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Net Loss Per Share (Detail Textuals) - shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Preferred shares
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Number of shares excluded from calculation of diluted net loss per share	116,321,133	116,321,133	97,465,835
Share options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Number of shares excluded from calculation of diluted net loss per share	18,817,362	18,817,362	20,634,496
Convertible loan
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Number of shares excluded from calculation of diluted net loss per share	7,569,628	7,569,628	6,261,743
Warrant
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Number of shares excluded from calculation of diluted net loss per share	670,814	670,814

X

- Definition

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

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- Definition

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+ References

No definition available.

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