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ACCOUNTS RECEIVABLE (Details) - USD ($)
$ in Thousands
Mar. 31, 2017
Dec. 31, 2016
Receivables [Abstract]    
Accounts Receivable, Gross $ 235,123 $ 182,728
Allowance for Doubtful Accounts Receivable 2,879 3,344
Accounts Receivable, Net $ 232,244 $ 179,384