Accrued Expenses and Other Current Liabilities - Schedule of Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Accrued Expenses And Other Current Liabilities [Abstract]
Contracted research and development expenses	$ 8,434	$ 7,486
Due to Taiho under collaboration agreement, net	7,869	0
Employee compensation	6,987	4,516
Other current liabilities	914	1,955
Convertible note and accrued interest	0	178
Accrued Expenses And Other Current Liabilities	$ 24,204	$ 14,135