Property and Equipment, Net - Property and Equipment (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Property, Plant and Equipment [Line Items]
Total property and equipment, cost	$ 26,913	$ 26,593
Less accumulated depreciation	(13,429)	(11,171)
Property and equipment, net	13,484	15,422
Lab equipment
Property, Plant and Equipment [Line Items]
Total property and equipment, cost	3,307	3,259
Manufacturing equipment
Property, Plant and Equipment [Line Items]
Total property and equipment, cost	7,700	6,326
Office equipment
Property, Plant and Equipment [Line Items]
Total property and equipment, cost	30	19
Leasehold improvements
Property, Plant and Equipment [Line Items]
Total property and equipment, cost	15,418	15,396
Software
Property, Plant and Equipment [Line Items]
Total property and equipment, cost	285	285
Construction in progress
Property, Plant and Equipment [Line Items]
Total property and equipment, cost	$ 173	$ 1,308