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Income Taxes (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2016	Jun. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Income Taxes [Line Items]
Effective Income Tax Rate Reconciliation Unremitted Earnings From Foreign Operations				(1.10%)	(2.00%)
Effective Income Tax Rate Reconciliation, Other Adjustments, Percent				0.00%	0.10%
Income Tax Expense (Benefit)	$ (2,669)		$ 3,382	$ 1,864	$ 9,064
Goodwill, Impairment Loss	0		44,465	0	44,465
Deferred Tax Benefit Expense Valuation Allowance Adj Capital Loss Carryforwards				$ 100	$ 0
Foreign Earnings Repatriated		$ 10,700
Effective Income Tax Rate Reconciliation, Percent				7.60%	(52.70%)
Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest	9,379		(33,341)	$ 24,602	$ (17,195)
Foreign Income Tax Expense (Benefit), Continuing Operations				$ 5,700
Brazilian [Member]
Income Taxes [Line Items]
Effective income tax rate reconciliation social contribution on income				9.00%
Effective Income Tax Rate Reconciliation Federal Statutory Tax Rate Excluding Social Contribution On Income				25.00%
Effective Income Tax Rate Reconciliation Federal Statutory Tax Rate Including Social Contribution On Income				34.00%
Excess Capital Losses From Investments And Other Related Items [Member]
Income Taxes [Line Items]
Deferred Tax Assets, Valuation Allowance	10,800			$ 10,800
Flexible Packaging Films [Member]
Income Taxes [Line Items]
Foreign Income Tax Expense (Benefit), Continuing Operations				5,700
Flexible Packaging Films [Member] [Domain]
Income Taxes [Line Items]
Goodwill, Impairment Loss	$ 0		$ 44,465	$ 0	$ 44,465
Terphane Ltda [Member]
Income Taxes [Line Items]
BrazilianTaxCreditDeductionPeriod				24 months
Current Effective Tax Rate Including Social Contribution On Income				15.25%
LengthBrazilianTaxIncentive				10 years

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