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Note 6 - Property and Equipment - Schedule of Property and Equipment (Details) - USD ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Total property and equipment–at cost $ 6,714 $ 7,165
Less: Accumulated depreciation and amortization (6,361) (6,267)
Property and equipment, net 353 898
Equipment [Member]    
Total property and equipment–at cost 4,716 5,167
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