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Accounts Receivable
3 Months Ended
Mar. 31, 2019
Receivables [Abstract]  
Accounts Receivable ACCOUNTS RECEIVABLE
Accounts receivable consist of the following:
 
As of
March 31, 2019
 
As of
December 31, 2018
Accounts receivable
$
77,879

 
$
90,675

Allowance for doubtful accounts
(1,642
)
 
(1,748
)
Total
$
76,237

 
$
88,927