Income Taxes (Narrative) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	6 Months Ended
Jun. 30, 2013	Jun. 30, 2012
Income Taxes [Line Items]
Effective tax rate for continuing operations	32.60%	31.10%
Benefit from the tax incentives	$ 1.6	$ 1.6
Benefit from the tax incentives, per share	$ 0.05	$ 0.05
Valuation allowance		$ 1.3
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%

Current Effective Tax Rate Excluding Social Contribution On Income

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Current Effective Tax Rate Including Social Contribution On Income

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Current Effective Tax Rate Reconciliation Social Contribution On Income

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Effective Income Tax Rate Reconciliation Federal Statutory Tax Rate Excluding Social Contribution On Income

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Effective Income Tax Rate Reconciliation Federal Statutory Tax Rate Including Social Contribution On Income

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Effective income tax rate reconciliation social contribution on income.

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Recognition of additional valuation allowance.

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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 FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 12

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

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-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

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 08

-Paragraph h

-Subparagraph 2

-Article 4

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-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.

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The amount of income taxes from which a reporting entity is exempt or for which it will receive a reduction in income taxes as a result of the income tax holiday granted by the taxing jurisdiction.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SAB TOPIC 11.C)

-URI http://asc.fasb.org/extlink&oid=6889476&loc=d3e330215-122817

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-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 11

-Section C

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Per share amount effect of the income tax benefit resulting from the income tax holidays granted by taxing jurisdictions.

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