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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)
3 Months Ended
Mar. 31, 2022
Accounting Policies [Abstract]  
Summary of Outstanding Potentially Dilutive Securities Excluded from Calculation of Diluted Net Income (Loss) Per Share
The following table sets forth the outstanding potentially dilutive securities that have been excluded in the calculation of diluted net loss per share because doing so would be anti-dilutive (in common stock equivalent shares):
Three Months Ended March 31,
20222021
Common stock warrants12,517,328 12,517,328 
Series X Convertible Preferred stock18,184,720 10,442,780 
Common stock options, RSUs and PRSUs issued and outstanding10,847,996 8,648,708 
Total41,550,044 31,608,816