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DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Series B Warrants (Details) - Series B Warrants
$ / shares in Units, $ in Millions
Jun. 02, 2020
USD ($)
$ / shares
shares
Warrants  
Warrants exercise price (in dollars per share) $ 0.001
Number of shares of common stock subject to warrants (in shares) | shares 7,042,175
Measurement period for reset date (in trading days) 45 days
Floor price per share $ 0.8056
Pre-money valuation amount | $ $ 10
Percentage of market value payable to warrant holders for each day purchased common shares are undelivered 1.50%
Minimum  
Warrants  
Blocker provision percentage 4.99%
Maximum  
Warrants  
Blocker provision percentage 9.99%