Property and Equipment, net - Summary of Property And Equipment, Net (Detail) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 3,903	$ 1,043
Less: Accumulated depreciation and amortization	(330)	(98)
Property and equipment, net	3,573	945
Machinery and equipment
Property, Plant and Equipment [Line Items]
Total property and equipment	1,094	130
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Total property and equipment	91	67
IT hardware and software
Property, Plant and Equipment [Line Items]
Total property and equipment	1,104	820
Leasehold improvements
Property, Plant and Equipment [Line Items]
Total property and equipment	20	26
Construction in progress
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 1,594	$ 0