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Retirement Plans And Postretirement Benefits (Fair Asset Values Of Plan Assets) (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 107,714	$ 136,874
Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	706	715
Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1,023	910
Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	26,685	26,003
Fair Value Measured at Net Asset Value Per Share [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	79,300	109,246
United States
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	80,006	109,961	$ 115,568
United States | Cash And Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	706	715
United States | Level 1 [Member] | Cash And Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	706	715
United States | Level 2 [Member] | Cash And Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
United States | Level 3 [Member] | Cash And Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Foreign
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	27,708	26,913	$ 25,082
Foreign | Foreign Government Bonds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1,023	910
Foreign | Fixed Insurance Contracts [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	26,685	26,003
Foreign | Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Foreign | Level 1 [Member] | Foreign Government Bonds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Foreign | Level 1 [Member] | Fixed Insurance Contracts [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Foreign | Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1,023	910
Foreign | Level 2 [Member] | Foreign Government Bonds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1,023	910
Foreign | Level 2 [Member] | Fixed Insurance Contracts [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Foreign | Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	26,685	26,003
Foreign | Level 3 [Member] | Foreign Government Bonds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Foreign | Level 3 [Member] | Fixed Insurance Contracts [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	26,685	26,003
Foreign | Fair Value, Inputs, Level 1, 2 and 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 27,708	$ 26,913

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+ References

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+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
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