Note 15 - Taxation - Taxes Payable (Details) - USD ($) $ in Thousands		Jun. 30, 2019	Dec. 31, 2018
PRC turnover tax and surcharge payable		$ 1,303	$ 1,215
PRC enterprise income tax payable		1,779	1,782
Total taxes payable	[1]	$ 3,082	$ 2,997

[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).