Accrued Expenses (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Accrued Expenses
Accrued research and development expenses	$ 6,058	$ 5,172
Accrued employee compensation and benefits	740	1,142
Accrued professional fees	898	1,756
Other accrued expenses	448	8
Total accrued expenses	$ 8,144	$ 8,078