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SUPPLEMENTAL CASH FLOW INFORMATION (Tables)
9 Months Ended
Sep. 30, 2012
Supplemental Cash Flow Information
     Nine Months Ended
September 30,
 
     2012      2011  
     (in thousands)  

Net cash provided from operating activities included:

     

Income taxes paid to taxing authorities

   $ 436       $ 309   

Interest paid

     99,828         95,536   

Non-cash investing and financing activities included:

     

Asset retirement costs capitalized, net

     29,695         13,569