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ACCOUNTS RECEIVABLE (Tables)
12 Months Ended
Dec. 31, 2016
Receivables [Abstract]  
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]
Accounts receivable at December 31, 2016 and 2015, consisted of the following (amounts in thousands):
 
2016
 
2015
Accounts receivable
$
182,728

 
$
181,916

Allowance for doubtful accounts
(3,344
)
 
(4,527
)
Accounts receivable, net
$
179,384

 
$
177,389