Note 10 - Property and Equipment, Net - Property and Equipment, Net (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Property and equipment, cost	$ 2,119	$ 2,480
Less: accumulated depreciation	(1,904)	(2,231)
Property and equipment, net	215	249
Vehicles [Member]
Property and equipment, cost	520	855
Office Equipment [Member]
Property and equipment, cost	846	865
Electronic Devices [Member]
Property and equipment, cost	571	575
Leasehold Improvements [Member]
Property and equipment, cost	$ 182	$ 185