v2.4.1.9
Supplemental Cash Flow Information (Tables)
12 Months Ended
Dec. 31, 2014
Supplemental Cash Flow Information [Abstract]  
Supplemental Cash Flow Information
  
Year ended December 31,
  
2014
 
2013
 
2012
Interest paid
$
40,287

 
$
23,646

 
$
13,916

Income taxes paid
$
75,258

 
$
48,869

 
$
51,768