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2. Summary of Significant Accounting Policies (Tables)
9 Months Ended
Sep. 30, 2019
Accounting Policies [Abstract]  
Schedule of Restricted Cash
   September 30,   December 31, 
   2019   2018 
Cash and cash equivalents  $630,109   $282,736 
Restricted cash   269,399    272,397 
Total  $899,508   $555,133