Quarterly report pursuant to Section 13 or 15(d)

Stockholders??? Equity (Details)

v3.24.1.1.u2
Stockholders’ Equity (Details)
$ / shares in Units, $ in Thousands
 1 Months Ended 3 Months Ended 8 Months Ended
Jul. 20, 2023
USD ($)
Jul. 04, 2023
USD ($)
shares
Jun. 13, 2023
USD ($)
$ / shares
shares
Feb. 02, 2023
USD ($)
shares
Jun. 14, 2022
USD ($)
$ / shares
shares
Jul. 31, 2023
shares
Jun. 30, 2023
shares
Mar. 31, 2024
USD ($)
consultant
shares
Mar. 31, 2023
USD ($)
Mar. 31, 2024
USD ($)
Mar. 31, 2024
¥ / shares
Mar. 31, 2024
USD ($)
$ / shares
shares
Dec. 31, 2023
$ / shares
shares
Dec. 31, 2023
¥ / shares
shares
Jun. 14, 2023
shares
Feb. 28, 2023
USD ($)
shares
Feb. 01, 2023
$ / shares
shares
Class of Stock [Line Items]                                  
Preferred stock, shares authorized (in shares)                       50,000,000 50,000,000 50,000,000      
Preferred stock, par value (in dollars per share) | $ / shares                       $ 0.0001 $ 0.0001        
Preferred stock, shares outstanding (in shares)                       0 0 0      
Proceeds from the issuance of common stock and warrants, net of fees | $               $ 0 $ 0                
Warrant liability | $                       $ 23          
Common stock, shares authorized (in shares)                       800,000,000 800,000,000 800,000,000      
Aggregate amount | $ $ 50,000                                
Outstanding common stock percentage 4.99%                                
ELOC purchase agreement percentage               97.00%                  
At-the-Market Offering                                  
Class of Stock [Line Items]                                  
Sale of stock, consideration received on transaction | $               $ 600                  
Commissions and expenses | $               $ 28                  
ELOC Purchase Agreement                                  
Class of Stock [Line Items]                                  
Sale of stock, consideration received on transaction | $                   $ 1,400              
Warrant                                  
Class of Stock [Line Items]                                  
Warrants and rights outstanding, term                       5 years 5 years 5 years      
Warrant to purchase shares (in shares)                       750,000 106,764 106,764      
Exercise price per share (in dollars per share) | $ / shares                       $ 0.094 $ 19.30        
Class of warrant or right, number of consultants | consultant               2                  
Class of warrant or right, warrants exercised share (in shares)               0                  
Common Stock                                  
Class of Stock [Line Items]                                  
Common stock, shares authorized (in shares)                       800,000,000          
Series F Preferred Stock To Common Stock | Common Stock                                  
Class of Stock [Line Items]                                  
Conversion of stock, shares issued           103,234                      
Weighted Average | At-the-Market Offering                                  
Class of Stock [Line Items]                                  
Sale of stock, price per share (in dollars per share) | $ / shares                       $ 0.13          
Weighted Average | ELOC Purchase Agreement                                  
Class of Stock [Line Items]                                  
Sale of stock, price per share (in dollars per share) | $ / shares                       $ 0.13          
Line of credit                                  
Class of Stock [Line Items]                                  
Dividends paid in shares of Series D preferred stock (in shares)       10,000                          
Warrants and rights outstanding, term                       5 years          
Warrant to purchase shares (in shares)                       750,000          
Exercise price per share (in dollars per share) | $ / shares                       $ 0.09          
Series A Preferred Stock                                  
Class of Stock [Line Items]                                  
Preferred stock, shares authorized (in shares)                       300 300 300      
Preferred stock, par value (in dollars per share) | $ / shares                       $ 0.0001 $ 0.0001        
Preferred stock, shares issued (in shares)                       251 251 251      
Preferred stock, shares outstanding (in shares)                       251 251 251      
Series B Preferred Stock                                  
Class of Stock [Line Items]                                  
Preferred stock, shares authorized (in shares)                       1,500 1,500 1,500      
Preferred stock, par value (in dollars per share) | $ / shares                       $ 0.0001 $ 0.0001        
Preferred stock, shares issued (in shares)                       1,443 1,443 1,443      
Preferred stock, shares outstanding (in shares)                       1,443 1,443 1,443      
Series C Preferred Stock                                  
Class of Stock [Line Items]                                  
Preferred stock, shares authorized (in shares)                       600,000 600,000 600,000      
Preferred stock, par value (in dollars per share) | $ / shares                       $ 0.0001 $ 0.0001        
Preferred stock, shares issued (in shares)                       500,756 500,756 500,756      
Preferred stock, shares outstanding (in shares)                       500,756 500,756 500,756      
Series D Preferred Stock                                  
Class of Stock [Line Items]                                  
Preferred stock, shares authorized (in shares)                       7,000 7,000 7,000      
Preferred stock, par value (in dollars per share) | ¥ / shares                     ¥ 0.0001     ¥ 0.0001      
Preferred stock, shares issued (in shares)                       0 0 0      
Preferred stock, shares outstanding (in shares)                       0 0 0      
Exchanged preferred shares (in shares)   1,197                              
Adjustments to additional paid in capital, warrant issued | $               $ 500                  
Series E preferred stock                                  
