Balance Sheet Details - Schedule of Property and Equipment (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 1,007	$ 408
Less accumulated depreciation	(161)	(110)
Total	846	298
Laboratory Equipment and Manufacturing Equipment
Property Plant And Equipment [Line Items]
Property and equipment, gross	312	308
Furniture and Fixtures
Property Plant And Equipment [Line Items]
Property and equipment, gross	98
Computer Equipment
Property Plant And Equipment [Line Items]
Property and equipment, gross	92	53
Leasehold Improvements
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 505	$ 47

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 before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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