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CONVERTIBLE NOTES - Summary of Convertible Notes Outstanding (Parenthetical) (Details) - USD ($)
Aug. 31, 2021
Mar. 31, 2021
Mar. 17, 2021
Feb. 28, 2021
Feb. 02, 2021
March Note          
Debt Instrument [Line Items]          
Principal amount   $ 20,000,000 $ 20,000,000    
Interest rate (as a percent)   6.00% 6.00%    
February Note          
Debt Instrument [Line Items]          
Principal amount       $ 5,000,000 $ 5,000,000
Interest rate (as a percent)       6.00% 6.00%
August Note          
Debt Instrument [Line Items]          
Principal amount $ 5,500,000        
Interest rate (as a percent) 6.00%