Property and Equipment, Net - Summary of Property and Equipment, Net (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 1,266	$ 1,265
Less: accumulated depreciation	(971)	(938)
Property and equipment, net	295	327
Computer, office and other equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	834	822
Computer software
Property, Plant and Equipment [Line Items]
Property and equipment, gross	80	80
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property and equipment, gross	100	100
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 252	$ 263