v3.26.1
Other Significant Agreements - WuXi Biologics (Hong Kong) limited agreements (Details) - USD ($)
 1 Months Ended 3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Other Significant Agreements Paragon Option Agreement          
Research and development [1]   $ 67,301,000 $ 55,703,000 $ 128,120,000 $ 102,090,000
Biologics Master Services Agreement | WuXi Biologics          
Other Significant Agreements Paragon Option Agreement          
Prior notice period for termination of work order 6 months        
Threshold number of days for no termination or cancellation fee upon uncured breach after notice of such breach 30 days        
Threshold number of days for no termination or cancellation fee upon performance breach 90 days        
Research and development   $ 3,700,000 $ 3,300,000 $ 8,900,000 $ 4,500,000
Cell Line License Agreement | WuXi Biologics          
Other Significant Agreements Paragon Option Agreement          
Prior notice period for termination of work order 6 months        
Non-refundable license fee $ 150,000        
Threshold number of days for no termination or cancellation fee upon uncured breach after notice of such breach 60 days        
Threshold number of days for termination upon uncured material breach after notice of such breach 30 days        
[1] Includes related party amounts of $215 and $855 for the three and six months ended June 30, 2026, respectively, and $98 and $130 for the three and six months ended June 30, 2025, respectively.