Note 5 - Property and Equipment - Schedule of Property and Equipment (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Total property and equipment–at cost	$ 6,739	$ 6,714
Less: Accumulated depreciation	(6,620)	(6,361)
Property and equipment, net	119	353
Equipment [Member]
Total property and equipment–at cost	4,741	4,716
Leasehold Improvements [Member]
Total property and equipment–at cost	1,612	1,612
Software Development [Member]
Total property and equipment–at cost	364	364
Furniture and Fixtures [Member]
Total property and equipment–at cost	$ 22	$ 22