Note 7 - Other Current Assets, Net - Summary of Other Current Assets, Net (Details) - USD ($) $ in Thousands		Jun. 30, 2022	Dec. 31, 2021
Short-term loans to unrelated parties		$ 2,197	$ 1,646
Short-term loans interest receivables		12	0
Staff advances for business operations		10	11
Total other current assets		2,219	1,657
Allowance for doubtful accounts		(617)	0
Other current assets, net	[1]	$ 1,602	$ 1,657

[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).