XML 15 R19.htm IDEA: XBRL DOCUMENT v3.20.1
Notes Receivable (Tables)
3 Months Ended
Mar. 31, 2020
Receivables [Abstract]  
Schedule of notes receivable
  

March 31,

2020

  

December 31,

2019

 
Principal amounts of notes receivable  $250,000   $250,000 
Less: allowance for doubtful accounts   (50,000)   (50,000)
Notes receivable, net  $200,000   $200,000