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STOCKHOLDERS' EQUITY - Narrative (Details)
Jan. 31, 2020
shares
Subsidiary, Sale of Stock [Line Items]  
Warrant right to purchase a share of common stock (in shares) 0.25
Registration Statement  
Subsidiary, Sale of Stock [Line Items]  
Number of warrants included in preferred stock unit (in shares) 1
Registration Statement | Series A Preferred Stock  
Subsidiary, Sale of Stock [Line Items]  
Number of shares included in preferred stock unit (in shares) 1