Property and Equipment, Net - Schedule of Property and Equipment Net (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 3,440	$ 1,770
Less: Accumulated depreciation and amortization	(1,055)	(752)
Property and equipment, net	2,385	1,018
Laboratory Equipment
Property Plant And Equipment [Line Items]
Property and equipment, gross	1,085	981
Furniture and Office Equipment
Property Plant And Equipment [Line Items]
Property and equipment, gross	396	227
Computer Equipment
Property Plant And Equipment [Line Items]
Property and equipment, gross	50	89
Software
Property Plant And Equipment [Line Items]
Property and equipment, gross	96	99
Leasehold Improvements
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 1,813	$ 374