Note 12 - Taxation (Details Textual) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Operating Loss Carryforwards	$ 32,200		$ 32,200		$ 31,800
Operating Loss Carryforwards, Taxable Income Deduction Limitations	80.00%		80.00%
Deferred Tax Assets, Valuation Allowance	$ 13,116		$ 13,116		12,691
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount	260	$ 500	560	$ 820
PRC Subsidiary And VIE's [Member]
Operating Loss Carryforwards	$ 16,600		$ 16,600		$ 15,400