Accrued Expenses and Other Current Liabilities - Schedule of Accrued Expenses and Other Current Liabilities (Detail) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Payables and Accruals [Abstract]
Accrued professional services and other	$ 1,436	$ 591
Accrued compensation and related expenses	1,015	2,486
Operating lease liabilities	$ 714	$ 693
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Accrued Expenses And Other Liabilities Current	Accrued Expenses And Other Liabilities Current
Accrued external research and development	$ 612	$ 462
Total accrued expenses and other current liabilities	$ 3,777	$ 4,232