Net Loss Attributable to Common Stockholders (Tables)

9 Months Ended

Sep. 30, 2015

Earnings Per Share [Abstract]

Computation of Basic and Diluted Net Loss per Share Attributable to Common Stockholders

The following table summarizes the computation of basic and diluted net loss per share attributable to common stockholders of the Company:

	Three Months Ended September 30,						Nine Months Ended September 30,
	2015			2014			2015			2014
Numerator:
Basic
Net loss and comprehensive loss	$	(3,365,687	)	$	(2,009,206	)	$	(7,734,431	)	$	(2,742,580	)
Accretion of preferred stock		—			—			—			(333,082	)
Deemed dividend		—			—			—			(4,053,570	)
Net loss attributable to common stockholders – basic	$	(3,365,687	)	$	(2,009,206	)	$	(7,734,431	)	$	(7,129,232	)
Diluted
Net loss attributable to common stockholders – basic		(3,365,687	)		(2,009,206	)		(7,734,431	)		(7,129,232	)
Less: change in fair value of derivative liabilities		—			—			—			(2,327,502	)
Net loss available to common stockholders – diluted	$	(3,365,687	)	$	(2,009,206	)	$	(7,734,431	)	$	(9,456,734	)
Denominator:
Basic
Weighted-average number of common shares – basic		9,712,521			5,565,415			8,270,405			3,229,338
Diluted
Weighted-average number of common shares – basic		9,712,521			5,565,415			8,270,405			3,229,338
Warrants to purchase preferred stock (treasury stock)		—			—			—			43,392
Total weighted average number of common shares – diluted		9,712,521			5,565,415			8,270,405			3,272,730
Net loss per share:
Basic	$	(0.35	)	$	(0.36	)	$	(0.94	)	$	(2.21	)
Diluted	$	(0.35	)	$	(0.36	)	$	(0.94	)	$	(2.89	)

Computation of Diluted Weighted-Average Shares Outstanding

The following potentially dilutive securities outstanding, prior to use of the treasury stock method or if-converted method, have been excluded from the computation of diluted weighted-average shares outstanding, because such securities had an antidilutive impact:

	Three Months ended September 30,				Nine Months ended September 30,
	2015		2014		2015		2014
Options to purchase common stock		1,077,330		874,032		1,077,300		874,032
Warrants to purchase common stock		1,384,608		60,000		1,384,608		60,000
Total of common stock equivalents		2,461,938		934,032		2,461,908		934,032