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EMPLOYEE BENEFIT PLANS - Amounts Included in Other Comprehensive Loss That are Expected to be Recognized as Components of Periodic Benefit Costs (FY) (Details) $ in Thousands | Dec. 31, 2017 USD ($)
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United States | Defined Benefit Pension Plans |
Defined Benefit Plan Disclosure [Line Items] |
Prior service cost | $ 3
Net actuarial loss | 970
Total recognized in net periodic benefit cost and other comprehensive (loss) income | 973
United States | Other Postretirement Benefits Plans |
Defined Benefit Plan Disclosure [Line Items] |
Prior service cost | (1,519)
Net actuarial loss | 1,216
Total recognized in net periodic benefit cost and other comprehensive (loss) income | (303)
Foreign Plan | Defined Benefit Pension Plans |
Defined Benefit Plan Disclosure [Line Items] |
Prior service cost | 22
Net actuarial loss | 2,193
Total recognized in net periodic benefit cost and other comprehensive (loss) income | 2,215
Foreign Plan | Other Postretirement Benefits Plans |
Defined Benefit Plan Disclosure [Line Items] |
Prior service cost | (7)
Net actuarial loss | (8)
Total recognized in net periodic benefit cost and other comprehensive (loss) income | $ (15)

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- Definition 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 + Details
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- Definition Amount included in accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan 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 + Details
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- Definition Amount included in accumulated other comprehensive (income) loss for prior service cost (credit) 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 + Details
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