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License Revenue (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Disaggregation of Revenue [Line Items]        
License revenue $ 0 $ 0 $ 3,600 $ 0
Lexeo Therapeutics, Inc        
Disaggregation of Revenue [Line Items]        
License revenue     $ 3,500