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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, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Consolidated Statements Of Comprehensive Income (Loss) [Abstract]        
Foreign currency translation adjustment, (benefit) tax $ (1,361) $ 908 $ (328) $ 2,867
Derivative financial instruments adjustment, tax benefit 441 182 152 134
Amortization of prior service costs and net gains or losses, tax $ 942 $ 569 $ 1,885 $ 1,137