v3.26.1
Shanghai Adicet Biotechnology Co., Ltd. (the Adicet VIE) (Additional Information) (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Variable Interest Entity [Line Items]    
Expenses $ 21,570 $ 29,885
Research and development Expense 17,487 22,814
General and administrative Expense $ 4,083 $ 7,071