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Net Loss Per Share
6 Months Ended
Jun. 30, 2020
Earnings Per Share [Abstract]  
Net Loss Per Share Net Loss Per Share
Basic net loss per share is computed by dividing net loss by the weighted-average number of common shares outstanding during the period. The common stock issuable upon the conversion or exercise of the following dilutive securities has been excluded from the diluted net loss per share calculation because their effect would have been anti-dilutive. Diluted net loss per share, therefore, does not differ from basic net loss per share for the periods presented.
 
June 30,
 
2020
 
2019
 
(unaudited)
Warrants to purchase common stock
1,894,455

 
1,859,733

Stock options and restricted stock units outstanding
4,040,935

 
3,266,572

Total
5,935,390

 
5,126,305