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Property and Equipment - Schedule of Property and Equipment (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Property, Plant and Equipment [Abstract]    
Computer hardware and software $ 93 $ 46
Furniture and fixtures 98 42
Equipment 99
Leasehold improvements 53 42
Construction in progress 492
Property and equipment, gross 835 130
Less: accumulated depreciation (62) (11)
Property and equipment, net $ 773 $ 119