Note 10 - Intangible Assets, Net - Intangible Assets, Net (Details) (Parentheticals)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Useful life (Year)	3 years 11 months 1 day
Cloud-Computing Based Software Platforms [Member]
Useful life (Year)	10 years	10 years
Licensing Agreements [Member]
Useful life (Year)	10 years	10 years
Livestreaming Technology [Member]
Useful life (Year)	5 years	5 years
Internet Ad Tracking System [Member]
Useful life (Year)	5 years
Other Computer Software [Member]
Useful life (Year)	3 years	3 years
Blockchain Integrated Framework Platform [Member]
Useful life (Year)	3 years
Bo!News Application [Member]
Useful life (Year)	3 years