Property and Equipment, Net - Schedule of Property and Equipment Net (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 1,770	$ 1,341
Less: Accumulated depreciation and amortization	(752)	(487)
Property and equipment, net	1,018	854
Laboratory Equipment
Property Plant And Equipment [Line Items]
Property and equipment, gross	981	651
Furniture and Office Equipment
Property Plant And Equipment [Line Items]
Property and equipment, gross	227	209
Computer Equipment
Property Plant And Equipment [Line Items]
Property and equipment, gross	89	111
Software
Property Plant And Equipment [Line Items]
Property and equipment, gross	99	99
Leasehold Improvements
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 374	$ 271

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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