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Loans (Details 9) - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Financing Receivable Recorded Investment [Line Items] |  |
Total risk category of loans by class of loans | $ 895,561 | $ 779,340
Pass |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total risk category of loans by class of loans | 873,901 | 759,104
Special Mention |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total risk category of loans by class of loans | 11,415 | 7,672
Substandard |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total risk category of loans by class of loans | 10,245 | 12,564
Originated Loans |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total risk category of loans by class of loans | 723,220 | 574,943
Originated Loans | Pass |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total risk category of loans by class of loans | 711,466 | 564,374
Originated Loans | Special Mention |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total risk category of loans by class of loans | 6,459 | 4,310
Originated Loans | Substandard |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total risk category of loans by class of loans | 5,295 | 6,259
Originated Loans | Commercial real estate | Commercial real estate, Owner occupied |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total risk category of loans by class of loans | 139,926 | 109,433
Originated Loans | Commercial real estate | Commercial real estate, Non-owner occupied |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total risk category of loans by class of loans | 198,588 | 165,448
Originated Loans | Commercial real estate | Commercial farmland |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total risk category of loans by class of loans | 70,443 | 34,115
Originated Loans | Commercial real estate | Commercial real estate, Other |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total risk category of loans by class of loans | 88,703 | 70,542
Originated Loans | Commercial real estate | Pass | Commercial real estate, Owner occupied |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total risk category of loans by class of loans | 137,913 | 106,448
Originated Loans | Commercial real estate | Pass | Commercial real estate, Non-owner occupied |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total risk category of loans by class of loans | 198,043 | 162,465
Originated Loans | Commercial real estate | Pass | Commercial farmland |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total risk category of loans by class of loans | 70,354 | 34,057
Originated Loans | Commercial real estate | Pass | Commercial real estate, Other |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total risk category of loans by class of loans | 88,421 | 69,947
Originated Loans | Commercial real estate | Special Mention | Commercial real estate, Owner occupied |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total risk category of loans by class of loans | 442 | 490
Originated Loans | Commercial real estate | Special Mention | Commercial real estate, Non-owner occupied |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total risk category of loans by class of loans | 419 | 522
Originated Loans | Commercial real estate | Special Mention | Commercial farmland |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total risk category of loans by class of loans | 44 | 0
Originated Loans | Commercial real estate | Special Mention | Commercial real estate, Other |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total risk category of loans by class of loans | 36 | 325
Originated Loans | Commercial real estate | Substandard | Commercial real estate, Owner occupied |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total risk category of loans by class of loans | 1,571 | 2,495
Originated Loans | Commercial real estate | Substandard | Commercial real estate, Non-owner occupied |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total risk category of loans by class of loans | 126 | 2,461
Originated Loans | Commercial real estate | Substandard | Commercial farmland |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total risk category of loans by class of loans | 45 | 58
Originated Loans | Commercial real estate | Substandard | Commercial real estate, Other |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total risk category of loans by class of loans | 246 | 270
Originated Loans | Commercial | Commercial and industrial |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total risk category of loans by class of loans | 192,879 | 170,732
Originated Loans | Commercial | Commercial, Agricultural |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total risk category of loans by class of loans | 32,681 | 24,673
Originated Loans | Commercial | Pass | Commercial and industrial |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total risk category of loans by class of loans | 184,444 | 167,062
Originated Loans | Commercial | Pass | Commercial, Agricultural |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total risk category of loans by class of loans | 32,291 | 24,395
Originated Loans | Commercial | Special Mention | Commercial and industrial |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total risk category of loans by class of loans | 5,326 | 2,720
Originated Loans | Commercial | Special Mention | Commercial, Agricultural |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total risk category of loans by class of loans | 192 | 253
Originated Loans | Commercial | Substandard | Commercial and industrial |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total risk category of loans by class of loans | 3,109 | 950
Originated Loans | Commercial | Substandard | Commercial, Agricultural |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total risk category of loans by class of loans | 198 | 25
Acquired Loans |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total risk category of loans by class of loans | 172,341 | 204,397
Acquired Loans | Pass |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total risk category of loans by class of loans | 162,435 | 194,730
Acquired Loans | Special Mention |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total risk category of loans by class of loans | 4,956 | 3,362
Acquired Loans | Substandard |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total risk category of loans by class of loans | 4,950 | 6,305
Acquired Loans | Commercial real estate | Commercial real estate, Owner occupied |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total risk category of loans by class of loans | 53,051 | 60,928
Acquired Loans | Commercial real estate | Commercial real estate, Non-owner occupied |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total risk category of loans by class of loans | 20,258 | 24,949
Acquired Loans | Commercial real estate | Commercial farmland |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total risk category of loans by class of loans | 47,755 | 54,204
Acquired Loans | Commercial real estate | Commercial real estate, Other |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total risk category of loans by class of loans | 11,976 | 14,666
Acquired Loans | Commercial real estate | Pass | Commercial real estate, Owner occupied |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total risk category of loans by class of loans | 51,133 | 58,655
Acquired Loans | Commercial real estate | Pass | Commercial real estate, Non-owner occupied |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total risk category of loans by class of loans | 19,823 | 23,577
Acquired Loans | Commercial real estate | Pass | Commercial farmland |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total risk category of loans by class of loans | 43,694 | 53,039
Acquired Loans | Commercial real estate | Pass | Commercial real estate, Other |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total risk category of loans by class of loans | 11,299 | 14,060
Acquired Loans | Commercial real estate | Special Mention | Commercial real estate, Owner occupied |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total risk category of loans by class of loans | 466 | 707
Acquired Loans | Commercial real estate | Special Mention | Commercial real estate, Non-owner occupied |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total risk category of loans by class of loans | 63 | 1,195
Acquired Loans | Commercial real estate | Special Mention | Commercial farmland |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total risk category of loans by class of loans | 3,304 | 0
Acquired Loans | Commercial real estate | Special Mention | Commercial real estate, Other |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total risk category of loans by class of loans | 567 | 464
Acquired Loans | Commercial real estate | Substandard | Commercial real estate, Owner occupied |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total risk category of loans by class of loans | 1,452 | 1,566
Acquired Loans | Commercial real estate | Substandard | Commercial real estate, Non-owner occupied |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total risk category of loans by class of loans | 372 | 177
Acquired Loans | Commercial real estate | Substandard | Commercial farmland |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total risk category of loans by class of loans | 757 | 1,165
Acquired Loans | Commercial real estate | Substandard | Commercial real estate, Other |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total risk category of loans by class of loans | 110 | 142
Acquired Loans | Commercial | Commercial and industrial |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total risk category of loans by class of loans | 27,094 | 33,626
Acquired Loans | Commercial | Commercial, Agricultural |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total risk category of loans by class of loans | 12,207 | 16,024
Acquired Loans | Commercial | Pass | Commercial and industrial |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total risk category of loans by class of loans | 25,286 | 30,543
Acquired Loans | Commercial | Pass | Commercial, Agricultural |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total risk category of loans by class of loans | 11,200 | 14,856
Acquired Loans | Commercial | Special Mention | Commercial and industrial |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total risk category of loans by class of loans | 2 | 311
Acquired Loans | Commercial | Special Mention | Commercial, Agricultural |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total risk category of loans by class of loans | 554 | 685
Acquired Loans | Commercial | Substandard | Commercial and industrial |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total risk category of loans by class of loans | 1,806 | 2,772
Acquired Loans | Commercial | Substandard | Commercial, Agricultural |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total risk category of loans by class of loans | $ 453 | $ 483

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