Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Statements Of Convertible Redeemable Preferred Stock and Stockholders' Equity (Deficit) (Unaudited)

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Condensed Consolidated Statements Of Convertible Redeemable Preferred Stock and Stockholders' Equity (Deficit) (Unaudited) - USD ($)
$ in Thousands
Total
Series H Preferred Stock [Member]
Series J Convertible Preferred Stock [Member]
Common Stock
Additional Paid-in Capital
Accumulated Other Comprehensive Loss
Accumulated Deficit
Mezzanine Equity
Series H Preferred Stock [Member]
Mezzanine Equity
Series J Convertible Preferred Stock [Member]
Beginning balance at Dec. 31, 2022 $ 4,889     $ 0 $ 301,790 $ (733) $ (296,168)    
Balance (in shares) at Dec. 31, 2022       77,000          
Sale of common stock and pre-funded warrants, net of fees 8,503     $ 0 8,503        
Sale of common stock and pre-funded warrants, net of fees ,shares       172,000          
Deemed dividend on Series F Convertible Preferred Stock 0                
Stock-based compensation 521       521        
Exercise of common stock warrants 14     $ 0 14        
Exercise of common stock warrants, shares       14,000          
Net loss (5,849)           (5,849)    
Foreign currency translation adjustments 80         80      
Ending balance at Mar. 31, 2023       $ 0 310,828 (653) (302,017)    
Ending Balance at Mar. 31, 2023 8,158                
Ending Balance (in shares) at Mar. 31, 2023       263,000          
Beginning balance at Dec. 31, 2023 (247)     $ 3 317,103 (553) (316,800) $ 346 $ 1,857
Beginning balance at Dec. 31, 2023 $ 2,203                
Beginning balance, shares at Dec. 31, 2023   5,000 15,000         5,000 15,000
Balance (in shares) at Dec. 31, 2023 3,416,000     3,416,000          
Paid-in-kind dividend on Series J Convertible Redeemable Preferred Stock, Shares                 1,000
Sale of common stock and pre-funded warrants, net of fees $ 2,784     $ 8 2,776        
Sale of common stock and pre-funded warrants, net of fees ,shares       7,795,000          
Exercise of Class A Warrants, Shares       13,063,000          
Exercise of Class A Warrants 1,989     $ 13 1,976        
Deemed dividend on Series F Convertible Preferred Stock 0                
Stock-based compensation 102       102        
Issuance of stock from RSUs, net, shares       4,000          
Exercise of common stock warrants 9     $ 9 0        
Exercise of common stock warrants, shares       8,979,000          
Net loss (6,485)           (6,485)    
Foreign currency translation adjustments (86)         (86)      
Ending balance at Mar. 31, 2024 (1,934)     $ 33 $ 321,957 $ (639) $ (323,285) $ 346 $ 1,857
Ending Balance at Mar. 31, 2024 $ 2,203                
Ending Balance (in shares) at Mar. 31, 2024 33,257,000     33,257,000          
Ending balance, shares at Mar. 31, 2024   5,000 16,000         5,000 16,000