Note 14 - Taxation (Details Textual) $ in Thousands, $ in Millions		12 Months Ended
	Apr. 01, 2018 HKD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent		21.00%	21.00%
Income Tax Withholding Rate Pursuant to EIT Law		10.00%
Operating Loss Carryforwards, Total		$ 31,000	$ 23,300
Operating Loss Carryforwards, Taxable Income Deduction Limitations		80.00%
Deferred Tax Assets, Valuation Allowance, Total		$ 12,271	10,245
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount		$ 2,310	$ 920
Minimum [Member]
PRC Value Added Tax Surcharge Rate		12.00%
PRC [Member]
PRC Value Added Tax Rate for Modern Service Provided		6.00%
Other PRC Operating Entities [Member] | PRC [Member]
Applicable Income Tax Rate		25.00%	25.00%
Business Opportunity Online [Member] | PRC [Member]
Applicable Income Tax Rate		25.00%	15.00%
PRC Subsidiary And VIE's [Member]
Operating Loss Carryforwards, Total		$ 18,300	$ 24,500
HONG KONG
Applicable Income Tax Rate for First Profit Limit	8.25%
Taxable Profits for Applicable Income Tax Rate	$ 2
Applicable Income Tax Rate for Subsequent Profit	16.50%