Quarterly report pursuant to Section 13 or 15(d)

Unaudited Condensed Consolidated Statements of Stockholders' Deficit

v3.21.1
Unaudited Condensed Consolidated Statements of Stockholders' Deficit - USD ($)
$ in Thousands
Total
Redeemable Series E Convertible Preferred Stock
Common Stock
Common Stock
Series F Convertible Preferred Stock
Series F Convertible Preferred Stock
Series F Convertible Preferred Stock
Additional Paid-In Capital
Additional Paid-In Capital
Series F Convertible Preferred Stock
Accumulated Deficit
Balance at Dec. 31, 2019 $ (7,071)   $ 48     $ 194,150   $ (201,269)
Balance (in shares) at Dec. 31, 2019     47,977,390          
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Issued pursuant to a private placement 500         500    
Shares and warrants issued pursuant to a private placement (in shares)     308,642          
Share-based compensation 2,485   $ 1     2,484    
Share-based compensation (in shares)     455,956          
Shares and warrants issued to third party for contract termination 198         198    
Shares and warrants issued to third party for contract termination (in shares)     72,720          
Shares issued to third parties for services 125         125    
Stock issued to third parties for services (in shares)     125,000          
Warrants issued to third parties for services 2,594         2,594    
Net and comprehensive loss available to common stockholders (9,488)             (9,488)
Balance at Mar. 31, 2020 (10,657)   $ 49     200,051   (210,757)
Balance (in shares) at Mar. 31, 2020     48,939,708          
Balance at Dec. 31, 2019   $ 10,566            
Balance (in shares) at Dec. 31, 2019   1,387,378            
Balance at Mar. 31, 2020   $ 10,566            
Balance (in shares) at Mar. 31, 2020   1,387,378            
Balance at Dec. 31, 2020 (28,102)   $ 52   $ 0 232,487   (260,641)
Balance (in shares) at Dec. 31, 2020     51,908,398   21,754      
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Issued pursuant to a private placement 4,072   $ 3     4,069    
Shares and warrants issued pursuant to a private placement (in shares)     3,280,400          
Share-based compensation 2,544         2,544    
Share-based compensation (in shares)     105,222          
Warrant exercises 1,310   $ 2     1,308    
Warrant exercises (in shares)     1,784,298          
Shares issued to third parties for services 46         46    
Stock issued to third parties for services (in shares)     30,000          
Warrant modifications 0         402   (402)
Conversion of Series F shares to common stock       $ 9     $ (9)  
Conversion of Series F shares to common stock (in shares)       8,896,030 (4,448)      
Net and comprehensive loss available to common stockholders (12,850)             (12,850)
Balance at Mar. 31, 2021 $ (32,980)   $ 66   $ 0 $ 240,847   $ (273,893)
Balance (in shares) at Mar. 31, 2021     66,004,348   17,306