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Retirement Plans And Postretirement Benefits (Fair Value Hierarchy, Assets At Fair Value) (Details) - Pension Plan [Member] - Fixed Insurance Contracts [Member] - Level 3 [Member] - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Changes in Plan Assets:    
Beginning Balance $ 12,787 $ 11,142
Gain / contributions / currency impact 1,619 1,651
Distributions (10) (6)
Ending Balance $ 14,396 $ 12,787