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Note 9 - Property and Equipment, Net - Property and Equipment, Net (Details) - USD ($)
$ in Thousands
Mar. 31, 2021
Dec. 31, 2020
Property and equipment, gross $ 2,305 $ 2,320
Less: accumulated depreciation (2,244) (2,260)
Property and equipment, net * [1] 61 60
Vehicles [Member]    
Property and equipment, gross 805 811
Office Equipment [Member]    
Property and equipment, gross 890 894
Electronic Devices [Member]    
Property and equipment, gross $ 610 $ 615
[1] All of the VIEs' assets can be used to settle obligations of their primary beneficiary. Liabilities recognized as a result of consolidating these VIEs do not represent additional claims on the Company's general assets (Note 2).