Quarterly report pursuant to Section 13 or 15(d)

STOCKHOLDERS' EQUITY AND LOSS PER SHARE (Tables)

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STOCKHOLDERS' EQUITY AND LOSS PER SHARE (Tables)
9 Months Ended
Sep. 30, 2020
Equity [Abstract]  
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share The following table presents the number of shares excluded from the calculation of diluted net loss per share attributable to common stockholders for the periods below:
Nine Months Ended September 30,
  2020 2019
Common stock warrants —  2,134,362 
Common stock options 1,152,552  1,338,603 
Non-vested restricted stock unit awards 3,552,143  2,672,087 
Total shares excluded from net loss per share attributable to common stockholders 4,704,695  6,145,052