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Comprehensive Income
6 Months Ended
Jun. 30, 2011
Comprehensive Income [Abstract]  
Comprehensive Income
 
8.   Comprehensive Income
 
Total comprehensive income and its components are as follows:
 
                                 
    Quarter Ended
    Six Months Ended
 
    June 30,     June 30,  
    2011     2010     2011     2010  
 
(In thousands)
                               
Net earnings
  $ 43,457     $ 33,601     $ 78,983     $ 61,553  
Net unrealized gains (losses) on cash flow hedge, net of tax
    1,853       665       3,972       729  
Foreign currency translation adjustments
    (1,939 )     (22,050 )     28,105       (29,594 )
Amortization of net prior service costs and net actuarial losses, net of tax
    1,268       2,103       2,670       4,662  
                                 
Comprehensive income
  $ 44,639     $ 14,319     $ 113,730     $ 37,350