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ACCOUNTS RECEIVABLE (Tables)
 12 Months Ended
Dec. 31, 2017
Accounts Receivable, Net [Abstract]  
Schedule of Accounts Receivable
Accounts receivable comprised the following at December 31, 2017 and December 31, 2016:
 
December 31, 2017

 
December 31, 2016

Third-party customers
$
168,805

 
$
149,957

Less: allowance for bad debts and credit notes
(9,902
)
 
(8,586
)
Total accounts receivable
$
158,903

 
$
141,371