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Retirement Plans And Postretirement Benefits (Components Of Net Postretirement Costs) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
U.S. [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Service cost | $ 1,315 | $ 1,305 | $ 1,325
Interest cost | 4,709 | 5,352 | 5,744
Mark-to-market loss (gain) loss | 2,473 | (4,140) | (2,322)
Net Cost | 2,818 | (2,751) | (193)
Foreign [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Service cost | 674 | 710 | 698
Interest cost | 253 | 199 | 243
Mark-to-market loss (gain) loss | 503 | (53) | (220)
Net Cost | 1,100 | 557 | 423
Postretirement Benefit Costs [Member] | U.S. [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Service cost | 0 | 0 | 0
Interest cost | 264 | 333 | 360
Plan amendment / curtailment | 0 | 0 | 0
Mark-to-market loss (gain) loss | 1,028 | 1,257 | 191
Net Cost | (764) | (924) | 169
Postretirement Benefit Costs [Member] | Foreign [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Service cost | 1 | 2 | 4
Interest cost | 700 | 653 | 764
Plan amendment / curtailment | 0 | 0 | 993
Mark-to-market loss (gain) loss | (47) | (742) | 225
Net Cost | $ 748 | $ 1,397 | $ (450)

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- Definition Amount of cost recognized for passage of time related to defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(2) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=112275985&loc=d3e4179-114921 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 6 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e2709-114920 + Details
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- Definition Amount of cost for actuarial present value of benefits attributed to service rendered by employee for defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=112275985&loc=d3e4179-114921 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 6 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e2709-114920 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 + Details
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