Balance Sheet Components - Property and Equipment, net (Details) - USD ($) $ in Thousands	6 Months Ended
Jun. 30, 2021	Dec. 31, 2020
Property and Equipment, net
Property and equipment, gross	$ 104,201	$ 83,402
Less: Accumulated depreciation and amortization	(55,317)	(50,054)
Total Property and Equipment, net	48,884	33,348
Depreciation expense	5,300
Impairment	0
Machinery and equipment
Property and Equipment, net
Property and equipment, gross	58,432	51,001
Furniture and fixtures
Property and Equipment, net
Property and equipment, gross	$ 1,376	1,376
Useful Life	3 years
Computer equipment
Property and Equipment, net
Property and equipment, gross	$ 2,772	2,428
Useful Life	3 years
Capitalized software held for internal use
Property and Equipment, net
Property and equipment, gross	$ 7,582	7,417
Useful Life	3 years
Leasehold improvements
Property and Equipment, net
Property and equipment, gross	$ 14,952	14,810
Construction-in-process
Property and Equipment, net
Property and equipment, gross	$ 19,087	$ 6,370
Minimum \| Machinery and equipment
Property and Equipment, net
Useful Life	3 years
Maximum \| Machinery and equipment
Property and Equipment, net
Useful Life	5 years

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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