Note 10 - Intangible Assets, Net - Intangible Assets, Net (Details) - USD ($) $ in Thousands		Jun. 30, 2021	Dec. 31, 2020
Finite-lived intangible assets		$ 5,425	$ 4,251
Finite-lived intangible assets, Accumulated amortization		(1,547)	(1,258)
Finite-lived intangible assets, Impairment		(440)	(436)
Intangible assets, net *	[1]	3,438	2,557
Cloud-Computing Based Software Platforms [Member]
Finite-lived intangible assets		1,437	1,423
Finite-lived intangible assets, Accumulated amortization		(997)	(978)
Finite-lived intangible assets, Impairment		(440)	(436)
Intangible assets, net *		0	9
Internet Ad Tracking System [Member]
Finite-lived intangible assets		1,161
Finite-lived intangible assets, Accumulated amortization		(58)
Finite-lived intangible assets, Impairment		0
Intangible assets, net *		1,103
Livestreaming Technology [Member]
Finite-lived intangible assets		1,500	1,500
Finite-lived intangible assets, Accumulated amortization		(175)	(25)
Finite-lived intangible assets, Impairment		0	0
Intangible assets, net *		1,325	1,475
Licensing Agreements [Member]
Finite-lived intangible assets		1,206	1,208
Finite-lived intangible assets, Accumulated amortization		(196)	(135)
Finite-lived intangible assets, Impairment		0	0
Intangible assets, net *		1,010	1,073
Other Computer Software [Member]
Finite-lived intangible assets		121	120
Finite-lived intangible assets, Accumulated amortization		(121)	(120)
Finite-lived intangible assets, Impairment		0	0
Intangible assets, net *		$ 0	$ 0

[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).