Note 13 - Taxation (Details Textual) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Operating Loss Carryforwards	$ 32,000		$ 32,000		$ 31,000
Operating Loss Carryforwards, Taxable Income Deduction Limitations					80.00%
Deferred Tax Assets, Valuation Allowance	12,831		12,831		$ 12,271
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount	500	$ 1,650	820	$ 1,960
PRC Subsidiary And VIE's [Member]
Operating Loss Carryforwards	$ 20,100		$ 20,100		$ 18,300