Balance Sheet Details (Property and Equipment) (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Property, Plant and Equipment [Line Items]
Total	$ 24,838	$ 24,380
Less: accumulated depreciation	(12,138)	(11,821)
Property and equipment, net	12,700	12,559
Laboratory equipment
Property, Plant and Equipment [Line Items]
Total	20,136	19,678
Office and computer equipment
Property, Plant and Equipment [Line Items]
Total	438	438
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Total	817	817
Leasehold improvements
Property, Plant and Equipment [Line Items]
Total	$ 3,447	$ 3,447