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STOCKHOLDERS' EQUITY - WARRANT EXERCISES (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2022
Sep. 30, 2021
May 27, 2020
Class of Warrant or Right [Line Items]        
Proceeds from exercise of warrants   $ 3,638,000 $ 2,479,000  
Purchase Warrants [Member]        
Class of Warrant or Right [Line Items]        
Proceeds from exercise of warrants $ 3,638,000      
2020 Public Offering of Common Stock and Warrants        
Class of Warrant or Right [Line Items]        
Warrant to purchase common stock, shares 52,975,463 52,975,463    
2020 Public Offering of Common Stock and Warrants | 2020 Pre-Funded Warrant        
Class of Warrant or Right [Line Items]        
Warrant to purchase common stock, shares 8,335,239 8,335,239   8,335,239
Underwritten Public Offering | Stock Purchase Warrants        
Class of Warrant or Right [Line Items]        
Warrants to purchase common stock exercised, shares 2,798,003 2,798,003