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Supplemental Cash Flow Information
6 Months Ended
Jun. 30, 2011
Supplemental Cash Flow Information [Abstract]  
Supplemental Cash Flow Information
16. Supplemental Cash Flow Information
                 
    Six Months Ended  
    June 30,  
    2011     2010  
Supplemental disclosure of cash flow information:
               
Interest paid
  $ 5.1     $ 0.9  
 
           
Income taxes paid
  $ 1.0     $ 0.3  
 
           
 
               
Supplemental disclosure of non-cash transactions:
               
Non-cash capital expenditures
  $ 0.7     $ 1.8