Class of Stock [Line Items]                                  
Preferred stock, shares authorized (in shares)                       77,000 77,000 77,000     77,000
Preferred stock, par value (in dollars per share) | $ / shares                       $ 0.0001 $ 0.0001       $ 0.0001
Preferred stock, shares issued (in shares)       5,000               0 0 0      
Preferred stock, shares outstanding (in shares)                       0 0 0      
Convertible preferred stock (in shares)                                 1,000
Commitment fee | $       $ 1,500                          
Issue an additional shares (in shares)       5,000                          
Fair value of additional shares (in shares)       10,000                          
Proceeds from the issuance of common stock and warrants, net of fees | $       $ 2,900                          
Fair value of additional capital | $       $ 4,400                          
Warrant to purchase shares (in shares)                               45,000  
Warrant liability | $                               $ 5,600  
Series F preferred stock                                  
Class of Stock [Line Items]                                  
Preferred stock, shares authorized (in shares)                       9,073 9,073 9,073      
Preferred stock, par value (in dollars per share) | $ / shares                       $ 0.0001 $ 0.0001        
Preferred stock, shares issued (in shares)                       4,448 4,448 4,448      
Preferred stock, shares outstanding (in shares)                       4,448 4,448 4,448      
Convertible preferred stock (in shares)   2,622                              
Exchanged preferred shares (in shares)   1,847                              
Warrants and rights outstanding, term                       5 years          
Warrant to purchase shares (in shares)                       592,137          
Exercise price per share (in dollars per share) | $ / shares                       $ 8.868          
Fair value of preferred stock | $                       $ 700          
Warrant liability | $                       500          
Sale of stock, number of shares issued in transaction (in shares)             206                    
Series F preferred stock | Series F Preferred Stock To Common Stock                                  
Class of Stock [Line Items]                                  
Issue of total shares (in shares)           803                      
Series F preferred stock | Senior Secured Notes                                  
Class of Stock [Line Items]                                  
Convertible preferred stock (in shares)   206                              
Principal amount of debt | $   $ 200                              
Fair value of preferred stock | $                       100          
Warrant liability | $                       30          
Series F preferred stock | 2022 Notes                                  
Class of Stock [Line Items]                                  
Principal amount of debt | $   $ 2,600                              
Fair value of preferred stock | $                       1,100          
Warrant liability | $                       600          
Series F preferred stock | Demand Note Holders                                  
Class of Stock [Line Items]                                  
Convertible preferred stock (in shares)   576                              
Principal amount of debt | $   $ 600                              
Fair value of preferred stock | $                       200          
Warrant liability | $                       $ 200          
Series F-1 Preferred Stock                                  
Class of Stock [Line Items]                                  
Preferred stock, shares authorized (in shares)           325,737           9,052 9,052 9,052      
Preferred stock, par value (in dollars per share) | $ / shares                       $ 0.0001 $ 0.0001        
Preferred stock, shares issued (in shares)                       653 653 653      
Preferred stock, shares outstanding (in shares)                       653 653 653      
Warrant liability | $     $ 900                            
Shares issued (in Shares)     3,583     2,930                      
Aggregate purchase price | $     $ 2,300                            
Aggregate shares     398,377                            
Common stock price per share (in dollars per share) | $ / shares     $ 8.994                            
Allocated proceeds liability warrants | $     $ 2,300                            
Fair value warrants remaining proceeds | $     $ 1,400                            
Series F-1 Preferred Stock | F-1 Warrant                                  
Class of Stock [Line Items]                                  
Warrants and rights outstanding, term                       5 years          
Exercise price per share (in dollars per share) | $ / shares                       $ 8.994          
Series F-2 Preferred Stock                                  
Class of Stock [Line Items]                                  
Preferred stock, shares authorized (in shares)                       9,052 9,052 9,052      
Preferred stock, par value (in dollars per share) | $ / shares                       $ 0.0001 $ 0.0001        
Preferred stock, shares issued (in shares)                       1,153 1,153 1,153      
Preferred stock, shares outstanding (in shares)                       1,153 1,153 1,153      
Warrant to purchase shares (in shares)                             124,946    
Warrant liability | $         $ 300                        
Shares issued (in Shares)         1,153                        
Aggregate purchase price | $         $ 700                        
Common stock price per share (in dollars per share) | $ / shares         $ 9.228                        
Allocated proceeds liability warrants | $         $ 700                        
Fair value warrants remaining proceeds | $         $ 400                        
Series F-2 Preferred Stock | F-2 Warrant                                  
Class of Stock [Line Items]                                  
Warrants and rights outstanding, term                       5 years          
Exercise price per share (in dollars per share) | $ / shares                       $ 9.228