Financial Statement Components - Property and Equipment Under Finance Lease (Capital Lease Prior to Adoption of ASC 842) (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Total property and equipment, gross	$ 926
Less: accumulated depreciation	(261)
Property and equipment, net	665
Total property and equipment, gross		$ 926
Less: accumulated depreciation		(219)
Total property and equipment, net		707
Computer hardware and software
Property, Plant and Equipment [Line Items]
Total property and equipment, gross	88
Total property and equipment, gross		88
Machinery and equipment
Property, Plant and Equipment [Line Items]
Total property and equipment, gross	$ 838
Total property and equipment, gross		$ 838