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Prepaid Expenses and Other Current Assets (Tables)
6 Months Ended
Jun. 30, 2019
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]  
Schedule of prepaid expenses and other current assets

  

As of
June 30, 2019

  

As of
December 31, 2018

 
Prepaid expenses  $189,872   $142,528 
Other receivables(1)   467,721    493,289 
Total  $657,593   $635,817 

 

(1)This amount includes $450,000 due from a third party for the sale of assets. See Note 14.