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Warrants - Additional Information (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 6 Months Ended
Dec. 28, 2021
Aug. 06, 2021
Oct. 22, 2019
Sep. 12, 2019
Nov. 11, 2018
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Fair Value Assumptions Expected volatility Rate Maximum           82.97%   82.97% 74.80%
Fair Value Assumptions Risk Free Interest Rate Maximum           3.54%   3.54% 1.15%
Fair Value Assumptions Expected Term1             6 years 3 months    
Proceeds from private placement       $ 52,500          
Expected volatility             74.08%    
Risk-free interest rate             1.15%    
Silicon Valley Bank Loan [Member]                  
Warrant exercise per share $ 1.16 $ 2.22              
Number of warrants issued   432,844              
MD Anderson Warrant [Member]                  
Number of securities into which the class of warrant converted     3,333,333            
Warrant exercise per share     $ 0.001            
Fair value of adjustment of warrants     $ 14,500            
Warrant Expiry date     Dec. 31, 2026            
SVB Warrants [Member]                  
Common stock   432,844              
Exercise price   $2.22              
Warrants fully vested upon issuance   10 years              
Black-Scholes Model [Member] | Silicon Valley Bank Loan [Member]                  
Fair Value Assumptions Expected Term1 10 years                
Exercise price $1.16                
Expected volatility 81.00%                
Risk-free interest rate 1.49%                
Number of warrants issued 649,615                
Dividends $ 0                
Change in fair value $ 200                
Black-Scholes Model [Member] | SVB Warrants [Member]                  
Fair value of adjustment of warrants   $ 800              
Fair Value Assumptions Expected Term1   10 years              
Expected volatility   79.00%              
Risk-free interest rate   1.31%              
Dividends   $ 0              
Securities Purchase Agreement [Member]                  
Aggregate offering price         $ 47,100        
Private Placement [Member]                  
Number of securities into which the class of warrant converted       17,803,031 18,939,394        
Warrant exercise per share       $ 3.01 $ 3.01        
Fair value of adjustment of warrants         $ 18,400        
Fair Value Assumptions Expected volatility Rate Maximum         71.00%        
Fair Value Assumptions Risk Free Interest Rate Maximum         2.99%        
Fair Value Assumptions Expected Term1         5 years        
Placement agent fees and other expenses       $ 1,100          
Dividends         $ 0        
Private Placement [Member] | New Warrants [Member]                  
Number of securities into which the class of warrant converted       17,803,031          
Warrant exercise per share       $ 7.00          
Non-cash inducement warrant expense       $ 60,800