Tredegar (TG) 10-K 2 Mar 15 2014 FY Annual report Financial data

Document_And_Entity_Informatio

Document And Entity Information (USD $)	12 Months Ended
	Dec. 31, 2014	Jan. 30, 2015	Jun. 30, 2014
Document And Entity Information [Abstract]
Entity Registrant Name	TREDEGAR CORP
Entity Central Index Key	850429
Current Fiscal Year End Date	-19
Entity Filer Category	Large Accelerated Filer
Document Type	10-K
Document Period End Date	31-Dec-14
Document Fiscal Year Focus	2014
Document Fiscal Period Focus (Q1,Q2,Q3,FY)	FY
Amendment Flag	FALSE
Entity Common Stock, Shares Outstanding		32,534,984
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float			$585,612,317

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Dec. 31, 2014		Dec. 31, 2013
In Thousands, unless otherwise specified
Assets
Cash and cash equivalents	$50,056	[1]	$52,617	[1]
Accounts and other receivables, net of allowance for doubtful accounts and sales returns of $2,610 in 2014 and $3,327 in 2013	113,341		99,246
Income taxes recoverable	877		0
Inventories	74,308		70,663
Deferred income taxes	8,877		5,628
Prepaid expenses and other	8,283		6,353
Total current assets	255,742		234,507
Property, plant and equipment, at cost:
Land and land improvements	11,814		12,093
Buildings	135,015		109,125
Machinery and equipment	643,793		677,621
Total property, plant and equipment	790,622		798,839
Less accumulated depreciation	-520,665		-516,279
Net property, plant and equipment	269,957		282,560
Goodwill and other intangibles	215,129		226,300
Other assets and deferred charges	47,798		49,641
Total assets	788,626	[1]	793,008	[1]
Current liabilities:
Accounts payable	94,131		82,795
Accrued expenses	32,049		42,158
Income taxes payable	0		114
Total current liabilities	126,180		125,067
Long-term debt	137,250		139,000
Deferred income taxes	39,255		70,795
Other noncurrent liabilities	113,912		55,482
Total liabilities	416,597		390,344
Commitments and contingencies
Shareholders’ equity:
Issued and outstanding—32,422,082 shares in 2014 and 32,305,145 in 2013 (including restricted stock)	24,364		20,641
Common stock held in trust for savings restoration plan (66,255 shares in 2014 and 65,332 in 2013)	-1,440		-1,418
Accumulated other comprehensive income (loss):
Foreign currency translation adjustment	-47,270		-19,205
Gain (loss) on derivative financial instruments	656		765
Pension and other postretirement benefit adjustments	-103,581		-71,848
Retained earnings	499,300		473,729
Total shareholders’ equity	372,029		402,664
Total liabilities and shareholders’ equity	$788,626		$793,008
[1]	Information on exports and foreign operations are provided on the previous page. Cash and cash equivalents includes funds held in locations outside the U.S. of $40.5 million and $38.6 million at December 31, 2014 and 2013, respectively. Export sales relate almost entirely to Film Products. Operations outside the U.S. in The Netherlands, Hungary, China, Brazil and India also relate to Film Products. Sales from locations in The Netherlands and Hungary are primarily to customers located in Europe. Sales from locations in China (Guangzhou and Shanghai) are primarily to customers located in China, but also include other customers in Asia.

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, except Share data, unless otherwise specified
Statement of Financial Position [Abstract]
Accounts and other receivables, allowance for doubtful accounts and sales returns	$2,610	$3,327
Common stock, no par value (shares)
Common stock, shares authorized (shares)	150,000,000	150,000,000
Common stock, shares, issued (shares)	32,422,082	32,305,145
Common stock, shares, outstanding (shares)	32,422,082	32,305,145
Common stock held in trust for savings restoration plan (shares)	66,255	65,332

Consolidated_Statements_Of_Inc

Consolidated Statements Of Income (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Revenues and other:
Sales	$951,826		$959,346		$882,188
Other income (expense), net	-6,697		1,776		18,119
Total revenues, net of other expenses	945,129		961,122		900,307
Costs and expenses:
Cost of goods sold	778,113		784,675		712,660
Freight	28,793		28,625		24,846
Selling, general and administrative	69,526		71,195		73,717
Research and development	12,147		12,669		13,162
Amortization of intangibles	5,395		6,744		5,806
Interest expense	2,713		2,870		3,590
Asset impairments and costs associated with exit and disposal activities	3,026		1,412		5,022
Total	899,713		908,190		838,803
Income from continuing operations before income taxes	45,416		52,932		61,504
Income taxes	9,387	[1]	16,995	[1]	18,319	[1]
Income from continuing operations	36,029		35,937		43,185
Income (loss) from discontinued operations, net of tax	850	[1]	-13,990	[1]	-14,934	[1]
Net income	$36,879		$21,947		$28,251
Basic:
Continuing operations (in usd per share)	$1.12		$1.12		$1.35
Discontinued operations (in usd per share)	$0.02		($0.44)		($0.47)
Net income (in usd per share)	$1.14		$0.68		$0.88
Diluted:
Continuing operations (in usd per share)	$1.11		$1.10		$1.34
Discontinued operations (in usd per share)	$0.02		($0.43)		($0.46)
Net income (in usd per share)	$1.13		$0.67		$0.88
[1]	See Notes 1, 3, 4 and 18 for more information on losses associated with plant shutdowns, asset impairments and restructurings, unusual items, gains or losses from sale of assets, gains or losses on an investment accounted for under the fair value method and other items.

Consolidated_Statements_Of_Com

Consolidated Statements Of Comprehensive Income (Loss) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Statement of Comprehensive Income [Abstract]
Net income	$36,879	$21,947	$28,251
Foreign currency translation adjustment:
Unrealized foreign currency translation adjustment (net of tax benefit of $2,396 in 2014, tax of $233 in 2013 and tax of $897 in 2012)	-28,065	-19,336	-11,562
Derivative financial instruments adjustment	-109	-228	1,399
Pension & other post-retirement benefit adjustments
Net gains (losses) and prior service costs (net of tax benefit of $22,445 in 2014, tax of $13,231 in 2013 and tax benefit of $11,145 in 2012)	-38,730	22,203	-19,285
Amortization of prior service costs and net gains or losses (net of tax of $3,582 in 2014, tax of $5,398 in 2013 and tax of $3,749 in 2012)	6,997	9,420	6,486
Other comprehensive income (loss)	-59,907	12,059	-22,962
Comprehensive income (loss)	($23,028)	$34,006	$5,289

Consolidated_Statements_Of_Com1

Consolidated Statements Of Comprehensive Income (Loss) (Parenthetical) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Statement of Comprehensive Income [Abstract]
Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax	($2,396)	$233	$897
Derivative financial instruments adjustment, tax (benefit)	-112	-133	818
Net gains or losses and prior service costs, tax (benefit)	-22,445	13,231	-11,145
Amortization of prior service costs and net gains or losses, tax	$3,582	$5,398	$3,749

Consolidated_Statements_Of_Cas

Consolidated Statements Of Cash Flows (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Cash flows from operating activities:
Net income	$36,879		$21,947		$28,251
Adjustments for noncash items:
Depreciation	35,423		37,911		43,463
Amortization of intangibles	5,395		6,744		5,806
Deferred income taxes	-11,489		-5,268		-762
Accrued pension and postretirement benefits	6,974		13,911		8,311
(Gain) loss on an investment accounted for under the fair value method	-2,000		-3,400		-16,100
Loss on asset impairments	993		1,639		2,185
(Gain) loss on sale of assets	-1,031		0		1,219
Changes in assets and liabilities, net of effects of acquisitions and divestitures:
Accounts and notes receivables	-18,696		-1,763		9,454
Inventories	-8,803		1,727		-9,913
Income taxes recoverable/payable	-906		3,063		3,193
Prepaid expenses and other	496		-651		1,883
Accounts payable and accrued expenses	5,554		3,043		9,105
Other, net	2,446		-2,188		-3,509
Net cash provided by operating activities	51,235		76,715		82,586
Cash flows from investing activities:
Capital expenditures	-44,898		-79,661		-33,252
Acquisitions, net of cash acquired	0		561		-57,936
Net proceeds from the sale of investment property (2014) and Fallings Springs, LLC (2013 & 2012)	4,500		306		12,071
Proceeds from the sale of assets and other	2,125		1,190		3,557
Net cash used in investing activities	-38,273		-77,604		-75,560
Cash flows from financing activities:
Borrowings	116,000		87,000		93,250
Debt principal payments and financing costs	-117,779		-76,000		-91,604
Dividends paid	-11,007		-9,040		-30,782
Proceeds from exercise of stock options and other	410		3,317		2,400
Net cash provided by (used in) financing activities	-12,376		5,277		-26,736
Effect of exchange rate changes on cash	-3,147		-593		-407
Increase (decrease) in cash and cash equivalents	-2,561		3,795		-20,117
Cash and cash equivalents at beginning of period	52,617	[1]	48,822		68,939
Cash and cash equivalents at end of period	50,056	[1]	52,617	[1]	48,822
Supplemental cash flow information:
Interest payments	3,320		2,583		2,992
Income tax payments (refunds), net	$20,890		$19,480		$14,721
[1]	Information on exports and foreign operations are provided on the previous page. Cash and cash equivalents includes funds held in locations outside the U.S. of $40.5 million and $38.6 million at December 31, 2014 and 2013, respectively. Export sales relate almost entirely to Film Products. Operations outside the U.S. in The Netherlands, Hungary, China, Brazil and India also relate to Film Products. Sales from locations in The Netherlands and Hungary are primarily to customers located in Europe. Sales from locations in China (Guangzhou and Shanghai) are primarily to customers located in China, but also include other customers in Asia.

Consolidated_Statements_Of_Sha

Consolidated Statements Of Shareholders' Equity (USD $)	Total	Common Stock	Retained Earnings	Trust For Savings Restoration Plan	Foreign Currency Translation	Gain (Loss) On Derivative Financial Instruments	Pension and other post-retirement benefit adjustments
In Thousands, except Share data, unless otherwise specified
Balance at Dec. 31, 2011	$396,907	$14,357	$463,278	($1,343)	$11,693	($406)	($90,672)
Balance, shares at Dec. 31, 2011		32,057,281
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	28,251		28,251
Foreign currency translation adjustment	-11,562				-11,562
Derivative financial instruments adjustment	1,399					1,399
Net gains (losses) and prior service costs	-19,285						-19,285
Amortization of prior service costs and net gains or losses	6,486						6,486
Cash dividends declared	-30,782		-30,782
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures		78,299
Share Based Compensation Expense, Value	2,516	2,516
Issued upon exercise of stock options & other	2,031	2,031
Issued upon exercise of stock options (including related income tax benefits) & other, shares		143,366
Shares received from the sale of Falling Springs, LLC	3,709	3,709
Shares received from the sale of Falling Springs, LLC, shares		209,576
Tredegar common stock purchased by trust for savings restoration plan	0		58	-58
Balance at Dec. 31, 2012	372,252	15,195	460,805	-1,401	131	993	-103,471
Balance, shares at Dec. 31, 2012		32,069,370
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	21,947		21,947
Foreign currency translation adjustment	-19,336				-19,336
Derivative financial instruments adjustment	-228					-228
Net gains (losses) and prior service costs	22,203						22,203
Amortization of prior service costs and net gains or losses	9,420						9,420
Cash dividends declared	-9,040		-9,040
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures		72,125
Share Based Compensation Expense, Value	2,572	2,572
Issued upon exercise of stock options & other	2,874	2,874
Issued upon exercise of stock options (including related income tax benefits) & other, shares		163,650
Tredegar common stock purchased by trust for savings restoration plan	0		17	-17
Balance at Dec. 31, 2013	402,664	20,641	473,729	-1,418	-19,205	765	-71,848
Balance, shares at Dec. 31, 2013		32,305,145
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	36,879		36,879
Foreign currency translation adjustment	-28,065				-28,065
Derivative financial instruments adjustment	-109					-109
Net gains (losses) and prior service costs	-38,730						-38,730
Amortization of prior service costs and net gains or losses	6,997						6,997
Cash dividends declared	-11,007		-11,007
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures		85,129
Share Based Compensation Expense, Value	3,224	3,224
Shareholder Rights Agreement Redemption	-323		-323
Issued upon exercise of stock options & other	499	499
Issued upon exercise of stock options (including related income tax benefits) & other, shares		31,808
Tredegar common stock purchased by trust for savings restoration plan	0		22	-22
Balance at Dec. 31, 2014	$372,029	$24,364	$499,300	($1,440)	($47,270)	$656	($103,581)
Balance, shares at Dec. 31, 2014		32,422,082

Consolidated_Statements_Of_Sha1

Consolidated Statements Of Shareholders' Equity (Parenthetical) (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Statement of Stockholders' Equity [Abstract]
Foreign currency translation adjustment, tax (benefit)	($2,396)	$233	$897
Derivative financial instruments adjustment, tax (benefit)	-112	-133	818
Net gains or losses and prior service costs, tax (benefit)	-22,445	13,231	-11,145
Amortization of prior service costs and net gains or losses, tax	3,582	5,398	3,749
Cash dividends declared (in usd per share)	$0.34	$0.28	$0.96
Issued upon exercise of stock options, income tax (benefit)	$3	$188	$144

Summary_Of_Significant_Account

Summary Of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2014
Accounting Policies [Abstract]
Summary Of Significant Accounting Policies	SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
	Organization and Nature of Operations. Tredegar Corporation and subsidiaries (collectively “Tredegar,” “the Company,” “we,” “us” or “our”) are primarily engaged in the manufacture of plastic films and aluminum extrusions. See Notes 10 and 18 regarding restructurings and Note 3 regarding discontinued operations.
	Basis of Presentation. The consolidated financial statements include the accounts and operations of Tredegar and all of its majority-owned subsidiaries. Intercompany accounts and transactions have been eliminated in consolidation. On February 12, 2008, Tredegar sold its aluminum extrusions business in Canada, and on November 20, 2012, the Company sold its mitigation banking business, Falling Springs, LLC (“Falling Springs”). All historical results for these businesses have been reflected as discontinued operations in these financial statements; however, cash flows for discontinued operations have not been separately disclosed in the consolidated statements of cash flows. See Note 3 regarding discontinued operations.
	The preparation of financial statements in conformity with United States (“U.S.”) generally accepted accounting principles (“U.S. GAAP”) requires Tredegar to make estimates and assumptions that affect the reported amounts of revenues, expenses, assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements. Actual results could differ from those estimates.
	Certain amounts for the prior years have been reclassified to conform to current year presentation.
	Foreign Currency Translation. The financial statements of subsidiaries located outside the U.S., where the local currency is the functional currency, are translated into U.S. Dollars using exchange rates in effect at the period end for assets and liabilities and average exchange rates during each reporting period for results of operations. Adjustments resulting from the translation of these financial statements are reflected as a separate component of shareholders’ equity. There are no operating subsidiaries located outside the U.S. where the U.S. Dollar is the functional currency.
	Transaction and remeasurement gains or losses included in income were a loss of $1.5 million in 2014, a loss of $0.4 million in 2013 and a gain of $16,000 in 2012. These amounts do not include the effects between reporting periods that exchange rate changes have on income of the locations outside the U.S. that result from translation into U.S. Dollars.
	Cash and Cash Equivalents. Cash and cash equivalents consist of cash on hand in excess of daily operating requirements and highly liquid investments with original maturities of three months or less. At December 31, 2014 and 2013, Tredegar had cash and cash equivalents of $50.1 million and $52.6 million, respectively, including funds held in locations outside the U.S. of $40.5 million and $38.6 million, respectively.
	The Company’s policy permits investment of excess cash in marketable securities that have the highest credit ratings and maturities of less than one year. The primary objectives of the policy are safety of principal and liquidity.
	Accounts and Other Receivables. Accounts receivable are stated at the amount invoiced to customers less allowances for doubtful accounts and sales returns. Accounts receivable are non-interest bearing and arise from the sale of product to customers under typical industry trade terms. Notes receivable are not significant. Past due amounts are determined based on established terms and charged-off when deemed uncollectible. The allowance for doubtful accounts is determined based on an assessment of probable losses taking into account past due amounts, customer credit profile, historical experience and current economic conditions. Other receivables include value-added taxes related to certain foreign subsidiaries and other miscellaneous receivables due within one year.
	Inventories. Inventories are stated at the lower of cost or market, with cost determined on the last-in, first-out (“LIFO”) basis, the weighted average cost or the first-in, first-out basis. Cost elements included in work-in-process and finished goods inventories are raw materials, direct labor and manufacturing overhead.
	Property, Plant and Equipment. Accounts include costs of assets constructed or purchased, related delivery and installation costs and interest incurred on significant capital projects during their construction periods. Expenditures for renewals and betterments also are capitalized, but expenditures for repairs and maintenance are expensed as incurred. The cost and accumulated depreciation applicable to assets retired or sold are removed from the respective accounts, and gains or losses thereon are included in income.
	Capital expenditures for property, plant and equipment include capitalized interest. Capitalized interest included in capital expenditures for property, plant and equipment was $1.1 million, $0.9 million and $0.2 million in 2014, 2013 and 2012, respectively.
	Depreciation is computed primarily by the straight-line method based on the estimated useful lives of the assets that, except for isolated exceptions, range from 5 to 40 years for buildings and land improvements and 2 to 20 years for machinery and equipment.
	Investments in Private Entities with Less Than or Equal to 50% Voting Ownership Interest. The Company accounts for its investments in private entities where its voting ownership is less than or equal to 50% based on the facts and circumstances surrounding the investment. Investments are required to be accounted for under the consolidation method in situations where Tredegar is the primary beneficiary of a variable interest entity. The primary beneficiary is the party that has a controlling financial interest in a variable interest entity. The Company is deemed to have a controlling financial interest if it has (i) the power to direct activities of the variable interest entity that most significantly impact its economic performance and (ii) the obligation to absorb losses or the right to receive benefits from the variable interest entity that could potentially be significant to its operations.
	If the Company is not deemed to be the primary beneficiary in an investment in a variable interest entity then it selects either: (i) the fair value method or (ii) either (a) the cost method if it does not have significant influence over operating and financial policies of the investee or (b) the equity method if it does have significant influence.
	For those investments measured at fair value, U.S. GAAP requires disclosure of the level within the fair value hierarchy in which fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets or liabilities (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3).
	Goodwill and Other Intangibles. The excess of the purchase price over the fair value of identifiable net assets of acquired companies is allocated to goodwill. The Company assesses goodwill for impairment when events or circumstances indicate that the carrying value may not be recoverable, or, at a minimum, on an annual basis (December 1st of each year). The Company’s significant reporting units in Film Products include Polyethylene Films and PET Films. There are two reporting units in Aluminum Extrusions, Bonnell Aluminum and AACOA. Each of these reporting units has separately identifiable operating net assets (operating assets including goodwill and intangible assets net of operating liabilities).
	All goodwill in Aluminum Extrusions is associated with the AACOA reporting unit. A goodwill impairment charge of $30.6 million ($30.6 million after taxes), which represented the entire goodwill balance in the Bonnell Aluminum reporting unit, was recognized in 2009.
	The Company estimates the fair value of its reporting units using discounted cash flow analysis and comparative enterprise value-to-EBITDA (earnings before interest, taxes, depreciation and amortization) multiples. The goodwill of Polyethylene Films reporting unit was tested for impairment at the annual testing date, with the estimated fair value of this reporting unit substantially exceeding the carrying value of its net assets. The goodwill of PET Films reporting unit was also tested for impairment at December 1, 2014, with the estimated fair value of this reporting unit exceeding the carrying value of its net assets by approximately 31%. The goodwill of AACOA is associated with the October 2012 acquisition of AACOA, Inc. (“AACOA”), and estimated fair value of this reporting unit exceeded the carrying value of its net assets by approximately 63% at December 1, 2014.
	Indefinite-lived intangible assets are assessed for impairment when events or circumstances indicate that the carrying value may not be recoverable, or, at a minimum, on an annual basis (December 1st of each year). The Company estimates the fair value of its trade names using a relief-from-royalty method that relies upon a corresponding discounted cash flow analysis.
	Impairment of Long-Lived Assets. The Company reviews long-lived assets for possible impairment when events indicate that an impairment may exist. For assets that are held and used in operations, if events indicate that an asset may be impaired, the Company estimates the future unlevered pre-tax cash flows expected to result from the use of the asset and its eventual disposition. Assets are grouped for this purpose at the lowest level for which there are identifiable and independent cash flows. If the sum of these undiscounted pre-tax cash flows is less than the carrying amount of the asset, an impairment loss is calculated. Measurement of the impairment loss is the amount by which the carrying amount exceeds the estimated fair value of the asset group.
	Assets that are held for sale are reported at the lower of their carrying amount or estimated fair value less cost to sell, with an impairment loss recognized for any write-down required.
	Pension Costs and Postretirement Benefit Costs Other than Pensions. Pension costs and postretirement benefit costs other than pensions are accrued over the period employees provide service to Tredegar. Liabilities and expenses for pension plans and other postretirement benefits are determined using actuarial methodologies and incorporate significant assumptions, including the rate used to discount the future estimated liability, the long-term rate of return on plan assets, and several assumptions relating to the employee workforce. The Company recognizes the funded status of its pension and other postretirement plans in the accompanying consolidated balance sheets. Tredegar’s policy is to fund its pension plans at amounts not less than the minimum requirements of the Employee Retirement Income Security Act (“ERISA”) of 1974 and to fund postretirement benefits other than pensions when claims are incurred.
	Revenue Recognition. Revenue from the sale of products, which is shown net of estimated sales returns and allowances, is recognized when title has passed to the customer, the price of the product is fixed and determinable, and collectability is reasonably assured. Amounts billed to customers related to freight have been classified as sales in the accompanying consolidated statements of income. The cost of freight has been classified as a separate line in the accompanying consolidated statements of income. Taxes assessed by a governmental authority that are both imposed on and concurrent with a specific revenue-producing transaction between Tredegar and its customers (such as value-added taxes) are accounted for on a net basis and therefore excluded from revenues.
	Research & Development (“R&D”) Costs. R&D costs are expensed as incurred and include primarily salaries, wages, employee benefits, equipment depreciation, facility costs and the cost of materials consumed relating to R&D efforts. R&D costs include a reasonable allocation of indirect costs.
	Income Taxes. Income taxes are recognized during the period in which transactions enter into the determination of income for financial reporting purposes, with deferred income taxes being provided at enacted statutory tax rates on the differences between the financial reporting and tax bases of assets and liabilities (see Note 17). Deferred U.S. federal income taxes have not been recorded for the undistributed earnings for Terphane Ltda. (a subsidiary of Film Products) because of the Company’s intent to permanently reinvest these earnings. Because of the accumulation of significant losses related to foreign currency translations at Terphane Ltda. as of December 31, 2014, there were no unrecorded deferred tax liabilities associated with the U.S. federal income taxes and foreign withholding taxes on undistributed earnings indefinitely invested outside the U.S. The Company accrues U.S. federal income taxes to the extent permitted under U.S. GAAP on unremitted earnings of all other foreign subsidiaries.
	A valuation allowance is recorded in the period when the Company determines that it is more likely than not that all or a portion of deferred tax assets may not be realized. The establishment and removal of a valuation allowance requires the Company to consider all positive and negative evidence and make a judgmental decision regarding the amount of valuation allowance required as of a reporting date. The benefit of an uncertain tax position is included in the accompanying financial statements when the Company determines that it is more likely than not that the position will be sustained, based on the technical merits of the position, if the taxing authority examines the position and the dispute is litigated. This determination is made on the basis of all the facts, circumstances and information available as of the reporting date.
	Earnings Per Share. Basic earnings per share is computed using the weighted average number of shares of common stock outstanding. Diluted earnings per share is computed using the weighted average common and potentially dilutive common equivalent shares outstanding, determined as follows:
		2014			2013			2012
	Weighted average shares outstanding used to compute basic earnings per share	32,302,108			32,171,751			32,032,343
	Incremental shares attributable to stock options and restricted stock	251,746			427,528			160,233
	Shares used to compute diluted earnings per share	32,553,854			32,599,279			32,192,576
	Incremental shares attributable to stock options and restricted stock are computed using the average market price during the related period. The average out-of-the-money options to purchase shares that were excluded from the calculation of incremental shares attributable to stock options and restricted stock were 320,849 in 2014, 31,167 in 2013 and 632,050 in 2012.
	Stock-Based Employee Compensation Plans. Compensation expense is recorded on all share-based awards based upon its calculated fair value over the requisite service period using the graded-vesting method. The fair value of stock option awards was estimated as of the grant date using the Black-Scholes options-pricing model. The fair value of restricted stock awards was estimated as of the grant date using the closing stock price on that date.
	The assumptions used in this model for valuing Tredegar stock options granted in 2014, 2013 and 2012 are as follows:
		2014				2013			2012
	Dividend yield	1.3		%		1.1		%	0.9		%
	Weighted average volatility percentage	43.5		%		48.3		%	48.7		%
	Weighted average risk-free interest rate	2		%		1.1		%	1		%
	Holding period (years):
	Officers	6				6			6
	Management	5				5			5
	Weighted average exercise price at date of grant (also weighted average market price at date of grant):
	Officers	$	22.49			$	24.84		$	19.3
	Management	22.33				25.1			19.4
	The dividend yield is the dividend yield on common stock at the date of grant, which the Company believes is a reasonable estimate of the expected yield during the holding period. The expected volatility is based on the historical volatility of Tredegar’s common stock using a sequential period of historical data equal to the expected holding period of the option. The Company has no reason to believe that future volatility for this period is likely to differ from the past. The assumed risk-free interest rate is based on observed interest rates (zero coupon U.S. Treasury debt securities) appropriate for the expected holding period. The expected holding period and forfeiture assumptions are based on historical experience. Estimated forfeiture assumptions are reviewed through the vesting period. Adjustments are made if actual forfeitures differ from previous estimates. The cumulative effect of a change in estimated forfeitures is recognized in the period of the change.
	Tredegar stock options granted during 2014, 2013 and 2012, and related estimated fair value at the date of grant, are as follows:
		2014				2013			2012
	Stock options granted (number of shares):
	Officers	87,820				94,400			99,600
	Management	93,656				90,300			82,500
	Total	181,476				184,700			182,100
	Estimated weighted average fair value of options per share at date of grant:
	Officers	$	9.21			$	10.37		$	8.07
	Management	7.6				9.65			7.31
	Total estimated fair value of stock options granted (in thousands)	$	1,521			$	1,850		$	1,449
	Additional disclosure of Tredegar stock options is included in Note 13.
	Financial Instruments. Tredegar uses derivative financial instruments for the purpose of hedging aluminum price volatility and currency exchange rate exposures that exist as part of transactions associated with ongoing business operations. The Company’s derivative financial instruments are designated as and qualify as cash flow hedges and are recognized in the accompanying balance sheet at fair value. A change in the fair value of the derivative that is highly effective as and that is designated and qualifies as a cash flow hedge is recorded in other comprehensive income. Gains and losses reported in other comprehensive income (loss) are reclassified to earnings in the periods in which earnings are affected by the variability of cash flows of the hedged transaction. Such gains and losses are reported on the same line as the underlying hedged item, and the cash flows related to financial instruments are classified in the consolidated statements of cash flows in a manner consistent with those of the transactions being hedged. Any hedge ineffectiveness (which represents the amount by which the changes in the fair value of the derivative exceed the variability in the cash flows of the forecasted transaction) is recorded in current period earnings. The amount of gains and losses recognized for hedge ineffectiveness were not material in 2014, 2013 and 2012.
	The Company’s policy requires that it formally document all relationships between hedging instruments and hedged items, as well as its risk management objective and strategy for undertaking various hedge transactions. The Company also formally assesses (both at the hedge’s inception and on an ongoing basis) whether the derivatives that are used in hedging transactions have been highly effective in offsetting changes in the fair value or cash flows of hedged items and whether those derivatives may be expected to remain highly effective in future periods. When it is determined that a derivative is not (or has ceased to be) highly effective as a hedge, the Company discontinues hedge accounting prospectively.
	As a policy, Tredegar does not engage in speculative or leveraged transactions, nor does it hold or issue financial instruments for trading purposes. Additional disclosure of the utilization of derivative hedging instruments is included in Note 9.
	Comprehensive Income (Loss). Comprehensive income (loss) is defined as net income or loss and other comprehensive income or loss. Other comprehensive income (loss) includes changes in foreign currency translation adjustments, unrealized gains and losses on derivative financial instruments, prior service costs and net gains or losses from pension and other postretirement benefit plans arising during the period and amortization of these prior service costs and net gains or losses adjustments, all recorded net of deferred income taxes.
	The following table summarizes the after-tax changes in accumulated other comprehensive income (loss) for the year ended December 31, 2014:
	(In Thousands)	Foreign currency translation adjustment				Gain (loss) on derivative financial instruments			Pension and other post-retirement benefit adjustments			Total
Beginning balance, January 1, 2014	$	(19,205	)		$	765		$	(71,848	)	$	(90,288	)
Other comprehensive income (loss) before reclassifications	(28,065		)		294			(38,730		)	(66,501		)
Amounts reclassified from accumulated other comprehensive income (loss)	—				(403		)	6,997			6,594
Net other comprehensive income (loss) - current period	(28,065		)		(109		)	(31,733		)	(59,907		)
Ending balance, December 31, 2014	$	(47,270	)		$	656		$	(103,581	)	$	(150,195	)
The following table summarizes the after-tax changes in accumulated other comprehensive income (loss) for the year ended December 31, 2013:
(In Thousands)	Foreign currency translation adjustment				Gain (loss) on derivative financial instruments			Pension and other post-retirement benefit adjustments			Total
Beginning balance, January 1, 2013	$	131			$	993		$	(103,471	)	$	(102,347	)
Other comprehensive income (loss) before reclassifications	(19,336		)		(590		)	22,203			2,277
Amounts reclassified from accumulated other comprehensive income (loss)	—				362			9,420			9,782
Net other comprehensive income (loss) - current period	(19,336		)		(228		)	31,623			12,059
Ending balance, December 31, 2013	$	(19,205	)		$	765		$	(71,848	)	$	(90,288	)
Reclassifications of balances out of accumulated other comprehensive income (loss) into net income during 2014 are summarized as follows:
(In Thousands)	Amount reclassified from other comprehensive income				Location of gain (loss) reclassified from accumulated other comprehensive income to net income
Gain (loss) on derivative financial instruments:
Aluminum future contracts, before taxes	$	631			Cost of sales
Foreign currency forward contracts, before taxes	16				Cost of sales
Total, before taxes	647
Income tax expense (benefit)	244				Income taxes
Total, net of tax	$	403
Amortization of pension and other post-retirement benefits:
Actuarial gain (loss) and prior service costs, before taxes	$	(10,579	)		(a)
Income tax expense (benefit)	(3,582		)		Income taxes
Total, net of tax	$	(6,997	)
(a) This component of accumulated other comprehensive income is included in the computation of net periodic pension cost (see Note 14 for additional detail).
Reclassifications of balances out of accumulated other comprehensive income (loss) into net income during 2013 are summarized as follows:
(In Thousands)	Amount reclassified from other comprehensive income				Location of gain (loss) reclassified from accumulated other comprehensive income to net income
Gain (loss) on derivative financial instruments:
Aluminum future contracts, before taxes	$	(583	)		Cost of sales
Foreign currency forward contracts, before taxes	—
Total, before taxes	(583		)
Income tax expense (benefit)	(221		)		Income taxes
Total, net of tax	$	(362	)
Amortization of pension and other post-retirement benefits:
Actuarial gain (loss) and prior service costs, before taxes	$	(14,818	)		(a)
Income tax expense (benefit)	(5,398		)		Income taxes
Total, net of tax	$	(9,420	)
(a) This component of accumulated other comprehensive income is included in the computation of net periodic pension cost (see Note 14 for additional detail).
Recently Issued Accounting Standards. In April 2014, the Financial Accounting Standards Board (“FASB”) issued a revised standard that changes current guidance for discontinued operations. Under the revised standard, to be a discontinued operation, a component or group of components must represent a strategic shift that has (or will have) a major effect on an entity’s operations and financial results. Failure to eliminate significant continuing cash flows of or involvement with a disposed component from an entity’s ongoing operations after a disposal no longer precludes presentation as a discontinued operation. Expanded disclosures for discontinued operations under the revised standard will also include more details about earnings and balance sheet accounts, total operating and investing cash flows and cash flows resulting from continuing involvement. New disclosures are also required for disposals of individually significant components that do not qualify as discontinued operations. The new guidance is to be applied prospectively to all new disposals of components and new classifications as held for sale for annual reporting periods beginning after December 15, 2014, with early adoption permitted. The Company will implement this revised standard as transactions and events warrant.
In May 2014, the FASB and International Accounting Standards Board (“IASB”) issued their converged standard on revenue recognition. The revised revenue standard contains principles that an entity will apply to direct the measurement of revenue and timing of when it is recognized. The core principle of the guidance is that the recognition of revenue should depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which an entity expects to be entitled in exchange for those goods and services. To achieve that core principle, an entity will utilize a principle-based five-step approach model. The converged standard also includes more robust disclosure requirements which will require entities to provide sufficient information to enable users of financial statements to understand the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers. The amendments in this revised standard are effective for annual reporting periods beginning after December 15, 2016, including interim periods within that reporting period. Early adoption is not permitted. The converged standard can be adopted either retrospectively or through the use of a practical expedient. The Company is still assessing the impact of this new guidance.
In June 2014, the FASB issued a new standard to eliminate the concept of development stage entities and all related specified presentation and reporting requirements under U.S. GAAP. In addition, the amended standard eliminated the scope exception for development stage entities when evaluating the sufficiency of equity at risk for a variable interest entity (“VIE”), thereby changing consolidation conclusions in some situations. Except for the elimination of the scope exception for development stage entities when evaluating the sufficiency of equity at risk for a VIE, the revised guidance is effective for annual reporting periods beginning after December 15, 2014, including interim periods within that reporting period. The amendments to the consolidation guidance are effective for annual reporting periods beginning after December 15, 2015, including interim periods within that reporting period. The new standard is not expected to impact the Company.
In June 2014, the FASB amended the accounting for share-based payments when the terms of an award provide that a performance target could be achieved after the requisite service period. The amendments require that a performance target that affects vesting and that could be achieved after the requisite service period be treated as a performance condition. As such, the performance target should not be reflected in estimating grant-date value of the award, and compensation expense should be recognized in the period in which it becomes probable that the performance target will be achieved and should represent the compensation cost attributable to the period(s) for which the requisite service has already been rendered. The amended standard is effective for annual reporting periods beginning after December 15, 2015, including interim periods within that reporting period. Early adoption is permitted. The new standard is not expected to impact the Company.
In January 2015, the FASB simplified income statement classification by removing the concept of extraordinary items. Items that are both unusual and infrequent in nature will no longer be separately reported net of tax after continuing operations. The existing requirement to separately present items that are of an unusual nature or occur infrequently on a pre-tax basis within income from continuing operations has been retained and expanded to include items that are both unusual and infrequent. The standard is effective for periods beginning after December 15, 2015. Early adoption is permitted, but only as of the beginning of the fiscal year of adoption. The new standard is not expected to impact the Company.

