Annual report pursuant to Section 13 and 15(d)

Fixed Assets (Detail)

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Fixed Assets (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Property, Plant and Equipment [Line Items]    
Fixed assets, gross $ 1,100 $ 1,053
Less accumulated depreciation (652) (495)
Net fixed assets 448 558
Depreciation 166 159
Equipment    
Property, Plant and Equipment [Line Items]    
Fixed assets, gross 1,078 1,000
Furniture and fixtures    
Property, Plant and Equipment [Line Items]    
Fixed assets, gross $ 22 $ 53