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Net Loss Per Common Share - Schedule of Potentially Dilutive Securities Excluded from Diluted Net Loss Per Common Share (Details) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Antidilutive Securities
Potentially dilutive securities excluded from diluted net loss per common share	2,154,768	1,626,465	2,154,768	1,626,465
Options to purchase common stock
Antidilutive Securities
Potentially dilutive securities excluded from diluted net loss per common share	1,907,712	1,494,534	1,907,712	1,494,534
Restricted stock units
Antidilutive Securities
Potentially dilutive securities excluded from diluted net loss per common share	219,220	94,480	219,220	94,480
Common stock subject to repurchase
Antidilutive Securities
Potentially dilutive securities excluded from diluted net loss per common share		9,615		9,615
Common stock warrants
Antidilutive Securities
Potentially dilutive securities excluded from diluted net loss per common share	27,836	27,836	27,836	27,836

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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+ References

No definition available.

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