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Accrued liabilities
 12 Months Ended
Dec. 31, 2011
Accrued liabilities

14. Accrued liabilities

The major components of accrued liabilities are:

 

     December 31,  
     2011
(Restated,
see note 2)		      2010
(Restated,
see note 2)		  

Operating accruals

    $ 38,497       $ 48,044   

Accrued interest

      9,711         9,857   
  

 

 

     

 

 

  

Total

    $ 48,208       $ 57,901