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Loans and Allowance for Loan Losses (Details Narrative) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | ---
Jun. 30, 2018 | Sep. 30, 2017 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017 | Dec. 31, 2017 | Mar. 31, 2018 | Mar. 31, 2017 | Dec. 31, 2016
Impaired financing receivable loan balance charged off |  |  |  | $ 9,000 |  | $ 9,800 |  |  |
Nonaccrual loans, interest earned |  |  |  | 132 | $ 63 |  |  |  |
Loans receivable, gross, total | $ 467,137 |  |  | 467,137 |  | 439,236 |  |  |
Impaired financing receivable, recorded investment, total | 9,018 |  |  | 9,018 |  | 9,760 |  |  |
Loans and leases receivable, allowance | 5,835 |  | $ 5,326 | 5,835 | 5,326 | 5,459 | $ 5,644 | $ 5,327 | $ 5,344
Commercial Loan [Member] |  |  |  |  |  |  |  |  |
Commercial real estate loans receivable, gross | 41 |  |  | 41 |  |  |  |  |
Loans receivable, gross, total | 11 |  |  | 11 |  |  |  |  |
Trouble Debt Restructurings [Member] |  |  |  |  |  |  |  |  |
Provision for loan losses reversal | 58 |  |  | 91 | 13 |  |  |  |
Loans and leases receivable, allowance | 36 |  |  | 36 |  | $ 127 |  |  |
Trouble Debt Restructurings [Member] | Agriculture Loan [Member] |  |  |  |  |  |  |  |  |
Agriculture loans receivable | $ 64 |  |  | $ 64 |  |  |  |  |
Loans receivable, gross, total |  |  |  |  |  |  |  | 15 |
Trouble Debt Restructurings [Member] | Two Agriculture Loans [Member] |  |  |  |  |  |  |  |  |
Agriculture loans receivable |  |  | 87 |  | 87 |  |  |  |
Impaired financing receivable, recorded investment, total |  |  | 49 |  | 49 |  |  |  |
Trouble Debt Restructurings [Member] | Agriculture Loan [Member] |  |  |  |  |  |  |  |  |
Impaired financing receivable loan balance charged off |  | $ 215 |  |  |  |  |  |  |
Trouble Debt Restructurings [Member] | Commercial Real Estate Loan [Member] |  |  |  |  |  |  |  |  |
Loans receivable, gross, total |  |  |  |  |  |  |  | $ 11 |
Trouble Debt Restructurings [Member] | One Commercial Real Estate Loan [Member] |  |  |  |  |  |  |  |  |
Commercial real estate loans receivable, gross |  |  | $ 11 |  | $ 11 |  |  |  |

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- Definition Amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 14A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953550-111524 + Details
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- Definition Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.7(d)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (b)(1)(ii) -URI http://asc.fasb.org/extlink&oid=82894903&loc=d3e15032-111544 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SAB Topic 6.L.1) -URI http://asc.fasb.org/extlink&oid=27010918&loc=d3e74567-122707 + Details
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