v3.20.1
Property and Equipment - Summary of Property and Equipment (Detail) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Property, Plant and Equipment [Line Items]    
Property and equipment, gross $ 1,467 $ 795
Less accumulated depreciation and amortization 609 257
Total 858 538
Machinery and Equipment [Member]    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross 224 109
Furniture and Fixtures [Member]    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross 371 113
Leasehold Improvements [Member]    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross $ 872 $ 573