Note 9 - Property and Equipment, Net - Property and Equipment, Net (Details) - USD ($) $ in Thousands		Jun. 30, 2021	Dec. 31, 2020
Property and equipment, gross		$ 2,402	$ 2,320
Less: accumulated depreciation		(2,286)	(2,260)
Property and equipment, net *	[1]	116	60
Vehicles [Member]
Property and equipment, gross		873	811
Office Equipment [Member]
Property and equipment, gross		908	894
Electronic Devices [Member]
Property and equipment, gross		$ 621	$ 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).