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Stockholders' Deficit (Tables)
6 Months Ended
Jun. 30, 2021
Stockholders' Equity Note [Abstract]  
Summary of Outstanding Warrants to Purchase the Company's Common Stock
As of June 30, 2021 and December 31, 2020, the remaining outstanding warrants to purchase the Company’s common stock were comprised of the following:
 
 
  
Equity Upon
Exercise
 
  
Exercise Price
 
  
Expiration Dates
 
  
 
June 30, 3021
  
December 31, 2020
 
Warrants issued in 2014
  
 
Common Stock
 
  
$
4.47
 
  
 
3/21/2024 - 6/30/2025
 
  
 
72,178
  
 
83,726
 
Warrants issued in 2015
  
 
Common Stock
 
  
$
4.47
 
  
 
6/30/2025
 
  
 
109,908
  
 
209,690
 
Warrants issued in 2016
  
 
Common Stock
 
  
$
4.47
 
  
 
6/30/2025
 
  
 
34,396
  
 
34,396
 
Warrants issued in 2017
  
 
Common Stock
 
  
$
4.47
 
  
 
6/30/2025
 
  
 
31,765
  
 
57,881
 
  
  
  
  
 
 
  
 
 
 
Total Warrants
  
  
  
  
 
248,247
  
 
385,693