Pension (Amounts in Accumulated Other Comprehensive Loss to be Recognized During 2018) (Details) - Pension Plan $ in Thousands	Dec. 31, 2017 USD ($)
Defined Benefit Plan Disclosure [Line Items]
Net actuarial loss	$ 7,151
Prior service cost (credit)	(194)
Total cost (credit)	6,957
U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Net actuarial loss	6,546
Prior service cost (credit)	1
Total cost (credit)	6,547
Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Net actuarial loss	605
Prior service cost (credit)	(195)
Total cost (credit)	$ 410

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Amount of cost (credit) included in accumulated other comprehensive (income) loss expected to be recognized in net periodic benefit cost (credit) for fiscal year following most recent annual statement of financial position.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (s)
-URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920

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