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Net Loss Per Share (Tables)

12 Months Ended

Dec. 31, 2017

Earnings Per Share [Abstract]

Schedule of basic and diluted net loss per share

			Years ended December 31,
			2016						2017
Numerator:
Net loss				$	(11,791)					$	(7,470)
Dividend on convertible exchangeable preferred shares				$	(200)					$	(201)
Beneficial conversion feature of Series A convertible stock				$	—					$	(3,638)
Conversion of Series A convertible preferred stock				$	—					$	(3,537)
Net loss attributable to common shareholders				$	(11,991)					$	(14,846)
Denominator:
Weighted-average number of common shares used in loss per share – basic and diluted					3,424,976						7,631,152
Loss per share – basic and diluted				$	(3.50)					$	(1.95)

Schedule of company's potential anti dilutive securities

			Year ended December 31,
			2016						2017
Stock options					389,378						535,616
Convertible preferred stock					1,698						1,698
Series A preferred stock					—						132,000
Common stock warrants					—						7,490,500
Total shares excluded from calculation					391,076						8,159,814

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- References

No definition available.

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-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

Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

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