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Consolidated Statements of Operations - USD ($)
 3 Months Ended 12 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Dec. 31, 2022
Dec. 31, 2021
Costs and expenses:        
Selling, general and administrative compensation $ 40,000 $ 123,000   $ 398,000
Research & development 179,000 168,000 $ 1,226,000 1,080,000
Professional services 280,000 126,000   552,000
Depreciation and amortization 280,000 278,000 1,113,000 1,113,000
Other general expense 40,000 14,000   42,000
Total costs and expenses 819,000 709,000   3,185,000
Operating loss (819,000) (709,000)   (3,185,000)
Other income (expense):        
Interest income 3,000 96,000   165,000
Other income (expense) 68,000   77,000
Interest expense (101,000) (133,000)   (300,000)
Impairment of investment  
Loss from continuing operations (849,000) (746,000)   (3,243,000)
Income tax (loss)/benefit 621,000 1,395,000
Net loss (849,000) (746,000)   (1,848,000)
Loss from continuing operations attributed to noncontrolling interest 192,000 77,000   545,000
Net loss attributable to common stockholders $ (657,000) $ (669,000)   $ (1,303,000)
Loss per common share:        
Basic $ (0.00) $ (0.01)   $ (0.00)
Diluted  
Shares used in computing loss per common share:        
Basic 3,877,282,251 3,877,282,251   3,877,282,251
Diluted 3,877,282,251 3,877,282,251   3,877,282,251
Income tax benefit (621,000) $ (1,395,000)
Previously Reported [Member]        
Costs and expenses:        
Selling, general and administrative compensation     325,000  
Research & development     1,226,000  
Professional services     722,000  
Depreciation and amortization     1,113,000  
Other general expense     68,000  
Total costs and expenses     3,454,000  
Operating loss     (3,454,000)  
Other income (expense):        
Interest income     24,000  
Other income (expense)     116,000  
Interest expense     (462,000)  
Impairment of investment     (4,100,000)  
Loss from continuing operations     (7,876,000)  
Income tax (loss)/benefit     621,000  
Net loss     (7,255,000) $ (1,848,000)
Loss from continuing operations attributed to noncontrolling interest     204,000  
Net loss attributable to common stockholders     $ (7,051,000)  
Loss per common share:        
Basic     $ (0.00)  
Diluted      
Shares used in computing loss per common share:        
Basic     3,877,282,251  
Diluted     3,877,282,251  
Income tax benefit     $ (621,000)