Acquisitions

Acquisitions	12 Months Ended
	Dec. 31, 2014
Business Combinations [Abstract]
Acquisitions	ACQUISITIONS
	On October 1, 2012, The William L. Bonnell Company, Inc. acquired 100% ownership of AACOA. AACOA operates production facilities in Elkhart, Indiana and Niles, Michigan. Its primary markets include consumer durables, machinery and equipment and transportation. The acquisition added fabrication capabilities to Aluminum Extrusions’ array of products and services while providing AACOA with large press capabilities and enhanced geographic sales coverage in a variety of end-use markets.
	All post-closing adjustments related to the purchase price for AACOA were resolved in 2013. Adjustments to the purchase price were made retrospectively as if the accounting had been completed on the acquisition date. After certain post-closing adjustments (primarily related to working capital transferred), the purchase price, net of cash acquired, was $54.1 million, which includes $0.6 million that was received from the seller in 2013. The purchase price was funded using financing secured from the Company’s existing $350 million revolving credit facility.
	Based upon management’s valuation of the fair value of tangible and intangible assets acquired (net of cash acquired) and liabilities assumed, the purchase price allocation was as follows:
	(In Thousands)
	Accounts receivable	$	12,477
	Inventories	4,708
	Property, plant & equipment	15,116
	Identifiable intangible assets:
	Customer relationships	4,800
	Trade names	4,800
	Proprietary technology	3,400
	Noncompete agreements	1,600
	Other assets (current & noncurrent)	42
	Trade payables & accrued expenses	(6,574		)
	Total identifiable net assets	40,369
	Purchase price, net of cash received	54,065
	Goodwill	$	13,696
	The goodwill and other intangible asset balances associated with this acquisition will be deductible for tax purposes. Intangible assets acquired in the purchase of AACOA are being amortized over the following periods:
	Identifiable Intangible Asset	Useful Life (Yrs)
	Customer relationships	10
	Proprietary technology	10-Jun
	Trade names	Indefinite
	Noncompete agreements	2
	On October 14, 2011, TAC Holdings, LLC (the “Buyer”) and Tredegar Film Products Corporation, which are indirect and direct, respectively, wholly-owned subsidiaries of Tredegar, entered into a Membership Interest Purchase Agreement (the “Purchase Agreement”) with Gaucho Holdings, B.V. (the “Seller”), an indirect, wholly-owned subsidiary of Vision Capital Partners VII LP (“Vision Capital”). On October 24, under the terms of the Purchase Agreement, the Buyer acquired from the Seller 100% of the outstanding equity interests of Terphane Holdings, LLC (“Terphane”). Terphane operates manufacturing facilities in Cabo de Santo Agostinho, Brazil and Bloomfield, New York. It is a producer of thin polyester films in Latin America with a growing presence in strategic niches in the U.S.
	All post-closing adjustments related to the purchase price for Terphane were resolved in 2012, which resulted in a payment to the seller of $3.3 million. Adjustments to the purchase price were made retrospectively as if the accounting had been completed on the acquisition date. Upon completing these post-closing adjustments, which were primarily related to working capital transferred, the total purchase price (net of cash acquired) was $182.7 million. The purchase price was funded using available cash (net of cash received) of approximately $57.7 million and financing of $125 million secured from Tredegar’s former revolving credit facility.
	The financial position and results of operations for AACOA have been consolidated with Tredegar subsequent to October 1, 2012. For the year ended December 31, 2012, the consolidated results of operations included sales of $19.9 million and net income from continuing operations of $1.0 million related to AACOA. The financial position and results of operations for Terphane have been consolidated with Tredegar subsequent to October 24, 2011.
	The following unaudited supplemental pro forma data presents its consolidated revenues and earnings as if the acquisition of AACOA had been consummated on January 1, 2012. The pro forma results are not necessarily indicative of the Company’s consolidated revenues and earnings if the acquisition and related borrowing had been consummated on January 1, 2012. Supplemental unaudited pro forma results for the year ended December 31, 2012 are as follows:
	(In Thousands, Except Per Share Data)		2012
	Sales		$	946,594
	Income from continuing operations		44,816
	Earnings per share from continuing operations:
	Basic		$	1.4
	Diluted		1.39
	The above supplemental unaudited pro forma amounts reflect the application of the following adjustments in order to present the consolidated results as if the acquisitions and related borrowings had occurred on January 1, 2012:
	•	Adjustment for additional depreciation and amortization expense associated with the adjustments to property, plant and equipment, and intangible assets associated with purchase accounting;
	•	Additional interest expense and financing fees associated with borrowing arrangements used to fund the acquisition of AACOA and the elimination of historical interest expense associated with historical borrowings of AACOA that were not assumed by Tredegar;
	•	Adjustments to eliminate transactions-related expenses associated with the October 2012 acquisition of AACOA;
	•	Adjustments for the estimated net income tax benefit associated with the previously described adjustments; and
	•	Adjustments to income tax expense for AACOA as it had previously elected to be treated as an S-Corp for federal income tax purposes.

Discontinued_Operations

Discontinued Operations	12 Months Ended
	Dec. 31, 2014
Discontinued Operations and Disposal Groups [Abstract]
Discontinued Operations	DISCONTINUED OPERATIONS
	On November 20, 2012, Tredegar Real Estate Holdings, Inc., a wholly-owned subsidiary, sold its membership interests in Falling Springs to Arc Ventures, LC for $16.6 million. Arc Ventures, LC is a Virginia limited liability company affiliated with John D. Gottwald, a member of Tredegar’s Board of Directors. The purchase price was comprised of $12.8 million of cash and 209,576 shares of common stock of Tredegar owned by Arc Ventures, LC. The corresponding loss on sale of $3.1 million, which includes transaction-related expenses of $0.5 million, and the results of operations related to Falling Springs have been classified as discontinued operations for all periods presented. For the year ended December 31, 2012, sales of $3.2 million have been reclassified to discontinued operations, and net income of $0.5 million has been reclassified to discontinued operations in 2012. Falling Springs was formerly a component of the Other segment.
	On February 12, 2008, the Company sold its aluminum extrusions business in Canada for approximately $25.0 million to an affiliate of H.I.G. Capital. In 2014, accruals for indemnifications under the purchase agreement related to environmental matters were adjusted, resulting in income from discontinued operations of $0.9 million ($0.9 million net of tax). In 2013 and 2012, accruals of $14.0 million ($14.0 million net of tax) and $13.4 million ($13.4 million net of tax), respectively, were made for indemnifications under the purchase agreement related to environmental matters.
	The historical results for these businesses, including any subsequent adjustments for contractual indemnifications, have been reflected as discontinued operations; however, cash flows for discontinued operations have not been separately disclosed in the consolidated statements of cash flows.

Investments

Investments	12 Months Ended
	Dec. 31, 2014
Equity Method Investments and Joint Ventures [Abstract]
Investments	INVESTMENTS
	In August 2007 and December 2008, Tredegar made an aggregate investment of $7.5 million in kaleo, Inc. (“kaléo”), a privately held specialty pharmaceutical company formerly known as Intelliject, Inc. The mission of kaléo is to set a new standard in life-saving personal medical products designed to enable superior treatment outcomes, improved cost effectiveness and intuitive patient administration. The Company’s ownership interest on a fully diluted basis is approximately 20%, and the investment is accounted for under the fair value method. At the time of the initial investment, the Company elected the fair value option over the equity method of accounting since its investment objectives were similar to those of venture capitalists, which typically do not have controlling financial interests. The Company recognized a net unrealized gain of $2.0 million ($1.0 million after taxes) in 2014 that primarily related to favorable adjustments in the fair value for the passage of time as anticipated cash flows associated with achieving product development and commercialization milestones were discounted at 45% for their high degree of risk and the impact of reducing the weighted average cost of capital used to discount cash flow projections after kaléo commercialized a second product, partially offset by unfavorable adjustments in the fair value due to a reassessment of the amount and timing of estimated cash flows associated with kaléo’s commercialized products.
	The Company recognized an unrealized gain of $3.4 million ($2.2 million after taxes) in 2013 related to favorable adjustments in the fair value for the passage of time as anticipated cash flows associated with achieving product development and commercialization milestones were discounted at 55% for their high degree of risk, partially offset by unfavorable adjustments in the fair value due to a reassessment of the amount and timing of projected receipt of royalty and milestone payments from commercial sales of kaléo’s licensed product, which launched in early 2013, and unfavorable adjustments for higher development and commercialization expenses related to its product pipeline.
	In 2012, the Company recognized an unrealized gain of $16.1 million ($10.2 million after taxes) attributed to various factors, most notably a favorable adjustment to the timing and amount of anticipated cash flows derived from updated marketing research; the passage of time as anticipated cash flows associated with achieving product development commercialization milestones are discounted at 55% for their high degree of risk; and a reduction in the weighted average cost of capital used to discount cash flows in the first-quarter valuation to reflect the completion of certain process testing and a reassessment of the risk associated with the timing for obtaining final marketing approval from the U.S. Food and Drug Administration (“FDA”) for the company’s first product. Unrealized gains (losses) associated with this investment are included in “Other income (expense), net” in the consolidated statements of income and separately stated in the segment operating profit table in Note 5.
	At December 31, 2014 and 2013, the estimated fair value of the Company’s investment (included in “Other assets and deferred charges” in the consolidated balance sheets) was $39.1 million and $37.1 million, respectively. Subsequent to its most recent investment (December 15, 2008), and until the next round of financing, the Company believes fair value estimates are based upon Level 3 inputs since there is no secondary market for its ownership interest. Accordingly, until the next round of financing or any other significant financial transaction, value estimates will primarily be based on assumptions relating to meeting product development and commercialization milestones, cash flow projections (projections of development and commercialization milestone payments, sales, costs, expenses, capital expenditures and working capital investment) and discounting of these factors for their high degree of risk. If kaléo does not meet its development and commercialization milestones and there are indications that the amount or timing of its projected cash flows or related risks are unfavorable versus the most recent valuation, or a new round of financing or other significant financial transaction indicates a lower enterprise value, then the Company’s estimate of the fair value of its ownership interest in kaléo is likely to decline. Adjustments to the estimated fair value of this investment will be made in the period upon which such changes can be quantified.
	The fair market valuation of Tredegar’s interest in kaléo is sensitive to changes in the weighted average cost of capital used to discount cash flow projections for the high degree of risk associated with meeting development and commercialization milestones as anticipated. The weighted average cost of capital used in the fair market valuation of the Company’s interest in kaléo was 45% and 55% at December 31, 2014 and 2013, respectively. In 2014, the weighted average cost of capital used to discount cash flow projections was decreased to reflect lower product risk after the U.S. Food and Drug Administration’s approval of kaléo’s naloxone auto-injector for emergency treatment of known or suspected opioid overdoses and reduced funding risk subsequent to kaléo securing new debt financing, both of which occurred in April 2014. At December 31, 2014, the effect of a 500 basis point decrease in the weighted average cost of capital assumption would have further increased the fair value of Tredegar’s interest in kaléo by approximately $6 million, and a 500 basis point increase in the weighted average cost of capital assumption would have decreased the fair value of the Company’s interest by approximately $6 million.
	Had the Company not elected to account for its investment under the fair value method, it would have been required to use the equity method of accounting. The condensed balance sheets for kaléo at December 31, 2014 and 2013 and related condensed statements of operations for the last three years ended December 31, 2014, that were reported by kaléo, are provided below:
			December 31,							December 31,
	(In Thousands)		2014			2013				2014			2013
	Assets:								Liabilities & Equity:
	Cash & short-term investments		$	117,589		$	33,560		Long-term debt, net of discount, current portion	$	—		$	5,414
	Restricted cash		14,498			—			Other current liabilities	8,123			4,845
	Other current assets		17,916			5,682			Other noncurrent liabilities	1,247			3,098
	Property & equipment		10,824			10,559			Long-term debt, net of discount	149,471			9,372
	Patents		2,702			2,433			Redeemable preferred stock	22,946			21,970
	Other long-term assets		2,857			445			Equity	(15,401		)	7,980
	Total assets		$	166,386		$	52,679		Total liabilities & equity	$	166,386		$	52,679
		2014			2013			2012
	Revenues & Expenses:
	Revenues	$	21,156		$	15,305		$	38,179
	Cost of goods sold	(3,801		)	—			—
	Expenses and other, net (a)	(48,447		)	(18,631		)	(13,073		)
	Income tax (expense) benefit	8,100			1,586			(9,642		)
	Net income (loss)	$	(22,992	)	$	(1,740	)	$	15,464
	(a) “Expenses and other, net” includes selling, general and administrative expense, research and development expense, interest expense and other income (expense), net.
	The audited financial statements and accompanying footnotes of kaléo as of December 31, 2014 and 2013 and for the years ended December 31, 2014, 2013 and 2012 have been included as an exhibit to the Company’s Annual Report on Form 10-K for the year ended December 31, 2014 filed with the Securities and Exchange Commission.
	On April 2, 2007, Tredegar invested $10.0 million in Harbinger Capital Partners Special Situations Fund, L.P. (the “Harbinger Fund”), a private investment fund that is subject to limitations on withdrawal. There is no secondary market for interests in the fund. The Company’s investment in the Harbinger Fund, which represents less than 2% of its total partnership capital, is accounted for under the cost method. Unrealized losses on the Company’s investment in the Harbinger Fund (included in “Other income (expense), net” in the consolidated statements of income) were $0.8 million ($0.4 million after taxes), $0.4 million ($0.3 million after taxes) and $1.1 million ($0.7 million after taxes) in 2014, 2013 and 2012, respectively, as a result of a reduction in the estimated fair value of the investment that is not expected to be temporary. The December 31, 2014 and 2013 carrying value in the consolidated balance sheets (included in “Other assets and deferred charges”) was $1.8 million and $2.8 million, respectively. The carrying value at December 31, 2014 reflected Tredegar’s cost basis in its investment in Harbinger, net of total withdrawal proceeds received and unrealized losses. Withdrawal proceeds were $0.2 million in 2014, $0.4 million in 2013 and $0.5 million in 2012. The timing and amount of future installments of withdrawal proceeds was not known as of December 31, 2014. There were no realized gains or losses associated with the investment in the Harbinger Fund in 2014, 2013 and 2012. Gains on the Company’s investment in the Harbinger Fund, if any, will be recognized when the amounts expected to be collected from withdrawal from the investment are known, which will likely be when cash in excess of the remaining carrying value is received. Losses will be recognized if management believes it is probable that future withdrawal proceeds will not exceed the remaining carrying value.
	Tredegar has investment property in Alleghany and Bath County, Virginia. The Company realized a gain (included in “Other income (expense), net” in the consolidated statements of income) of $1.2 million ($0.8 million after taxes) on a sale of a portion of this investment property in 2014. The Company recorded an unrealized loss on its investment property in Alleghany and Bath County, Virginia of $1.0 million ($0.6 million after taxes) in 2013 as a result of a reduction in the estimated fair value of the investment that is not expected to be temporary. The Company’s carrying value in this investment property (included in “Other assets and deferred charges” on the consolidated balance sheets) was $2.6 million at December 31, 2014 and $5.9 million at December 31, 2013.

Business_Segments

Business Segments	12 Months Ended
	Dec. 31, 2014
Segment Reporting [Abstract]
Business Segments	BUSINESS SEGMENTS
	Tredegar’s primary business segments are Film Products and Aluminum Extrusions. Beginning in February 2010, the Company started reporting an additional segment, Other, comprised of the start-up operations of Bright View and Falling Springs. Effective January 1, 2012, the operations and results of Bright View were incorporated into Film Products to leverage research and development efforts and accelerate new product development. As discussed in Note 3, Falling Springs was divested in November 2012. All historical results for this business have been reflected as discontinued operations. With the sale of Falling Springs, there is no longer an Other segment to report.
	Information by business segment and geographic area for the last three years is provided below. There were no accounting transactions between segments and no allocations to segments. Net sales (sales less freight) and operating profit from ongoing operations are the measures of sales and operating profit used by the chief operating decision maker for purposes of assessing performance. Film Products’ net sales to The Procter & Gamble Company (“P&G”) totaled $220.8 million in 2014, $261.9 million in 2013 and $264.0 million in 2012. These amounts include plastic film sold to others that convert the film into materials used with products manufactured by P&G.
	Net Sales
	(In Thousands)		2014			2013			2012
	Film Products		$	578,687		$	621,239		$	611,877
	Aluminum Extrusions		344,346			309,482			245,465
	Total net sales		923,033			930,721			857,342
	Add back freight		28,793			28,625			24,846
	Sales as shown in consolidated statements of income		$	951,826		$	959,346		$	882,188
	Operating Profit
	(In Thousands)		2014			2013			2012
	Film Products:
	Ongoing operations		$	58,054		$	70,966		$	69,950
	Plant shutdowns, asset impairments, restructurings and other (a)		(12,827		)	(671		)	(109		)
	Aluminum Extrusions:
	Ongoing operations		25,664			18,291			9,037
	Plant shutdowns, asset impairments, restructurings and other (a)		(976		)	(2,748		)	(5,427		)
	Total		69,915			85,838			73,451
	Interest income		588			594			418
	Interest expense		2,713			2,870			3,590
	Gain on investment accounted for under the fair value method (a)		2,000			3,400			16,100
	Gain on sale of investment property (a)		1,208			—			—
	Unrealized loss on investment property (a)		—			1,018			—
	Stock option-based compensation expense		1,272			1,155			1,432
	Corporate expenses, net (a)		24,310			31,857			23,443
	Income from continuing operations before income taxes		45,416			52,932			61,504
	Income taxes (a)		9,387			16,995			18,319
	Income from continuing operations		36,029			35,937			43,185
	Income (loss) from discontinued operations (a)		850			(13,990		)	(14,934		)
	Net income		$	36,879		$	21,947		$	28,251
	See footnotes on page 63.
	Identifiable Assets
	(In Thousands)		2014			2013
	Film Products		$	546,210		$	556,873
	Aluminum Extrusions		143,328			134,928
	Subtotal		689,538			691,801
	General corporate (b)		49,032			48,590
	Cash and cash equivalents (d)		50,056			52,617
	Total		$	788,626		$	793,008
			Depreciation and Amortization									Capital Expenditures
	(In Thousands)		2014			2013			2012			2014		2013		2012
	Film Products		$	30,730		$	35,332		$	39,202		$	38,806	$	64,867	$	30,484
	Aluminum Extrusions		9,974			9,202			9,984			6,092		14,742		2,332
	Subtotal		40,704			44,534			49,186			44,898		79,609		32,816
	General corporate		114			121			73			—		52		436
	Continuing operations		40,818			44,655			49,259			44,898		79,661		33,252
	Discontinued operations		—			—			10			—		—		—
	Total		$	40,818		$	44,655		$	49,269		$	44,898	$	79,661	$	33,252
	Net Sales by Geographic Area (d)
	(In Thousands)		2014			2013			2012
	United States		$	542,395		$	534,346		$	480,041
	Exports from the United States to:
	Asia		72,597			82,235			57,639
	Canada		47,391			46,481			46,948
	Europe		10,874			6,984			5,186
	Latin America		3,116			3,505			3,145
	Operations outside the United States:
	Brazil		97,954			109,415			121,373
	The Netherlands		74,329			68,471			67,758
	Hungary		39,457			43,482			41,285
	China		26,109			28,702			30,636
	India		8,811			7,100			3,331
	Total (c)		$	923,033		$	930,721		$	857,342
		Identifiable Assets						Property, Plant & Equipment,
		by Geographic Area (d)						Net by Geographic Area (d)
(In Thousands)		2014			2013			2014			2013
United States (b)		$	409,272		$	419,234		$	115,189		$	141,444
Operations outside the United States:
Brazil		212,186			191,415			119,066			99,956
The Netherlands		23,729			32,156			9,117			14,172
China		23,037			25,165			14,141			14,430
Hungary		13,440			17,681			5,829			7,461
India		7,874			6,150			5,575			4,007
General corporate (b)		49,032			48,590			1,040			1,090
Cash and cash equivalents (d)		50,056			52,617			n/a			n/a
Total		$	788,626		$	793,008		$	269,957		$	282,560
See footnotes on page 63 and a reconciliation of net sales to sales as shown in the consolidated statements of income on page 61.
Net Sales by Product Group
(In Thousands)		2014			2013			2012
Film Products:
Personal care materials		$	317,080		$	339,559		$	327,161
Flexible packaging films		114,348			125,712			138,028
Surface protection films		90,129			90,182			69,627
Polyethylene overwrap and polypropylene films		44,263			56,590			63,796
Films for other markets		12,867			9,196			13,265
Subtotal		578,687			621,239			611,877
Aluminum Extrusions:
Nonresidential building & construction		200,707			179,437			165,159
Consumer durables		44,897			39,565			12,259
Machinery & equipment		26,907			21,936			8,773
Automotive		22,272			19,919			11,757
Residential building & construction		21,470			22,055			23,555
Distribution		15,318			13,115			15,227
Electrical		12,775			13,455			8,735
Subtotal		344,346			309,482			245,465
Total		$	923,033		$	930,721		$	857,342
(a)	See Notes 1, 3, 4 and 18 for more information on losses associated with plant shutdowns, asset impairments and restructurings, unusual items, gains or losses from sale of assets, gains or losses on an investment accounted for under the fair value method and other items.
(b)	The balance sheets include the funded status of each of the Company’s defined benefit pension and other postretirement plans. The funded status of the Company’s defined benefit pension plan was a net liability of $96.4 million and $42.5 million as of December 31, 2014 and 2013, respectively. See Note 14 for more information on the Company’s pension and other postretirement plans.
(c)	The difference between total consolidated sales as reported in the consolidated statements of income and segment, geographic and product group net sales reported in this note is freight of $28.8 million in 2014, $28.6 million in 2013 and $24.8 million in 2012.
(d)	Information on exports and foreign operations are provided on the previous page. Cash and cash equivalents includes funds held in locations outside the U.S. of $40.5 million and $38.6 million at December 31, 2014 and 2013, respectively. Export sales relate almost entirely to Film Products. Operations outside the U.S. in The Netherlands, Hungary, China, Brazil and India also relate to Film Products. Sales from locations in The Netherlands and Hungary are primarily to customers located in Europe. Sales from locations in China (Guangzhou and Shanghai) are primarily to customers located in China, but also include other customers in Asia.

Accounts_And_Other_Receivables

Accounts And Other Receivables	12 Months Ended
	Dec. 31, 2014
Accounts and Notes Receivable, Net [Abstract]
Accounts And Other Receivables	ACCOUNTS AND OTHER RECEIVABLES
	Accounts and other receivables consist of the following:
	(In Thousands)	2014			2013
	Trade, less allowance for doubtful accounts and sales returns of $2,610 in 2014 and $3,327 in 2013	$	106,093		$	94,684
	Other	7,248			4,562
	Total	$	113,341		$	99,246
	A reconciliation of the beginning and ending balances of the allowance for doubtful accounts and sales returns for the three years ended December 31, 2014 is as follows:
	(In Thousands)	2014			2013			2012
	Balance, beginning of year	$	3,327		$	3,552		$	3,539
	Charges to expense	1,344			1,874			1,589
	Recoveries	(1,654		)	(1,760		)	(1,076		)
	Write-offs	(153		)	(285		)	(588		)
	Foreign exchange and other	(254		)	(54		)	88
	Balance, end of year	$	2,610		$	3,327		$	3,552

Inventories

Inventories	12 Months Ended
	Dec. 31, 2014
Inventory, Net [Abstract]
Inventories	INVENTORIES
	Inventories consist of the following:
	(In Thousands)	2014		2013
	Finished goods	$	17,559	$	14,953
	Work-in-process	10,089		7,750
	Raw materials	25,227		24,477
	Stores, supplies and other	21,433		23,483
	Total	$	74,308	$	70,663
	Inventories stated on the LIFO basis amounted to $12.2 million at December 31, 2014 and $10.0 million at December 31, 2013, which are below replacement costs by approximately $18.3 million at December 31, 2014 and $15.8 million at December 31, 2013. During 2014, 2013 and 2012, certain inventories accounted for on a LIFO basis declined, which resulted in cost of goods sold being stated at below current replacement costs, by approximately $1.0 million in Film Products in 2014, $0.9 million in Film Products in 2013 and $2.7 million in 2012 ($1.1 million in Film Products and $1.6 million in Aluminum Extrusions).

