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ACCOUNTS RECEIVABLE (Tables)
9 Months Ended
Sep. 30, 2016
Receivables [Abstract]  
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]
Accounts receivable consisted of the following (amounts in thousands):
 
September 30,
2016
 
December 31,
2015
Accounts receivable
$
188,369

 
$
181,916

Allowance for doubtful accounts
(4,017
)
 
(4,527
)
Accounts receivable, net
$
184,352

 
$
177,389