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NET LOSS PER SHARE OF COMMON STOCK - Securities Excluded from Calculation of Weighted Average Shares Outstanding as their Effect is Antidilutive (Details) - shares	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Common Stock Options
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Securities outstanding excluded from the calculation of weighted average shares outstanding	8,378,672	6,555,150
Restricted Stock Units
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Securities outstanding excluded from the calculation of weighted average shares outstanding	127,300	185,950
Common Stock Warrants
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Securities outstanding excluded from the calculation of weighted average shares outstanding	40,790	40,790

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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