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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2012
Mar. 31, 2011
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME [Abstract]    
Net earnings $ 5,194 $ 6,707
Other comprehensive income (loss), net of tax:    
Foreign currency translation adjustments 1,069 935
Amortization of:    
Prior service benefit (1,196) (1,612)
Unrecognized loss 713 355
Foreign currency exchange rate changes 16 13
Income tax related to pension and postretirement plans 186 503
Pension and post retirement plans, net of tax (281) (741)
Total other comprehensive income, net of tax 788 194
Comprehensive income $ 5,982 $ 6,901