Goodwill_And_Other_Intangible_

Goodwill And Other Intangible Assets	12 Months Ended
	Dec. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill And Other Intangible Assets	GOODWILL AND OTHER INTANGIBLE ASSETS
	The components of goodwill and other intangibles at December 31, 2014 and 2013, and related amortization periods for continuing operations are as follows:
	(In Thousands)		2014			2013			Amortization Periods
	Goodwill		$	169,687		$	172,788		Not amortized
	Other identifiable intangibles:
	Customer relationships (cost basis of $29,117 in 2014 and $31,357 in 2013)		21,620			25,962			10-12 years
	Proprietary technology (cost basis of $18,228 in 2014 and $18,851 in 2013)		11,824			14,356			Not more than 15 years
	Trade names		11,998			12,594			Indefinite life
	Non-compete agreements (cost basis of $4,154 in 2014 and 2013)		—			600			2 years
	Total carrying value of other intangibles		45,442			53,512
	Total carrying value of goodwill and other intangibles		$	215,129		$	226,300
	A reconciliation of the beginning and ending balance of goodwill for each of the three years in the period ended December 31, 2014 is as follows:
	(In Thousands)		2014			2013			2012
	Net carrying value of goodwill, beginning of year		$	172,788		$	176,620		$	165,372
	Acquisitions		—			—			13,695
	Increase (decrease) due to foreign currency translation		(3,101		)	(3,832		)	(2,447		)
	Net carrying value of goodwill, end of year		$	169,687		$	172,788		$	176,620
	At December 31, 2014, the goodwill balance was $156.0 million for Film Products and $13.7 million for Aluminum Extrusions.
	Amortization expense for continuing operations over the next five years is expected to be as follows:
	Year	Amount
		(In Thousands)
	2015	$	4,741
	2016	4,702
	2017	4,702
	2018	4,702
	2019	4,568

Financial_Instruments

Financial Instruments	12 Months Ended
	Dec. 31, 2014
Summary of Derivative Instruments [Abstract]
Financial Instruments	FINANCIAL INSTRUMENTS
	Tredegar uses derivative financial instruments for the purpose of hedging margin exposure from fixed-price forward sales contracts in Aluminum Extrusions and currency exchange rate exposures that exist as part of ongoing business operations (primarily in Film Products). These derivative financial instruments are designated as and qualify as cash flow hedges and are recognized in the consolidated balance sheet at fair value. The fair value of derivative instruments recorded on the consolidated balance sheets are based upon Level 2 inputs. If individual derivative instruments with the same counterparty can be settled on a net basis, the Company records the corresponding derivative fair values as a net asset or net liability.
	In the normal course of business, Aluminum Extrusions enters into fixed-price forward sales contracts with certain customers for the future sale of fixed quantities of aluminum extrusions at scheduled intervals. In order to hedge margin exposure created from the fixing of future sales prices relative to volatile raw material (aluminum) costs, Aluminum Extrusions enters into a combination of forward purchase commitments and futures contracts to acquire or hedge aluminum, based on the scheduled purchases for the firm sales commitments. The fixed-price firm sales commitments and related hedging instruments generally have durations of not more than 12 months, and the notional amount of aluminum futures contracts that hedged future purchases of aluminum to meet fixed-price forward sales contract obligations was $8.6 million (7.8 million pounds of aluminum) at December 31, 2014 and $8.0 million (8.4 million pounds of aluminum) at December 31, 2013.
	The table below summarizes the location and gross amounts of aluminum derivative contract fair values (Level 2) in the consolidated balance sheets as of December 31, 2014 and 2013:
		31-Dec-14						31-Dec-13
	(In Thousands)	Balance Sheet		Fair				Balance Sheet	Fair
		Account		Value				Account	Value
	Derivatives Designated as Hedging Instruments
	Asset derivatives:	Accrued expenses		$	82			Accrued expenses	$	31
	Aluminum futures contracts
	Liability derivatives:	Accrued expenses		$	(318	)		Accrued expenses	$	(178	)
	Aluminum futures contracts
	Derivatives Not Designated as Hedging Instruments
	Asset derivatives:	Accrued expenses		$	7			Accrued expenses	$	—
	Aluminum futures contracts
	Liability derivatives:	Accrued expenses		$	(7	)		Accrued expenses	$	—
	Aluminum futures contracts
	Net asset (liability)			$	(236	)			$	(147	)
	In the event that a counterparty to an aluminum fixed-price forward sales contract chooses not to take delivery of its aluminum extrusions, the customer is contractually obligated to compensate Aluminum Extrusions for any losses on the related aluminum futures and/or forward contracts through the date of cancellation. The offsetting asset and liability positions included in the table above are associated with the unwinding of aluminum futures contracts due to such cancellations.
	Film Products used future fixed Euro-denominated contractual payments for equipment being purchased as part of its multi-year capacity expansion project at the film products manufacturing facility in Cabo de Santo Agostinho, Brazil. The Company used fixed rate Euro forward contracts with various settlement dates through February 2014 to hedge exchange rate exposure on these obligations. The Company had fixed rate forward contracts with outstanding notional amounts of €2.1 million as of December 31, 2013 (none at December 31, 2014).
	The table below summarizes the location and gross amounts of foreign currency forward contract fair values (Level 2) in the consolidated balance sheets as of December 31, 2014 and 2013:
		31-Dec-14						31-Dec-13
	(In Thousands)	Balance Sheet		Fair				Balance Sheet	Fair
		Account		Value				Account	Value
	Derivatives Designated as Hedging Instruments
	Asset derivatives:			$	—			Prepaid expenses	$	47
	Foreign currency forward contracts							and other
	Net asset (liability)			$	—				$	47
	Tredegar receives Euro-based royalty payments relating to its operations in Europe. From time to time Tredegar uses zero-cost collar currency options to hedge a portion of its exposure to changes in cash flows due to variability in U.S. Dollar and Euro exchange rates. There were no outstanding notional amounts on these collars at December 31, 2014 and 2013 as there were no derivatives outstanding related to the hedging of royalty payments with currency options.
	The counterparties to the Company’s forward purchase commitments are major aluminum brokers and suppliers, and the counterparties to aluminum futures contracts are major financial institutions. Fixed-price forward sales contracts are only made available to the best and most credit-worthy customers. The counterparties to Tredegar’s foreign currency futures and zero-cost collar contracts are major financial institutions.
	The pretax effect on net income (loss) and other comprehensive income (loss) of derivative instruments classified as cash flow hedges and described in the previous paragraphs for years ended December 31, 2014, 2013, and 2012 is summarized in the tables below:
	(In Thousands)	Cash Flow Derivative Hedges
		Aluminum Futures Contracts										Foreign Currency Forwards and Options
	Years Ended December 31,	2014				2013			2012			2014			2013			2012
	Amount of pre-tax gain (loss) recognized in other comprehensive income	$	542			$	(868	)	$	(232	)	$	(120	)	$	(77	)	$	1,421
	Location of gain (loss) reclassified from accumulated other comprehensive income into net income (effective portion)	Cost of				Cost of			Cost of			Cost of
		sales				sales			sales			sales
	Amount of pre-tax gain (loss) reclassified from accumulated other comprehensive income to net income (effective portion)	$	631			$	(583	)	$	(1,026	)	$	16		$	—		$	—
	Gains and losses on the ineffective portion of derivative instruments or derivative instruments that were not designated as hedging instruments were not significant in 2014, 2013 and 2012. For the years ended December 31, 2014, 2013 and 2012, unrealized net losses from hedges that were discontinued were not significant. As of December 31, 2014, the Company expects $0.2 million of unrealized after-tax losses on derivative instruments reported in accumulated other comprehensive income to be reclassified to earnings within the next 12 months.

Accrued_Expenses

Accrued Expenses	12 Months Ended
	Dec. 31, 2014
Accrued Liabilities [Abstract]
Accrued Expenses	ACCRUED EXPENSES
	Accrued expenses consist of the following:
	(In Thousands)	2014			2013
	Vacation	$	7,266		$	7,077
	Payrolls, related taxes and medical and other benefits	4,119			5,679
	Incentive compensation	3,803			4,148
	Workers’ compensation and disabilities	3,007			2,753
	Accrued utilities	2,186			2,494
	Taxes other than federal income and payroll	841			2,153
	Contractual indemnification claims (see note 3)	—			2,604
	Other	10,827			15,250
	Total	$	32,049		$	42,158
	A reconciliation of the beginning and ending balances of accrued expenses associated with asset impairments and costs associated with exit and disposal activities for each of the three years in the period ended December 31, 2014 is as follows:
	(In Thousands)	Severance			Asset Impairments			Other (a)			Total
	Balance at January 1, 2012	$	197		$	—		$	—		$	197
	For the year ended December 31, 2012:
	Charges	1,562			1,077			2,255			4,894
	Cash spend	(1,463		)	—			(1,670		)	(3,133		)
	Charges against assets	—			(1,077		)	—			(1,077		)
	Balance at December 31, 2012	296			—			585			881
	For the year ended December 31, 2013:
	Charges	671			172			569			1,412
	Cash spend	(636		)	—			(798		)	(1,434		)
	Charges against assets	—			(172		)	—			(172		)
	Balance at December 31, 2013	331			—			356			687
	For the year ended December 31, 2014:
	Charges	2,668			227			131			3,026
	Cash spend	(2,753		)	—			(286		)	(3,039		)
	Charges against assets	—			(227		)	—			(227		)
	Balance at December 31, 2014	$	246		$	—		$	201		$	447
	(a)	Other includes other shutdown-related costs associated with the shutdown of the Company’s aluminum extrusions manufacturing facility in Kentland, Indiana.
	See Note 18 for more information on plant shutdowns, asset impairments and restructurings of continuing operations.

Debt_And_Credit_Agreements

Debt And Credit Agreements	12 Months Ended
	Dec. 31, 2014
Debt Disclosure [Abstract]
Debt And Credit Agreements	DEBT AND CREDIT AGREEMENTS
	On April 23, 2012, Tredegar entered into a $350 million five-year, unsecured revolving credit facility (the “Credit Agreement”), with an option to increase that amount by an additional $75 million. The Credit Agreement replaced the previous $300 million four-year, unsecured revolving credit facility that was due to expire on June 21, 2014. In connection with the refinancing, the Company borrowed $102 million under the Credit Agreement, which was used, together with available cash on hand, to repay all indebtedness under the previous revolving credit facility.
	Borrowings under the Credit Agreement bear an interest rate of LIBOR plus a credit spread and commitment fees charged on the unused amount under the Credit Agreement at various indebtedness-to-adjusted-EBITDA levels as follows:
	Pricing Under Credit Revolving Agreement (Basis Points)
	Indebtedness-to-Adjusted EBITDA Ratio		Credit Spread	Commitment
			Over LIBOR	Fee
	> 2.0x but <=.0x		200	35
	> 1.0x but <=0x		175	30
	<=.0x		150	25
	At December 31, 2014, the interest cost on debt borrowed under the Credit Agreement was priced at one-month LIBOR plus the applicable credit spread of 175 basis points.
	The most restrictive covenants in the Credit Agreement include:
	•	Maximum indebtedness-to-adjusted EBITDA of 3.0x;
	•	Minimum adjusted EBIT-to-interest expense of 2.5x;
	•	Maximum aggregate distributions to shareholders over the term of the Credit Agreement of $100 million plus, beginning with the fiscal quarter ended March 31, 2012, 50% of net income; and
	•	Minimum shareholders’ equity (as defined in the Credit Agreement) at any point during the term of the Credit Agreement of at least $320 million increased on a cumulative basis at the end of each fiscal quarter, beginning with the fiscal quarter ended March 31, 2012, by an amount equal to 50% of net income (to the extent positive).
	At December 31, 2014, based upon the most restrictive covenants within the Credit Agreement, available credit under the Credit Agreement was approximately $155 million. Total debt due and outstanding at December 31, 2014 is summarized below:
	Debt Due and Outstanding at December 31, 2014
	(In Thousands)
	Year Due	Credit		Other		Total Debt
		Agreement				Due
	2015	$	—	$	—	$	—
	2016	—		—		—
	2017	137,250		—		137,250
	2018	—		—		—
	2019	—		—		—
	Total	$	137,250	$	—	$	137,250
	Tredegar believes that it was in compliance with all of its debt covenants as of December 31, 2014. Noncompliance with any of the debt covenants may have a material adverse effect on financial condition or liquidity in the event such noncompliance cannot be cured or should the Company be unable to obtain a waiver from the lenders. Renegotiation of the covenant through an amendment to the Credit Agreement may effectively cure the noncompliance, but may have an effect on financial condition or liquidity depending upon how the covenant is renegotiated.

Shareholder_Rights_Agreement

Shareholder Rights Agreement	12 Months Ended
	Dec. 31, 2014
Warrants and Rights Note Disclosure [Abstract]
Shareholder Rights Agreement	SHAREHOLDER RIGHTS AGREEMENT
	Pursuant to the Second Amended and Restated Rights Agreement (the “Rights Agreement”), dated as of November 18, 2013, with Computershare Trust Company, N.A., as Rights Agent, one purchase right (a “Right”) was attached to each outstanding share of Tredegar’s Common Stock.  Each Right entitled the registered holder to purchase from Tredegar one one-hundredth of a share of Tredegar’s Series A Participating Cumulative Preferred Stock (the “Preferred Stock”) at an exercise price of $150, subject to adjustment (the “Purchase Price”). Unless otherwise noted in the Rights Agreement, the Rights would have become exercisable, if not earlier redeemed, only if a person or group (i) acquires beneficial ownership of 20% or more of the outstanding shares of the Company’s Common Stock or (ii) commences, or publicly discloses an intention to commence, a tender offer or exchange offer that would result in beneficial ownership by a person or group of 20% or more of the outstanding shares of the Company’s Common Stock (in each case thereby becoming an “Acquiring Person”).
	On February 19, 2014, Tredegar’s Board of Directors authorized the termination of the Rights Agreement and the redemption of all of the outstanding Rights, at a redemption price of $.01 per Right to be paid in cash to shareholders of record as of the close of business on March 3, 2014, with the payment date of such redemption price to be on March 7, 2014. The corresponding redemption payment of $0.3 million was made in 2014.

Stock_Option_And_Stock_Award_P

Stock Option And Stock Award Plans	12 Months Ended
	Dec. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock Option And Stock Award Plans	STOCK OPTION AND STOCK AWARD PLANS
	Tredegar has one equity incentive plan under which stock options may be granted to purchase a specified number of shares of common stock at a price no lower than the fair market value on the date of grant and for a term not to exceed 10 years. In addition, the Company has one other equity incentive plan under which there are options that remain outstanding, but no future grants can be made. Prior to 2012, employee options ordinarily vested two years from the date of grant. Employee options granted in 2012 and thereafter ordinarily vest over a four-year period, with a quarter of the options granted vesting on each year on the grant date anniversary. The option plans also permit the grant of stock appreciation rights (“SARs”), stock, restricted stock, stock unit awards and incentive awards. Restricted stock grants ordinarily vest three years from the date of grant based upon continued employment and/or the achievement of certain performance targets. No SARs have been granted since 1992 and none are currently outstanding.
	A summary of stock options outstanding at December 31, 2014, 2013 and 2012, and changes during those years, is presented below:
				Option Exercise Price/Share
		Number of		Range										Weighted
		Options												Average
	Outstanding at January 1, 2012	1,121,500		$	14.06			to		$	19.84			$	17.4
	Granted	182,100		18.51				to		19.4				19.34
	Forfeited and Expired	(50,300	)	15.8				to		19.84				19.34
	Exercised	(176,600	)	14.72				to		18.12				16.33
	Outstanding at December 31, 2012	1,076,700		14.06				to		19.84				17.81
	Granted	184,700		24.84				to		30.01				24.97
	Forfeited and Expired	(34,000	)	15.11				to		24.84				21.1
	Exercised	(180,600	)	14.27				to		19.84				17.32
	Outstanding at December 31, 2013	1,046,800		14.06				to		30.01				19.06
	Granted	181,476		19.84				to		22.49				22.41
	Forfeited and Expired	(22,581	)	15.8				to		24.84				21.42
	Exercised	(41,575	)	15.8				to		19.84				17.55
	Outstanding at December 31, 2014	1,164,120		$	14.06			to		$	30.01			$	19.59
	The following table summarizes additional information about stock options outstanding and exercisable at December 31, 2014:
										Options Outstanding at										Options Exercisable at
										December 31, 2014										December 31, 2014
													Weighted Average				Aggregate Intrinsic Value						Aggregate Intrinsic Value
	Range of									Shares			Remaining Contractual Life (Years)		Exercise		(In Thousands)			Shares	Weighted		(In Thousands)
	Exercise Prices														Price						Average
																					Exercise
																					Price
	$	—		to		$	15			26,000			0.9		$	14.06	$	219		26,000	$	14.06	$	219
	15.01			to		17.5				314,500			1.2		16.53		1,873			314,500	16.53		1,873
	17.51			to		20				488,870			3.3		19.03		1,693			417,550	18.97		1,470
	20.01			to		25				330,250			8.7		23.61		—			40,875	24.84		—
	25.01			to		30.01				4,500			8.6		30.01		—			1,125	30.01		—
	Total									1,164,120			4.2		$	19.59	$	3,785		800,050	$	18.17	$	3,562
	The following table summarizes additional information about non-vested restricted stock outstanding at December 31, 2014:
		Non-vested Restricted Stock										Maximum Non-vested Restricted Stock Units Issuable Upon Satisfaction of Certain Performance Criteria
		Number		Weighted Avg. Grant Date Fair Value/Share				Grant Date				Number			Weighted Avg. Grant Date Fair Value/Share		Grant Date
		of Shares						Fair Value				of Shares					Fair Value
								(In Thousands)									(In Thousands)
	Outstanding at January 1, 2012	126,150		$	18.25			$	2,302			85,000			$	19.35	$	1,645
	Granted	94,949		19.06				1,810				87,200			18.79		1,638
	Vested	(60,357	)	18.01				(1,087		)		—			—		—
	Forfeited	(16,842	)	18.82				(317		)		(80,400	)		19.31		(1,553		)
	Outstanding at December 31, 2012	143,900		18.82				2,708				91,800			18.85		1,730
	Granted	93,425		25.45				2,378				77,200			27.82		2,148
	Vested	(58,175	)	20.15				(1,172		)		—			—		—
	Forfeited	(21,300	)	20.7				(441		)		(36,700	)		19.83		(728		)
	Outstanding at December 31, 2013	157,850		22				3,473				132,300			23.81		3,150
	Granted	95,707		22.18				2,123				59,675			21.54		1,285
	Vested	(54,921	)	20.73				(1,139		)		—			—		—
	Forfeited	(10,578	)	21.76				(230		)		(62,262	)		19.18		(1,194		)
	Outstanding at December 31, 2014	188,058		$	22.48			$	4,227			129,713			$	24.99	$	3,241
	The total intrinsic value of stock options exercised was $0.1 million in 2014, $1.3 million in 2013 and $0.5 million in 2012. The grant-date fair value of stock option-based awards vested was $0.7 million in 2014, $1.7 million in 2013 and $2.1 million in 2012. As of December 31, 2014, there was unrecognized compensation cost of $1.3 million related to stock option-based awards and $2.3 million related to non-vested restricted stock and other stock-based awards. This cost is expected to be recognized over the remaining weighted average period of 1.4 years for stock option-based awards and 1.4 years for non-vested restricted stock and other stock-based awards.
	Stock options exercisable totaled 800,050 at December 31, 2014 and 769,825 shares at December 31, 2013. Stock options available for grant totaled 2,198,235 shares at December 31, 2014.

Retirement_Plans_And_Other_Pos

Retirement Plans And Other Postretirement Benefits	12 Months Ended
	Dec. 31, 2014
Compensation and Retirement Disclosure [Abstract]
Retirement Plans And Other Postretirement Benefits	RETIREMENT PLANS AND OTHER POSTRETIREMENT BENEFITS
	Tredegar sponsors noncontributory defined benefit (pension) plans covering certain current and former employees. The plans for salaried and hourly employees currently in effect are based on a formula using the participant’s years of service and compensation or using the participant’s years of service and a dollar amount. The plan is closed to new participants, and pay for active participants of the plan was frozen as of December 31, 2007. Beginning in 2014, with the exception of plan participants at two of the Company’s U.S. manufacturing facilities, the plan no longer accrues benefits associated with crediting employees for service, thereby freezing all future benefits under the plan.
	In addition to providing pension benefits, the Company provides postretirement life insurance and health care benefits for certain groups of employees. Tredegar and retirees share in the cost of postretirement health care benefits, with employees hired on or before January 1, 1993, receiving a fixed subsidy to cover a portion of their health care premiums. The Company eliminated prescription drug coverage for Medicare-eligible retirees as of January 1, 2006. Consequently, Tredegar is not eligible for any federal subsidies.
	The following tables reconcile the changes in benefit obligations and plan assets in 2014 and 2013, and reconcile the funded status to prepaid or accrued cost at December 31, 2014 and 2013:
			Pension Benefits									Other Post-
												Retirement Benefits
	(In Thousands)		2014				2013					2014				2013
	Change in benefit obligation:
	Benefit obligation, beginning of year		$	275,166			$	302,285				$	7,858			$	8,879
	Service cost		869				3,754					43				58
	Interest cost		13,397				12,338					387				345
	Effect of actuarial (gains) losses related to the following:
	Discount rate change		32,089				(26,848		)			732				(746		)
	Retirement rate assumptions and mortality table adjustments		17,331				(144		)			(131		)		—
	Retiree medical participation rate change		—				—					(390		)		—
	Other		490				(3,058		)			218				(382		)
	Plan participant contributions		—				—					681				683
	Benefits paid		(13,916		)		(13,161		)			(1,026		)		(979		)
	Benefit obligation, end of year		$	325,426			$	275,166				$	8,372			$	7,858
	Change in plan assets:
	Plan assets at fair value, beginning of year		$	232,705			$	219,035				$	—			$	—
	Actual return on plan assets		7,466				21,657					—				—
	Employer contributions		2,762				5,174					345				296
	Plan participant contributions		—				—					681				683
	Benefits paid		(13,916		)		(13,161		)			(1,026		)		(979		)
	Plan assets at fair value, end of year		$	229,017			$	232,705				$	—			$	—
	Funded status of the plans		$	(96,409	)		$	(42,461	)			$	(8,372	)		$	(7,858	)
	Amounts recognized in the consolidated balance sheets:
	Accrued expenses (current)		$	130			$	—				$	456			$	—
	Other noncurrent liabilities		96,279				42,461					7,916				7,858
	Net amount recognized		$	96,409			$	42,461				$	8,372			$	7,858
	Assumptions used for financial reporting purposes to compute net benefit income or cost and benefit obligations for continuing operations, and the components of net periodic benefit income or cost for continuing operations, are as follows:
			Pension Benefits													Other Post-
																Retirement Benefits
	(In Thousands, Except Percentages)		2014				2013				2012					2014				2013				2012
	Weighted-average assumptions used to determine benefit obligations:
	Discount rate		4.17		%		4.99		%		4.21		%			4.11		%		4.88		%		4.1		%
	Weighted-average assumptions used to determine net periodic benefit cost:
	Discount rate		4.99		%		4.21		%		4.95		%			4.88		%		4.1		%		4.9		%
	Expected long-term return on plan assets		7.75		%		7.75		%		8		%			n/a				n/a				n/a
	Components of net periodic benefit cost:
	Service cost		$	869			$	3,754			$	3,657				$	43			$	58			$	58
	Interest cost		13,397				12,338				13,084					387				345				385
	Expected return on plan assets		(18,301		)		(17,430		)		(19,108		)			—				—				—
	Amortization of prior service costs and gains or losses		10,688				15,028				10,377					(190		)		(210		)		(241		)
	Settlement/curtailment		81				28				99					—				—				—
	Net periodic benefit cost		$	6,734			$	13,718			$	8,109				$	240			$	193			$	202
	Net benefit income or cost is determined using assumptions at the beginning of each year. Funded status is determined using assumptions at the end of each year. The amount of the accumulated benefit obligation is the same as the projected benefit obligation. At December 31, 2014, the effect of a 1% change in the health care cost trend rate assumptions would not impact the post-retirement obligation.
	Expected benefit payments for continuing operations over the next five years and in the aggregate for 2020-2024 are as follows:
	(In Thousands)	Pension				Other Post-
		Benefits				Retirement
						Benefits
	2015	$	15,282			$	456
	2016	15,932				471
	2017	16,527				480
	2018	17,004				489
	2019	17,555				494
	2020—2024	93,535				2,511
	Amounts recognized in 2014, 2013 and 2012 before related deferred income taxes in accumulated other comprehensive income consist of:
		Pension												Other Post-Retirement
	(In Thousands)	2014				2013				2012				2014				2013				2012
	Prior service cost (benefit)	$	87			$	270			$	(887	)		$	—			$	—			$	—
	Net actuarial (gain) loss	166,678				116,519				167,009				(1,154		)		(1,773		)		(855		)
	Pension expense is expected to be $12.3 million in 2015 as the unfavorable impact of the decrease in the discount rate and change to the mortality rate are partially offset by the freezing all future service benefits for certain plan participants. The amounts before related deferred income taxes in accumulated other comprehensive income that are expected to be recognized as components of net periodic benefit or cost during 2015 are as follows:
(In Thousands)	Pension				Other Post-
					Retirement
Prior service cost (benefit)	$	24			$	—
Net actuarial (gain) loss	16,107				(160		)
The percentage composition of assets held by pension plans for continuing operations at December 31, 2014, 2013 and 2012 are as follows:
	% Composition of Plan Assets
	at December 31,
	2014			2013			2012
Pension plans related to continuing operations:
Fixed income securities	14.5	%		14	%		14.7	%
Large/mid-capitalization equity securities	13.7			13.8			10.9
Small-capitalization equity securities	4.3			4.8			5.4
International and emerging market equity securities	11			11.7			10
Total equity securities	29			30.3			26.3
Private equity and hedge funds	51.2			48.3			50
Other assets	5.3			7.4			9
Total for continuing operations	100	%		100	%		100	%
Tredegar’s targeted allocation percentage for pension plan assets and the expected long-term rate of return on assets used to determine its benefit obligation at December 31, 2014 are as follows:
	Target % Composition of Plan Assets *			Expected Long-term Return %
Pension plans related to continuing operations:
Fixed income securities	32	%		5.5	%
Large/mid-capitalization equity securities	10			8.8
Small-capitalization equity securities	4			9.9
International and emerging market equity securities	13			9.8
Total equity securities	27			9.4
Private equity and hedge funds	41			7.8
Total for continuing operations	100	%		7.5	%
*	Target percentages for the composition of plan assets represents a neutral position within the approved range of
	allocations for such assets.
Expected long-term returns are estimated by asset class and generally are based on inflation-adjusted historical returns, volatilities, risk premiums and managed asset premiums. The portfolio of fixed income securities is structured with maturities that generally match estimated benefit payments over the next 1-2 years. Other assets are primarily comprised of cash and contracts with insurance companies. The Company’s primary investment objective is to maximize total return with a strong emphasis on the preservation of capital, and it believes that over the long-term a diversified portfolio of fixed income securities, equity securities, hedge funds and private equity funds has a better risk-return profile than fixed income securities alone. The average remaining duration of benefit payments for the pension plans is about 12.7 years. The Company expects its required contributions to be approximately $2.4 million in 2015.
Estimates of the fair value of assets held by the Company’s pension plans are provided by third parties not affiliated with Tredegar. At December 31, 2014 and 2013, the pension plan assets are categorized by level within the fair value measurement hierarchy as follows:
(In Thousands)		Total				Quoted Prices				Significant				Significant
						in Active				Other				Unobservable
						Markets for				Observable				Inputs
						Identical Assets				Inputs				(Level 3)
						(Level 1)				(Level 2)
Balances at December 31, 2014:
Large/mid-capitalization equity securities		$	31,401			$	31,401			$	—			$	—
Small-capitalization equity securities		9,827				9,827				—				—
International and emerging market equity securities		25,224				11,471				13,753				—
Fixed income securities		33,281				12,661				20,620				—
Private equity and hedge funds		117,276				—				106,201				11,075
Other assets		1,741				1,741				—				—
Total plan assets at fair value		$	218,750			$	67,101			$	140,574			$	11,075
Contracts with insurance companies		10,267
Total plan assets, December 31, 2014		$	229,017
Balances at December 31, 2013:
Large/mid-capitalization equity securities		$	32,134			$	32,134			$	—			$	—
Small-capitalization equity securities		11,063				11,063				—				—
International and emerging market equity securities		27,271				13,488				13,783				—
Fixed income securities		32,601				17,770				14,831				—
Private equity and hedge funds		112,345				—				103,531				8,814
Other assets		7,871				7,871				—				—
Total plan assets at fair value		$	223,285			$	82,326			$	132,145			$	8,814
Contracts with insurance companies		9,420
Total plan assets, December 31, 2013		$	232,705
For fair value measurements of plan assets using significant unobservable inputs (Level 3), a reconciliation of the balances from January 1, 2013 to December 31, 2014 are as follows:
(In Thousands)	Private equity and
	hedge funds
Balance at January 1, 2013	$	8,356
Purchases	2,864
Sales	—
Distributions	(2,567		)
Actual return on plan assets still held at year end	161
Transfers in and/or out of Level 3	—
Balance at December 31, 2013	$	8,814
Purchases	4,142
Sales	—
Distributions	(2,088		)
Actual return on plan assets still held at year end	207
Transfers in and/or out of Level 3	—
Balance at December 31, 2014	$	11,075
Tredegar also has a non-qualified supplemental pension plan covering certain employees. Effective December 31, 2005, further participation in this plan was terminated and benefit accruals for existing participants were frozen. The plan was designed to restore all or a part of the pension benefits that would have been payable to designated participants from the principal pension plans if it were not for limitations imposed by income tax regulations. The projected benefit obligation relating to this unfunded plan was $2.4 million at December 31, 2014 and $2.4 million at December 31, 2013. Pension expense recognized for this plan was $0.1 million in 2014, $0.1 million in 2013 and $0.1 million in 2012. This information has been included in the preceding pension benefit tables.
Approximately 81 employees at the Company’s film products manufacturing facility in Kerkrade, The Netherlands are covered by a collective bargaining agreement that includes participation in a multi-employer pension plan. Pension expense recognized for participation in this plan, which is equal to required contributions, was $0.5 million in 2014, $0.5 million in 2013 and $0.5 million in 2012. This information has been excluded from the preceding pension benefit tables.

