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Consolidated Statements Of Comprehensive Income (Loss) (Parenthetical) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Consolidated Statements Of Comprehensive Income (Loss) [Abstract]        
Foreign currency translation adjustment, (benefit) tax $ 42 $ 1,361 $ (592) $ 328
Derivative financial instruments adjustment, tax (benefit) (15) (441) (314) (152)
Amortization of prior service costs and net gains or losses, tax $ 1,337 $ 942 $ 2,673 $ 1,885