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Accounts Receivable (Tables)
12 Months Ended
Dec. 31, 2016
Accounts Receivable[Abstract]  
Schedule of accounts receivable
  As of December 31,  Increase 
  2016  2015  (Decrease) 
Trade accounts receivable, gross $1,013,716  $736,195  $277,521 
Allowance for bad debt and product returns  (21,326)  (18,092)  (3,234)
Trade accounts receivable, net $992,390  $718,103  $274,287