Savings_Plan

Savings Plan	12 Months Ended
	Dec. 31, 2014
Savings Plan [Abstract]
Savings Plan	SAVINGS PLAN
	Tredegar has a savings plan that allows eligible employees to voluntarily contribute a percentage of their compensation up to Internal Revenue Service (“IRS”) limitations. Effective January 1, 2007, the provisions of the savings plan provided the following benefits for salaried and certain hourly employees:
	•	The Company makes matching contributions to the savings plan of $1 for every $1 of employee contribution. The maximum matching contribution is currently 5% of base pay.
	•	The savings plan includes immediate vesting for active employees of past matching contributions as well as future matching contributions when made (compared with the previous 5-year graded vesting) and automatic enrollment at 3% of base pay unless the employee opts out or elects a different percentage.
	For February 1, 2014 through December 31, 2014, the Company reduced its matching contribution to the savings plan for salaried and non-union hourly employees to $0.50 for every $1 a participant contributes, with a maximum matching contribution of 5% of base pay during this period. The Company also has a non-qualified plan that restores matching benefits for employees suspended from the savings plan due to certain limitations imposed by income tax regulations. Charges recognized for these plans were $1.6 million in 2014, $2.6 million in 2013 and $2.5 million in 2012. The Company’s liability under the restoration plan was $1.7 million at December 31, 2014 (consisting of 74,190 phantom shares of common stock) and $2.2 million at December 31, 2013 (consisting of 75,726 phantom shares of common stock) and valued at the closing market price on those dates.
	The Tredegar Corporation Benefits Plan Trust (the “Trust”) purchased 7,200 shares of the Company’s common stock in 1998 for $0.2 million and 46,671 shares of its common stock in 1997 for $1.0 million, as a partial hedge against the phantom shares held in the restoration plan. There have been no shares purchased since 1997 except for re-invested dividends. The cost of the shares held by the Trust is shown as a reduction to shareholders’ equity in the consolidated balance sheets.

Rental_Expense_And_Contractual

Rental Expense And Contractual Commitments	12 Months Ended
	Dec. 31, 2014
Leases, Operating [Abstract]
Rental Expense And Contractual Commitments	RENTAL EXPENSE AND CONTRACTUAL COMMITMENTS
	Rental expense for continuing operations was $3.6 million in 2014, $3.4 million in 2013 and $3.6 million in 2012. Rental commitments under all non-cancelable operating leases for continuing operations as of December 31, 2014, are as follows:
	Year	Amount
		(In Thousands)
	2015	$	2,379
	2016	1,908
	2017	1,870
	2018	1,787
	2019	657
	Remainder	1,327
	Total	$	9,928
	Contractual obligations for plant construction and purchases of real property and equipment amounted to $4.9 million at December 31, 2014.

Income_Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Income Taxes	INCOME TAXES
	Income from continuing operations before income taxes and income taxes are as follows:
	(In Thousands)		2014				2013			2012
	Income from continuing operations before income taxes:
	Domestic		$	38,402			$	37,380		$	35,488
	Foreign		7,014				15,552			26,016
	Total		$	45,416			$	52,932		$	61,504
	Current income taxes:
	Federal		$	14,568			$	15,988		$	10,905
	State		2,178				1,416			796
	Foreign		4,102				4,737			7,372
	Total		20,848				22,141			19,073
	Deferred income taxes:
	Federal		(9,530		)		(2,933		)	1,212
	State		(417		)		(852		)	163
	Foreign		(1,514		)		(1,361		)	(2,129		)
	Total		(11,461		)		(5,146		)	(754		)
	Total income taxes		$	9,387			$	16,995		$	18,319
	The significant differences between the U.S. federal statutory rate and the effective income tax rate for continuing operations are as follows:
		Percent of Income Before Income
		Taxes from Continuing  Operations
		2014			2013			2012
	Income tax expense at federal statutory rate	35			35			35
	State taxes, net of federal income tax benefit	2.2			0.1			1.1
	Tax contingency accruals and tax settlements	2			2			(0.5	)
	Non-deductible expenses	0.9			0.6			0.3
	Foreign rate differences	(0.1	)		(0.7	)		(0.6	)
	Tax incentive	(0.1	)		(4.7	)		(7.0	)
	Valuation allowance for foreign operating loss carry-forwards	(0.4	)		0.5			(0.1	)
	Research and development tax credit	(0.6	)		(0.4	)		—
	Domestic Production Activities Deduction	(1.9	)		(1.4	)		(0.6	)
	Changes in estimates related to prior year tax provision	(2.3	)		(0.6	)		(0.5	)
	Unremitted earnings from foreign operations	(3.8	)		0.9			0.6
	Valuation allowance for capital loss carry-forwards	(10.2	)		0.8			1.9
	Other	—			—			0.2
	Effective income tax rate for continuing operations	20.7			32.1			29.8
	The reduction in income taxes from continuing operations in 2014 in comparison to prior years can be attributed to a pair of distinct tax adjustments. In recent years the Company has been evaluating various tax advantageous methods for executing its overall growth and international expansion strategies. The Company, having been authorized by its management in the fourth quarter of 2014 to proceed, implemented an international tax planning strategy that generated capital gains. These capital gains were offset against previously recorded capital losses on certain investments. Income taxes from continuing operations in 2014 therefore included the recognition of a tax benefit of $4.9 million related to a portion of its capital loss carryforwards that were previously offset by a valuation allowance associated with expected limitations on the utilization of historic capital losses carried over from the previous years. In addition, as previously discussed in Note 1, with the exception of Terphane Ltda., the Company accrues U.S. federal income taxes to the extent required under U.S. GAAP on unremitted earnings from foreign operations. As a result of changes in the underlying basis of certain foreign subsidiaries, income taxes from continuing operations in 2014 included an adjustment of $2.2 million in the fourth quarter, $1.7 million of which is a correction to prior years, to reverse previously accrued deferred tax liabilities accumulated over several years arising from changes in tax basis due to foreign currency translation adjustments and unremitted earnings. The corresponding prior period changes in the underlying basis of certain foreign subsidiaries primarily occurred before 2010, and the prior period components are not considered material to any period presented.
	The Brazilian federal statutory income tax rate is a composite of 34.0% (25.0% of income tax and 9.0% of social contribution on income). Terphane’s manufacturing facility in Brazil was the beneficiary of certain income tax incentives that allowed for a reduction in the statutory Brazilian federal income tax rate levied on the operating profit of its products. These incentives produce a current tax rate of 15.25% for Terphane Ltda. (6.25% of income tax and 9.0% social contribution on income). The current incentives expired at the end of 2014. The Company anticipates that it will qualify for additional incentives that will extend beyond 2014, but future benefits will not be recorded until the amount and extent of these incentives are more fully known. The benefit from the tax incentives was $51,000 (0 cents per share), $2.5 million (8 cents per share) and $4.3 million (13 cents per share) in 2014, 2013 and 2012, respectively.
	Deferred tax liabilities and deferred tax assets at December 31, 2014 and 2013, are as follows:
	(In Thousands)	2014				2013
	Deferred tax liabilities:
	Amortization of goodwill and other intangibles	$	45,696			$	46,738
	Depreciation	27,550				29,994
	Foreign currency translation gain adjustment	4,233				8,620
	Derivative financial instruments	316				432
	Total deferred tax liabilities	77,795				85,784
	Deferred tax assets:
	Pensions	34,214				14,813
	Employee benefits	11,597				11,124
	Inventory	6,221				2,292
	Excess capital losses and book/tax basis differences on investments	3,282				4,316
	Tax benefit on state and foreign NOL and credit carryforwards	2,967				1,871
	Asset write-offs, divestitures and environmental accruals	1,593				3,734
	Timing adjustment for unrecognized tax benefits on uncertain tax positions, including portion relating to interest and penalties	842				600
	Allowance for doubtful accounts	479				639
	Other	799				1,247
	Deferred tax assets before valuation allowance	61,994				40,636
	Less: Valuation allowance	14,577				20,019
	Total deferred tax assets	47,417				20,617
	Net deferred tax liability	$	30,378			$	65,167
	Included in the balance sheet:
	Noncurrent deferred tax liabilities in excess of assets	$	39,255			$	70,795
	Current deferred tax assets in excess of liabilities	8,877				5,628
	Net deferred tax liability	$	30,378			$	65,167
Except as noted below, the Company believes that it is more likely than not that future taxable income will exceed future tax deductible amounts thereby resulting in the realization of deferred tax assets. The Company has estimated gross state and foreign tax credits and net operating loss carryforwards of $3.0 million at December 31, 2014, which primarily expire at different points over the next 5 to 8 years. A valuation allowance of $2.8 million at December 31, 2014 and $1.7 million at December 31, 2013, respectively, is recorded against the tax benefit on state and foreign tax credits and net operating loss carryforwards generated by certain foreign and domestic subsidiaries that may not be recoverable in the carryforward period. The valuation allowance for excess capital losses from investments and other related items was decreased from $16.4 million at December 31, 2013 to $11.4 million at December 31, 2014 due to changes in the relative amounts of capital gains and losses generated during the year. The amount of the deferred tax asset considered realizable, however, could be adjusted in the near term if estimates of the fair value of certain investments during the carryforward period change. Tredegar continues to evaluate opportunities to utilize capital loss carryforwards prior to their expiration at various dates in the future. As circumstances and events warrant, allowances will be reversed when it is more likely than not that future taxable income will exceed deductible amounts, thereby resulting in the realization of deferred tax assets. The valuation allowance for asset impairments in foreign jurisdictions where the Company believes it is more likely than not that the deferred tax asset will not be realized was $0.4 million at December 31, 2014 and $1.9 million at December 31, 2013.
A reconciliation of the Company’s unrecognized uncertain tax positions since January 1, 2012, is shown below:
		Years Ended December 31,
(In Thousands)		2014				2013			2012
Balance at beginning of period		$	2,239			$	910		$	1,025
Increase (decrease) due to tax positions taken in:
Current period		619				643			432
Prior period		397				686			(21		)
Increase (decrease) due to settlements with taxing authorities		—				—			(398		)
Reductions due to lapse of statute of limitations		—				—			(128		)
Balance at end of period		$	3,255			$	2,239		$	910
Additional information related to unrecognized uncertain tax positions since January 1, 2012 is summarized below:
		Years Ended December 31,
(In Thousands)		2014				2013			2012
Gross unrecognized tax benefits on uncertain tax positions (reflected in current income tax and other noncurrent liability accounts in the balance sheet)		$	3,255			$	2,239		$	910
Deferred income tax assets related to unrecognized tax benefits on uncertain tax positions (reflected in deferred income tax accounts in the balance sheet)		(726		)		(540		)	(212		)
Net unrecognized tax benefits on uncertain tax positions, which would impact the effective tax rate if recognized		2,529				1,699			698
Interest and penalties accrued on deductions taken relating to uncertain tax positions (approximately $150, $100 and $(300) reflected in income tax expense in the income statement in 2014, 2013 and 2012, respectively, with the balance shown in current income tax and other noncurrent liability accounts in the balance sheet)		310				156			60
Related deferred income tax assets recognized on interest and penalties		(116		)		(60		)	(23		)
Interest and penalties accrued on uncertain tax positions net of related deferred income tax benefits, which would impact the effective tax rate if recognized		194				96			37
Total net unrecognized tax benefits on uncertain tax positions reflected in the balance sheet, which would impact the effective tax rate if recognized		$	2,723			$	1,795		$	735
Tredegar, or one of its subsidiaries, files income tax returns in the U.S. federal jurisdiction, various states and jurisdictions outside the U.S. With few exceptions, Tredegar is no longer subject to U.S. federal, state or non-U.S. income tax examinations by tax authorities for years before 2011. The Company anticipates that it is reasonably possible a state income tax audit may settle within the next 12 months, which could result in the recognition of up to approximately $1.4 million of the balance of unrecognized state tax positions.

Losses_Associated_With_Plant_S

Losses Associated With Plant Shutdowns, Asset Impairments And Restructurings, Unusual Items, Gains From Sale Of Assets And Other Items	12 Months Ended
	Dec. 31, 2014
Restructuring and Related Activities [Abstract]
Losses Associated With Plant Shutdowns, Asset Impairments And Restructurings, Unusual Items, Gains From Sale Of Assets And Other Items	LOSSES ASSOCIATED WITH PLANT SHUTDOWNS, ASSET IMPAIRMENTS AND RESTRUCTURINGS, UNUSUAL ITEMS, GAINS FROM SALE OF ASSETS AND OTHER ITEMS
	Losses associated with plant shutdowns, asset impairments, restructurings and other charges for continuing operations in 2014 (as shown in the segment operating profit table in Note 5) totaled $13.8 million ($9.3 million after taxes), and unless otherwise noted below, are also included in “Asset impairments and costs associated with exit and disposal activities” in the consolidated statements of income. Results in 2014 included:
	•	A second quarter charge of $10.0 million ($6.8 million after taxes) associated with a one-time, lump sum license payment to the 3M Company (“3M”) after the Company settled all litigation issues associated with a patent infringement complaint (included in “Other income (expense), net” in the consolidated statements of income; see Note 19 for additional detail on this legal matter);
	•	A fourth quarter charge of $0.5 million ($0.3 million after taxes), a third quarter charge of $0.4 million ($0.2 million after taxes), a second quarter charge of $0.6 million ($0.4 million after taxes) and a first quarter charge of $0.8 million ($0.5 million after taxes) in Film Products and a third quarter charge of $31,000 ($18,000 after taxes) in Aluminum Extrusions associated with severance and other employee-related costs associated with restructurings;
	•	A fourth quarter charge of $0.7 million ($0.4 million after taxes), a third quarter charge of $75,000 ($46,000 after taxes) and a second quarter charge of $0.2 million ($0.1 million after taxes) related to expected future environmental costs at the aluminum extrusions manufacturing facility in Newnan, Georgia (included in “Cost of goods sold” in the consolidated statements of income);
	•	A fourth quarter adjustment of previously accrued severance and other employee-related costs of $0.1 million ($63,000 after taxes) and a third quarter charge of $37,000 ($23,000 after taxes), a second quarter charge of $0.3 million ($0.2 million after taxes) and a first quarter charge of $0.5 million ($0.3 million after taxes) associated with the shutdown of the film products manufacturing facility in Red Springs, North Carolina, which includes net severance and other employee-related costs of $0.4 million and asset impairment and other shutdown-related charges of $0.3 million;
	•	A fourth quarter gain of $0.1 million ($73,000 after taxes) related to the sale of a previously shutdown film products manufacturing facility in LaGrange, Georgia (included in “Other income (expense), net” in the consolidated statements of income); and
	•	A fourth quarter charge of $11,000 ($7,000 after taxes), a third quarter charge of $20,000 ($12,000 after taxes) and a second quarter charge of $24,000 ($15,000 after taxes) associated with the shutdown of the aluminum extrusions manufacturing facility in Kentland, Indiana.
	Results in 2014 include a net unrealized gain on the Company’s investment in kaléo (included in “Other income (expense), net” in the consolidated statements of income) of $2.0 million ($1.0 million after taxes). An unrealized loss on the Company’s investment in the Harbinger Fund (included in “Other income (expense), net” in the consolidated statements of income and “Corporate expenses, net” in the statement of net sales and operating profit by segment) of $0.8 million ($0.4 million after taxes) was recorded in 2014 as a result of a reduction in the fair value of the investment that is not expected to be temporary. Tredegar also realized a gain (included in “Other income (expense), net” in the consolidated statements of income) of $1.2 million ($0.8 million after taxes) on a sale of a portion of this investment property in 2014. See Note 4 for additional information on investments.
	Losses associated with plant shutdowns, asset impairments, restructurings and other charges for continuing operations in 2013 (as shown in the segment operating profit table in Note 5) totaled $3.4 million ($2.2 million after taxes), and unless otherwise noted below, are also included in “Asset impairments and costs associated with exit and disposal activities” in the consolidated statements of income. Results in 2013 included:
	•	A fourth quarter charge of $1.5 million ($0.9 million after taxes), a third quarter charge of $0.1 million ($62,000 after taxes) and a second quarter charge of $85,000 ($53,000 after taxes) related to expected future environmental costs at the aluminum extrusions manufacturing facility in Newnan, Georgia (included in “Cost of goods sold” in the consolidated statements of income);
	•	A third quarter charge of $45,000 ($28,000 after taxes), a second quarter charge of $0.4 million ($0.2 million after taxes) and a first quarter charge of $0.2 million ($94,000 after taxes) associated with the shutdown of the aluminum extrusions manufacturing facility in Kentland, Indiana;
	•	A fourth quarter charge of $0.3 million ($0.2 million after taxes) and a third quarter charge of $0.2 million ($83,000 after taxes) associated with the shutdown of the film products manufacturing facility in Red Springs, North Carolina, which includes severance and other employee related costs of $0.3 million and asset impairments of $0.2 million;
	•	A fourth quarter charge of $0.3 million ($0.2 million after taxes) in Aluminum Extrusions and a first quarter charge of $0.1 million ($67,000 after taxes) in Film Products associated with severance and other employee related costs in connection with restructurings;
	•	A second quarter charge of $90,000 ($54,000 after taxes) and a first quarter charge of $0.1 million ($63,000 after taxes) for integration-related expenses and other non-recurring transactions (included in “Selling, general and administrative expenses” in the consolidated statements of income) associated with the acquisition of AACOA by Aluminum Extrusions; and
	•	A second quarter loss of $91,000 ($91,000 after taxes) related to the sale of previously impaired machinery and equipment at the film products manufacturing facility in Shanghai, China (included in “Other income (expense), net” in the consolidated statements of income).
	Results in 2013 include an unrealized gain on the Company’s investment in kaléo (included in “Other income (expense), net” in the consolidated statements of income) of $3.4 million ($2.2 million after taxes). An unrealized loss on the Company’s investment in the Harbinger Fund (included in “Other income (expense), net” in the consolidated statements of income and “Corporate expenses, net” in the statement of net sales and operating profit by segment) of $0.4 million ($0.3 million after taxes) was recorded in 2013 as a result of a reduction in the fair value of the investment that is not expected to be temporary. Tredegar also recorded an unrealized loss on its investment property in Alleghany and Bath County, Virginia of $1.0 million ($0.6 million after taxes) in the second quarter of 2013 as a result of a reduction in the estimated fair value of the Company’s investment that was not expected to be temporary. See Note 4 for additional information on investments.
	Film Products closed its manufacturing facility in Red Springs, North Carolina in June 2014. The plant, which was a leased facility, was solely dedicated to producing babycare elastic laminate films for P&G, who has consolidated its North American suppliers for this product. The Red Springs manufacturing facility employed 66 people, and total charges incurred related to the shutdown, which primarily consisted of severance and other employee-related costs, were approximately $0.7 million in 2014 and $0.5 million in 2013.
	Losses associated with plant shutdowns, asset impairments, restructurings and other charges for continuing operations in 2012 (as shown in the segment operating profit table in Note 5) totaled $5.5 million ($3.6 million after taxes), and unless otherwise noted below, are also included in “Asset impairments and costs associated with exit and disposal activities” in the consolidated statements of income. Results in 2012 included:
	•	A fourth quarter charge of $0.9 million ($0.5 million after taxes), a third quarter charge of $0.8 million ($0.5 million after taxes), a second quarter charge of $1.0 million ($0.7 million after taxes) and a first quarter charge of $0.9 million ($0.5 million after taxes) associated with the shutdown of the aluminum extrusions manufacturing facility in Kentland, Indiana, which includes accelerated depreciation for property, plant and equipment of $2.4 million (included in “Cost of goods sold” in the consolidated statements of income), severance and other employee related expenses of $1.2 million and other shutdown-related charges of $2.3 million, partially offset by adjustments to inventories accounted for under the LIFO method of $1.5 million (included in “Cost of goods sold” in the consolidated statements of income) and gains on the sale of equipment of $0.8 million (included in “Other income (expense), net” in the consolidated statements of income);
	•	A fourth quarter gain of $1.3 million ($0.7 million after taxes) in Film Products (included in “Other income (expense), net” in the consolidated statements of income) associated with an insurance recovery on idle equipment that was destroyed in a fire at an outside warehouse;
	•	A fourth quarter charge of $0.9 million ($0.6 million after taxes) and a third quarter charge of $0.3 million ($0.2 million after taxes) for acquisition-related expenses (included in “Selling, general and administrative expenses” in the consolidated statements of income) associated with the acquisition of AACOA by Aluminum Extrusions (see discussion below for further detail);
	•	A fourth quarter charge of $0.1 million ($0.1 million after taxes), a third quarter charge of $0.1 million ($0.1 million after taxes), a second quarter charge of $0.6 million ($0.4 million after taxes) and a first quarter charge of $0.3 million ($0.2 million after taxes) for integration-related expenses (included in “Selling, general and administrative expenses” in the consolidated statements of income) associated with the Film Products acquisition of Terphane;
	•	A fourth quarter gain of $1.1 million ($0.6 million after taxes) related to the sale of assets associated with a previously shutdown film products manufacturing facility in LaGrange, Georgia;
	•	A second quarter charge of $0.8 million ($0.5 million after taxes) for asset impairments associated with a previously shutdown film products manufacturing facility in LaGrange, Georgia;
	•	A fourth quarter charge of $0.2 million ($0.1 million after taxes) and a second quarter charge of $0.1 million ($46,000 after taxes) in Film Products and a first quarter charge of $0.2 million ($0.1 million after taxes) in Aluminum Extrusions for severance and other employee-related costs in connection with restructurings;
	•	A fourth quarter charge of $0.2 million ($0.2 million after taxes) for asset impairments in Film Products;
	•	A fourth quarter charge of $0.2 million ($0.1 million after taxes) for integration-related expenses (included in “Selling, general and administrative expenses” in the consolidated statements of income) associated with the Aluminum Extrusions’ acquisition of AACOA;
	•	A fourth quarter charge of $0.1 million ($0.1 million after taxes) associated with purchase accounting adjustments made to the value of inventory sold by Aluminum Extrusions after its acquisition of AACOA (included in “Cost of goods sold” in the consolidated statements of income); and
	•	A fourth quarter charge of $0.1 million ($49,000 after taxes) related to expected future environmental costs at the aluminum extrusions manufacturing facility in Newnan, Georgia (included in “Cost of goods sold” in the consolidated statements of income).
	Total acquisition-related expenses (included in “Selling, general and administrative expenses” in the consolidated statements of income) associated with the acquisition of AACOA by Aluminum Extrusions were $2.0 million in 2012. Acquisition-related expenses of $0.8 million were recorded to “Corporate expenses, net” in the statement of net sales and operating profit by segment in Note 5 during the first and second quarters of 2012, and as noted above, acquisitions-related expenses of $1.2 million were recorded to “Losses associated with plant shutdowns, asset impairments, restructurings and other charges” for Aluminum Extrusions in the statement of net sales and operating profit by segment in Note 5 during the third and fourth quarters of 2012.
	Results in 2012 include an unrealized gain from the Company’s investment in kaléo of $16.1 million ($10.2 million after taxes), which is accounted for under the fair value method. An unrealized loss on the Company’s investment in the Harbinger Fund of $1.1 million ($0.7 million after taxes) was recorded in 2012 as a result of a reduction in the fair value of the investment that is not expected to be temporary. See Note 4 for additional information on investments.
	Aluminum Extrusions closed its manufacturing facility in Kentland, Indiana in August 2012. The plant, whose core market was residential construction, previously employed 146 people. Charges incurred related to the shutdown were approximately $4.5 million, and included accelerated depreciation on property, plant and equipment of approximately $2.4 million, severance and other employee-related charges of approximately $1.2 million and other shutdown-related costs of approximately $1 million. Other shutdown-related costs are primarily comprised of equipment transfers and plant shutdown charges, partially offset by adjustment for inventories accounted for under the LIFO method. Most of these shutdown charges, which include cash expenditures of approximately $3.5 million, were recognized over a period of 18 months.
	Impairment charges were recognized to write down the machinery and equipment to the lower of their carrying value or estimated fair value. The estimated fair value of machinery and equipment that was evaluated for impairment was primarily based on estimates of the proceeds that the Company would receive if and/or when assets are sold. Estimates of the remaining fair value for the related machinery and equipment were based on both Level 2 and 3 inputs as defined under U.S. GAAP.

Contingencies

Contingencies	12 Months Ended
	Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]
Contingencies	CONTINGENCIES
	Tredegar is involved in various stages of investigation and remediation relating to environmental matters at certain current and former plant locations. Where the Company has determined the nature and scope of any required environmental remediation activity, estimates of cleanup costs have been obtained and accrued. As efforts continue to maintain compliance with applicable environmental laws and regulations, additional contingencies may be identified. If additional contingencies are identified, the Company’s practice is to determine the nature and scope of those contingencies, obtain and accrue estimates of the cost of remediation, and perform remediation. The Company does not believe that additional costs that could arise from those activities will have a material adverse effect on its financial position. However, those costs could have a material adverse effect on quarterly or annual operating results at that time.
	The Company is involved in various other legal actions arising in the normal course of business. After taking into consideration the relevant information, the Company believes that it has sufficiently accrued for probable losses and that the actions will not have a material adverse effect on its financial position. However, the resolution of the actions in a future period could have a material adverse effect on quarterly or annual operating results at that time.
	From time to time, the Company enters into transactions with third parties in connection with the sale of assets or businesses in which it agrees to indemnify the buyers or third parties involved in the transaction, or in which the sellers or third parties involved in the transaction agree to indemnify Tredegar, for certain liabilities or risks related to the assets or business. Also, in the ordinary course of its business, the Company may enter into agreements with third parties for the sale of goods or services that may contain indemnification provisions. In the event that an indemnification claim is asserted, liability for indemnification would be subject to an assessment of the underlying facts and circumstances under the terms of the applicable agreement. Further, any indemnification payments may be limited or barred by a monetary cap, a time limitation, or a deductible or basket. For these reasons, Tredegar is unable to estimate the maximum amount of the potential future liability under the indemnity provisions of these agreements. The Company does, however, accrue for losses for any known contingent liability, including those that may arise from indemnification provisions, when future payment is probable and the amount is reasonably estimable. The Company discloses contingent liabilities if the probability of loss is reasonably possible and material.
	In November 2009, 3M filed a patent infringement complaint in the U.S. District Court for the District of Minnesota (“Minnesota District Court”) against the Company's film products business. The complaint alleged infringement upon elastic film technology patents held by 3M and sought unspecified compensatory and enhanced damages associated with sales of certain elastic film product lines, which include Film Products’ FabriFlex™ and FlexFeel™ family of products.
	The Company and 3M settled all pending matters between the parties related to the patent infringement lawsuits filed by 3M. While the Company is confident in its position on the issues, because of the inherent risks associated with litigating patent lawsuits and the significant legal expenses expected to be incurred, the Company, without any admission of wrongdoing or fault of any kind, entered into a non-exclusive worldwide license agreement with 3M on June 26, 2014 for certain elastic film products, and on June 30, 2014, made a one-time, lump-sum payment of $10 million to 3M.
	In 2011, Tredegar was notified by U.S. Customs and Border Protection (“U.S. Customs”) that certain film products exported by Terphane to the U.S. since November 6, 2008 could be subject to duties associated with an anti-dumping duty order on imported PET films from Brazil.  The Company contested the applicability of these anti-dumping duties to the films exported by Terphane, and a request was filed with the U.S. Department of Commerce (“Commerce”) for clarification about whether the film products at issue are within the scope of the anti-dumping duty order.  On January 8, 2013, Commerce issued a scope ruling confirming that the films are not subject to the order, provided that Terphane can establish to the satisfaction of U.S. Customs that the performance enhancing layer on those films is greater than 0.00001 inches thick.  The films at issue are manufactured to specifications that exceed that threshold.  On February 6, 2013, certain U.S. producers of PET film filed a summons with the U.S. Court of International Trade to appeal the scope ruling from Commerce.  If U.S. Customs ultimately were to require the collection of anti-dumping duties because Commerce’s scope ruling was overturned on appeal, or otherwise, indemnifications for related liabilities are specifically provided for under the Purchase Agreement. In December 2014, the U.S. International Trade Commission voted to revoke the anti-dumping duty order on imported PET films from Brazil. The revocation, as a result of the vote by the International Trade Commission, was effective as of November 2013. On February 20, 2015, certain U.S. producers of PET Film filed a summons with the U.S. Court of International Trade to appeal the determination by the U.S. International Trade Commission.

