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Sale of Cullinan Pearl and Co-Development Agreement with Taiho - Additional Information (Details) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Defined Benefit Plan Disclosure [Line Items]          
Repayment of convertible notes       $ 0 $ 2,200
net of cash transferred       2,898  
Gain on sale of Cullinan Pearl   $ 0 $ (276,785) 0 (276,785)
Payment held in escrow       5,000  
Research and development   27,391 26,411 79,487 50,947
Prepaid expenses and other current assets   619   619  
Pearl - Taiho          
Defined Benefit Plan Disclosure [Line Items]          
Repayment of convertible notes         2,200
net of cash transferred $ 2,900        
Additional receive payments from the party 130,000        
Receive upfront payment from party 275,000        
Gain on sale of Cullinan Pearl     $ (276,800)   $ (276,800)
Payment held in escrow $ 5,000        
Percentage of profits from potential sales 50.00%        
Research and development   2,100   3,100  
Research and development expense related to share of costs   $ 5,500   $ 10,200