Note 8 - Other Current Assets, Net - Summary of Other Current Assets, Net (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Short-term loans to unrelated parties	$ 2,197	$ 1,646
Short-term loans interest receivables	22	0
Staff advances for business operations	8	11
Total other current assets	2,227	1,657
Allowance for doubtful accounts	(617)	0
Other current assets, net	$ 1,610	$ 1,657