Property and Equipment - Schedule of Property and Equipment, Net (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Property Plant And Equipment [Line Items]
Property and equipment, at cost	$ 0	$ 7,314
Less accumulated depreciation and amortization	0	(6,236)
Property and equipment, net	0	1,078
Laboratory Equipment
Property Plant And Equipment [Line Items]
Property and equipment, at cost	0	6,025
Computers and Purchased Software
Property Plant And Equipment [Line Items]
Property and equipment, at cost	0	644
Furniture and Fixtures
Property Plant And Equipment [Line Items]
Property and equipment, at cost	$ 0	$ 645