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Note 9 - Property and Equipment, Net - Property and Equipment, Net (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Property and equipment, gross $ 2,320 $ 3,026
Less: accumulated depreciation (2,260) (2,948)
Property and equipment, net * [1] 60 78
Vehicles [Member]    
Property and equipment, gross 811 758
Office Equipment [Member]    
Property and equipment, gross 894 1,331
Electronic Devices [Member]    
Property and equipment, gross $ 615 $ 937
[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).