Note 7 - Due from Related Parties, Net - Due From Related Parties (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Allowance for doubtful accounts	$ (3,987)	$ (3,760)	$ (2,236)
Guangzhou Gong Xiang Technology Co. [Member]
Due from related parties, total	0	14
Related Party [Member]
Due from related parties, total	0	14
Allowance for doubtful accounts	0	(14)
Due from related parties, net	$ 0	$ 0