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Condensed Consolidated Statements of Operations (Unaudited) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Revenue, net:    
License revenue $ 393 $ 313
Operating expenses:    
Selling, general and administrative 1,081 1,322
Write-off of patents and trademarks 88
Depreciation & amortization 95 133
Total operating expenses 1,264 1,455
Loss from operations (871) (1,142)
Other income (expense):    
Interest expense and other financing costs (2)
Miscellaneous income 205 333
Total other income, net 203 333
Loss from continuing operations before income taxes (668) (809)
Income tax benefit 32
Loss from continuing operations, net of income taxes (636) (809)
(Loss) income from discontinued operations, net of income taxes (17) 75
Net loss $ (653) $ (734)
Loss per common share, basic and diluted:    
Continuing operations, Loss per common share, basic (in Dollars per share) $ (0.06) $ (0.07)
Continuing operations, Loss per common share, diluted (in Dollars per share) (0.06) (0.07)
Discontinued operations, net loss per common share basic (in Dollars per share) 0 0.01
Discontinued operations, net loss per common share diluted (in Dollars per share) 0 0.01
Net loss per common share, basic (in Dollars per share) (0.06) (0.06)
Net loss per common share, diluted (in Dollars per share) $ (0.06) $ (0.06)
Weighted average common shares, basic (in Shares) 11,552,000 11,532,000
Weighted average common shares, diluted (in Shares) 11,552,000 11,532,000