |  |  | 146
Total Average Recorded Investment | 336 | 1,443 | 336 | 1,478 | 1,469
Total Interest Income Recognized | 5 | 7 | 17 |  | 34
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 | 1,021 |  | 1,021 |  | 752
With no related allowance recorded, Unpaid Principal Balance | 1,064 | 20 | 1,064 | 20 | 795
With no related allowance recorded, Related Allowance |  |  |  |  |
With no related allowance recorded, Average Recorded Investment | 1,733 | 535 | 1,745 | 539 | 1,460
With no related allowance recorded, Interest Income Recognized | 16 | 5 | 57 |  | 67
With a specific allowance recorded, Recorded Investment | 868 |  | 868 |  | 1,078
With a specific allowance recorded, Unpaid Principal Balance | 894 | 20 | 894 | 20 | 1,097
With a specific allowance recorded, Related Allowance | 77 |  | 77 |  | 178
With a specific allowance recorded, Average Recorded Investment | 424 | 625 | 428 | 631 | 628
With a specific allowance recorded, Interest Income Recognized | 5 | 7 | 15 |  | 25
Total Recorded Investment | 1,889 |  | 1,889 |  | 1,830
Total Unpaid Principal Balance | 1,958 | 40 | 1,958 | 40 | 1,892
Total Related Allowance | 77 |  | 77 |  | 178
Total Average Recorded Investment | 2,157 | 1,160 | 2,173 | 1,170 | 2,088
Total Interest Income Recognized | 21 | 12 | 72 |  | 92
Consumer & Other [Member] |  |  |  |  |
Summary of Impaired loan activity |  |  |  |  |
With no related allowance recorded, Recorded Investment | 97 |  | 97 |  | 110
With no related allowance recorded, Unpaid Principal Balance | 97 | 7 | 97 | 7 | 110
With no related allowance recorded, Related Allowance |  |  |  |  |
With no related allowance recorded, Average Recorded Investment | 102 | 126 | 106 | 130 | 128
With no related allowance recorded, Interest Income Recognized | 2 | 2 | 5 |  | 9
With a specific allowance recorded, Recorded Investment | 80 |  | 80 |  | 87
With a specific allowance recorded, Unpaid Principal Balance | 80 | 4 | 80 | 4 | 87
With a specific allowance recorded, Related Allowance | 4 |  | 4 |  | 5
With a specific allowance recorded, Average Recorded Investment | 90 | 92 | 92 | 95 | 91
With a specific allowance recorded, Interest Income Recognized | 1 | 1 | 4 |  | 5
Total Recorded Investment | 177 |  | 177 |  | 197
Total Unpaid Principal Balance | 177 | 11 | 177 | 11 | 197
Total Related Allowance | 4 |  | 4 |  | 5
Total Average Recorded Investment | 192 | 218 | 198 | $ 225 | 219
Total Interest Income Recognized | $ 3 | $ 3 | $ 9 |  | $ 14

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