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Loans, Allowance for Loan Losses and Loan Portfolio by Segment (Details) - USD ($) $ in Thousands | Mar. 31, 2019 | Dec. 31, 2018 | Mar. 31, 2018 | Dec. 31, 2017
--- | --- | --- | --- | ---
Allowance for loan losses: |  |  |  |
Individually evaluated for impairment | $ 40 | $ 62 |  |
Collectively evaluated for impairment | 4,079 | 3,984 |  |
Acquired credit impaired loans | 7 | 0 |  |
Balance, end of period | 4,126 | 4,046 | $ 3,529 | $ 3,403
Loans: |  |  |  |
Individually evaluated for impairment | 13,084 | 17,140 |  |
Collectively evaluated for impairment | 1,183,689 | 1,170,681 |  |
Acquired credit impaired loans | 10,354 | 10,802 |  |
Balance, end of period | 1,207,134 | 1,198,623 |  |
Financial Asset Acquired with Credit Deterioration [Member] |  |  |  |
Loans: |  |  |  |
Acquired credit impaired loans | 10,361 | 10,802 |  |
Commercial and industrial [Member] |  |  |  |
Allowance for loan losses: |  |  |  |
Individually evaluated for impairment | 9 | 10 |  |
Collectively evaluated for impairment | 442 | 390 |  |
Acquired credit impaired loans | 0 | 0 |  |
Balance, end of period | 451 | 400 | 393 | 378
Loans: |  |  |  |
Individually evaluated for impairment | 258 | 268 |  |
Collectively evaluated for impairment | 78,919 | 76,609 |  |
Balance, end of period | 79,782 | 77,799 |  |
Commercial and industrial [Member] | Financial Asset Acquired with Credit Deterioration [Member] |  |  |  |
Loans: |  |  |  |
Acquired credit impaired loans | 605 | 922 |  |
Commercial Secured By Real Estate [Member] |  |  |  |
Allowance for loan losses: |  |  |  |
Individually evaluated for impairment | 2 | 3 |  |
Collectively evaluated for impairment | 2,849 | 2,742 |  |
Acquired credit impaired loans | 7 | 0 |  |
Balance, end of period | 2,858 | 2,745 | 2,143 | 2,178
Loans: |  |  |  |
Individually evaluated for impairment | 11,487 | 15,101 |  |
Collectively evaluated for impairment | 746,161 | 718,709 |  |
Balance, end of period | 763,867 | 740,125 |  |
Commercial Secured By Real Estate [Member] | Financial Asset Acquired with Credit Deterioration [Member] |  |  |  |
Loans: |  |  |  |
Acquired credit impaired loans | 6,219 | 6,315 |  |
Residential Real Estate [Member] |  |  |  |
Allowance for loan losses: |  |  |  |
Individually evaluated for impairment | 29 | 49 |  |
Collectively evaluated for impairment | 664 | 718 |  |
Acquired credit impaired loans | 0 | 0 |  |
Balance, end of period | 693 | 767 | 869 | 717
Loans: |  |  |  |
Individually evaluated for impairment | 1,305 | 1,558 |  |
Collectively evaluated for impairment | 330,138 | 344,751 |  |
Balance, end of period | 334,636 | 349,538 |  |
Residential Real Estate [Member] | Financial Asset Acquired with Credit Deterioration [Member] |  |  |  |
Loans: |  |  |  |
Acquired credit impaired loans | 3,193 | 3,229 |  |
Consumer [Member] |  |  |  |
Allowance for loan losses: |  |  |  |
Individually evaluated for impairment | 0 | 0 |  |
Collectively evaluated for impairment | 77 | 87 |  |
Acquired credit impaired loans | 0 | 0 |  |
Balance, end of period | 77 | 87 | 78 | 76
Loans: |  |  |  |
Individually evaluated for impairment | 34 | 36 |  |
Collectively evaluated for impairment | 17,492 | 17,363 |  |
Balance, end of period | 17,526 | 17,399 |  |
Consumer [Member] | Financial Asset Acquired with Credit Deterioration [Member] |  |  |  |
Loans: |  |  |  |
Acquired credit impaired loans | 0 | 0 |  |
Agricultural [Member] |  |  |  |
Allowance for loan losses: |  |  |  |
Individually evaluated for impairment | 0 | 0 |  |
Collectively evaluated for impairment | 41 | 46 |  |
Acquired credit impaired loans | 0 | 0 |  |
Balance, end of period | 41 | 46 | 44 | 53
Loans: |  |  |  |
Individually evaluated for impairment | 0 | 177 |  |
Collectively evaluated for impairment | 10,914 | 13,135 |  |
Balance, end of period | 10,914 | 13,312 |  |
Agricultural [Member] | Financial Asset Acquired with Credit Deterioration [Member] |  |  |  |
Loans: |  |  |  |
Acquired credit impaired loans | 0 | 0 |  |
Other [Member] |  |  |  |
Allowance for loan losses: |  |  |  |
Individually evaluated for impairment | 0 | 0 |  |
Collectively evaluated for impairment | 6 | 1 |  |
Acquired credit impaired loans | 0 | 0 |  |
Balance, end of period | 6 | 1 | $ 2 | $ 1
Loans: |  |  |  |
Individually evaluated for impairment | 0 | 0 |  |
Collectively evaluated for impairment | 65 | 114 |  |
Balance, end of period | 409 | 450 |  |
Other [Member] | Financial Asset Acquired with Credit Deterioration [Member] |  |  |  |
Loans: |  |  |  |
Acquired credit impaired loans | $ 344 | $ 336 |  |

X
- Definition Reserve for loans impairments recorded after acquisition as a result of current information and events which result in it being probable that estimated cash flows will be less than previously expected or because actual cash flows are less than cash flows previously expected. This relates to loans not accounted for as debt securities, with evidence of deterioration of credit quality since origination that was acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 15 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=82894507&loc=d3e13503-111538 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=82894903&loc=d3e15032-111544 + Details
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- Definition The recorded balance, net of any applicable reductions (for example, unamortized accretable yield and allowance for loan losses). This relates to loans not accounted for debt securities with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=82894903&loc=d3e15032-111544 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 15 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=82894507&loc=d3e13503-111538 + Details
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