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Commitments and Contingencies (Details) - Unfavorable Regulatory Action [Member] | Jun. 30, 2018 USD ($) | Jun. 30, 2018 EUR (€) | Dec. 31, 2000 assessment
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Raw Materials Assessment [Member] |  |  |
Loss Contingencies [Line Items] |  |  |
Number of assessments from the tax authorities regarding ICMS taxes | assessment |  |  | 2
Electricity Assessment [Member] |  |  |
Loss Contingencies [Line Items] |  |  |
Number of assessments from the tax authorities regarding ICMS taxes | assessment |  |  | 3
Maximum [Member] | Raw Materials Assessment 2 [Member] [Member] |  |  |
Loss Contingencies [Line Items] |  |  |
Loss contingency, range of possible loss | $ 11,100,000 |  |
Maximum [Member] | Electricity Assessment One [Member] |  |  |
Loss Contingencies [Line Items] |  |  |
Loss contingency, range of possible loss | 5,200,000 |  |
Maximum [Member] | Second Electricity Assessment [Member] |  |  |
Loss Contingencies [Line Items] |  |  |
Loss contingency, range of possible loss | $ 7,800,000 |  |
Maximum [Member] | Malaucene Co-Employment [Member] |  |  |
Loss Contingencies [Line Items] |  |  |
Loss contingency, range of possible loss | € |  | € 1,300,000.0 |
Loss Contingency, Pending Claims, Number | 18 |  |

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- Definition The number of assessments from the tax authorities of the State of Rio de Janeiro for unpaid Imposto sobre circulacao de Mercadorias e Servicos (or ICMS) taxes, a form of value-added tax in Brazil. + References No definition available. + Details
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- Definition Reflects the estimated amount of loss from the specified contingency as of the balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14435-108349 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 9 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14557-108349 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=115931803&loc=d3e12021-110248 + Details
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