Quarterly report pursuant to Section 13 or 15(d)

Convertible Redeemable Preferred Stock and Stockholders' Equity - Activity related to restricted stock awards (Details)

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Convertible Redeemable Preferred Stock and Stockholders' Equity - Activity related to restricted stock awards (Details) - $ / shares
6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Shares    
Non-vested Ending Balance 16  
Restricted stock    
Shares    
Non-vested Beginning Balance 5,382  
Granted 255,915  
Vested (774)  
Forfeited (82)  
Non-vested Ending Balance 260,441  
Weighted-Average Grant Date Fair Value    
Non-vested Beginning Balance $ 374.00  
Granted 2.64  
Vested 674.09  
Forfeited 681.69  
Non-vested Ending Balance $ 9.22  
Restricted stock | 2020 Stock Incentive Plan    
Shares    
Vested (1) 0
Restricted stock units | 2020 Stock Incentive Plan    
Shares    
Non-vested Beginning Balance 1  
Vested (1)  
Weighted-Average Grant Date Fair Value    
Non-vested Beginning Balance $ 56,430.00  
Vested $ 56,430.00  
Restricted stock units | 2022    
Shares    
Non-vested Beginning Balance 17  
Vested (3) 0
Non-vested Ending Balance 14  
Weighted-Average Grant Date Fair Value    
Non-vested Beginning Balance $ 7,800.00  
Vested 7,800.00  
Non-vested Ending Balance $ 7,800.00