Note 14 - Taxation (Details Textual) $ in Thousands, $ in Millions		12 Months Ended
	Apr. 01, 2018 HKD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 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		$ 31,800	$ 31,000
Operating Loss Carryforwards, Taxable Income Deduction Limitations		80.00%
Deferred Tax Assets, Valuation Allowance		$ 12,691	12,271
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount		$ 830	$ 2,310
Minimum [Member]
PRC Value Added Tax Surcharge Rate		12.00%
PRC [Member]
PRC Value Added Tax Rate for Modern Service Provided		6.00%	6.00%
PRC Value Added Tax Rate for Modern Service Provided Small Scale Tax Payer		3.00%	3.00%
Other PRC Operating Entities [Member] | PRC [Member]
Applicable Income Tax Rate	25.00%	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		$ 15,400	$ 18,300
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%