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Summary of Significant Accounting Policies (Tables)
 6 Months Ended
Jun. 30, 2019
Accounting Policies [Abstract]  
Schedule of Computation of Basic and Diluted Earnings per Share
The following table sets forth the computation of basic and diluted earnings per share:
 
 
Three Months
Ended June 30,
 
Six Months
Ended June 30,
 
2019
 
2018
 
2019
 
2018
Numerator: Net loss attributable to common shareholders
$
(4,131,363
)
 
$
(6,522,548
)
 
$
(8,310,463
)
 
$
(11,314,785
)
Net loss used for diluted loss per share
$
(4,131,363
)
 
$
(6,522,548
)
 
$
(8,310,463
)
 
$
(11,314,785
)
Denominator for basic and diluted net loss per share:
 
 
 
 
 
 
 
Weighted-average shares used to compute basic loss per share
5,241,924

 
1,237,244

 
4,667,434

 
1,004,391

Weighted-average shares used to compute diluted net loss per share
5,241,924

 
1,237,244

 
4,667,434

 
1,004,391

Net loss per share attributable to common stockholders:
 
 
 
 
 
 
 
Basic
$
(0.79
)
 
$
(5.27
)
 
$
(1.78
)
 
$
(11.27
)
Diluted
$
(0.79
)
 
$
(5.27
)
 
$
(1.78
)
 
$
(11.27
)
Schedule of Antidilutive Securities Excluded from the Calculation of Diluted Net Loss per Share
The following table sets forth the outstanding potentially dilutive securities that have been excluded in the calculation of diluted net loss per share because their effect was anti-dilutive:
 
 
June 30,
 
2019
 
2018
Options to purchase Common Stock
1,033,274

 
90,167

Warrants to purchase Common Stock
4,404,185

 
3,698,256

Restricted Stock Units
14,187

 
2,067

Series A Convertible Preferred Stock
877

 
877

Series B Convertible Preferred Stock
—

 
941,667

 
5,452,523

 
4,733,034