Organization, Liquidity and Management's Plan, and Summary of Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2017

Organization Consolidation And Presentation Of Financial Statements [Abstract]

Schedule of Computation of Basic and Diluted Net Loss per Common Share

The following table presents the computation of basic and diluted net loss per common share:

	Three months ended June 30,						Six months ended June 30,
	2017			2016			2017			2016
Historical net loss per share
Numerator
Net loss attributable to common stockholders	$	(5,171,634	)	$	(3,692,793	)	$	(10,393,534	)	$	(7,279,781	)
Denominator
Weighted-average common shares outstanding		24,387,148			17,700,774			23,528,353			13,692,258
Less: Weighted-average shares subject to repurchase		(268,261	)		(595,400	)		(287,571	)		(631,682	)
Denominator for basic and diluted net loss per share		24,118,887			17,105,374			23,240,782			13,060,576
Basic and diluted net loss per share	$	(0.21	)	$	(0.22	)	$	(0.45	)	$	(0.56	)

Schedule of Potentially Dilutive Securities Not Included in Calculation of Diluted Net Loss per Share

Potentially dilutive securities that are not included in the calculation of diluted net loss per share because their effect is anti-dilutive are as follows (in common equivalent shares):

	As of June 30,
	2017		2016
Common stock warrants		12,479,837		9,667,500
Restricted stock units		56,750		61,063
Common stock subject to repurchase		245,096		559,745
Common stock options		1,594,894		886,212
Shares issuable upon conversion of debt		3,597,271		3,170,311
		17,973,848		14,344,831