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Comprehensive Income
6 Months Ended
Jun. 30, 2011
Comprehensive Income  
Comprehensive Income
11.   COMPREHENSIVE INCOME

Total comprehensive income for the three and six months ended June 30, 2011 and 2010, respectively, is as follows (in thousands):

 

     Three Months Ended
June 30,
     Six Months Ended
June 30,
 
     2011      2010      2011      2010  

Net income

   $ 98,178       $ 85,461       $ 193,558       $ 160,449   

Other comprehensive income:

           

Actuarially determined long-term liability adjustments

     67         269         133         538   
                                   

Total other comprehensive income

     67         269         133         538   
                                   

Comprehensive income

   $ 98,245       $ 85,730       $ 193,691       $ 160,987   
                                   

Comprehensive income differs from net income due to net amortization of actuarial gains and losses associated with adoption of amendments to FASB ASC 715, Compensation – Retirement Benefits.