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ACCOUNTS RECEIVABLE (Tables)
 9 Months Ended
Sep. 30, 2017
Receivables [Abstract]  
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Accounts receivable consisted of the following as of the dates set forth below (amounts in thousands):
 
September 30,
2017
 
December 31,
2016
Accounts receivable
$
239,095

 
$
182,728

Allowance for doubtful accounts
(2,879
)
 
(3,344
)
Accounts receivable, net
$
236,216

 
$
179,384