Accrued Expenses (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025
Accrued Expenses
Accrued research and development expenses	$ 2,645	$ 5,744
Accrued employee compensation and benefits	1,184	1,297
Accrued professional fees	465	345
Other accrued expenses	58	321
Total accrued expenses	$ 4,352	$ 7,707