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6. Prepaid Expenses (Tables)
9 Months Ended
Sep. 30, 2019
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]  
Schedule of prepaid expenses
   September 30,   December 31, 
   2019   2018 
Prepaid insurance costs  $12,156   $17,501 
Prepaid employee benefits   500    11,865 
Prepaid office and other costs   12,166    13,319 
Total prepaid expenses  $24,822   $42,685