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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME        
Net gain from curtailment, tax   $ 11,384   $ 11,384
Net actuarial gain (loss), tax (116) 6,617 (3,488) 6,617
Pension settlement expense, tax 353   1,789  
Amortization of unrecognized net periodic benefit costs, tax 261 1,115 467 2,229
Change in foreign currency translation, tax $ 65 $ (76) $ 41 $ (87)