Selected_Quarterly_Financial_D

Selected Quarterly Financial Data	12 Months Ended
	Dec. 31, 2014
Quarterly Financial Information Disclosure [Abstract]
Selected Quarterly Financial Data	SELECTED QUARTERLY FINANCIAL DATA
	Tredegar Corporation and Subsidiaries
	(In Thousands, Except Per-Share Amounts)
	(Unaudited)
		First			Second			Third			Fourth
		Quarter			Quarter			Quarter			Quarter
	For the year ended December 31, 2014
	Sales	$	235,213		$	236,965		$	240,429		$	239,219
	Gross profit	37,749			38,480			34,582			34,109
	Income from continuing operations	8,479			3,752			10,745			13,054
	Income (loss) from discontinued operations	—			—			850			—
	Net income	$	8,479		$	3,752		$	11,595		$	13,054
	Earnings (loss) per share:
	Basic
	Continuing operations	$	0.26		$	0.12		$	0.33		$	0.4
	Discontinued operations	—			—			0.03			—
	Net income	$	0.26		$	0.12		$	0.36		$	0.4
	Diluted
	Continuing operations	$	0.26		$	0.11		$	0.33		$	0.4
	Discontinued operations	—			—			0.03			—
	Net income	$	0.26		$	0.11		$	0.36		$	0.4
	Shares used to compute earnings (loss) per share:
	Basic	32,242			32,312			32,319			32,335
	Diluted	32,621			32,641			32,507			32,449
	For the year ended December 31, 2013
	Sales	$	241,526		$	243,530		$	243,194		$	231,096
	Gross profit	36,836			37,540			37,253			34,417
	Income from continuing operations	9,517			9,590			7,428			9,402
	Income (loss) from discontinued operations	(5,240		)	(8,300		)	(450		)	—
	Net income (loss)	$	4,277		$	1,290		$	6,978		$	9,402
	Earnings (loss) per share:
	Basic
	Continuing operations	$	0.3		$	0.3		$	0.23		$	0.29
	Discontinued operations	(0.16		)	(0.26		)	(0.01		)	—
	Net income (loss)	$	0.14		$	0.04		$	0.22		$	0.29
	Diluted
	Continuing operations	$	0.29		$	0.29		$	0.23		$	0.29
	Discontinued operations	(0.16		)	(0.25		)	(0.02		)	—
	Net income (loss)	$	0.13		$	0.04		$	0.21		$	0.29
	Shares used to compute earnings (loss) per share:
	Basic	32,076			32,187			32,201			32,222
	Diluted	32,480			32,635			32,658			32,622
	Net income (loss) from continuing operations in the fourth quarter of 2014 includes the reduction in income taxes from continuing operations in 2014 in comparison to the prior year as a result of a pair of distinct tax adjustments. Income taxes in the fourth quarter of 2014 included the recognition of a tax benefit for a portion of the Company’s capital loss carryforwards of $4.8 million. These capital loss carryforwards were previously offset by a valuation allowance associated with expected limitations on the utilization of these assumed capital losses. In addition, as previously discussed in Note 1, with the exception of Terphane Ltda., the Company accrues U.S. federal income taxes to the extent required under U.S. GAAP on unremitted earnings from foreign operations. As a result of changes in the underlying basis of certain foreign subsidiaries, income taxes from continuing operations in 2014 included an adjustment of $2.2 million in the fourth quarter, $1.7 million of which is a correction to prior years, to reverse previously accrued deferred tax liabilities accumulated over several years arising from changes in tax basis due to foreign currency translation adjustments and unremitted earnings. The corresponding prior period changes in the underlying basis of certain foreign subsidiaries primarily occurred before 2010, and the prior period components are not considered material to any period presented.

Summary_Of_Significant_Account1

Summary Of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2014
Accounting Policies [Abstract]
Basis Of Presentation	Basis of Presentation. The consolidated financial statements include the accounts and operations of Tredegar and all of its majority-owned subsidiaries. Intercompany accounts and transactions have been eliminated in consolidation. On February 12, 2008, Tredegar sold its aluminum extrusions business in Canada, and on November 20, 2012, the Company sold its mitigation banking business, Falling Springs, LLC (“Falling Springs”). All historical results for these businesses have been reflected as discontinued operations in these financial statements; however, cash flows for discontinued operations have not been separately disclosed in the consolidated statements of cash flows. See Note 3 regarding discontinued operations.
	The preparation of financial statements in conformity with United States (“U.S.”) generally accepted accounting principles (“U.S. GAAP”) requires Tredegar to make estimates and assumptions that affect the reported amounts of revenues, expenses, assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements. Actual results could differ from those estimates.
Foreign Currency Translation	Foreign Currency Translation. The financial statements of subsidiaries located outside the U.S., where the local currency is the functional currency, are translated into U.S. Dollars using exchange rates in effect at the period end for assets and liabilities and average exchange rates during each reporting period for results of operations. Adjustments resulting from the translation of these financial statements are reflected as a separate component of shareholders’ equity. There are no operating subsidiaries located outside the U.S. where the U.S. Dollar is the functional currency.
	Transaction and remeasurement gains or losses included in income were a loss of $1.5 million in 2014, a loss of $0.4 million in 2013 and a gain of $16,000 in 2012. These amounts do not include the effects between reporting periods that exchange rate changes have on income of the locations outside the U.S. that result from translation into U.S. Dollars.
Cash And Cash Equivalents	Cash and Cash Equivalents. Cash and cash equivalents consist of cash on hand in excess of daily operating requirements and highly liquid investments with original maturities of three months or less. At December 31, 2014 and 2013, Tredegar had cash and cash equivalents of $50.1 million and $52.6 million, respectively, including funds held in locations outside the U.S. of $40.5 million and $38.6 million, respectively.
	The Company’s policy permits investment of excess cash in marketable securities that have the highest credit ratings and maturities of less than one year. The primary objectives of the policy are safety of principal and liquidity.
Accounts And Other Receivables	Accounts and Other Receivables. Accounts receivable are stated at the amount invoiced to customers less allowances for doubtful accounts and sales returns. Accounts receivable are non-interest bearing and arise from the sale of product to customers under typical industry trade terms. Notes receivable are not significant. Past due amounts are determined based on established terms and charged-off when deemed uncollectible. The allowance for doubtful accounts is determined based on an assessment of probable losses taking into account past due amounts, customer credit profile, historical experience and current economic conditions. Other receivables include value-added taxes related to certain foreign subsidiaries and other miscellaneous receivables due within one year.
Inventories	Inventories. Inventories are stated at the lower of cost or market, with cost determined on the last-in, first-out (“LIFO”) basis, the weighted average cost or the first-in, first-out basis. Cost elements included in work-in-process and finished goods inventories are raw materials, direct labor and manufacturing overhead.
Property, Plant And Equipment	Property, Plant and Equipment. Accounts include costs of assets constructed or purchased, related delivery and installation costs and interest incurred on significant capital projects during their construction periods. Expenditures for renewals and betterments also are capitalized, but expenditures for repairs and maintenance are expensed as incurred. The cost and accumulated depreciation applicable to assets retired or sold are removed from the respective accounts, and gains or losses thereon are included in income.
	Capital expenditures for property, plant and equipment include capitalized interest. Capitalized interest included in capital expenditures for property, plant and equipment was $1.1 million, $0.9 million and $0.2 million in 2014, 2013 and 2012, respectively.
	Depreciation is computed primarily by the straight-line method based on the estimated useful lives of the assets that, except for isolated exceptions, range from 5 to 40 years for buildings and land improvements and 2 to 20 years for machinery and equipment.
Investments In Private Entities With Less Than Or Equal To 50% Voting Ownership Interest	Investments in Private Entities with Less Than or Equal to 50% Voting Ownership Interest. The Company accounts for its investments in private entities where its voting ownership is less than or equal to 50% based on the facts and circumstances surrounding the investment. Investments are required to be accounted for under the consolidation method in situations where Tredegar is the primary beneficiary of a variable interest entity. The primary beneficiary is the party that has a controlling financial interest in a variable interest entity. The Company is deemed to have a controlling financial interest if it has (i) the power to direct activities of the variable interest entity that most significantly impact its economic performance and (ii) the obligation to absorb losses or the right to receive benefits from the variable interest entity that could potentially be significant to its operations.
	If the Company is not deemed to be the primary beneficiary in an investment in a variable interest entity then it selects either: (i) the fair value method or (ii) either (a) the cost method if it does not have significant influence over operating and financial policies of the investee or (b) the equity method if it does have significant influence.
	For those investments measured at fair value, U.S. GAAP requires disclosure of the level within the fair value hierarchy in which fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets or liabilities (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3).
Goodwill And Other Intangibles	Goodwill and Other Intangibles. The excess of the purchase price over the fair value of identifiable net assets of acquired companies is allocated to goodwill. The Company assesses goodwill for impairment when events or circumstances indicate that the carrying value may not be recoverable, or, at a minimum, on an annual basis (December 1st of each year). The Company’s significant reporting units in Film Products include Polyethylene Films and PET Films. There are two reporting units in Aluminum Extrusions, Bonnell Aluminum and AACOA. Each of these reporting units has separately identifiable operating net assets (operating assets including goodwill and intangible assets net of operating liabilities).
	All goodwill in Aluminum Extrusions is associated with the AACOA reporting unit. A goodwill impairment charge of $30.6 million ($30.6 million after taxes), which represented the entire goodwill balance in the Bonnell Aluminum reporting unit, was recognized in 2009.
	The Company estimates the fair value of its reporting units using discounted cash flow analysis and comparative enterprise value-to-EBITDA (earnings before interest, taxes, depreciation and amortization) multiples. The goodwill of Polyethylene Films reporting unit was tested for impairment at the annual testing date, with the estimated fair value of this reporting unit substantially exceeding the carrying value of its net assets. The goodwill of PET Films reporting unit was also tested for impairment at December 1, 2014, with the estimated fair value of this reporting unit exceeding the carrying value of its net assets by approximately 31%. The goodwill of AACOA is associated with the October 2012 acquisition of AACOA, Inc. (“AACOA”), and estimated fair value of this reporting unit exceeded the carrying value of its net assets by approximately 63% at December 1, 2014.
Impairment Of Long-Lived Assets	Impairment of Long-Lived Assets. The Company reviews long-lived assets for possible impairment when events indicate that an impairment may exist. For assets that are held and used in operations, if events indicate that an asset may be impaired, the Company estimates the future unlevered pre-tax cash flows expected to result from the use of the asset and its eventual disposition. Assets are grouped for this purpose at the lowest level for which there are identifiable and independent cash flows. If the sum of these undiscounted pre-tax cash flows is less than the carrying amount of the asset, an impairment loss is calculated. Measurement of the impairment loss is the amount by which the carrying amount exceeds the estimated fair value of the asset group.
	Assets that are held for sale are reported at the lower of their carrying amount or estimated fair value less cost to sell, with an impairment loss recognized for any write-down required.
Pension Costs And Postretirement Benefit Costs Other Than Pensions	Pension Costs and Postretirement Benefit Costs Other than Pensions. Pension costs and postretirement benefit costs other than pensions are accrued over the period employees provide service to Tredegar. Liabilities and expenses for pension plans and other postretirement benefits are determined using actuarial methodologies and incorporate significant assumptions, including the rate used to discount the future estimated liability, the long-term rate of return on plan assets, and several assumptions relating to the employee workforce. The Company recognizes the funded status of its pension and other postretirement plans in the accompanying consolidated balance sheets. Tredegar’s policy is to fund its pension plans at amounts not less than the minimum requirements of the Employee Retirement Income Security Act (“ERISA”) of 1974 and to fund postretirement benefits other than pensions when claims are incurred.
Revenue Recognition	Revenue Recognition. Revenue from the sale of products, which is shown net of estimated sales returns and allowances, is recognized when title has passed to the customer, the price of the product is fixed and determinable, and collectability is reasonably assured. Amounts billed to customers related to freight have been classified as sales in the accompanying consolidated statements of income. The cost of freight has been classified as a separate line in the accompanying consolidated statements of income. Taxes assessed by a governmental authority that are both imposed on and concurrent with a specific revenue-producing transaction between Tredegar and its customers (such as value-added taxes) are accounted for on a net basis and therefore excluded from revenues.
Research & Development ("R&D") Costs	Research & Development (“R&D”) Costs. R&D costs are expensed as incurred and include primarily salaries, wages, employee benefits, equipment depreciation, facility costs and the cost of materials consumed relating to R&D efforts. R&D costs include a reasonable allocation of indirect costs.
Income Taxes	Income Taxes. Income taxes are recognized during the period in which transactions enter into the determination of income for financial reporting purposes, with deferred income taxes being provided at enacted statutory tax rates on the differences between the financial reporting and tax bases of assets and liabilities (see Note 17). Deferred U.S. federal income taxes have not been recorded for the undistributed earnings for Terphane Ltda. (a subsidiary of Film Products) because of the Company’s intent to permanently reinvest these earnings. Because of the accumulation of significant losses related to foreign currency translations at Terphane Ltda. as of December 31, 2014, there were no unrecorded deferred tax liabilities associated with the U.S. federal income taxes and foreign withholding taxes on undistributed earnings indefinitely invested outside the U.S. The Company accrues U.S. federal income taxes to the extent permitted under U.S. GAAP on unremitted earnings of all other foreign subsidiaries.
	A valuation allowance is recorded in the period when the Company determines that it is more likely than not that all or a portion of deferred tax assets may not be realized. The establishment and removal of a valuation allowance requires the Company to consider all positive and negative evidence and make a judgmental decision regarding the amount of valuation allowance required as of a reporting date. The benefit of an uncertain tax position is included in the accompanying financial statements when the Company determines that it is more likely than not that the position will be sustained, based on the technical merits of the position, if the taxing authority examines the position and the dispute is litigated. This determination is made on the basis of all the facts, circumstances and information available as of the reporting date.
Earnings Per Share	Earnings Per Share. Basic earnings per share is computed using the weighted average number of shares of common stock outstanding. Diluted earnings per share is computed using the weighted average common and potentially dilutive common equivalent shares outstanding, determined as follows:
		2014			2013			2012
	Weighted average shares outstanding used to compute basic earnings per share	32,302,108			32,171,751			32,032,343
	Incremental shares attributable to stock options and restricted stock	251,746			427,528			160,233
	Shares used to compute diluted earnings per share	32,553,854			32,599,279			32,192,576
	Incremental shares attributable to stock options and restricted stock are computed using the average market price during the related period. The average out-of-the-money options to purchase shares that were excluded from the calculation of incremental shares attributable to stock options and restricted stock were 320,849 in 2014, 31,167 in 2013 and 632,050 in 2012.
Stock-Based Employee Compensation Plans	Stock-Based Employee Compensation Plans. Compensation expense is recorded on all share-based awards based upon its calculated fair value over the requisite service period using the graded-vesting method. The fair value of stock option awards was estimated as of the grant date using the Black-Scholes options-pricing model. The fair value of restricted stock awards was estimated as of the grant date using the closing stock price on that date.
	The assumptions used in this model for valuing Tredegar stock options granted in 2014, 2013 and 2012 are as follows:
		2014				2013			2012
	Dividend yield	1.3		%		1.1		%	0.9		%
	Weighted average volatility percentage	43.5		%		48.3		%	48.7		%
	Weighted average risk-free interest rate	2		%		1.1		%	1		%
	Holding period (years):
	Officers	6				6			6
	Management	5				5			5
	Weighted average exercise price at date of grant (also weighted average market price at date of grant):
	Officers	$	22.49			$	24.84		$	19.3
	Management	22.33				25.1			19.4
	The dividend yield is the dividend yield on common stock at the date of grant, which the Company believes is a reasonable estimate of the expected yield during the holding period. The expected volatility is based on the historical volatility of Tredegar’s common stock using a sequential period of historical data equal to the expected holding period of the option. The Company has no reason to believe that future volatility for this period is likely to differ from the past. The assumed risk-free interest rate is based on observed interest rates (zero coupon U.S. Treasury debt securities) appropriate for the expected holding period. The expected holding period and forfeiture assumptions are based on historical experience. Estimated forfeiture assumptions are reviewed through the vesting period. Adjustments are made if actual forfeitures differ from previous estimates. The cumulative effect of a change in estimated forfeitures is recognized in the period of the change.
Financial Instruments	Financial Instruments. Tredegar uses derivative financial instruments for the purpose of hedging aluminum price volatility and currency exchange rate exposures that exist as part of transactions associated with ongoing business operations. The Company’s derivative financial instruments are designated as and qualify as cash flow hedges and are recognized in the accompanying balance sheet at fair value. A change in the fair value of the derivative that is highly effective as and that is designated and qualifies as a cash flow hedge is recorded in other comprehensive income. Gains and losses reported in other comprehensive income (loss) are reclassified to earnings in the periods in which earnings are affected by the variability of cash flows of the hedged transaction. Such gains and losses are reported on the same line as the underlying hedged item, and the cash flows related to financial instruments are classified in the consolidated statements of cash flows in a manner consistent with those of the transactions being hedged. Any hedge ineffectiveness (which represents the amount by which the changes in the fair value of the derivative exceed the variability in the cash flows of the forecasted transaction) is recorded in current period earnings. The amount of gains and losses recognized for hedge ineffectiveness were not material in 2014, 2013 and 2012.
	The Company’s policy requires that it formally document all relationships between hedging instruments and hedged items, as well as its risk management objective and strategy for undertaking various hedge transactions. The Company also formally assesses (both at the hedge’s inception and on an ongoing basis) whether the derivatives that are used in hedging transactions have been highly effective in offsetting changes in the fair value or cash flows of hedged items and whether those derivatives may be expected to remain highly effective in future periods. When it is determined that a derivative is not (or has ceased to be) highly effective as a hedge, the Company discontinues hedge accounting prospectively.
	As a policy, Tredegar does not engage in speculative or leveraged transactions, nor does it hold or issue financial instruments for trading purposes. Additional disclosure of the utilization of derivative hedging instruments is included in Note 9.
Comprehensive Income (Loss)	Comprehensive Income (Loss). Comprehensive income (loss) is defined as net income or loss and other comprehensive income or loss. Other comprehensive income (loss) includes changes in foreign currency translation adjustments, unrealized gains and losses on derivative financial instruments, prior service costs and net gains or losses from pension and other postretirement benefit plans arising during the period and amortization of these prior service costs and net gains or losses adjustments, all recorded net of deferred income taxes.
Recently Issued Accounting Standards	Recently Issued Accounting Standards.

Summary_Of_Significant_Account2

Summary Of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2014
Accounting Policies [Abstract]
Schedule Of Diluted Earnings Per Share Computed Using Weighted Average Common And Potentially Dilutive Common Equivalent Shares Outstanding	Diluted earnings per share is computed using the weighted average common and potentially dilutive common equivalent shares outstanding, determined as follows:
		2014			2013			2012
	Weighted average shares outstanding used to compute basic earnings per share	32,302,108			32,171,751			32,032,343
	Incremental shares attributable to stock options and restricted stock	251,746			427,528			160,233
	Shares used to compute diluted earnings per share	32,553,854			32,599,279			32,192,576
Schedule Of Assumptions For Valuing Stock Options Granted	The assumptions used in this model for valuing Tredegar stock options granted in 2014, 2013 and 2012 are as follows:
		2014				2013			2012
	Dividend yield	1.3		%		1.1		%	0.9		%
	Weighted average volatility percentage	43.5		%		48.3		%	48.7		%
	Weighted average risk-free interest rate	2		%		1.1		%	1		%
	Holding period (years):
	Officers	6				6			6
	Management	5				5			5
	Weighted average exercise price at date of grant (also weighted average market price at date of grant):
	Officers	$	22.49			$	24.84		$	19.3
	Management	22.33				25.1			19.4
Schedule Of Stock Options Granted And Related Estimated Fair Value At Date Of Grant	Tredegar stock options granted during 2014, 2013 and 2012, and related estimated fair value at the date of grant, are as follows:
		2014				2013			2012
	Stock options granted (number of shares):
	Officers	87,820				94,400			99,600
	Management	93,656				90,300			82,500
	Total	181,476				184,700			182,100
	Estimated weighted average fair value of options per share at date of grant:
	Officers	$	9.21			$	10.37		$	8.07
	Management	7.6				9.65			7.31
	Total estimated fair value of stock options granted (in thousands)	$	1,521			$	1,850		$	1,449
Schedule of Accumulated Other Comprehensive Income (Loss)	The following table summarizes the after-tax changes in accumulated other comprehensive income (loss) for the year ended December 31, 2014:
	(In Thousands)	Foreign currency translation adjustment				Gain (loss) on derivative financial instruments			Pension and other post-retirement benefit adjustments			Total
	Beginning balance, January 1, 2014	$	(19,205	)		$	765		$	(71,848	)	$	(90,288	)
	Other comprehensive income (loss) before reclassifications	(28,065		)		294			(38,730		)	(66,501		)
	Amounts reclassified from accumulated other comprehensive income (loss)	—				(403		)	6,997			6,594
	Net other comprehensive income (loss) - current period	(28,065		)		(109		)	(31,733		)	(59,907		)
	Ending balance, December 31, 2014	$	(47,270	)		$	656		$	(103,581	)	$	(150,195	)
	The following table summarizes the after-tax changes in accumulated other comprehensive income (loss) for the year ended December 31, 2013:
	(In Thousands)	Foreign currency translation adjustment				Gain (loss) on derivative financial instruments			Pension and other post-retirement benefit adjustments			Total
	Beginning balance, January 1, 2013	$	131			$	993		$	(103,471	)	$	(102,347	)
	Other comprehensive income (loss) before reclassifications	(19,336		)		(590		)	22,203			2,277
	Amounts reclassified from accumulated other comprehensive income (loss)	—				362			9,420			9,782
	Net other comprehensive income (loss) - current period	(19,336		)		(228		)	31,623			12,059
	Ending balance, December 31, 2013	$	(19,205	)		$	765		$	(71,848	)	$	(90,288	)
Reclassification out of Accumulated Other Comprehensive Income	Reclassifications of balances out of accumulated other comprehensive income (loss) into net income during 2014 are summarized as follows:
	(In Thousands)	Amount reclassified from other comprehensive income				Location of gain (loss) reclassified from accumulated other comprehensive income to net income
	Gain (loss) on derivative financial instruments:
	Aluminum future contracts, before taxes	$	631			Cost of sales
	Foreign currency forward contracts, before taxes	16				Cost of sales
	Total, before taxes	647
	Income tax expense (benefit)	244				Income taxes
	Total, net of tax	$	403
	Amortization of pension and other post-retirement benefits:
	Actuarial gain (loss) and prior service costs, before taxes	$	(10,579	)		(a)
	Income tax expense (benefit)	(3,582		)		Income taxes
	Total, net of tax	$	(6,997	)
	(a) This component of accumulated other comprehensive income is included in the computation of net periodic pension cost (see Note 14 for additional detail).
	Reclassifications of balances out of accumulated other comprehensive income (loss) into net income during 2013 are summarized as follows:
	(In Thousands)	Amount reclassified from other comprehensive income				Location of gain (loss) reclassified from accumulated other comprehensive income to net income
	Gain (loss) on derivative financial instruments:
	Aluminum future contracts, before taxes	$	(583	)		Cost of sales
	Foreign currency forward contracts, before taxes	—
	Total, before taxes	(583		)
	Income tax expense (benefit)	(221		)		Income taxes
	Total, net of tax	$	(362	)
	Amortization of pension and other post-retirement benefits:
	Actuarial gain (loss) and prior service costs, before taxes	$	(14,818	)		(a)
	Income tax expense (benefit)	(5,398		)		Income taxes
	Total, net of tax	$	(9,420	)
	(a) This component of accumulated other comprehensive income is included in the computation of net periodic pension cost (see Note 14 for additional detail).

Acquisitions_Tables

Acquisitions (Tables)	12 Months Ended
	Dec. 31, 2014
Business Acquisition [Line Items]
Schedule Of Supplemental Pro Forma Results	Supplemental unaudited pro forma results for the year ended December 31, 2012 are as follows:
	(In Thousands, Except Per Share Data)		2012
	Sales		$	946,594
	Income from continuing operations		44,816
	Earnings per share from continuing operations:
	Basic		$	1.4
	Diluted		1.39
AACOA
Business Acquisition [Line Items]
Schedule Of Preliminary Estimated Purchase Price Allocation	Based upon management’s valuation of the fair value of tangible and intangible assets acquired (net of cash acquired) and liabilities assumed, the purchase price allocation was as follows:
	(In Thousands)
	Accounts receivable	$	12,477
	Inventories	4,708
	Property, plant & equipment	15,116
	Identifiable intangible assets:
	Customer relationships	4,800
	Trade names	4,800
	Proprietary technology	3,400
	Noncompete agreements	1,600
	Other assets (current & noncurrent)	42
	Trade payables & accrued expenses	(6,574		)
	Total identifiable net assets	40,369
	Purchase price, net of cash received	54,065
	Goodwill	$	13,696
Schedule Of Amortized Periods For Acquired Intangible Assets	The goodwill and other intangible asset balances associated with this acquisition will be deductible for tax purposes. Intangible assets acquired in the purchase of AACOA are being amortized over the following periods:
	Identifiable Intangible Asset	Useful Life (Yrs)
	Customer relationships	10
	Proprietary technology	10-Jun
	Trade names	Indefinite
	Noncompete agreements	2
Terphane
Business Acquisition [Line Items]
Schedule Of Preliminary Estimated Purchase Price Allocation
Schedule Of Amortized Periods For Acquired Intangible Assets

Investments_Tables

Investments (Tables)	12 Months Ended
	Dec. 31, 2014
Equity Method Investments and Joint Ventures [Abstract]
Schedule Of Fair Value Method Investments, Balance Sheets And Income Statements	The condensed balance sheets for kaléo at December 31, 2014 and 2013 and related condensed statements of operations for the last three years ended December 31, 2014, that were reported by kaléo, are provided below:
			December 31,							December 31,
	(In Thousands)		2014			2013				2014			2013
	Assets:								Liabilities & Equity:
	Cash & short-term investments		$	117,589		$	33,560		Long-term debt, net of discount, current portion	$	—		$	5,414
	Restricted cash		14,498			—			Other current liabilities	8,123			4,845
	Other current assets		17,916			5,682			Other noncurrent liabilities	1,247			3,098
	Property & equipment		10,824			10,559			Long-term debt, net of discount	149,471			9,372
	Patents		2,702			2,433			Redeemable preferred stock	22,946			21,970
	Other long-term assets		2,857			445			Equity	(15,401		)	7,980
	Total assets		$	166,386		$	52,679		Total liabilities & equity	$	166,386		$	52,679
		2014			2013			2012
	Revenues & Expenses:
	Revenues	$	21,156		$	15,305		$	38,179
	Cost of goods sold	(3,801		)	—			—
	Expenses and other, net (a)	(48,447		)	(18,631		)	(13,073		)
	Income tax (expense) benefit	8,100			1,586			(9,642		)
	Net income (loss)	$	(22,992	)	$	(1,740	)	$	15,464

Business_Segments_Tables

Business Segments (Tables)	12 Months Ended
	Dec. 31, 2014
Segment Reporting [Abstract]
Schedule Of Segment Reporting Information By Segment
	Net Sales
	(In Thousands)	2014			2013			2012
	Film Products	$	578,687		$	621,239		$	611,877
	Aluminum Extrusions	344,346			309,482			245,465
	Total net sales	923,033			930,721			857,342
	Add back freight	28,793			28,625			24,846
	Sales as shown in consolidated statements of income	$	951,826		$	959,346		$	882,188
	Operating Profit
	(In Thousands)	2014			2013			2012
	Film Products:
	Ongoing operations	$	58,054		$	70,966		$	69,950
	Plant shutdowns, asset impairments, restructurings and other (a)	(12,827		)	(671		)	(109		)
	Aluminum Extrusions:
	Ongoing operations	25,664			18,291			9,037
	Plant shutdowns, asset impairments, restructurings and other (a)	(976		)	(2,748		)	(5,427		)
	Total	69,915			85,838			73,451
	Interest income	588			594			418
	Interest expense	2,713			2,870			3,590
	Gain on investment accounted for under the fair value method (a)	2,000			3,400			16,100
	Gain on sale of investment property (a)	1,208			—			—
	Unrealized loss on investment property (a)	—			1,018			—
	Stock option-based compensation expense	1,272			1,155			1,432
	Corporate expenses, net (a)	24,310			31,857			23,443
	Income from continuing operations before income taxes	45,416			52,932			61,504
	Income taxes (a)	9,387			16,995			18,319
	Income from continuing operations	36,029			35,937			43,185
	Income (loss) from discontinued operations (a)	850			(13,990		)	(14,934		)
	Net income	$	36,879		$	21,947		$	28,251
Schedule Of Identifiable Assets
	Identifiable Assets
	(In Thousands)	2014			2013
	Film Products	$	546,210		$	556,873
	Aluminum Extrusions	143,328			134,928
	Subtotal	689,538			691,801
	General corporate (b)	49,032			48,590
	Cash and cash equivalents (d)	50,056			52,617
	Total	$	788,626		$	793,008
Schedule Of Depreciation And Amortization, Capital Expenditures
		Depreciation and Amortization									Capital Expenditures
	(In Thousands)	2014			2013			2012			2014		2013		2012
	Film Products	$	30,730		$	35,332		$	39,202		$	38,806	$	64,867	$	30,484
	Aluminum Extrusions	9,974			9,202			9,984			6,092		14,742		2,332
	Subtotal	40,704			44,534			49,186			44,898		79,609		32,816
	General corporate	114			121			73			—		52		436
	Continuing operations	40,818			44,655			49,259			44,898		79,661		33,252
	Discontinued operations	—			—			10			—		—		—
	Total	$	40,818		$	44,655		$	49,269		$	44,898	$	79,661	$	33,252
Schedule Of Net Sales By Geographic Area
	Net Sales by Geographic Area (d)
	(In Thousands)	2014			2013			2012
	United States	$	542,395		$	534,346		$	480,041
	Exports from the United States to:
	Asia	72,597			82,235			57,639
	Canada	47,391			46,481			46,948
	Europe	10,874			6,984			5,186
	Latin America	3,116			3,505			3,145
	Operations outside the United States:
	Brazil	97,954			109,415			121,373
	The Netherlands	74,329			68,471			67,758
	Hungary	39,457			43,482			41,285
	China	26,109			28,702			30,636
	India	8,811			7,100			3,331
	Total (c)	$	923,033		$	930,721		$	857,342
Schedule Of Identifiable Assets By Geographic Area, Property, Plant & Equipment, Net By Geographic Area
		Identifiable Assets						Property, Plant & Equipment,
		by Geographic Area (d)						Net by Geographic Area (d)
	(In Thousands)	2014			2013			2014			2013
	United States (b)	$	409,272		$	419,234		$	115,189		$	141,444
	Operations outside the United States:
	Brazil	212,186			191,415			119,066			99,956
	The Netherlands	23,729			32,156			9,117			14,172
	China	23,037			25,165			14,141			14,430
	Hungary	13,440			17,681			5,829			7,461
	India	7,874			6,150			5,575			4,007
	General corporate (b)	49,032			48,590			1,040			1,090
	Cash and cash equivalents (d)	50,056			52,617			n/a			n/a
	Total	$	788,626		$	793,008		$	269,957		$	282,560
Schedule Of Net Sales By Product Group
	Net Sales by Product Group
	(In Thousands)	2014			2013			2012
	Film Products:
	Personal care materials	$	317,080		$	339,559		$	327,161
	Flexible packaging films	114,348			125,712			138,028
	Surface protection films	90,129			90,182			69,627
	Polyethylene overwrap and polypropylene films	44,263			56,590			63,796
	Films for other markets	12,867			9,196			13,265
	Subtotal	578,687			621,239			611,877
	Aluminum Extrusions:
	Nonresidential building & construction	200,707			179,437			165,159
	Consumer durables	44,897			39,565			12,259
	Machinery & equipment	26,907			21,936			8,773
	Automotive	22,272			19,919			11,757
	Residential building & construction	21,470			22,055			23,555
	Distribution	15,318			13,115			15,227
	Electrical	12,775			13,455			8,735
	Subtotal	344,346			309,482			245,465
	Total	$	923,033		$	930,721		$	857,342

