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Income Taxes (Narrative) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified | 3 Months Ended
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Mar. 31, 2013 | Mar. 31, 2012
Income Taxes [Line Items] |  |
Effective tax rate for continuing operations | 28.30% | 34.80%
Benefit from the tax incentives | $ 0.7 | $ 1.0
Benefit from the tax incentives, per share | $ 0.02 | $ 0.03
Valuation allowance |  | $ 0.9
Terphane Ltda [Member] |  |
Income Taxes [Line Items] |  |
Current effective tax rate | 15.25% |
Income tax rate | 6.25% |
Percentage of social contribution on income included in current effective tax rate | 9.00% |
Brazil [Member] |  |
Income Taxes [Line Items] |  |
Federal statutory income tax rate | 34.00% |
Income tax rate | 25.00% |
Percentage of social contribution on income included in federal statutory income tax rate | 9.00% |

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- Definition A ratio calculated by dividing the reported amount of income tax expense attributable to continuing operations for the period by GAAP-basis pretax income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph h -Subparagraph 2 -Article 4 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 47 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32698-109319 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)(2)) -URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690 + Details
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