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Retirement Plans And Postretirement Benefits (Pension Plans With An Accumulated Benefit Obligation In Excess Of Plan Assets) (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
U.S. [Member]    
Defined Benefit Plan, Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets    
Accumulated benefit obligation $ 126,985 $ 139,746
Fair value of plan assets 99,845 109,845
Foreign [Member]    
Defined Benefit Plan, Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets    
Accumulated benefit obligation 20,601 18,843
Fair value of plan assets $ 14,396 $ 13,618