Balance Sheet Components - Components of Property and Equipment - Net (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 2,889	$ 2,651
Less: accumulated depreciation	(2,367)	(2,017)
Total property and equipment - net	522	634
Computer Equipment and Software
Property Plant And Equipment [Line Items]
Property and equipment, gross	2,759	2,521
Leasehold Improvements
Property Plant And Equipment [Line Items]
Property and equipment, gross	94	94
Furniture
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 36	$ 36