Accounts_And_Other_Receivables1

Accounts And Other Receivables (Tables)	12 Months Ended
	Dec. 31, 2014
Accounts and Notes Receivable, Net [Abstract]
Schedule Of Accounts And Other Receivable	Accounts and other receivables consist of the following:
	(In Thousands)	2014			2013
	Trade, less allowance for doubtful accounts and sales returns of $2,610 in 2014 and $3,327 in 2013	$	106,093		$	94,684
	Other	7,248			4,562
	Total	$	113,341		$	99,246
Schedule Of Reconciliation Of The Beginning And Ending Balances Of The Allowance For Doubtful Accounts And Sales Returns	A reconciliation of the beginning and ending balances of the allowance for doubtful accounts and sales returns for the three years ended December 31, 2014 is as follows:
	(In Thousands)	2014			2013			2012
	Balance, beginning of year	$	3,327		$	3,552		$	3,539
	Charges to expense	1,344			1,874			1,589
	Recoveries	(1,654		)	(1,760		)	(1,076		)
	Write-offs	(153		)	(285		)	(588		)
	Foreign exchange and other	(254		)	(54		)	88
	Balance, end of year	$	2,610		$	3,327		$	3,552

Inventories_Tables

Inventories (Tables)	12 Months Ended
	Dec. 31, 2014
Inventory, Net [Abstract]
Schedule Of Inventories	Inventories consist of the following:
	(In Thousands)	2014		2013
	Finished goods	$	17,559	$	14,953
	Work-in-process	10,089		7,750
	Raw materials	25,227		24,477
	Stores, supplies and other	21,433		23,483
	Total	$	74,308	$	70,663

Goodwill_And_Other_Intangible_1

Goodwill And Other Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule Of Goodwill And Other Intangibles	The components of goodwill and other intangibles at December 31, 2014 and 2013, and related amortization periods for continuing operations are as follows:
	(In Thousands)		2014			2013			Amortization Periods
	Goodwill		$	169,687		$	172,788		Not amortized
	Other identifiable intangibles:
	Customer relationships (cost basis of $29,117 in 2014 and $31,357 in 2013)		21,620			25,962			10-12 years
	Proprietary technology (cost basis of $18,228 in 2014 and $18,851 in 2013)		11,824			14,356			Not more than 15 years
	Trade names		11,998			12,594			Indefinite life
	Non-compete agreements (cost basis of $4,154 in 2014 and 2013)		—			600			2 years
	Total carrying value of other intangibles		45,442			53,512
	Total carrying value of goodwill and other intangibles		$	215,129		$	226,300
Reconciliation Of The Beginning And Ending Balance Of Goodwill	A reconciliation of the beginning and ending balance of goodwill for each of the three years in the period ended December 31, 2014 is as follows:
	(In Thousands)		2014			2013			2012
	Net carrying value of goodwill, beginning of year		$	172,788		$	176,620		$	165,372
	Acquisitions		—			—			13,695
	Increase (decrease) due to foreign currency translation		(3,101		)	(3,832		)	(2,447		)
	Net carrying value of goodwill, end of year		$	169,687		$	172,788		$	176,620
Schedule Of Expected Amortization Expense	Amortization expense for continuing operations over the next five years is expected to be as follows:
	Year	Amount
		(In Thousands)
	2015	$	4,741
	2016	4,702
	2017	4,702
	2018	4,702
	2019	4,568

Financial_Instruments_Tables

Financial Instruments (Tables)	12 Months Ended
	Dec. 31, 2014
Derivatives, Fair Value [Line Items]
Schedule Of Pretax Effect On Net Income (Loss) And Other Comprehensive Income (Loss) Of Derivative Instruments Classified As Cash Flow Hedges	The pretax effect on net income (loss) and other comprehensive income (loss) of derivative instruments classified as cash flow hedges and described in the previous paragraphs for years ended December 31, 2014, 2013, and 2012 is summarized in the tables below:
	(In Thousands)	Cash Flow Derivative Hedges
		Aluminum Futures Contracts										Foreign Currency Forwards and Options
	Years Ended December 31,	2014				2013			2012			2014			2013			2012
	Amount of pre-tax gain (loss) recognized in other comprehensive income	$	542			$	(868	)	$	(232	)	$	(120	)	$	(77	)	$	1,421
	Location of gain (loss) reclassified from accumulated other comprehensive income into net income (effective portion)	Cost of				Cost of			Cost of			Cost of
		sales				sales			sales			sales
	Amount of pre-tax gain (loss) reclassified from accumulated other comprehensive income to net income (effective portion)	$	631			$	(583	)	$	(1,026	)	$	16		$	—		$	—
Aluminum Futures Contracts
Derivatives, Fair Value [Line Items]
Summary Of Location And Fair Value Of Derivative Financial Instruments	The table below summarizes the location and gross amounts of aluminum derivative contract fair values (Level 2) in the consolidated balance sheets as of December 31, 2014 and 2013:
		31-Dec-14						31-Dec-13
	(In Thousands)	Balance Sheet		Fair				Balance Sheet	Fair
		Account		Value				Account	Value
	Derivatives Designated as Hedging Instruments
	Asset derivatives:	Accrued expenses		$	82			Accrued expenses	$	31
	Aluminum futures contracts
	Liability derivatives:	Accrued expenses		$	(318	)		Accrued expenses	$	(178	)
	Aluminum futures contracts
	Derivatives Not Designated as Hedging Instruments
	Asset derivatives:	Accrued expenses		$	7			Accrued expenses	$	—
	Aluminum futures contracts
	Liability derivatives:	Accrued expenses		$	(7	)		Accrued expenses	$	—
	Aluminum futures contracts
	Net asset (liability)			$	(236	)			$	(147	)
Foreign Currency Forward Contracts
Derivatives, Fair Value [Line Items]
Summary Of Location And Fair Value Of Derivative Financial Instruments	The table below summarizes the location and gross amounts of foreign currency forward contract fair values (Level 2) in the consolidated balance sheets as of December 31, 2014 and 2013:
		31-Dec-14						31-Dec-13
	(In Thousands)	Balance Sheet		Fair				Balance Sheet	Fair
		Account		Value				Account	Value
	Derivatives Designated as Hedging Instruments
	Asset derivatives:			$	—			Prepaid expenses	$	47
	Foreign currency forward contracts							and other
	Net asset (liability)			$	—				$	47

Accrued_Expenses_Tables

Accrued Expenses (Tables)	12 Months Ended
	Dec. 31, 2014
Accrued Liabilities [Abstract]
Schedule Of Accrued Expenses	Accrued expenses consist of the following:
	(In Thousands)	2014			2013
	Vacation	$	7,266		$	7,077
	Payrolls, related taxes and medical and other benefits	4,119			5,679
	Incentive compensation	3,803			4,148
	Workers’ compensation and disabilities	3,007			2,753
	Accrued utilities	2,186			2,494
	Taxes other than federal income and payroll	841			2,153
	Contractual indemnification claims (see note 3)	—			2,604
	Other	10,827			15,250
	Total	$	32,049		$	42,158
Schedule Of Reconciliation Of Beginning And Ending Balances Of Accrued Expenses Associated With Asset Impairments And Costs Associated With Exit And Disposal Activities	A reconciliation of the beginning and ending balances of accrued expenses associated with asset impairments and costs associated with exit and disposal activities for each of the three years in the period ended December 31, 2014 is as follows:
	(In Thousands)	Severance			Asset Impairments			Other (a)			Total
	Balance at January 1, 2012	$	197		$	—		$	—		$	197
	For the year ended December 31, 2012:
	Charges	1,562			1,077			2,255			4,894
	Cash spend	(1,463		)	—			(1,670		)	(3,133		)
	Charges against assets	—			(1,077		)	—			(1,077		)
	Balance at December 31, 2012	296			—			585			881
	For the year ended December 31, 2013:
	Charges	671			172			569			1,412
	Cash spend	(636		)	—			(798		)	(1,434		)
	Charges against assets	—			(172		)	—			(172		)
	Balance at December 31, 2013	331			—			356			687
	For the year ended December 31, 2014:
	Charges	2,668			227			131			3,026
	Cash spend	(2,753		)	—			(286		)	(3,039		)
	Charges against assets	—			(227		)	—			(227		)
	Balance at December 31, 2014	$	246		$	—		$	201		$	447
	(a)	Other includes other shutdown-related costs associated with the shutdown of the Company’s aluminum extrusions manufacturing facility in Kentland, Indiana.

Debt_And_Credit_Agreements_Tab

Debt And Credit Agreements (Tables)	12 Months Ended
	Dec. 31, 2014
Debt Disclosure [Abstract]
Schedule Of Borrowings Under Credit Agreement At Various Indebtedness To Adjusted EBITDA Levels	Borrowings under the Credit Agreement bear an interest rate of LIBOR plus a credit spread and commitment fees charged on the unused amount under the Credit Agreement at various indebtedness-to-adjusted-EBITDA levels as follows:
	Pricing Under Credit Revolving Agreement (Basis Points)
	Indebtedness-to-Adjusted EBITDA Ratio		Credit Spread	Commitment
			Over LIBOR	Fee
	> 2.0x but <=.0x		200	35
	> 1.0x but <=0x		175	30
	<=.0x		150	25
Summary Of Total Debt Due And Outstanding	At December 31, 2014, based upon the most restrictive covenants within the Credit Agreement, available credit under the Credit Agreement was approximately $155 million. Total debt due and outstanding at December 31, 2014 is summarized below:
	Debt Due and Outstanding at December 31, 2014
	(In Thousands)
	Year Due	Credit		Other		Total Debt
		Agreement				Due
	2015	$	—	$	—	$	—
	2016	—		—		—
	2017	137,250		—		137,250
	2018	—		—		—
	2019	—		—		—
	Total	$	137,250	$	—	$	137,250

Stock_Option_And_Stock_Award_P1

Stock Option And Stock Award Plans (Tables)	12 Months Ended
	Dec. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Summary Of Stock Options Outstanding	A summary of stock options outstanding at December 31, 2014, 2013 and 2012, and changes during those years, is presented below:
				Option Exercise Price/Share
		Number of		Range										Weighted
		Options												Average
	Outstanding at January 1, 2012	1,121,500		$	14.06			to		$	19.84			$	17.4
	Granted	182,100		18.51				to		19.4				19.34
	Forfeited and Expired	(50,300	)	15.8				to		19.84				19.34
	Exercised	(176,600	)	14.72				to		18.12				16.33
	Outstanding at December 31, 2012	1,076,700		14.06				to		19.84				17.81
	Granted	184,700		24.84				to		30.01				24.97
	Forfeited and Expired	(34,000	)	15.11				to		24.84				21.1
	Exercised	(180,600	)	14.27				to		19.84				17.32
	Outstanding at December 31, 2013	1,046,800		14.06				to		30.01				19.06
	Granted	181,476		19.84				to		22.49				22.41
	Forfeited and Expired	(22,581	)	15.8				to		24.84				21.42
	Exercised	(41,575	)	15.8				to		19.84				17.55
	Outstanding at December 31, 2014	1,164,120		$	14.06			to		$	30.01			$	19.59
Summary Of Additional Information On Stock Options Outstanding And Exercisable	The following table summarizes additional information about stock options outstanding and exercisable at December 31, 2014:
										Options Outstanding at										Options Exercisable at
										December 31, 2014										December 31, 2014
													Weighted Average				Aggregate Intrinsic Value						Aggregate Intrinsic Value
	Range of									Shares			Remaining Contractual Life (Years)		Exercise		(In Thousands)			Shares	Weighted		(In Thousands)
	Exercise Prices														Price						Average
																					Exercise
																					Price
	$	—		to		$	15			26,000			0.9		$	14.06	$	219		26,000	$	14.06	$	219
	15.01			to		17.5				314,500			1.2		16.53		1,873			314,500	16.53		1,873
	17.51			to		20				488,870			3.3		19.03		1,693			417,550	18.97		1,470
	20.01			to		25				330,250			8.7		23.61		—			40,875	24.84		—
	25.01			to		30.01				4,500			8.6		30.01		—			1,125	30.01		—
	Total									1,164,120			4.2		$	19.59	$	3,785		800,050	$	18.17	$	3,562
Summary Of Additional Information On Non-Vested Restricted Stock Outstanding	The following table summarizes additional information about non-vested restricted stock outstanding at December 31, 2014:
		Non-vested Restricted Stock										Maximum Non-vested Restricted Stock Units Issuable Upon Satisfaction of Certain Performance Criteria
		Number		Weighted Avg. Grant Date Fair Value/Share				Grant Date				Number			Weighted Avg. Grant Date Fair Value/Share		Grant Date
		of Shares						Fair Value				of Shares					Fair Value
								(In Thousands)									(In Thousands)
	Outstanding at January 1, 2012	126,150		$	18.25			$	2,302			85,000			$	19.35	$	1,645
	Granted	94,949		19.06				1,810				87,200			18.79		1,638
	Vested	(60,357	)	18.01				(1,087		)		—			—		—
	Forfeited	(16,842	)	18.82				(317		)		(80,400	)		19.31		(1,553		)
	Outstanding at December 31, 2012	143,900		18.82				2,708				91,800			18.85		1,730
	Granted	93,425		25.45				2,378				77,200			27.82		2,148
	Vested	(58,175	)	20.15				(1,172		)		—			—		—
	Forfeited	(21,300	)	20.7				(441		)		(36,700	)		19.83		(728		)
	Outstanding at December 31, 2013	157,850		22				3,473				132,300			23.81		3,150
	Granted	95,707		22.18				2,123				59,675			21.54		1,285
	Vested	(54,921	)	20.73				(1,139		)		—			—		—
	Forfeited	(10,578	)	21.76				(230		)		(62,262	)		19.18		(1,194		)
	Outstanding at December 31, 2014	188,058		$	22.48			$	4,227			129,713			$	24.99	$	3,241

Retirement_Plans_And_Other_Pos1

Retirement Plans And Other Postretirement Benefits (Tables)	12 Months Ended
	Dec. 31, 2014
Compensation and Retirement Disclosure [Abstract]
Reconciliation Of Changes In Benefit Obligations And Plan Assets	The following tables reconcile the changes in benefit obligations and plan assets in 2014 and 2013, and reconcile the funded status to prepaid or accrued cost at December 31, 2014 and 2013:
			Pension Benefits									Other Post-
												Retirement Benefits
	(In Thousands)		2014				2013					2014				2013
	Change in benefit obligation:
	Benefit obligation, beginning of year		$	275,166			$	302,285				$	7,858			$	8,879
	Service cost		869				3,754					43				58
	Interest cost		13,397				12,338					387				345
	Effect of actuarial (gains) losses related to the following:
	Discount rate change		32,089				(26,848		)			732				(746		)
	Retirement rate assumptions and mortality table adjustments		17,331				(144		)			(131		)		—
	Retiree medical participation rate change		—				—					(390		)		—
	Other		490				(3,058		)			218				(382		)
	Plan participant contributions		—				—					681				683
	Benefits paid		(13,916		)		(13,161		)			(1,026		)		(979		)
	Benefit obligation, end of year		$	325,426			$	275,166				$	8,372			$	7,858
	Change in plan assets:
	Plan assets at fair value, beginning of year		$	232,705			$	219,035				$	—			$	—
	Actual return on plan assets		7,466				21,657					—				—
	Employer contributions		2,762				5,174					345				296
	Plan participant contributions		—				—					681				683
	Benefits paid		(13,916		)		(13,161		)			(1,026		)		(979		)
	Plan assets at fair value, end of year		$	229,017			$	232,705				$	—			$	—
	Funded status of the plans		$	(96,409	)		$	(42,461	)			$	(8,372	)		$	(7,858	)
	Amounts recognized in the consolidated balance sheets:
	Accrued expenses (current)		$	130			$	—				$	456			$	—
	Other noncurrent liabilities		96,279				42,461					7,916				7,858
	Net amount recognized		$	96,409			$	42,461				$	8,372			$	7,858
Components Of Net Periodic Benefit Income Or Cost For Continuing Operations	Assumptions used for financial reporting purposes to compute net benefit income or cost and benefit obligations for continuing operations, and the components of net periodic benefit income or cost for continuing operations, are as follows:
			Pension Benefits													Other Post-
																Retirement Benefits
	(In Thousands, Except Percentages)		2014				2013				2012					2014				2013				2012
	Weighted-average assumptions used to determine benefit obligations:
	Discount rate		4.17		%		4.99		%		4.21		%			4.11		%		4.88		%		4.1		%
	Weighted-average assumptions used to determine net periodic benefit cost:
	Discount rate		4.99		%		4.21		%		4.95		%			4.88		%		4.1		%		4.9		%
	Expected long-term return on plan assets		7.75		%		7.75		%		8		%			n/a				n/a				n/a
	Components of net periodic benefit cost:
	Service cost		$	869			$	3,754			$	3,657				$	43			$	58			$	58
	Interest cost		13,397				12,338				13,084					387				345				385
	Expected return on plan assets		(18,301		)		(17,430		)		(19,108		)			—				—				—
	Amortization of prior service costs and gains or losses		10,688				15,028				10,377					(190		)		(210		)		(241		)
	Settlement/curtailment		81				28				99					—				—				—
	Net periodic benefit cost		$	6,734			$	13,718			$	8,109				$	240			$	193			$	202
Schedule Of Expected Benefit Payments For Continuing Operations	Expected benefit payments for continuing operations over the next five years and in the aggregate for 2020-2024 are as follows:
	(In Thousands)	Pension				Other Post-
		Benefits				Retirement
						Benefits
	2015	$	15,282			$	456
	2016	15,932				471
	2017	16,527				480
	2018	17,004				489
	2019	17,555				494
	2020—2024	93,535				2,511
Schedule Of Amounts Recognized Before Related Deferred Income Taxes In Accumulated Other Comprehensive Income	Amounts recognized in 2014, 2013 and 2012 before related deferred income taxes in accumulated other comprehensive income consist of:
		Pension												Other Post-Retirement
	(In Thousands)	2014				2013				2012				2014				2013				2012
	Prior service cost (benefit)	$	87			$	270			$	(887	)		$	—			$	—			$	—
	Net actuarial (gain) loss	166,678				116,519				167,009				(1,154		)		(1,773		)		(855		)
Schedule Of Amounts Before Related Deferred Income Taxes In Accumulated Other Comprehensive Income That Are Expected To Be Recognized As Components Of Net Periodic Benefit Or Cost	The amounts before related deferred income taxes in accumulated other comprehensive income that are expected to be recognized as components of net periodic benefit or cost during 2015 are as follows:
	(In Thousands)	Pension				Other Post-
						Retirement
	Prior service cost (benefit)	$	24			$	—
	Net actuarial (gain) loss	16,107				(160		)
Schedule Of Percentage Composition Of Assets Held By Pension Plans	The percentage composition of assets held by pension plans for continuing operations at December 31, 2014, 2013 and 2012 are as follows:
		% Composition of Plan Assets
		at December 31,
		2014			2013			2012
	Pension plans related to continuing operations:
	Fixed income securities	14.5	%		14	%		14.7	%
	Large/mid-capitalization equity securities	13.7			13.8			10.9
	Small-capitalization equity securities	4.3			4.8			5.4
	International and emerging market equity securities	11			11.7			10
	Total equity securities	29			30.3			26.3
	Private equity and hedge funds	51.2			48.3			50
	Other assets	5.3			7.4			9
	Total for continuing operations	100	%		100	%		100	%
Schedule Of Targeted Allocation Percentage For Pension Plan Assets And Expected Long-Term Rate Of Return On Assets	targeted allocation percentage for pension plan assets and the expected long-term rate of return on assets used to determine its benefit obligation at December 31, 2014 are as follows:
		Target % Composition of Plan Assets *			Expected Long-term Return %
	Pension plans related to continuing operations:
	Fixed income securities	32	%		5.5	%
	Large/mid-capitalization equity securities	10			8.8
	Small-capitalization equity securities	4			9.9
	International and emerging market equity securities	13			9.8
	Total equity securities	27			9.4
	Private equity and hedge funds	41			7.8
	Total for continuing operations	100	%		7.5	%
	*	Target percentages for the composition of plan assets represents a neutral position within the approved range of
		allocations for such assets.
Schedule Of Pension Plan Assets Categorized By Level Within Fair Value Measurement Hierarchy	At December 31, 2014 and 2013, the pension plan assets are categorized by level within the fair value measurement hierarchy as follows:
	(In Thousands)		Total				Quoted Prices				Significant				Significant
							in Active				Other				Unobservable
							Markets for				Observable				Inputs
							Identical Assets				Inputs				(Level 3)
							(Level 1)				(Level 2)
	Balances at December 31, 2014:
	Large/mid-capitalization equity securities		$	31,401			$	31,401			$	—			$	—
	Small-capitalization equity securities		9,827				9,827				—				—
	International and emerging market equity securities		25,224				11,471				13,753				—
	Fixed income securities		33,281				12,661				20,620				—
	Private equity and hedge funds		117,276				—				106,201				11,075
	Other assets		1,741				1,741				—				—
	Total plan assets at fair value		$	218,750			$	67,101			$	140,574			$	11,075
	Contracts with insurance companies		10,267
	Total plan assets, December 31, 2014		$	229,017
	Balances at December 31, 2013:
	Large/mid-capitalization equity securities		$	32,134			$	32,134			$	—			$	—
	Small-capitalization equity securities		11,063				11,063				—				—
	International and emerging market equity securities		27,271				13,488				13,783				—
	Fixed income securities		32,601				17,770				14,831				—
	Private equity and hedge funds		112,345				—				103,531				8,814
	Other assets		7,871				7,871				—				—
	Total plan assets at fair value		$	223,285			$	82,326			$	132,145			$	8,814
	Contracts with insurance companies		9,420
	Total plan assets, December 31, 2013		$	232,705
Schedule Of Fair Value Measurements Of Plan Assets Using Significant Unobservable Inputs (Level 3), Reconciliation Of Balances	For fair value measurements of plan assets using significant unobservable inputs (Level 3), a reconciliation of the balances from January 1, 2013 to December 31, 2014 are as follows:
	(In Thousands)	Private equity and
		hedge funds
	Balance at January 1, 2013	$	8,356
	Purchases	2,864
	Sales	—
	Distributions	(2,567		)
	Actual return on plan assets still held at year end	161
	Transfers in and/or out of Level 3	—
	Balance at December 31, 2013	$	8,814
	Purchases	4,142
	Sales	—
	Distributions	(2,088		)
	Actual return on plan assets still held at year end	207
	Transfers in and/or out of Level 3	—
	Balance at December 31, 2014	$	11,075

Rental_Expense_And_Contractual1

Rental Expense And Contractual Commitments (Tables)	12 Months Ended
	Dec. 31, 2014
Leases, Operating [Abstract]
Schedule Of Rental Commitments Under All Non-Cancelable Operating Leases For Continuing Operation	Rental expense for continuing operations was $3.6 million in 2014, $3.4 million in 2013 and $3.6 million in 2012. Rental commitments under all non-cancelable operating leases for continuing operations as of December 31, 2014, are as follows:
	Year	Amount
		(In Thousands)
	2015	$	2,379
	2016	1,908
	2017	1,870
	2018	1,787
	2019	657
	Remainder	1,327
	Total	$	9,928

Income_Taxes_Tables

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Schedule Of Income From Continuing Operations Before Income Taxes	Income from continuing operations before income taxes and income taxes are as follows:
	(In Thousands)		2014				2013			2012
	Income from continuing operations before income taxes:
	Domestic		$	38,402			$	37,380		$	35,488
	Foreign		7,014				15,552			26,016
	Total		$	45,416			$	52,932		$	61,504
	Current income taxes:
	Federal		$	14,568			$	15,988		$	10,905
	State		2,178				1,416			796
	Foreign		4,102				4,737			7,372
	Total		20,848				22,141			19,073
	Deferred income taxes:
	Federal		(9,530		)		(2,933		)	1,212
	State		(417		)		(852		)	163
	Foreign		(1,514		)		(1,361		)	(2,129		)
	Total		(11,461		)		(5,146		)	(754		)
	Total income taxes		$	9,387			$	16,995		$	18,319
Summary Of Effective Income Tax Rate For Continuing Operations	The significant differences between the U.S. federal statutory rate and the effective income tax rate for continuing operations are as follows:
		Percent of Income Before Income
		Taxes from Continuing  Operations
		2014			2013			2012
	Income tax expense at federal statutory rate	35			35			35
	State taxes, net of federal income tax benefit	2.2			0.1			1.1
	Tax contingency accruals and tax settlements	2			2			(0.5	)
	Non-deductible expenses	0.9			0.6			0.3
	Foreign rate differences	(0.1	)		(0.7	)		(0.6	)
	Tax incentive	(0.1	)		(4.7	)		(7.0	)
	Valuation allowance for foreign operating loss carry-forwards	(0.4	)		0.5			(0.1	)
	Research and development tax credit	(0.6	)		(0.4	)		—
	Domestic Production Activities Deduction	(1.9	)		(1.4	)		(0.6	)
	Changes in estimates related to prior year tax provision	(2.3	)		(0.6	)		(0.5	)
	Unremitted earnings from foreign operations	(3.8	)		0.9			0.6
	Valuation allowance for capital loss carry-forwards	(10.2	)		0.8			1.9
	Other	—			—			0.2
	Effective income tax rate for continuing operations	20.7			32.1			29.8
Schedule Of Deferred Tax Liabilities And Assets	Deferred tax liabilities and deferred tax assets at December 31, 2014 and 2013, are as follows:
	(In Thousands)	2014				2013
	Deferred tax liabilities:
	Amortization of goodwill and other intangibles	$	45,696			$	46,738
	Depreciation	27,550				29,994
	Foreign currency translation gain adjustment	4,233				8,620
	Derivative financial instruments	316				432
	Total deferred tax liabilities	77,795				85,784
	Deferred tax assets:
	Pensions	34,214				14,813
	Employee benefits	11,597				11,124
	Inventory	6,221				2,292
	Excess capital losses and book/tax basis differences on investments	3,282				4,316
	Tax benefit on state and foreign NOL and credit carryforwards	2,967				1,871
	Asset write-offs, divestitures and environmental accruals	1,593				3,734
	Timing adjustment for unrecognized tax benefits on uncertain tax positions, including portion relating to interest and penalties	842				600
	Allowance for doubtful accounts	479				639
	Other	799				1,247
	Deferred tax assets before valuation allowance	61,994				40,636
	Less: Valuation allowance	14,577				20,019
	Total deferred tax assets	47,417				20,617
	Net deferred tax liability	$	30,378			$	65,167
	Included in the balance sheet:
	Noncurrent deferred tax liabilities in excess of assets	$	39,255			$	70,795
	Current deferred tax assets in excess of liabilities	8,877				5,628
	Net deferred tax liability	$	30,378			$	65,167
Schedule Of Unrecognized Uncertain Tax Positions	A reconciliation of the Company’s unrecognized uncertain tax positions since January 1, 2012, is shown below:
			Years Ended December 31,
	(In Thousands)		2014				2013			2012
	Balance at beginning of period		$	2,239			$	910		$	1,025
	Increase (decrease) due to tax positions taken in:
	Current period		619				643			432
	Prior period		397				686			(21		)
	Increase (decrease) due to settlements with taxing authorities		—				—			(398		)
	Reductions due to lapse of statute of limitations		—				—			(128		)
	Balance at end of period		$	3,255			$	2,239		$	910
Schedule Of Additional Information Related To Unrecognized Uncertain Tax Positions	Additional information related to unrecognized uncertain tax positions since January 1, 2012 is summarized below:
			Years Ended December 31,
	(In Thousands)		2014				2013			2012
	Gross unrecognized tax benefits on uncertain tax positions (reflected in current income tax and other noncurrent liability accounts in the balance sheet)		$	3,255			$	2,239		$	910
	Deferred income tax assets related to unrecognized tax benefits on uncertain tax positions (reflected in deferred income tax accounts in the balance sheet)		(726		)		(540		)	(212		)
	Net unrecognized tax benefits on uncertain tax positions, which would impact the effective tax rate if recognized		2,529				1,699			698
	Interest and penalties accrued on deductions taken relating to uncertain tax positions (approximately $150, $100 and $(300) reflected in income tax expense in the income statement in 2014, 2013 and 2012, respectively, with the balance shown in current income tax and other noncurrent liability accounts in the balance sheet)		310				156			60
	Related deferred income tax assets recognized on interest and penalties		(116		)		(60		)	(23		)
	Interest and penalties accrued on uncertain tax positions net of related deferred income tax benefits, which would impact the effective tax rate if recognized		194				96			37
	Total net unrecognized tax benefits on uncertain tax positions reflected in the balance sheet, which would impact the effective tax rate if recognized		$	2,723			$	1,795		$	735

Selected_Quarterly_Financial_D1

Selected Quarterly Financial Data (Tables)	12 Months Ended
	Dec. 31, 2014
Quarterly Financial Information Disclosure [Abstract]
Schedule Of Selected Quarterly Financial Data	Tredegar Corporation and Subsidiaries
	(In Thousands, Except Per-Share Amounts)
	(Unaudited)
		First			Second			Third			Fourth
		Quarter			Quarter			Quarter			Quarter
	For the year ended December 31, 2014
	Sales	$	235,213		$	236,965		$	240,429		$	239,219
	Gross profit	37,749			38,480			34,582			34,109
	Income from continuing operations	8,479			3,752			10,745			13,054
	Income (loss) from discontinued operations	—			—			850			—
	Net income	$	8,479		$	3,752		$	11,595		$	13,054
	Earnings (loss) per share:
	Basic
	Continuing operations	$	0.26		$	0.12		$	0.33		$	0.4
	Discontinued operations	—			—			0.03			—
	Net income	$	0.26		$	0.12		$	0.36		$	0.4
	Diluted
	Continuing operations	$	0.26		$	0.11		$	0.33		$	0.4
	Discontinued operations	—			—			0.03			—
	Net income	$	0.26		$	0.11		$	0.36		$	0.4
	Shares used to compute earnings (loss) per share:
	Basic	32,242			32,312			32,319			32,335
	Diluted	32,621			32,641			32,507			32,449
	For the year ended December 31, 2013
	Sales	$	241,526		$	243,530		$	243,194		$	231,096
	Gross profit	36,836			37,540			37,253			34,417
	Income from continuing operations	9,517			9,590			7,428			9,402
	Income (loss) from discontinued operations	(5,240		)	(8,300		)	(450		)	—
	Net income (loss)	$	4,277		$	1,290		$	6,978		$	9,402
	Earnings (loss) per share:
	Basic
	Continuing operations	$	0.3		$	0.3		$	0.23		$	0.29
	Discontinued operations	(0.16		)	(0.26		)	(0.01		)	—
	Net income (loss)	$	0.14		$	0.04		$	0.22		$	0.29
	Diluted
	Continuing operations	$	0.29		$	0.29		$	0.23		$	0.29
	Discontinued operations	(0.16		)	(0.25		)	(0.02		)	—
	Net income (loss)	$	0.13		$	0.04		$	0.21		$	0.29
	Shares used to compute earnings (loss) per share:
	Basic	32,076			32,187			32,201			32,222
	Diluted	32,480			32,635			32,658			32,622

Summary_Of_Significant_Account3

Summary Of Significant Accounting Policies (Narrative) (Details) (USD $)	3 Months Ended	12 Months Ended
	Mar. 31, 2009	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012	Dec. 31, 2011
Summary Of Significant Accounting Policies [Line Items]
Interest Costs Capitalized		$1,100,000		$900,000		$200,000
Foreign Currency Transaction Gain (Loss), before Tax		-1,500,000		-400,000		16,000
Cash and cash equivalents		50,056,000	[1]	52,617,000	[1]	48,822,000	68,939,000
Investments, percentage of voting ownership interest		50.00%
Goodwill, Impairment Loss	30,600,000
Goodwill Impairment Loss Net Of Tax	30,600,000
Incremental shares excluded from the calculation of incremental shares attributable to stock options and restricted stock		320,849		31,167		632,050
Foreign Country
Summary Of Significant Accounting Policies [Line Items]
Cash and cash equivalents		$40,500,000		$38,600,000
Minimum | Buildings And Land Improvements
Summary Of Significant Accounting Policies [Line Items]
Average useful life		5 years
Minimum | Machinery & equipment
Summary Of Significant Accounting Policies [Line Items]
Average useful life		2 years
Maximum | Buildings And Land Improvements
Summary Of Significant Accounting Policies [Line Items]
Average useful life		40 years
Maximum | Machinery & equipment
Summary Of Significant Accounting Policies [Line Items]
Average useful life		20 years
PET Films
Summary Of Significant Accounting Policies [Line Items]
Percentage estimated fair value of PET Films exceeded carrying value of net assets		31.00%
Aluminum Extrusions
Summary Of Significant Accounting Policies [Line Items]
Number of reporting units		2
AACOA
Summary Of Significant Accounting Policies [Line Items]
Percentage estimated fair value of PET Films exceeded carrying value of net assets		63.00%
[1]	Information on exports and foreign operations are provided on the previous page. Cash and cash equivalents includes funds held in locations outside the U.S. of $40.5 million and $38.6 million at December 31, 2014 and 2013, respectively. Export sales relate almost entirely to Film Products. Operations outside the U.S. in The Netherlands, Hungary, China, Brazil and India also relate to Film Products. Sales from locations in The Netherlands and Hungary are primarily to customers located in Europe. Sales from locations in China (Guangzhou and Shanghai) are primarily to customers located in China, but also include other customers in Asia.

