Other Balance Sheet Components - Schedule of Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Prepaid Expense and Other Assets, Current [Abstract]
Employee compensation and benefits	$ 1,522	$ 3,111
Professional fees	410	661
External R&D expenses	830	524
Other	108	537
Total accrued expenses	$ 2,870	$ 4,833