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Summary of Significant Accounting Policies (Details Textual) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2017 | Dec. 31, 2016
Significant Accounting Policies [Line Items] |  |
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax | $ 0 |
Federal Reserve Bank [Member] |  |
Significant Accounting Policies [Line Items] |  |
Cash, FDIC Insured Amount | $ 878 | $ 765
Premises And Equipment [Member] | Minimum [Member] |  |
Significant Accounting Policies [Line Items] |  |
Property, Plant and Equipment, Useful Life | 26 years |
Premises And Equipment [Member] | Maximum [Member] |  |
Significant Accounting Policies [Line Items] |  |
Property, Plant and Equipment, Useful Life | 39 years |
Furniture and Equipment [Member] | Minimum [Member] |  |
Significant Accounting Policies [Line Items] |  |
Property, Plant and Equipment, Useful Life | 2 years |
Furniture and Equipment [Member] | Maximum [Member] |  |
Significant Accounting Policies [Line Items] |  |
Property, Plant and Equipment, Useful Life | 10 years |
Certificates of Deposit [Member] |  |
Significant Accounting Policies [Line Items] |  |
Maturities of Time Deposits, Description | Certificates of deposits in other financial institutions generally mature within 5 years and are carried at cost |

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- Definition The amount of cash deposited in financial institutions as of the balance sheet date that is insured by the Federal Deposit Insurance Corporation. + References No definition available. + Details
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- Definition Description of time deposit maturities, including certificates of deposit. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Industry Guide -Number 3 -Section V -Paragraph D-E + Details
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- Definition Amount of tax expense (benefit) of reclassification adjustment from accumulated other comprehensive income for unrealized gain (loss) realized upon the sale of available-for-sale securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27357-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84228862&loc=d3e640-108580 + Details
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- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
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