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Retirement Plans And Postretirement Benefits (Projected Future Pension Plan Cash Flow By Year) (Details) $ in Thousands	Dec. 31, 2020 USD ($)
United States
Defined Benefit Plan Disclosure [Line Items]
Expected employer contributions	$ 2,363
Expected employee contributions	0
2017	9,254
2018	9,211
2019	9,149
2020	9,022
2021	8,976
2026-2030	42,021
Foreign [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected employer contributions	886
Expected employee contributions	0
2017	1,102
2018	1,087
2019	1,229
2020	2,763
2021	1,330
2026-2030	$ 13,164

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Amount of benefit for defined benefit plan expected to be paid in five fiscal years after fifth fiscal year following current fiscal year.

+ References

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-Publisher FASB
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-Topic 715
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-Section 50
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