Note 6 - Property and Equipment - Schedule of Property and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Total property and equipment–at cost	$ 7,165	$ 7,135
Less: Accumulated depreciation and amortization	(6,267)	(5,568)
Property and equipment, net	898	1,567
Equipment [Member]
Total property and equipment–at cost	5,167	5,137
Furniture and Fixtures [Member]
Total property and equipment–at cost	22	22
Leasehold Improvements [Member]
Total property and equipment–at cost	1,612	1,612
Software Development [Member]
Total property and equipment–at cost	$ 364	$ 364