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Stockholders' Equity (Details 1) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2012
Dec. 31, 2011
Components of accumulated other comprehensive loss    
Foreign currency translation losses $ (1,672) $ (4,691)
Unrecognized pension and postretirement benefit costs, net of tax (15,462) (15,133)
Total accumulated other comprehensive loss $ (17,134) $ (19,824)