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Related Party Transactions (Additional Information) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Related Party Transaction [Line Items]      
Sublease income   $ 2,312 $ 1,979
General and administrative   31,256 38,138
Prepaid expenses and other current assets   1,001 5,989
Oxford Biomedica [Member]      
Related Party Transaction [Line Items]      
Sublease income   2,300 2,000
Expenses recognized under the transitional services   300 700
Amounts Due To Related Party Current And Noncurrent   300 500
General and administrative   $ 500 1,700
Prepaid expenses and other current assets     300
Oxford Biomedica [Member] | Vendor      
Related Party Transaction [Line Items]      
Amounts Paid To Related Party     1,100
Oxford Biomedica [Member] | Supply Agreement [Member]      
Related Party Transaction [Line Items]      
Clinical supply requirements   50.00%  
Purchase commitment amount   $ 29,700  
Purchases of drug substance   21,700 13,900
Amounts Due To Related Party Current And Noncurrent   3,100 5,200
Oxford Biomedica [Member] | Supply Agreement [Member] | Process Development Services [Member]      
Related Party Transaction [Line Items]      
Recorded purchases   7,400 12,500
Oxford Biomedica [Member] | Supply Agreement [Member] | Stability and Other Support [Member]      
Related Party Transaction [Line Items]      
Recorded purchases   $ 1,000 1,800
Oxford Biomedica [Member] | Transitional Services Agreement [Member]      
Related Party Transaction [Line Items]      
Amounts Due To Related Party Current And Noncurrent     100
Oxford Biomedica [Member] | Transitional Services Agreement [Member] | Vendor      
Related Party Transaction [Line Items]      
Amounts Due To Related Party Current And Noncurrent     $ 2,000
Oxford Biomedica [Member] | Forecast [Member] | Supply Agreement [Member]      
Related Party Transaction [Line Items]      
Purchase commitment amount $ 0