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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, 2017 | Dec. 31, 2016
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U.S. |  |
Defined Benefit Plan, Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets |  |
Accumulated benefit obligation | $ 139,746 | $ 140,230
Fair value of plan assets | 109,845 | 100,905
Foreign |  |
Defined Benefit Plan, Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets |  |
Accumulated benefit obligation | 18,843 | 16,057
Fair value of plan assets | $ 13,618 | $ 11,142

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- Definition Amount of accumulated benefit obligation for defined benefit pension plan with accumulated benefit obligation in excess of plan assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e2417-114920 + Details
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- Definition Fair value of plan assets for defined benefit pension plan with accumulated benefit obligation in excess of plan assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e2417-114920 + Details
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