Note 7 - Other Current Assets, Net - Summary of Other Current Assets, Net (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Short-term loans to unrelated parties	$ 4,097	$ 4,097
Short-term loans interest receivables	341	250
Staff advances for business operations	11	5
Total other current assets	4,449	4,352
Allowance for credit loss	(1,580)	(1,558)
Other current assets, net	$ 2,869	$ 2,794