Balance Sheet Components - Components of Property, Plant, and Equipment (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	$ 1,474	$ 1,332
Less: Accumulated depreciation	(372)	(164)
Property and equipment, net	1,102	1,168
Computer equipment
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	706	442
Office furniture
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	724	0
Other
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	$ 44	$ 890