Accrued expenses and other current liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Payables and Accruals [Abstract]
Accrued research and development	$ 11,243	$ 9,824
Accrued compensation and benefits	7,344	6,831
Other	2,043	3,114
Total accrued expenses and other current liabilities	20,630	$ 19,769
Wind down activities	$ 3,100