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Condensed Consolidated Statements Of Comprehensive Income (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Net income $ 25,433 $ 32,750
Other comprehensive income (loss), net of tax:    
Changes in net prior service credit and actuarial losses 2,042 1,851
Change in fair value of derivatives 1,463 (156)
Foreign currency translation (12,044) 13,699
Other comprehensive (loss) income (8,539) 15,394
Comprehensive income $ 16,894 $ 48,144