Note 7 - Other Current Assets, Net - Summary of Other Current Assets, Net (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Short-term loans to unrelated parties	$ 4,097	$ 2,197
Short-term loans interest receivables	71	22
Staff advances for business operations	9	8
Total other current assets	4,177	2,227
Allowance for credit loss	(850)	(617)
Other current assets, net	$ 3,327	$ 1,610