Accrued Expenses (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Accrued Expenses
Employee compensation expenses	$ 1,733	$ 4,979
Research and development expenses	2,276	2,173
Deferred transaction consideration	3,094	3,927
Licensing expenses	900	8,645
Restructuring expenses (Note 13)		163
Other expenses	569	446
Total accrued expenses	$ 8,572	$ 20,333