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Disclosures about Fair Value Measurements (Details Textual) - USD ($) | 6 Months Ended |
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Jun. 30, 2017 | Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Carrying value of impaired loans | $ 1,311,000 | $ 674,000
Specific valuation allowance | 496,000 | 527,000
Net fair value of impaired loans | $ 814,000 | $ 147,000
Assets and liabilities considered financial instruments, percentage | 90.00% |

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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://www.xbrl.org/2003/role/presentationRef -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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