Note 9 - Property and Equipment, Net - Property and Equipment, Net (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Mar. 31, 2025	Dec. 31, 2024
Property and equipment, gross		$ 1,911	$ 1,838
Less: accumulated depreciation		(1,750)	(1,722)
Property and equipment, net	$ 161	161	116
Vehicles [Member]
Property and equipment, gross		444	442
Office Equipment [Member]
Property and equipment, gross		863	834
Electronic Devices [Member]
Property and equipment, gross		565	562
Leasehold Improvements [Member]
Property and equipment, gross		$ 39	$ 0