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Summary of Significant Accounting Policies (Tables)
3 Months Ended
Mar. 31, 2019
Summary of Significant Accounting Policies  
Potentially dilutive securities outstanding

 

 

 

 

 

 

 

 

 

 

 

 

Three Months Ended March 31, 

 

 

    

    

2019

    

2018

    

Warrants

 

 

 

 —

 

 

553,868

 

Stock options and restricted stock units

 

 

 

4,836,170

 

 

3,952,792