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Net Loss Per Share (Tables)
12 Months Ended
Dec. 31, 2021
Earnings Per Share [Abstract]  
Schedule of Dilutive Net Loss Per Common Share

The following table summarizes the number of potentially dilutive common stock equivalents excluded from the calculation of diluted net loss per common share as of December 31, 2021 and 2020:

 

   2021   2020 
   December 31, 
   2021   2020 
Shares of common stock issuable upon exercise of warrants   4,552,670    1,507,802 
Shares of common stock issuable upon exercise of options and restricted stock units   3,843,989    215,631 
Potentially dilutive common stock equivalents excluded from diluted net loss per share   8,396,659    1,723,433