Summary_Of_Significant_Account4

Summary Of Significant Accounting Policies (Schedule Of Diluted Earnings Per Share Computed Using Weighted Average Common And Potentially Dilutive Common Equivalent Shares Outstanding) (Details)	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Accounting Policies [Abstract]
Weighted average shares outstanding used to compute basic earnings per share	32,335,000	32,319,000	32,312,000	32,242,000	32,222,000	32,201,000	32,187,000	32,076,000	32,302,108	32,171,751	32,032,343
Incremental shares attributable to stock options and restricted stock									251,746	427,528	160,233
Shares used to compute diluted earnings per share	32,449,000	32,507,000	32,641,000	32,621,000	32,622,000	32,658,000	32,635,000	32,480,000	32,553,854	32,599,279	32,192,576

Summary_Of_Significant_Account5

Summary Of Significant Accounting Policies (Schedule Of Assumptions For Valuing Stock Options Granted) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividend yield	1.30%	1.10%	0.90%
Weighted average volatility percentage	43.50%	48.30%	48.70%
Weighted average risk-free interest rate	2.00%	1.10%	1.00%
Weighted average exercise price at date of grant (also weighted average market price at date of grant):	$22.41	$24.97	$19.34
Officers
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Holding period (years):	6 years	6 years	6 years
Weighted average exercise price at date of grant (also weighted average market price at date of grant):	$22.49	$24.84	$19.30
Management
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Holding period (years):	5 years	5 years	5 years
Weighted average exercise price at date of grant (also weighted average market price at date of grant):	$22.33	$25.10	$19.40

Summary_Of_Significant_Account6

Summary Of Significant Accounting Policies (Schedule Of Stock Options Granted And Related Estimated Fair Value At Date Of Grant) (Details) (USD $)	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Stock options granted (number of shares):
Stock options granted (number of shares)	181,476	184,700	182,100
Estimated weighted average fair value of options per share at date of grant:
Total estimated fair value of stock options granted	$1,521	$1,850	$1,449
Officers
Stock options granted (number of shares):
Stock options granted (number of shares)	87,820	94,400	99,600
Estimated weighted average fair value of options per share at date of grant:
Estimated weighted average fair value of options per share at date of grant	$9.21	$10.37	$8.07
Management
Stock options granted (number of shares):
Stock options granted (number of shares)	93,656	90,300	82,500
Estimated weighted average fair value of options per share at date of grant:
Estimated weighted average fair value of options per share at date of grant	$7.60	$9.65	$7.31

Recovered_Sheet1

Summary of Significant Accounting Policies (Schedule of Accumulated Other Comprehensive Income (loss)) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	($90,288)	($102,347)
Other comprehensive income (loss) before reclassifications	-66,501	2,277
Amounts reclassified from accumulated other comprehensive income (loss)	6,594	9,782
Other comprehensive income (loss)	-59,907	12,059	-22,962
Ending balance	-150,195	-90,288	-102,347
Foreign currency translation adjustment
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	-19,205	131
Other comprehensive income (loss) before reclassifications	-28,065	-19,336
Amounts reclassified from accumulated other comprehensive income (loss)	0	0
Other comprehensive income (loss)	-28,065	-19,336
Ending balance	-47,270	-19,205
Gain (loss) on derivative financial instruments
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	765	993
Other comprehensive income (loss) before reclassifications	294	-590
Amounts reclassified from accumulated other comprehensive income (loss)	-403	362
Other comprehensive income (loss)	-109	-228
Ending balance	656	765
Pension and other post-retirement benefit adjustments
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	-71,848	-103,471
Other comprehensive income (loss) before reclassifications	-38,730	22,203
Amounts reclassified from accumulated other comprehensive income (loss)	6,997	9,420
Other comprehensive income (loss)	-31,733	31,623
Ending balance	($103,581)	($71,848)

Recovered_Sheet2

Summary of Significant Accounting Policies (Schedule of Reclassifications Out of AOCI) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Cost of goods sold	($778,113)		($784,675)		($712,660)
Income taxes	9,387	[1]	16,995	[1]	18,319	[1]
Gain (loss) on derivative financial instruments | Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total, before taxes	647		-583
Income taxes	244		-221
Total, net of tax	403		-362
Pension and other post-retirement benefit adjustments | Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Actuarial gain (loss) and prior service costs, before taxes	-10,579	[2]	-14,818	[2]
Income taxes	-3,582		-5,398
Total, net of tax	-6,997		-9,420
Aluminum Futures Contracts | Gain (loss) on derivative financial instruments | Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Cost of goods sold	631		-583
Foreign Currency Forward Contracts | Gain (loss) on derivative financial instruments | Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Cost of goods sold	$16		$0
[1]	See Notes 1, 3, 4 and 18 for more information on losses associated with plant shutdowns, asset impairments and restructurings, unusual items, gains or losses from sale of assets, gains or losses on an investment accounted for under the fair value method and other items.
[2]	This component of accumulated other comprehensive income is included in the computation of net periodic pension cost (see Note 14 for additional detail).

Acquisitions_Narratives_Detail

Acquisitions (Narratives) (Details) (USD $)	3 Months Ended								12 Months Ended			0 Months Ended	3 Months Ended	0 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Oct. 02, 2012	Dec. 31, 2012	Oct. 24, 2011
Business Acquisition [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired									$0	($561,000)	$57,936,000
Sales	239,219,000	240,429,000	236,965,000	235,213,000	231,096,000	243,194,000	243,530,000	241,526,000	951,826,000	959,346,000	882,188,000
Net income from continuing operations	13,054,000	10,745,000	3,752,000	8,479,000	9,402,000	7,428,000	9,590,000	9,517,000	36,029,000	35,937,000	43,185,000
AACOA
Business Acquisition [Line Items]
Percentage of outstanding equity interests acquired												100.00%
Total purchase price												54,100,000
Cash received from seller								600,000
Financing used to fund purchase price from existing credit facility												350,000,000
Sales													19,900,000
Net income from continuing operations													1,000,000
Terphane
Business Acquisition [Line Items]
Percentage of outstanding equity interests acquired														100.00%
Payments to Acquire Businesses, Net of Cash Acquired											3,300,000
Total purchase price														182,700,000
Available cash used to fund purchase price														57,700,000
Financing used to fund purchase price														$125,000,000

Acquisitions_Schedule_Of_Preli

Acquisitions (Schedule Of Preliminary Estimated Purchase Price Allocation) (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Oct. 02, 2012
In Thousands, unless otherwise specified
Identifiable intangible assets:
Goodwill	$169,687	$172,788	$176,620	$165,372
AACOA
Business Acquisition [Line Items]
Accounts receivable					12,477
Inventories					4,708
Property, plant & equipment					15,116
Identifiable intangible assets:
Other assets (current & noncurrent)					42
Trade payables & accrued expenses					-6,574
Total identifiable net assets					40,369
Purchase price, net of cash received					54,065
Goodwill					13,696
AACOA | Customer relationships
Identifiable intangible assets:
Identifiable intangible assets - Indefinite					4,800
AACOA | Trade names
Identifiable intangible assets:
Identifiable intangible assets - finite					4,800
AACOA | Proprietary technology
Identifiable intangible assets:
Identifiable intangible assets - Indefinite					3,400
AACOA | Noncompete agreements
Identifiable intangible assets:
Identifiable intangible assets - Indefinite					$1,600

Acquisitions_Schedule_Of_Amort

Acquisitions (Schedule Of Amortized Periods For Acquired Intangible Assets) (Details)	12 Months Ended
	Dec. 31, 2014
Noncompete agreements
Acquired Finite-Lived Intangible Assets [Line Items]
Identifiable Intangible Asset, Useful Life (Yrs)	2 years
AACOA | Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Identifiable Intangible Asset, Useful Life (Yrs)	10 years
AACOA | Noncompete agreements
Acquired Finite-Lived Intangible Assets [Line Items]
Identifiable Intangible Asset, Useful Life (Yrs)	2 years
Minimum | Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Identifiable Intangible Asset, Useful Life (Yrs)	10 years
Minimum | AACOA | Proprietary technology
Acquired Finite-Lived Intangible Assets [Line Items]
Identifiable Intangible Asset, Useful Life (Yrs)	6 years
Maximum | Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Identifiable Intangible Asset, Useful Life (Yrs)	12 years
Maximum | AACOA | Proprietary technology
Acquired Finite-Lived Intangible Assets [Line Items]
Identifiable Intangible Asset, Useful Life (Yrs)	10 years

Acquisitions_Schedule_Of_Suppl

Acquisitions (Schedule Of Supplemental Pro Forma Results) (Details) (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2012
Business Combinations [Abstract]
Sales	$946,594
Income from continuing operations	$44,816
Earnings per share from continuing operations:
Earnings per share from continuing operations, Basic (in usd per share)	$1.40
Earnings per share from continuing operations, Diluted (in usd per share)	$1.39

Discontinued_Operations_Detail

Discontinued Operations (Details) (USD $)	0 Months Ended	12 Months Ended	0 Months Ended	12 Months Ended
In Millions, except Share data, unless otherwise specified	Nov. 20, 2012	Dec. 31, 2012	Feb. 12, 2008	Dec. 31, 2014	Dec. 31, 2013
Falling Springs
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from sale of membership interests	$16.60
Proceeds from sale of business	12.8
Common stock received from sale of membership interests	209,576
Loss on sale of membership interests	3.1
Transaction-related expenses	0.5
Sales reclassified to discontinued operations		3.2
Net income reclassified to discontinued operations		0.5
Aluminum Extrusions Canada Business
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from sale of business			25
Accrual for indemnifications under the purchase agreement related to environmental matters		13.4		-0.9	14
Accrual for indemnifications under the purchase agreement related to environmental matters, net of tax		$13.40		($0.90)	$14

Investments_Narrative_Details

Investments (Narrative) (Details) (USD $)	12 Months Ended						0 Months Ended
	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012		Apr. 02, 2007	Dec. 31, 2008
Investments, Other Investments [Line Items]
Gain (loss) on investment accounted for under the fair value method	$2,000,000		$3,400,000		$16,100,000
kaleo
Investments, Other Investments [Line Items]
Total cash invested in private company								7,500,000
Ownership interest percentage	20.00%
Gain (loss) on investment accounted for under the fair value method	2,000,000	[1]	3,400,000	[1]	16,100,000	[1]
Unrealized gain (loss) on investments, net of tax	1,000,000		2,200,000		10,200,000
Weighted average cost of capital	45.00%		55.00%		55.00%
Basis point decrease of weighted average cost of capital assumption	5.00%
Increase in fair value from five hundred point decrease in weighted average cost of capital assumption	6,000,000
Basis point increase of weighted average cost of capital assumption	5.00%
Decrease in fair value from five hundred point increase in weighted average cost of capital assumption	6,000,000
Harbinger
Investments, Other Investments [Line Items]
Total cash invested in private company							10,000,000
Unrealized loss on investments under fair value method, other than temporary impairment	800,000		400,000		1,100,000
Unrealized loss on investments, net of tax	400,000		300,000		700,000
Withdrawal proceeds	200,000		400,000		500,000
Maximum | Harbinger
Investments, Other Investments [Line Items]
Percent ownership in investment (less than)							2.00%
Other Assets and Deferred Charges [Member] | kaleo
Investments, Other Investments [Line Items]
Carrying value	39,100,000		37,100,000
Other Assets and Deferred Charges [Member] | Harbinger
Investments, Other Investments [Line Items]
Carrying value of investment	1,800,000		2,800,000
Other Assets and Deferred Charges [Member] | Alleghany and Bath County, Virginia
Investments, Other Investments [Line Items]
Carrying value of investment	2,600,000		5,900,000
Alleghany and Bath County, Virginia
Investments, Other Investments [Line Items]
Gain (Loss) on Disposition of Assets	1,208,000		0		0
Unrealized Gain (Loss) on Investment Property	0		1,018,000		0
Unrealized Gain Loss On Investment Property After Tax			-600,000
Gain (Loss) on Sale of Investment Property, After Tax	($800,000)
[1]	See Notes 1, 3, 4 and 18 for more information on losses associated with plant shutdowns, asset impairments and restructurings, unusual items, gains or losses from sale of assets, gains or losses on an investment accounted for under the fair value method and other items.

Investments_Schedule_Of_Fair_V

Investments (Schedule Of Fair Value Method Investments, Balance Sheets And Income Statements) (Details) (USD $)	3 Months Ended										12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014		Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013		Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Assets
Cash and cash equivalents	$50,056	[1]				$52,617	[1]				$50,056	[1]	$52,617	[1]	$48,822		$68,939
Net property, plant and equipment	269,957					282,560					269,957		282,560
Other assets and deferred charges	47,798					49,641					47,798		49,641
Total assets	788,626	[1]				793,008	[1]				788,626	[1]	793,008	[1]
Liabilities and Shareholders’ Equity
Long-term debt, net of discount	137,250					139,000					137,250		139,000
Equity	372,029					402,664					372,029		402,664		372,252		396,907
Total liabilities and shareholders’ equity	788,626					793,008					788,626		793,008
Revenues & Expenses:
Cost of goods sold											778,113		784,675		712,660
Income tax (expense) benefit											-9,387	[2]	-16,995	[2]	-18,319	[2]
Net income	13,054		11,595	3,752	8,479	9,402		6,978	1,290	4,277	36,879		21,947		28,251
kaleo
Assets
Cash and cash equivalents	117,589					33,560					117,589		33,560
Restricted cash	14,498					0					14,498		0
Other current assets	17,916					5,682					17,916		5,682
Net property, plant and equipment	10,824					10,559					10,824		10,559
Patents	2,702					2,433					2,702		2,433
Other assets and deferred charges	2,857					445					2,857		445
Total assets	166,386					52,679					166,386		52,679
Liabilities and Shareholders’ Equity
Long-term debt, net of discount, current portion	0					5,414					0		5,414
Other current liabilities	8,123					4,845					8,123		4,845
Liabilities, Other than Long-term Debt, Noncurrent	1,247					3,098					1,247		3,098
Long-term debt, net of discount	149,471					9,372					149,471		9,372
Redeemable preferred stock	22,946					21,970					22,946		21,970
Equity	-15,401					7,980					-15,401		7,980
Total liabilities and shareholders’ equity	166,386					52,679					166,386		52,679
Revenues & Expenses:
Revenues											21,156		15,305		38,179
Cost of goods sold											3,801		0		0
Expenses and other, net											48,447		18,631		13,073
Income tax (expense) benefit											8,100		1,586		-9,642
Net income											($22,992)		($1,740)		$15,464
[1]	Information on exports and foreign operations are provided on the previous page. Cash and cash equivalents includes funds held in locations outside the U.S. of $40.5 million and $38.6 million at December 31, 2014 and 2013, respectively. Export sales relate almost entirely to Film Products. Operations outside the U.S. in The Netherlands, Hungary, China, Brazil and India also relate to Film Products. Sales from locations in The Netherlands and Hungary are primarily to customers located in Europe. Sales from locations in China (Guangzhou and Shanghai) are primarily to customers located in China, but also include other customers in Asia.
[2]	See Notes 1, 3, 4 and 18 for more information on losses associated with plant shutdowns, asset impairments and restructurings, unusual items, gains or losses from sale of assets, gains or losses on an investment accounted for under the fair value method and other items.

Business_Segments_Narrative_De

Business Segments (Narrative) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Segment Reporting Information [Line Items]
Net Sales	$923,033	[1],[2]	$930,721	[1],[2]	$857,342	[1],[2]
Film Products
Segment Reporting Information [Line Items]
Net Sales	578,687		621,239		611,877
Film Products | The Procter And Gamble Company
Segment Reporting Information [Line Items]
Net Sales	$220,800		$261,900		$264,000
[1]	The difference between total consolidated sales as reported in the consolidated statements of income and segment, geographic and product group net sales reported in this note is freight of $28.8 million in 2014, $28.6 million in 2013 and $24.8 million in 2012.
[2]	Information on exports and foreign operations are provided on the previous page. Cash and cash equivalents includes funds held in locations outside the U.S. of $40.5 million and $38.6 million at December 31, 2014 and 2013, respectively. Export sales relate almost entirely to Film Products. Operations outside the U.S. in The Netherlands, Hungary, China, Brazil and India also relate to Film Products. Sales from locations in The Netherlands and Hungary are primarily to customers located in Europe. Sales from locations in China (Guangzhou and Shanghai) are primarily to customers located in China, but also include other customers in Asia.

Business_Segments_Schedule_Of_

Business Segments (Schedule Of Segment Reporting Information By Segment) (Details) (USD $)	3 Months Ended										12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014		Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013		Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Revenue from External Customer [Line Items]
Total net sales											$923,033	[1],[2]	$930,721	[1],[2]	$857,342	[1],[2]
Add back freight											28,793		28,625		24,846
Sales as shown in consolidated statements of income	239,219		240,429	236,965	235,213	231,096		243,194	243,530	241,526	951,826		959,346		882,188
Total											69,915		85,838		73,451
Interest income											588		594		418
Interest expense											2,713		2,870		3,590
Gain (loss) on investment accounted for under the fair value method											2,000		3,400		16,100
Stock option-based compensation expense											1,272		1,155		1,432
Corporate expenses, net											24,310	[3]	31,857	[3]	23,443	[3]
Income from continuing operations before income taxes											45,416		52,932		61,504
Income taxes											9,387	[3]	16,995	[3]	18,319	[3]
Income from continuing operations	13,054		10,745	3,752	8,479	9,402		7,428	9,590	9,517	36,029		35,937		43,185
Income (loss) from discontinued operations	0		850	0	0	0		-450	-8,300	-5,240	850	[3]	-13,990	[3]	-14,934	[3]
Net income	13,054		11,595	3,752	8,479	9,402		6,978	1,290	4,277	36,879		21,947		28,251
Freight											28,793		28,625		24,846
Cash and cash equivalents	50,056	[2]				52,617	[2]				50,056	[2]	52,617	[2]	48,822		68,939
Foreign Country
Revenue from External Customer [Line Items]
Cash and cash equivalents	40,500					38,600					40,500		38,600
Pension Benefits
Revenue from External Customer [Line Items]
Defined benefit pension plan net liability	-96,409					-42,461					-96,409		-42,461
kaleo
Revenue from External Customer [Line Items]
Gain (loss) on investment accounted for under the fair value method											2,000	[3]	3,400	[3]	16,100	[3]
Income taxes											-8,100		-1,586		9,642
Net income											-22,992		-1,740		15,464
Cash and cash equivalents	117,589					33,560					117,589		33,560
Alleghany and Bath County, Virginia
Revenue from External Customer [Line Items]
Gain (Loss) on Disposition of Assets											1,208		0		0
Unrealized Gain (Loss) on Investment Property											0		1,018		0
Aluminum Extrusions
Revenue from External Customer [Line Items]
Total net sales											344,346		309,482		245,465
Ongoing operations											25,664		18,291		9,037
Plant shutdowns, asset impairments, restructurings and other											-976	[3]	-2,748	[3]	-5,427	[3]
Film Products
Revenue from External Customer [Line Items]
Total net sales											578,687		621,239		611,877
Ongoing operations											58,054		70,966		69,950
Plant shutdowns, asset impairments, restructurings and other											($12,827)	[3]	($671)	[3]	($109)	[3]
[1]	The difference between total consolidated sales as reported in the consolidated statements of income and segment, geographic and product group net sales reported in this note is freight of $28.8 million in 2014, $28.6 million in 2013 and $24.8 million in 2012.
[2]	Information on exports and foreign operations are provided on the previous page. Cash and cash equivalents includes funds held in locations outside the U.S. of $40.5 million and $38.6 million at December 31, 2014 and 2013, respectively. Export sales relate almost entirely to Film Products. Operations outside the U.S. in The Netherlands, Hungary, China, Brazil and India also relate to Film Products. Sales from locations in The Netherlands and Hungary are primarily to customers located in Europe. Sales from locations in China (Guangzhou and Shanghai) are primarily to customers located in China, but also include other customers in Asia.
[3]	See Notes 1, 3, 4 and 18 for more information on losses associated with plant shutdowns, asset impairments and restructurings, unusual items, gains or losses from sale of assets, gains or losses on an investment accounted for under the fair value method and other items.

Business_Segments_Schedule_Of_1

Business Segments (Schedule Of Identifiable Assets) (Details) (USD $)	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012	Dec. 31, 2011
In Thousands, unless otherwise specified
Revenue from External Customer [Line Items]
Identifiable Assets, Total	$788,626	[1]	$793,008	[1]
Cash and cash equivalents	50,056	[1]	52,617	[1]	48,822	68,939
General Corporate
Revenue from External Customer [Line Items]
Identifiable Assets, Total	49,032	[1],[2]	48,590	[1],[2]
Subtotal
Revenue from External Customer [Line Items]
Identifiable Assets, Total	689,538		691,801
Aluminum Extrusions
Revenue from External Customer [Line Items]
Identifiable Assets, Total	143,328		134,928
Film Products
Revenue from External Customer [Line Items]
Identifiable Assets, Total	$546,210		$556,873
[1]	Information on exports and foreign operations are provided on the previous page. Cash and cash equivalents includes funds held in locations outside the U.S. of $40.5 million and $38.6 million at December 31, 2014 and 2013, respectively. Export sales relate almost entirely to Film Products. Operations outside the U.S. in The Netherlands, Hungary, China, Brazil and India also relate to Film Products. Sales from locations in The Netherlands and Hungary are primarily to customers located in Europe. Sales from locations in China (Guangzhou and Shanghai) are primarily to customers located in China, but also include other customers in Asia.
[2]	The balance sheets include the funded status of each of the Company’s defined benefit pension and other postretirement plans. The funded status of the Company’s defined benefit pension plan was a net liability of $96.4 million and $42.5 million as of December 31, 2014 and 2013, respectively. See Note 14 for more information on the Company’s pension and other postretirement plans.

Business_Segments_Schedule_Of_2

Business Segments (Schedule Of Depreciation And Amortization, Capital Expenditures) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting Information [Line Items]
Depreciation and Amortization	$40,818	$44,655	$49,269
Capital Expenditures	44,898	79,661	33,252
Continuing Operations
Segment Reporting Information [Line Items]
Depreciation and Amortization	40,818	44,655	49,259
Capital Expenditures	44,898	79,661	33,252
Discontinued Operations
Segment Reporting Information [Line Items]
Depreciation and Amortization	0	0	10
Capital Expenditures			0
Film Products
Segment Reporting Information [Line Items]
Depreciation and Amortization	30,730	35,332	39,202
Capital Expenditures	38,806	64,867	30,484
Aluminum Extrusions
Segment Reporting Information [Line Items]
Depreciation and Amortization	9,974	9,202	9,984
Capital Expenditures	6,092	14,742	2,332
Subtotal
Segment Reporting Information [Line Items]
Depreciation and Amortization	40,704	44,534	49,186
Capital Expenditures	44,898	79,609	32,816
General Corporate
Segment Reporting Information [Line Items]
Depreciation and Amortization	114	121	73
Capital Expenditures	$0	$52	$436

Business_Segments_Schedule_Of_3

Business Segments (Schedule Of Net Sales By Geographic Area) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Segment Reporting Information [Line Items]
Net Sales by Geographic Area, Total	$923,033	[1],[2]	$930,721	[1],[2]	$857,342	[1],[2]
United States
Segment Reporting Information [Line Items]
Net Sales by Geographic Area, Total	542,395	[2]	534,346	[2]	480,041	[2]
Exports From The United States | Asia
Segment Reporting Information [Line Items]
Net Sales by Geographic Area, Total	72,597	[2]	82,235	[2]	57,639	[2]
Exports From The United States | Canada
Segment Reporting Information [Line Items]
Net Sales by Geographic Area, Total	47,391	[2]	46,481	[2]	46,948	[2]
Exports From The United States | Europe
Segment Reporting Information [Line Items]
Net Sales by Geographic Area, Total	10,874	[2]	6,984	[2]	5,186	[2]
Exports From The United States | Latin America
Segment Reporting Information [Line Items]
Net Sales by Geographic Area, Total	3,116	[2]	3,505	[2]	3,145	[2]
Operations Outside The United States | Brazil
Segment Reporting Information [Line Items]
Net Sales by Geographic Area, Total	97,954	[2]	109,415	[2]	121,373	[2]
Operations Outside The United States | The Netherlands
Segment Reporting Information [Line Items]
Net Sales by Geographic Area, Total	74,329	[2]	68,471	[2]	67,758	[2]
Operations Outside The United States | Hungary
Segment Reporting Information [Line Items]
Net Sales by Geographic Area, Total	39,457	[2]	43,482	[2]	41,285	[2]
Operations Outside The United States | China
Segment Reporting Information [Line Items]
Net Sales by Geographic Area, Total	26,109	[2]	28,702	[2]	30,636	[2]
Operations Outside The United States | India
Segment Reporting Information [Line Items]
Net Sales by Geographic Area, Total	$8,811	[2]	$7,100	[2]	$3,331	[2]
[1]	The difference between total consolidated sales as reported in the consolidated statements of income and segment, geographic and product group net sales reported in this note is freight of $28.8 million in 2014, $28.6 million in 2013 and $24.8 million in 2012.
[2]	Information on exports and foreign operations are provided on the previous page. Cash and cash equivalents includes funds held in locations outside the U.S. of $40.5 million and $38.6 million at December 31, 2014 and 2013, respectively. Export sales relate almost entirely to Film Products. Operations outside the U.S. in The Netherlands, Hungary, China, Brazil and India also relate to Film Products. Sales from locations in The Netherlands and Hungary are primarily to customers located in Europe. Sales from locations in China (Guangzhou and Shanghai) are primarily to customers located in China, but also include other customers in Asia.

