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Stock-Based Compensation - Narrative (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Non-cash stock-based compensation     $ 8,806,188 $ 19,281,108
Total unrecognized compensation cost related to unvested stock options $ 5,900,000   $ 5,900,000  
Period over which total unrecognized compensation cost related to unvested stock options will be recognized (in years)     1 year 4 months 24 days  
Weighted average grant date fair value (in dollars per share) $ 0.42 $ 1.73 $ 0.94 $ 2.34
J. Joseph Kim        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Settled in cash percentage     50.00%  
Settled in shares percentage     50.00%  
Employees and Directors        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Non-cash stock-based compensation $ 1,900,000 $ 3,000,000 $ 8,300,000 $ 19,000,000
Employees and Directors | Research and Development Expense        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Allocated share-based compensation expense 846,000 1,400,000 3,500,000 7,300,000
Employees and Directors | General and Administrative Expense        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Allocated share-based compensation expense 1,100,000 1,600,000 4,800,000 11,700,000
Non Employee        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Non-cash stock-based compensation 153,000 $ 235,000 519,000 $ 1,200,000
Restricted Stock Units        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Total unrecognized compensation cost related to unvested stock options $ 4,600,000   $ 4,600,000  
Period over which total unrecognized compensation cost related to unvested stock options will be recognized (in years)     1 year 7 months 6 days  
Weighted average grant date fair value, restricted stock units (in dollars per share) $ 0.53 $ 2.29 $ 0.86 $ 3.12