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SUPPLEMENTAL CASH FLOW INFORMATION (Tables)
 3 Months Ended
Mar. 31, 2016
SUPPLEMENTAL CASH FLOW INFORMATION [Abstract]  
Supplemental cash flow information
Cash paid during the three months ended March 31, 2016 and 2015 for income taxes and interest is as follows:

  
Three Months Ended
March 31,
 
  
2016
  
2015
 
Income taxes
 
$
9,258
  
$
5,527
 
Interest
 
$
1,699
  
$
1,723