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Commitments and Contingencies - Additional Information (Detail)
$ in Thousands
1 Months Ended 4 Months Ended 12 Months Ended
Dec. 31, 2021
USD ($)
ft²
Dec. 31, 2021
USD ($)
ft²
Dec. 31, 2019
USD ($)
shares
Dec. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Dec. 31, 2019
USD ($)
Sep. 30, 2019
USD ($)
Commitment And Contingencies [Line Items]              
Research and development expenses       $ 31,729 $ 35,814    
Executive insurance reserve       5,000      
License Agreement With The University Of Colorado [Member]              
Commitment And Contingencies [Line Items]              
Development and sales milestone payment payable       $ 2,200      
Percentage of sublicense fees       15.00%      
Period of obligation to pay royalties       20 years      
Research and development expenses       $ 0 50    
License Agreement With Bristol Mayers Equib Company [Member]              
Commitment And Contingencies [Line Items]              
Percentage of sublicense fees     60.00%        
Period of obligation to pay royalties     12 years        
Upfront payment made     $ 8,000        
Commercial milestone payment payable     $ 215,000     $ 215,000  
Royalty as a percentage of sales     10.00%        
In process research and development expense recognized           14,600  
License Agreement With Bristol Mayers Equib Company [Member] | Cash Consideration [Member]              
Commitment And Contingencies [Line Items]              
In process research and development expense recognized           8,000  
License Agreement With Bristol Mayers Equib Company [Member] | Temporary Equity [Member]              
Commitment And Contingencies [Line Items]              
In process research and development expense recognized           6,600  
License Agreement With Bristol Mayers Equib Company [Member] | Maximum [Member] | Tranche One [Member]              
Commitment And Contingencies [Line Items]              
Development and sales milestone payment payable     $ 49,000     49,000  
License Agreement With Bristol Mayers Equib Company [Member] | Maximum [Member] | Tranche Two [Member]              
Commitment And Contingencies [Line Items]              
Development and sales milestone payment payable             $ 49,000
License Agreement With Bristol Mayers Equib Company [Member] | Maximum [Member] | Tranche Three [Member]              
Commitment And Contingencies [Line Items]              
Development and sales milestone payment payable             49,000
License Agreement With Bristol Mayers Equib Company [Member] | Minimum [Member] | Tranche One [Member]              
Commitment And Contingencies [Line Items]              
Development and sales milestone payment payable     $ 32,000     $ 32,000  
License Agreement With Bristol Mayers Equib Company [Member] | Minimum [Member] | Tranche Two [Member]              
Commitment And Contingencies [Line Items]              
Development and sales milestone payment payable             32,000
License Agreement With Bristol Mayers Equib Company [Member] | Minimum [Member] | Tranche Three [Member]              
Commitment And Contingencies [Line Items]              
Development and sales milestone payment payable             $ 32,000
License Agreement With Bristol Mayers Equib Company [Member] | Series A Redeemable Preferred Stock [Member]              
Commitment And Contingencies [Line Items]              
Stock issued during period shares purchase of assets | shares     6,628,788        
Waltham Massauchets [Member]              
Commitment And Contingencies [Line Items]              
Office space leased | ft² 15,000 15,000          
Operating lease expiration year and month 2031-12            
Lessee, operating lease, lease not yet commenced, renewal term 5 years 5 years          
Sublease aggregate base rent obligation $ 970 $ 970          
Percentage increase in initial annual base rent per square foot.   3.00%          
Annual Rent Operating lease Aggregate After Increase   $ 11,100          
Security deposit         647    
Operating lease weighted average remaining lease term       8 years      
Operating lease weighted average discount rate       7.50%      
Waltham Massauchets [Member] | Restricted Cash And Cash Equivalents Non Current [Member]              
Commitment And Contingencies [Line Items]              
Lessee tenant improvement allowance         $ 400