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Schedule of Changes in Stockholders' Equity (Details) - USD ($)
 3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Balance     $ 2,933,000 $ 8,503,000
Shares issued for warrant exercise       5,000
Equity-based compensation     496,000 211,000
Cash settlement of equity-based compensation     (24,000)  
Issuance of stock and options for services     11,000 173,000
Net loss $ (476,000) $ (2,687,000) (2,123,000) (4,276,000)
Balance 1,293,000 4,616,000 1,293,000 4,616,000
Common Stock [Member]        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Balance    
Balance, shares     12,934,741 12,905,112
Shares issued for warrant exercise      
Shares issued for warrant exercise, shares       986
Equity-based compensation    
Equity-based compensation, shares     165,779 5,000
Cash settlement of equity-based compensation      
Issuance of stock and options for services    
Issuance of stock and options for services, shares     4,094 23,643
Net loss    
Balance
Balance, shares 13,104,614 12,934,741 13,104,614 12,934,741
Additional Paid-in Capital [Member]        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Balance     $ 60,905,000 $ 60,341,000
Shares issued for warrant exercise       5,000
Equity-based compensation     496,000 211,000
Cash settlement of equity-based compensation     (24,000)  
Issuance of stock and options for services     11,000 173,000
Net loss    
Balance $ 61,388,000 $ 60,730,000 61,388,000 60,730,000
Retained Earnings [Member]        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Balance     (57,972,000) (51,838,000)
Shares issued for warrant exercise      
Equity-based compensation    
Cash settlement of equity-based compensation      
Issuance of stock and options for services    
Net loss     (2,123,000) (4,276,000)
Balance $ (60,095,000) $ (56,114,000) $ (60,095,000) $ (56,114,000)