Note 10 - Intangible Assets, Net - Intangible Assets, Net (Details) - USD ($) $ in Thousands		Mar. 31, 2021	Dec. 31, 2020
Finite-lived intangible assets		$ 5,396	$ 4,251
Finite-lived intangible assets, Accumulated amortization		(1,360)	(1,258)
Finite-lived intangible assets, Impairment		(433)	(436)
Intangible assets, net *	[1]	3,603	2,557
Cloud-Computing Based Software Platforms [Member]
Finite-lived intangible assets		1,412	1,423
Finite-lived intangible assets, Accumulated amortization		(975)	(978)
Finite-lived intangible assets, Impairment		(433)	(436)
Intangible assets, net *		4	9
Internet Ad Tracking System [Member]
Finite-lived intangible assets		1,160
Finite-lived intangible assets, Accumulated amortization
Finite-lived intangible assets, Impairment
Intangible assets, net *		1,160
Livestreaming Technology [Member]
Finite-lived intangible assets		1,500	1,500
Finite-lived intangible assets, Accumulated amortization		(100)	(25)
Finite-lived intangible assets, Impairment
Intangible assets, net *		1,400	1,475
Licensing Agreements [Member]
Finite-lived intangible assets		1,205	1,208
Finite-lived intangible assets, Accumulated amortization		(166)	(135)
Finite-lived intangible assets, Impairment
Intangible assets, net *		1,039	1,073
Other Computer Software [Member]
Finite-lived intangible assets		119	120
Finite-lived intangible assets, Accumulated amortization		(119)	(120)
Finite-lived intangible assets, Impairment
Intangible assets, net *

[1] All of the VIEs' assets can be used to settle obligations of their primary beneficiary. Liabilities recognized as a result of consolidating these VIEs do not represent additional claims on the Company's general assets (Note 2).