Net Loss Per Share (Tables)

3 Months Ended

Mar. 31, 2019

Earnings Per Share [Abstract]

Numerator and Denominator Used in Computing Basic and Diluted Net Loss per Share

The following table provides the numerator and denominator used in computing basic and diluted net loss per share for the periods indicated:

	Three Months Ended March 31,
	2019			2018
Numerator:
Net loss	$	(5,370,846	)	$	(5,379,947	)
Denominator:
Weighted-average shares outstanding-basic and diluted		28,600,679			24,704,128
Net loss per share, basic and diluted	$	(0.19	)	$	(0.22	)

Outstanding Securities Excluded from Computation of Diluted Net Loss per Share

The following outstanding securities were excluded from the computation of diluted net loss per share for the periods presented because their effect would have been anti-dilutive:

	Three Months Ended March 31,
	2019		2018
Options to purchase common stock		1,977,787		1,486,559
Common stock warrants		236,915		237,846
Restricted stock units		229,581		16,666
QNAH convertible note		783,339		755,178