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Amounts Included in Accumulated Other Comprehensive (Loss) Income, Net of Tax (Detail) (USD $)
In Thousands
Sep. 30, 2011
Dec. 31, 2010
Sep. 30, 2010
Accumulated Other Comprehensive Income (Loss) [Line Items]   
Foreign currency translation$ 4,903$ 17,276$ 19,763
Change in fair value of derivatives(6,757)(6,695)(8,951)
Unrecognized net periodic pension and other postretirement benefit costs:   
Net prior service credit6,1566,3916,573
Net actuarial loss(76,182)(79,998)(72,641)
Accumulated other comprehensive loss$ (71,880)$ (63,026)$ (55,256)