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5. Convertible Notes (Tables)
12 Months Ended
Dec. 31, 2020
Debt Disclosure [Abstract]  
Convertible Notes and Warrants

   December 31, 
   2020   2019 
         
Convertible notes  $953,000   $1,019,000 
Accrued interest   313,000    184,000 
Subtotal   1,266,000    1,203,000 
Convertible note discount   (83,000)   (153,000)
Total  $1,183,000   $1,050,000