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Income Taxes (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Taxes [Line Items]
Benefit from the tax incentives	$ 2,500,000	$ 4,300,000	$ 700,000
Benefit from the tax incentives, per share	$ 0.08	$ 0.13	$ 0.02
Valuation allowance	20,019,000	18,635,000
Balance of unrecognized state tax positions	1,000,000
State And Foreign Net Operating Loss Carryforwards
Income Taxes [Line Items]
Valuation allowance	1,700,000	1,300,000
Excess Capital Losses From Investments And Other Related Items
Income Taxes [Line Items]
Valuation allowance	15,500,000	16,400,000
Asset Impairments In Foreign Jurisdictions
Income Taxes [Line Items]
Valuation allowance	$ 1,900,000	$ 1,900,000
Terphane Ltda
Income Taxes [Line Items]
Income tax rate	6.25%
Current effective tax rate	15.25%
Percentage of social contribution on income included in current effective tax rate	9.00%
Brazilian
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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Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

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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

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