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Subsequent Event (Details Textual) - USD ($)	1 Months Ended	12 Months Ended
	Feb. 27, 2018	Dec. 31, 2017
Underwriting Expense [Abstract]
Stock Issued During Period, Value, New Issues		$ 7,258,000
Subsequent Event [Member]
Subsequent Event [Line Items]
Stock Issued During Period, Shares, New Issues	5,750,000
Payments of Stock Issuance Costs	$ 1,000,000
Shares Issued, Price Per Share	$ 2.25
Underwriting Expense [Abstract]
Stock Issued During Period, Value, New Issues	$ 12,900,000
Proceeds from Issuance of Common Stock	11,900,000
Legal Fees	75,000
Subsequent Event [Member] | Underwriter Compensation [Member]
Subsequent Event [Line Items]
Payments of Stock Issuance Costs	$ 839,000

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- References

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The amount of expense provided in the period for legal costs incurred on or before the balance sheet date pertaining to resolved, pending or threatened litigation, including arbitration and mediation proceedings.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.3)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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- Definition

The cash outflow for cost incurred directly with the issuance of an equity security.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3291-108585

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The cash inflow from the additional capital contribution to the entity.

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-Section 45
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Per share or per unit amount of equity securities issued.

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No definition available.

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Number of new stock issued during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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-Topic 505
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Equity impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
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-Subparagraph (SX 210.5-02(28))
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Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

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