Annual report pursuant to Section 13 and 15(d)

Convertible Redeemable Preferred Stock and Stockholders' Equity (Details)

v3.24.1
Convertible Redeemable Preferred Stock and Stockholders' Equity (Details)
 12 Months Ended
Dec. 06, 2023
USD ($)
$ / shares
shares
Oct. 16, 2023
USD ($)
item
$ / shares
shares
Dec. 31, 2023
USD ($)
$ / shares
shares
Dec. 31, 2022
USD ($)
shares
Convertible Preferred Stock and Stockholders' Equity        
Proceeds from issuance of Series B preferred stock, net of issuance costs     $ 3,955,000  
Proceeds from the exercise of prefunded warrants and common stock warrants     12,533,000 $ 6,418,000
Change in fair value of warrant liability     $ (4,510,000) $ (2,852,000)
Number of shares outstanding | shares     38,335 0
Aggregate amount of redemption     $ 3,833,500  
Series B Preferred Stock        
Convertible Preferred Stock and Stockholders' Equity        
Number of shares issued upon conversion | shares     26,592,235  
Change in fair value of warrant liability     $ 554,000  
Number of shares converted | shares     110,278  
Unamortized discount     $ 6,063,000  
Amortization and accretion of discounts     297,000  
Deemed dividends     $ 6,360,000  
Number of shares outstanding | shares     38,335  
Aggregate amount of redemption     $ 3,833,500  
Series B Preferred Stock | Preferred Stock Warrants liability        
Convertible Preferred Stock and Stockholders' Equity        
Convertible note warrant     1,628,000  
Series B Preferred Stock | Common Stock Warrants liability        
Convertible Preferred Stock and Stockholders' Equity        
Convertible note warrant     $ 3,322,000  
October Public Offering        
Convertible Preferred Stock and Stockholders' Equity        
Number of shares called by each warrant | shares   2    
October Public Offering | Series B preferred stock        
Convertible Preferred Stock and Stockholders' Equity        
Number of shares called by each warrant | shares   1    
October Public Offering | Series B Units        
Convertible Preferred Stock and Stockholders' Equity        
Issuance of common stock and warrants, net of offering costs (in shares) | shares   87,000    
Proceeds from issuance of Series B preferred stock, net of issuance costs   $ 4,785,000    
Cash fees paid   $ 830,000    
October Public Offering | Series B Preferred Stock        
Convertible Preferred Stock and Stockholders' Equity        
Number of common shares per unit | item   1    
Term of conversion of temporary equity   2 years    
Conversion price | $ / shares   $ 0.4147    
Number of shares issued upon conversion | shares   241    
Redemption price per share | $ / shares   $ 100 $ 100  
Proceeds from issuance of Series B preferred stock, net of issuance costs   $ 2,311,000    
Beneficial conversion feature   1,909,000    
Issuance costs   401,000    
October Public Offering | Series B Preferred Stock | Preferred Stock Warrants liability        
Convertible Preferred Stock and Stockholders' Equity        
Convertible note warrant   $ 2,474,000    
October Public Offering | Series B Preferred Stock | Series B preferred stock        
Convertible Preferred Stock and Stockholders' Equity        
Number of common shares per unit | item   1    
Warrants exercise price | $ / shares   $ 55    
Dividend rate   20.00%    
Price per share | $ / shares   $ 55    
Issuance costs     $ 429,000  
Inducement Agreement | Series B Preferred Stock        
Convertible Preferred Stock and Stockholders' Equity        
Beneficial conversion feature     196,000  
Additional proceeds     569,000  
Issuance costs     $ 146,000  
Inducement Agreement | Series B Preferred Stock | Series B preferred stock        
Convertible Preferred Stock and Stockholders' Equity        
Warrants exercise price | $ / shares $ 35.72   $ 35.72  
Number of warrants exercised | shares     61,613  
Proceeds from the exercise of prefunded warrants and common stock warrants     $ 2,264,000  
Additional proceeds     $ 3,892,000  
Inducement Agreement | Series B Preferred Stock | New Common Stock Warrants        
Convertible Preferred Stock and Stockholders' Equity        
Number of shares called by each warrant | shares 482      
Warrants exercise price | $ / shares $ 0.1482      
Issuance costs $ 125,000      
Remaining warrants outstanding | shares     61,613