Property and Equipment, Net - Summary of Property and Equipment, Net (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 1,215	$ 1,077
Less: accumulated depreciation	(546)	(501)
Property and equipment, net	669	576
Computer, office and other equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	783	659
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	$ 238