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Business Segments (Schedule Of Depreciation And Amortization, Capital Expenditures) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Segment Reporting Information [Line Items]
Depreciation and Amortization	$ 34,982	$ 40,818	$ 44,655
Capital Expenditures	32,831	44,898	79,661
PE Films [Member]
Segment Reporting Information [Line Items]
Depreciation and Amortization	15,480	21,399	25,656
Capital Expenditures	21,218	17,000	15,615
Flexible Packaging Films [Member] [Domain]
Segment Reporting Information [Line Items]
Depreciation and Amortization	9,697	9,331	9,676
Capital Expenditures	3,489	21,806	49,252
Aluminum Extrusions
Segment Reporting Information [Line Items]
Depreciation and Amortization	9,698	9,974	9,202
Capital Expenditures	8,124	6,092	14,742
Subtotal
Segment Reporting Information [Line Items]
Depreciation and Amortization	34,875	40,704	44,534
Capital Expenditures	32,831	44,898	79,609
General Corporate
Segment Reporting Information [Line Items]
Depreciation and Amortization	107	114	121
Capital Expenditures	$ 0	$ 0	$ 52

X

- Definition

The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585

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- Definition

The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Investing Activities
-URI http://asc.fasb.org/extlink&oid=6516133

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3213-108585

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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