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Related Party Transactions (Details) - USD ($)
1 Months Ended 3 Months Ended 5 Months Ended 6 Months Ended
Jan. 29, 2021
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2021
Jun. 30, 2021
Jun. 30, 2020
Related Party Transaction [Line Items]              
Gain on extinguishment of debt $ 0 $ 0 $ 0 $ 0 $ 0   $ 267,000
Affiliated Entity              
Related Party Transaction [Line Items]              
Related party interest expense 1,000 1,000 2,500   3,000   5,000
Affiliated Entity | Support service agreement with Ultrahuman services              
Related Party Transaction [Line Items]              
Expenses from transactions with related party 48,000   200,000       300,000
Affiliated Entity | Master services agreements with The Cambridge Partnership Limited              
Related Party Transaction [Line Items]              
Expenses from transactions with related party 17,000   28,000       52,000
Affiliated Entity | Master services agreements with The Foundry (Cambridge) Limited              
Related Party Transaction [Line Items]              
Expenses from transactions with related party 4,000   11,000       23,000
Affiliated Entity | Master services agreements with RxCelerate Limited              
Related Party Transaction [Line Items]              
Expenses from transactions with related party 400,000   800,000       2,300,000
Affiliated Entity | Master services agreements with RxBiologics Limited              
Related Party Transaction [Line Items]              
Expenses from transactions with related party 14,000   0       9,000
Affiliated Entity | Master services agreements with Cambridge Protein Works              
Related Party Transaction [Line Items]              
Expenses from transactions with related party $ 0 $ 145,000 $ 0   145,000   $ 11,000
Investor              
Related Party Transaction [Line Items]              
Payments to shareholders as reimbursement         $ 1,400,000    
Term Loan With Ultrahuman | Affiliated Entity | Centessa Predecessor Group              
Related Party Transaction [Line Items]              
Gain on extinguishment of debt           $ 264,000  
Term Loan With Ultrahuman | Affiliated Entity | Bank of England Official Rate | Centessa Predecessor Group              
Related Party Transaction [Line Items]              
Debt instrument, basis spread on variable rate           2.00%