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Interest And Other Income (Tables)
 12 Months Ended
Dec. 31, 2011
Interest And Other Income [Abstract]  
Interest And Other Income
                         
     Year Ended December 31,  
     2011      2010     2009  
     (in thousands)  

Third-party income from vertical integration services (a)

    $ 45,115      $ 169     $ —     

Alaskan Petroleum Production Tax credits and refunds (b)

      38,939        47,652       94,989  

Equity interest in income (loss) of EFS Midstream

      7,868        (819 )      —     

Eagle Ford Shale land fees

      3,747        —          —     

Other income

      3,937        4,565       3,631  

Deferred compensation plan income

      1,657        1,228       1,034  

Interest income

      697        4,177       1,935  
    

 

 

     

 

 

    

 

 

  

Total interest and other income

    $ 101,960      $ 56,972     $ 101,589  
    

 

 

     

 

 

    

 

 

  

(a)

Third-party income from vertical integration services represents the third-party working interests' share of earnings associated with Company-provided fracture stimulation, drilling and related services.

(b)

The Company earns Alaskan Petroleum Production Tax ("PPT") credits on qualifying capital expenditures. The Company recognizes income from PPT credits when they are realized through cash refunds or as reductions in production and ad valorem taxes if realizable as offsets to PPT expense.