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Other Current Liabilities (Tables)
6 Months Ended
Jun. 30, 2012
Other Current Liabilities  
Schedule of other current liabilities

 

 
  June 30,
2012
  December 31,
2011
 
 
  (in thousands)
 

Other derivative agreements (realized)

  $   $  

Other derivative agreements (unrealized)

    6,056      

Accrued interest

    17,610     17,867  

Partnership interest rate swap

    927     905  

Other liabilities

    15,130     15,655  
           

 

  $ 39,723   $ 34,427