Note 15 - Taxation - Taxes Payable (Details) - USD ($) $ in Thousands		Sep. 30, 2020	Dec. 31, 2019
PRC turnover tax and surcharge payable		$ 1,280	$ 1,244
PRC enterprise income tax payable		2,010	1,970
Total taxes payable	[1]	$ 3,290	$ 3,214

[1] All of the VIEs' assets can be used to settle obligations of their primary beneficiary. Furthermore, liabilities recognized as a result of consolidating these VIEs do not represent additional claims on the Company's general assets (Note 2).