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ACCOUNTS RECEIVABLE (Tables)
3 Months Ended
Mar. 31, 2015
Receivables [Abstract]  
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]
Accounts receivable consisted of the following (amounts in thousands):
 
March 31,
2015
 
December 31,
2014
Accounts receivable
$
243,467

 
$
205,084

Allowance for doubtful accounts
(3,999
)
 
(5,706
)
Accounts receivable, net
$
239,468

 
$
199,378