Note 9 - Property and Equipment, Net - Property and Equipment, Net (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Property and equipment, gross	$ 2,266	$ 2,480
Less: accumulated depreciation	(2,101)	(2,231)
Property and equipment, net	165	249
Vehicles [Member]
Property and equipment, gross	689	855
Office Equipment [Member]
Property and equipment, gross	839	865
Electronic Devices [Member]
Property and equipment, gross	559	575
Leasehold Improvements [Member]
Property and equipment, gross	$ 179	$ 185