Note 9 - Property and Equipment, Net - Property and Equipment, Net (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Property and equipment, cost	$ 2,034	$ 2,119
Less: accumulated depreciation	(1,876)	(1,904)
Property and equipment, net	158	215
Vehicles [Member]
Property and equipment, cost	446	520
Office Equipment [Member]
Property and equipment, cost	841	846
Electronic Devices [Member]
Property and equipment, cost	567	571
Leasehold Improvements [Member]
Property and equipment, cost	$ 180	$ 182