XML 39 R29.htm IDEA: XBRL DOCUMENT v3.8.0.1
Accounts Receivable (Tables)
3 Months Ended
Mar. 31, 2018
Accounts Receivable/Restricted Net Assets [Abstract]  
Schedule of accounts receivable
 
  March 31, 2018  December 31, 2017 
Accounts receivable $16,140,441  $17,208,585 
Less: allowance for doubtful accounts  (9,733,284)  (8,115,876)
  $6,407,157  $9,092,709