Net Loss Per Share (Tables)

12 Months Ended

Dec. 31, 2018

Earnings Per Share [Abstract]

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

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

	Years Ended December 31,
	2018			2017
Numerator:
Net loss	$	(16,453,918	)	$	(18,960,017	)
Denominator:
Weighted-average shares outstanding-basic and diluted		27,523,463			10,597,318
Net loss per share, basic and diluted	$	(0.60	)	$	(1.79	)

Outstanding Options, Warrants, Restricted Stock Units and Debt Conversion Option Excluded from Computation of Diluted Net Loss per Share

The following outstanding options, warrants, restricted stock units and debt conversion option were excluded from the computation of diluted net loss per share for the periods presented because their effect would have been anti-dilutive:

	Years Ended December 31,
	2018		2017
Options to purchase common stock		2,047,237		1,517,771
Common stock warrants		237,846		219,723
Restricted stock units		227,707		26,666
QNAH convertible note		777,769		755,178