Annual report pursuant to Section 13 and 15(d)

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

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Convertible Redeemable Preferred Stock and Stockholders' Equity - Activity related to restricted stock award (Details) - $ / shares
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Shares    
Non-vested Ending Balance 2,514  
Restricted stock    
Shares    
Non-vested Beginning Balance 14,107 7,328
Granted 964,041 12,784
Vested (157,581) (5,404)
Forfeited (13,285) (601)
Non-vested Ending Balance 807,282 14,107
Weighted-Average Grant Date Fair Value    
Non-vested Beginning Balance $ 189.45 $ 343.36
Granted 0.96 118.30
Vested 9.57 227.96
Forfeited 4.86 206.26
Non-vested Ending Balance $ 2.49 $ 189.45
Restricted stock | 2020 Stock Incentive Plan    
Shares    
Non-vested Beginning Balance 2,161 4,403
Vested (2,000) (2,104)
Forfeited (94) (138)
Non-vested Ending Balance 67 2,161
Weighted-Average Grant Date Fair Value    
Non-vested Beginning Balance $ 238.33 $ 235.74
Vested 231.44 233.65
Forfeited 249.11 227.00
Non-vested Ending Balance $ 376.20 $ 238.33
Restricted stock units | 2020 Stock Incentive Plan    
Shares    
Vested (2,000) (2,104)
Restricted stock units | 2022    
Shares    
Non-vested Beginning Balance 3,700  
Granted   3,700
Vested (919) 0
Forfeited (250)  
Non-vested Ending Balance 2,531 3,700
Weighted-Average Grant Date Fair Value    
Non-vested Beginning Balance $ 52.00  
Granted   $ 52.00
Vested 52.00  
Forfeited 52.00  
Non-vested Ending Balance $ 52.00 $ 52.00