Quarterly report pursuant to Section 13 or 15(d)

CONDENSED CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY (unaudited) (Parenthetical)

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CONDENSED CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY (unaudited) (Parenthetical) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Warrants exercise price (in dollars per share) $ 0.57 $ 0.57
Stock Issuance January 2021 [Member]    
Price per share $ 0.80  
Transactional expenses $ 3,096  
Stock Issuance February 2021 [Member]    
Price per share $ 1.20  
Transactional expenses $ 5,002  
Stock Issuance January 2021 [Member]    
Transactional expenses $ 230  
Stock Issuance February 2020 [Member]    
Price per share   $ 1,000.00
Transactional expenses   $ 711
Stock Issuance February 2020 [Member]    
Warrants exercise price (in dollars per share)   $ 0.57
Transactional expenses   $ 292
Stock Issuance March 2020 [Member]    
Price per share   $ 1.10
Transactional expenses   $ 1,221