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Comprehensive Income (Details) (USD $)
In Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2011
Jun. 30, 2010
Jun. 30, 2011
Jun. 30, 2010
Total Comprehensive income        
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