Business_Segments_Schedule_Of_4

Business Segments (Schedule Of Identifiable Assets By Geographic Area, Property, Plant & Equipment, Net By Geographic Area) (Details) (USD $)	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012	Dec. 31, 2011
In Thousands, unless otherwise specified
Segment Reporting Information [Line Items]
Identifiable Assets by Geographic Area, Total	$788,626	[1]	$793,008	[1]
Cash and cash equivalents	50,056	[1]	52,617	[1]	48,822	68,939
Property, Plant & Equipment, Net by Geographic Area, Total	269,957		282,560
Property, Plant & Equipment, Net of Discontinued operations by Geographic Area, Total	269,957	[1]	282,560	[1]
United States
Segment Reporting Information [Line Items]
Identifiable Assets by Geographic Area, Total	409,272	[1],[2]	419,234	[1],[2]
Property, Plant & Equipment, Net by Geographic Area, Total	115,189	[1],[2]	141,444	[1],[2]
General Corporate
Segment Reporting Information [Line Items]
Identifiable Assets by Geographic Area, Total	49,032	[1],[2]	48,590	[1],[2]
Property, Plant & Equipment, Net by Geographic Area, Total	1,040	[1],[2]	1,090	[1],[2]
Operations Outside The United States | Brazil
Segment Reporting Information [Line Items]
Identifiable Assets by Geographic Area, Total	212,186	[1]	191,415	[1]
Property, Plant & Equipment, Net by Geographic Area, Total	119,066	[1]	99,956	[1]
Operations Outside The United States | The Netherlands
Segment Reporting Information [Line Items]
Identifiable Assets by Geographic Area, Total	23,729	[1]	32,156	[1]
Property, Plant & Equipment, Net by Geographic Area, Total	9,117	[1]	14,172	[1]
Operations Outside The United States | China
Segment Reporting Information [Line Items]
Identifiable Assets by Geographic Area, Total	23,037	[1]	25,165	[1]
Property, Plant & Equipment, Net by Geographic Area, Total	14,141	[1]	14,430	[1]
Operations Outside The United States | Hungary
Segment Reporting Information [Line Items]
Identifiable Assets by Geographic Area, Total	13,440	[1]	17,681	[1]
Property, Plant & Equipment, Net by Geographic Area, Total	5,829	[1]	7,461	[1]
Operations Outside The United States | India
Segment Reporting Information [Line Items]
Identifiable Assets by Geographic Area, Total	7,874	[1]	6,150	[1]
Property, Plant & Equipment, Net by Geographic Area, Total	$5,575	[1]	$4,007	[1]
[1]	Information on exports and foreign operations are provided on the previous page. Cash and cash equivalents includes funds held in locations outside the U.S. of $40.5 million and $38.6 million at December 31, 2014 and 2013, respectively. Export sales relate almost entirely to Film Products. Operations outside the U.S. in The Netherlands, Hungary, China, Brazil and India also relate to Film Products. Sales from locations in The Netherlands and Hungary are primarily to customers located in Europe. Sales from locations in China (Guangzhou and Shanghai) are primarily to customers located in China, but also include other customers in Asia.
[2]	The balance sheets include the funded status of each of the Company’s defined benefit pension and other postretirement plans. The funded status of the Company’s defined benefit pension plan was a net liability of $96.4 million and $42.5 million as of December 31, 2014 and 2013, respectively. See Note 14 for more information on the Company’s pension and other postretirement plans.

Business_Segments_Schedule_Of_5

Business Segments (Schedule Of Net Sales By Product Group) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Revenue from External Customer [Line Items]
Net Sales by Product Group	$923,033	[1],[2]	$930,721	[1],[2]	$857,342	[1],[2]
Film Products
Revenue from External Customer [Line Items]
Net Sales by Product Group	578,687		621,239		611,877
Aluminum Extrusions
Revenue from External Customer [Line Items]
Net Sales by Product Group	344,346		309,482		245,465
Personal care materials | Film Products
Revenue from External Customer [Line Items]
Net Sales by Product Group	317,080		339,559		327,161
Flexible packaging films | Film Products
Revenue from External Customer [Line Items]
Net Sales by Product Group	114,348		125,712		138,028
Surface protection films | Film Products
Revenue from External Customer [Line Items]
Net Sales by Product Group	90,129		90,182		69,627
Polyethylene overwrap and polypropylene films | Film Products
Revenue from External Customer [Line Items]
Net Sales by Product Group	44,263		56,590		63,796
Films for other markets | Film Products
Revenue from External Customer [Line Items]
Net Sales by Product Group	12,867		9,196		13,265
Subtotal | Film Products
Revenue from External Customer [Line Items]
Net Sales by Product Group	578,687		621,239		611,877
Nonresidential building & construction | Aluminum Extrusions
Revenue from External Customer [Line Items]
Net Sales by Product Group	200,707		179,437		165,159
Consumer durables | Aluminum Extrusions
Revenue from External Customer [Line Items]
Net Sales by Product Group	44,897		39,565		12,259
Residential building & construction | Aluminum Extrusions
Revenue from External Customer [Line Items]
Net Sales by Product Group	21,470		22,055		23,555
Machinery & equipment | Aluminum Extrusions
Revenue from External Customer [Line Items]
Net Sales by Product Group	26,907		21,936		8,773
Automotive | Aluminum Extrusions
Revenue from External Customer [Line Items]
Net Sales by Product Group	22,272		19,919		11,757
Distribution | Aluminum Extrusions
Revenue from External Customer [Line Items]
Net Sales by Product Group	15,318		13,115		15,227
Electrical | Aluminum Extrusions
Revenue from External Customer [Line Items]
Net Sales by Product Group	12,775		13,455		8,735
Subtotal | Aluminum Extrusions
Revenue from External Customer [Line Items]
Net Sales by Product Group	$344,346		$309,482		$245,465
[1]	The difference between total consolidated sales as reported in the consolidated statements of income and segment, geographic and product group net sales reported in this note is freight of $28.8 million in 2014, $28.6 million in 2013 and $24.8 million in 2012.
[2]	Information on exports and foreign operations are provided on the previous page. Cash and cash equivalents includes funds held in locations outside the U.S. of $40.5 million and $38.6 million at December 31, 2014 and 2013, respectively. Export sales relate almost entirely to Film Products. Operations outside the U.S. in The Netherlands, Hungary, China, Brazil and India also relate to Film Products. Sales from locations in The Netherlands and Hungary are primarily to customers located in Europe. Sales from locations in China (Guangzhou and Shanghai) are primarily to customers located in China, but also include other customers in Asia.

Accounts_And_Other_Receivables2

Accounts And Other Receivables (Schedule Of Accounts And Other Receivable) (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Accounts and Notes Receivable, Net [Abstract]
Trade, less allowance for doubtful accounts and sales returns of $2,610 in 2014 and $3,327 in 2013	$106,093	$94,684
Other	7,248	4,562
Total	113,341	99,246
Allowance for Doubtful Accounts and Sales Returns	$2,610	$3,327

Accounts_And_Other_Receivables3

Accounts And Other Receivables (Schedule Of Reconciliation Of The Beginning And Ending Balances Of The Allowance For Doubtful Accounts And Sales Returns) (Details) (Allowance For Doubtful Accounts, USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Allowance For Doubtful Accounts
Allowance for Doubtful Accounts Receivable [Roll Forward]
Balance, beginning of year	$3,327	$3,552	$3,539
Charges to expense	1,344	1,874	1,589
Recoveries	-1,654	-1,760	-1,076
Write-offs	-153	-285	-588
Foreign exchange and other	-254	-54	88
Balance, end of year	$2,610	$3,327	$3,552

Inventories_Narrative_Details

Inventories (Narrative) (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Inventories [Line Items]
Inventories stated on the LIFO basis	$12.20	$10
Inventories stated value below replacement costs	18.3	15.8
Cost of goods sold stated at below current replacement costs			2.7
Film Products
Inventories [Line Items]
Cost of goods sold stated at below current replacement costs	1	0.9	1.1
Aluminum Extrusions
Inventories [Line Items]
Cost of goods sold stated at below current replacement costs			$1.60

Inventories_Schedule_Of_Invent

Inventories (Schedule Of Inventories) (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Inventory, Net [Abstract]
Finished goods	$17,559	$14,953
Work-in-process	10,089	7,750
Raw materials	25,227	24,477
Stores, supplies and other	21,433	23,483
Total	$74,308	$70,663

Goodwill_And_Other_Intangible_2

Goodwill And Other Intangible Assets (Narrative) (Details) (USD $)	3 Months Ended
	Mar. 31, 2009	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Goodwill [Line Items]
Goodwill impairment charge	$30,600,000
Goodwill impairment charge, after taxes	30,600,000
Goodwill		169,687,000	172,788,000	176,620,000	165,372,000
Film Products
Goodwill [Line Items]
Goodwill		156,000,000
Aluminum Extrusions
Goodwill [Line Items]
Goodwill		$13,700,000

Goodwill_And_Other_Intangible_3

Goodwill And Other Intangible Assets (Schedule Of Goodwill And Other Intangibles) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Goodwill And Other Intangible Assets [Line Items]
Goodwill	$169,687	$172,788	$176,620	$165,372
Identifiable intangible assets:
Total carrying value of other intangibles	45,442	53,512
Intangible Assets, Net (Including Goodwill)	215,129	226,300
Customer relationships
Identifiable intangible assets:
Other identifiable intangibles	21,620	25,962
Other identifiable intangibles, cost basis	29,117	31,357
Proprietary technology
Identifiable intangible assets:
Other identifiable intangibles	11,824	14,356
Other identifiable intangibles, cost basis	18,228	18,851
Noncompete agreements
Identifiable intangible assets:
Other identifiable intangibles	0	600
Identifiable Intangible Asset, Useful Life (Yrs)	2 years
Other identifiable intangibles, cost basis	4,154	4,154
Trade names
Identifiable intangible assets:
Trade names	$11,998	$12,594
Minimum | Customer relationships
Identifiable intangible assets:
Identifiable Intangible Asset, Useful Life (Yrs)	10 years
Maximum | Customer relationships
Identifiable intangible assets:
Identifiable Intangible Asset, Useful Life (Yrs)	12 years
Maximum | Proprietary technology
Identifiable intangible assets:
Identifiable Intangible Asset, Useful Life (Yrs)	15 years

Goodwill_And_Other_Intangible_4

Goodwill And Other Intangible Assets (Reconciliation Of The Beginning And Ending Balance Of Goodwill) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Goodwill [Roll Forward]
Net carrying value of goodwill, beginning of year	$172,788	$176,620	$165,372
Acquisitions	0	0	13,695
Increase (decrease) due to foreign currency translation	-3,101	-3,832	-2,447
Net carrying value of goodwill, end of year	$169,687	$172,788	$176,620

Goodwill_And_Other_Intangible_5

Goodwill And Other Intangible Assets (Schedule of Expected Amortization Expense) (Details) (USD $)	Dec. 31, 2014
In Thousands, unless otherwise specified
Goodwill and Intangible Assets Disclosure [Abstract]
2014	$4,741
2015	4,702
2016	4,702
2017	4,702
2018	$4,568

Financial_Instruments_Narrativ

Financial Instruments (Narrative) (Details)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2013
	USD ($)	lb	Aluminum Futures Contracts	Aluminum Futures Contracts	Film Products
	lb		USD ($)	USD ($)	EUR (€)
Derivative [Line Items]
Notional amount			$8.60	$8	€ 2.10
Weight of aluminum that hedged future purchase of aluminum to meet fixed-price forward sales contract obligations, lbs	7,800,000	8,400,000
Amounts of unrealized after-tax gains on derivative instruments	$0.20

Financial_Instruments_Summary_

Financial Instruments (Summary Of Location And Fair Value Of Derivative Financial Instruments) (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Foreign Currency Forward Contracts | Designated as Hedging Instrument | Prepaid Expenses And Other [Member]
Derivatives, Fair Value [Line Items]
Asset derivatives	$0	$47
Net asset (liability)	0	47
Aluminum Futures Contracts | Designated as Hedging Instrument | Accrued Expenses
Derivatives, Fair Value [Line Items]
Asset derivatives	82	31
Liability derivatives: Aluminum futures contracts	-318	-178
Net asset (liability)	-236	-147
Aluminum Futures Contracts | Not Designated as Hedging Instrument [Member] | Accrued Expenses
Derivatives, Fair Value [Line Items]
Asset derivatives	7	0
Liability derivatives: Aluminum futures contracts	($7)	$0

Financial_Instruments_Schedule

Financial Instruments (Schedule Of Pretax Effect On Net Income (Loss) And Other Comprehensive Income (Loss) Of Derivative Instruments Classified As Cash Flow Hedges) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Foreign Currency Forwards And Options [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of pre-tax gain (loss) recognized in other comprehensive income	($120)	($77)	$1,421
Foreign Currency Forwards And Options [Member] | Cost of Sales
Derivative Instruments, Gain (Loss) [Line Items]
Amount of pre-tax gain (loss) reclassified from accumulated other comprehensive income to net income (effective portion)	16	0	0
Aluminum Futures Contracts
Derivative Instruments, Gain (Loss) [Line Items]
Amount of pre-tax gain (loss) recognized in other comprehensive income	542	-868	-232
Aluminum Futures Contracts | Cost of Sales
Derivative Instruments, Gain (Loss) [Line Items]
Amount of pre-tax gain (loss) reclassified from accumulated other comprehensive income to net income (effective portion)	$631	($583)	($1,026)

Accrued_Expenses_Schedule_Of_A

Accrued Expenses (Schedule Of Accrued Expenses) (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Accrued Liabilities [Abstract]
Vacation	$7,266	$7,077
Payrolls, related taxes and medical and other benefits	4,119	5,679
Incentive compensation	3,803	4,148
Workers’ compensation and disabilities	3,007	2,753
Accrued Utilities, Current	2,186	2,494
Contractual indemnification claims	0	2,604
Taxes other than federal income and payroll	841	2,153
Other	10,827	15,250
Total	$32,049	$42,158

Accrued_Expenses_Schedule_Of_R

Accrued Expenses (Schedule Of Reconciliation Of Beginning And Ending Balances Of Accrued Expenses Associated With Asset Impairments And Costs Associated With Exit And Disposal Activities) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Restructuring Reserve [Roll Forward]
Beginning balance	$687		$881		$197
Charges	3,026		1,412		4,894
Cash spend	-3,039		-1,434		-3,133
Charges against assets	-227		-172		-1,077
Ending balance	447		687		881
Severance
Restructuring Reserve [Roll Forward]
Beginning balance	331		296		197
Charges	2,668		671		1,562
Cash spend	-2,753		-636		-1,463
Ending balance	246		331		296
Asset Impairments
Restructuring Reserve [Roll Forward]
Beginning balance	0		0		0
Charges	227		172		1,077
Charges against assets	-227		-172		-1,077
Ending balance	0		0		0
Other
Restructuring Reserve [Roll Forward]
Beginning balance	356	[1]	585	[1]	0	[1]
Charges	131	[1]	569	[1]	2,255	[1]
Cash spend	-286	[1]	-798	[1]	-1,670	[1]
Ending balance	$201	[1]	$356	[1]	$585	[1]
[1]	Other includes other shutdown-related costs associated with the shutdown of the Company’s aluminum extrusions manufacturing facility in Kentland, Indiana.

Debt_And_Credit_Agreements_Nar

Debt And Credit Agreements (Narrative) (Details) (USD $)	12 Months Ended	0 Months Ended
	Dec. 31, 2014	Apr. 23, 2012
Line of Credit Facility [Line Items]
Credit spread over LIBOR, basis points	1.75%
Line of credit facility, covenant terms, maximum debt to EBITDA ratio	3
Line of credit facility, covenant terms, minimum adjusted EBIT-to-interest expense ratio	2.5
Line of credit facility, covenant terms, maximum aggregate distributions	$100,000,000
Line of credit facility, covenant terms, percentage of distributions to net income	50.00%
Line of credit facility, covenant terms, minimum shareholders' equity	320,000,000
Line of credit facility, covenant terms, percentage of shareholders' equity to net income	50.00%
Available credit under the Credit Agreement	155,000,000
Unsecured Revolving Credit Facility
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity		350,000,000
Line of credit facility, term		5 years
Line of credit facility, option to increase additional amount		75,000,000
Amount borrowed under the Credit Agreement		102,000,000
Previous Unsecured Revolving Credit Facility
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity		$300,000,000
Line of credit facility, term		4 years

Debt_And_Credit_Agreements_Sch

Debt And Credit Agreements (Schedule Of Borrowings Under Credit Agreement At Various Indebtedness To Adjusted EBITDA Levels) (Details)	12 Months Ended
	Dec. 31, 2014
Line of Credit Facility [Line Items]
Credit Spread Over LIBOR	1.75%
Indebtedness-To-Adjusted EBITDA Ratio Greater Than 2.0x But Less Than Or Equal To 3.0x [Member]
Line of Credit Facility [Line Items]
Credit Spread Over LIBOR	2.00%
Commitment Fee	0.35%
Indebtedness-To-Adjusted EBITDA Ratio Greater Than 1.0x But Less Than Or Equal To 2.0x [Member]
Line of Credit Facility [Line Items]
Credit Spread Over LIBOR	1.75%
Commitment Fee	0.30%
Indebtedness-To-Adjusted EBITDA Ratio Less Than Or Equal To 1.0x [Member]
Line of Credit Facility [Line Items]
Indebtedness-to-Adjusted EBITDA Ratio	1
Credit Spread Over LIBOR	1.50%
Commitment Fee	0.25%
Minimum | Indebtedness-To-Adjusted EBITDA Ratio Greater Than 2.0x But Less Than Or Equal To 3.0x [Member]
Line of Credit Facility [Line Items]
Indebtedness-to-Adjusted EBITDA Ratio	2
Minimum | Indebtedness-To-Adjusted EBITDA Ratio Greater Than 1.0x But Less Than Or Equal To 2.0x [Member]
Line of Credit Facility [Line Items]
Indebtedness-to-Adjusted EBITDA Ratio	1
Maximum | Indebtedness-To-Adjusted EBITDA Ratio Greater Than 2.0x But Less Than Or Equal To 3.0x [Member]
Line of Credit Facility [Line Items]
Indebtedness-to-Adjusted EBITDA Ratio	3
Maximum | Indebtedness-To-Adjusted EBITDA Ratio Greater Than 1.0x But Less Than Or Equal To 2.0x [Member]
Line of Credit Facility [Line Items]
Indebtedness-to-Adjusted EBITDA Ratio	2

Debt_And_Credit_Agreements_Sum

Debt And Credit Agreements (Summary Of Total Debt Due And Outstanding) (Details) (USD $)	Dec. 31, 2014
In Thousands, unless otherwise specified
Maturities of Total Debt
2017	$137,250
2018	0
2019	0
Total	137,250
Credit Agreement
Maturities of Total Debt
2016	0
2017	137,250
Total	$137,250

Shareholder_Rights_Agreement_N

Shareholder Rights Agreement (Narrative) (Details) (USD $)	0 Months Ended	12 Months Ended
	Feb. 19, 2014	Dec. 31, 2014
Warrants and Rights Note Disclosure [Abstract]
Exercise price of participating cumulative preferred stock, per share		$150
Percentage of outstanding common stock shares to be acquired for exercise of rights (more than)		20.00%
Share-Based Compensation Arrangement by Share-based Payment Award, Price Per RIght Redeemed by Board of DIrectors in Event Agreement is Not Approved	$0.01
Shareholder Rights Redemption Payment		$323,000

Stock_Option_And_Stock_Award_P2

Stock Option And Stock Award Plans (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number	1,164,120	1,046,800	1,076,700	1,121,500
Options may be granted to purchase specified number of common shares under stock option plan, maximum term	10 years
The total intrinsic value of stock options exercised	$100,000	$1,300,000	$500,000
The grant-date fair value of stock option-based awards vested	700,000	1,700,000	2,100,000
Stock options exercisable	800,050	769,825
Total stock options available for grant	2,198,235
Restricted Stock
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Option vesting period	3 years
Stock Option-Based Awards
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Unrecognized compensation cost	1,300,000
Weighted average period for the cost expected to be recognized	1 year 4 months 26 days
Non-Vested Restricted Stock And Other Stock-Based Awards
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Unrecognized compensation cost	$2,300,000
Weighted average period for the cost expected to be recognized	1 year 4 months 26 days
Granted Prior To 2012 | Employee Options
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Option vesting period				2 years
Granted In 2012 And Thereafter | Employee Options
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Option vesting period	4 years
Minimum
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Share Based Compensation Arrangement By Share Based Payment Award, Options, Outstanding, Exercise Price	$14.06	$14.06	$14.06	14.06

Stock_Option_And_Stock_Award_P3

Stock Option And Stock Award Plans (Summary Of Stock Options Outstanding) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Number of Options
Number of Options, Outstanding, Beginning Balance	1,046,800	1,076,700	1,121,500
Number of Options, Granted	181,476	184,700	182,100
Number of Options, Forfeited and Expired	-22,581	-34,000	-50,300
Number of Options, Exercised	-41,575	-180,600	-176,600
Number of Options, Outstanding, Ending Balance	1,164,120	1,046,800	1,076,700
Weighted Average
Weighted Average Option Exercise Price/Share, Outstanding, Beginning Balance	$19.06	$17.81	$17.40
Weighted Average Option Exercise Price/Share, Granted	$22.41	$24.97	$19.34
Weighted Average Option Exercise Price/Share, Forfeited and Expired	$21.42	$21.10	$19.34
Weighted Average Option Exercise Price/Share, Exercised	$17.55	$17.32	$16.33
Weighted Average Option Exercise Price/Share, Outstanding, Ending Balance	$19.59	$19.06	$17.81
Minimum
Option Exercise Price/Share Range
Exercise Price, Outstanding, Beginning Balance	$14.06	$14.06	$14.06
Exercise Price, Granted	$19.84	$24.84	$18.51
Exercise Price, Forfeited and Expired	$15.80	$15.11	$15.80
Exercise Price, Exercised	$15.80	$14.27	$14.72
Exercise Price, Outstanding, Ending Balance	$14.06	$14.06	$14.06
Maximum
Option Exercise Price/Share Range
Exercise Price, Outstanding, Beginning Balance	$30.01	$19.84	$19.84
Exercise Price, Granted	$22.49	$30.01	$19.40
Exercise Price, Forfeited and Expired	$24.84	$24.84	$19.84
Exercise Price, Exercised	$19.84	$19.84	$18.12
Exercise Price, Outstanding, Ending Balance	$30.01	$30.01	$19.84

Stock_Option_And_Stock_Award_P4

Stock Option And Stock Award Plans (Summary Of Additional Information On Stock Options Outstanding And Exercisable) (Details) (USD $)	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2014
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding, Shares	1,164,120
Options Outstanding, Weighted Average, Remaining Contractual Life (Years)	4 years 2 months 14 days
Options Outstanding, Weighted Average, Exercise Price	$19.59
Options Outstanding, Aggregate Intrinsic Value	$3,785
Options Exercisable, Shares	800,050
Options Exercisable, Weighted Average Exercise Price	$18.17
Options Exercisable, Aggregate Intrinsic Value	3,562
- To 15.00
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices, Minimum	$0
Range of Exercise Prices, Maximum	$15
Options Outstanding, Shares	26,000
Options Outstanding, Weighted Average, Remaining Contractual Life (Years)	0 years 10 months 24 days
Options Outstanding, Weighted Average, Exercise Price	$14.06
Options Outstanding, Aggregate Intrinsic Value	219
Options Exercisable, Shares	26,000
Options Exercisable, Weighted Average Exercise Price	$14.06
Options Exercisable, Aggregate Intrinsic Value	219
15.01 To 17.00
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices, Minimum	$15.01
Range of Exercise Prices, Maximum	$17.50
Options Outstanding, Shares	314,500
Options Outstanding, Weighted Average, Remaining Contractual Life (Years)	1 year 2 months 13 days
Options Outstanding, Weighted Average, Exercise Price	$16.53
Options Outstanding, Aggregate Intrinsic Value	1,873
Options Exercisable, Shares	314,500
Options Exercisable, Weighted Average Exercise Price	$16.53
Options Exercisable, Aggregate Intrinsic Value	1,873
17.51 To 20.00
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices, Minimum	$17.51
Range of Exercise Prices, Maximum	$20
Options Outstanding, Shares	488,870
Options Outstanding, Weighted Average, Remaining Contractual Life (Years)	3 years 3 months 19 days
Options Outstanding, Weighted Average, Exercise Price	$19.03
Options Outstanding, Aggregate Intrinsic Value	1,693
Options Exercisable, Shares	417,550
Options Exercisable, Weighted Average Exercise Price	$18.97
Options Exercisable, Aggregate Intrinsic Value	1,470
20.01 To 25.00
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices, Minimum	$20.01
Range of Exercise Prices, Maximum	$25
Options Outstanding, Shares	330,250
Options Outstanding, Weighted Average, Remaining Contractual Life (Years)	8 years 8 months 12 days
Options Outstanding, Weighted Average, Exercise Price	$23.61
Options Outstanding, Aggregate Intrinsic Value	0
Options Exercisable, Shares	40,875
Options Exercisable, Weighted Average Exercise Price	$24.84
Options Exercisable, Aggregate Intrinsic Value	0
25.01 To 30.01
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices, Minimum	$25.01
Range of Exercise Prices, Maximum	$30.01
Options Outstanding, Shares	4,500
Options Outstanding, Weighted Average, Remaining Contractual Life (Years)	8 years 7 months 7 days
Options Outstanding, Weighted Average, Exercise Price	$30.01
Options Outstanding, Aggregate Intrinsic Value	0
Options Exercisable, Shares	1,125
Options Exercisable, Weighted Average Exercise Price	$30.01
Options Exercisable, Aggregate Intrinsic Value	$0

Stock_Option_And_Stock_Award_P5

Stock Option And Stock Award Plans (Summary Of Additional Information On Non-Vested Restricted Stock Outstanding) (Details) (USD $)	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Grant Date Fair Value, Vested	($700)	($1,700)	($2,100)
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Number of Shares, Outstanding, Beginning Balance	157,850	143,900	126,150
Number of Shares, Granted	95,707	93,425	94,949
Number of Shares, Vested	-54,921	-58,175	-60,357
Number of Shares, Forfeited	-10,578	-21,300	-16,842
Number of Shares, Outstanding, Ending Balance	188,058	157,850	143,900
Wgtd. Ave. Grant Date Fair Value/Sh., Beginning Balance	$22	$18.82	$18.25
Wgtd. Ave. Grant Date Fair Value/Sh., Granted	$22.18	$25.45	$19.06
Wgtd. Ave. Grant Date Fair Value/Sh., Vested	$20.73	$20.15	$18.01
Wgtd. Ave. Grant Date Fair Value/Sh., Forfeited	$21.76	$20.70	$18.82
Wgtd. Ave. Grant Date Fair Value/Sh., Ending Balance	$22.48	$22	$18.82
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Grant Date Fair Value, Outstanding, Beginning Balance	3,473	2,708	2,302
Grant Date Fair Value, Granted	2,123	2,378	1,810
Grant Date Fair Value, Vested	-1,139	-1,172	-1,087
Grant Date Fair Value, Forfeited	-230	-441	-317
Grant Date Fair Value, Outstanding, Ending Balance	4,227	3,473	2,708
Maximum Non-Vested Restricted Stock Units Issuable Upon Satisfaction Of Certain Performance Criteria
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Number of Shares, Outstanding, Beginning Balance	132,300	91,800	85,000
Number of Shares, Granted	59,675	77,200	87,200
Number of Shares, Vested	0	0	0
Number of Shares, Forfeited	-62,262	-36,700	-80,400
Number of Shares, Outstanding, Ending Balance	129,713	132,300	91,800
Wgtd. Ave. Grant Date Fair Value/Sh., Beginning Balance	$23.81	$18.85	$19.35
Wgtd. Ave. Grant Date Fair Value/Sh., Granted	$21.54	$27.82	$18.79
Wgtd. Ave. Grant Date Fair Value/Sh., Vested	$0	$0	$0
Wgtd. Ave. Grant Date Fair Value/Sh., Forfeited	$19.18	$19.83	$19.31
Wgtd. Ave. Grant Date Fair Value/Sh., Ending Balance	$24.99	$23.81	$18.85
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Grant Date Fair Value, Outstanding, Beginning Balance	3,150	1,730	1,645
Grant Date Fair Value, Granted	1,285	2,148	1,638
Grant Date Fair Value, Vested	0	0	0
Grant Date Fair Value, Forfeited	-1,194	-728	-1,553
Grant Date Fair Value, Outstanding, Ending Balance	$3,241	$3,150	$1,730

Retirement_Plans_And_Other_Pos2

Retirement Plans And Other Postretirement Benefits (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Defined Benefit Plan Disclosure [Line Items]
Percentage of change in health care cost trend rate assumptions would be immaterial	1.00%
Expected pension expense for next twelve months	$12,300,000
Term of estimated benefit payments for fixed income securities, minimum	1 year
Term of estimated benefit payments for fixed income securities, maximum	2 years
Defined benefit, average remaining duration of benefit payments for pension plans	12 years 8 months 12 days
Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, expect to required contributions	2,400,000
Unfunded Non-Qualified Supplemental Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation to unfunded plan	2,400,000	2,400,000
Pension Expense	100,000	100,000	100,000
Films Manufacturing Facility In Kerkrade | Multiemployer Plans, Pension
Defined Benefit Plan Disclosure [Line Items]
Number of employees participating in pension plan	81
Multi-employer pension plan, pension expenses	$500,000	$500,000	$500,000

Retirement_Plans_And_Other_Pos3

Retirement Plans And Other Postretirement Benefits (Reconciliation Of Changes In Benefit Obligations And Plan Assets) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Amounts recognized in the consolidated balance sheets:
Total plan assets	$229,017	$232,705
Pension Benefits
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefit obligation, beginning of year	275,166	302,285
Service cost	869	3,754	3,657
Interest cost	13,397	12,338	13,084
Effect of actuarial (gains) losses related to the following:
Discount rate change	32,089	-26,848
Retirement rate assumptions and mortality table adjustments	17,331	-144
Effect Of Actuarial (Gains) Losses, Retiree Medical Participation Rate Change	0	0
Other	490	-3,058
Benefits paid	-13,916	-13,161
Benefit obligation, end of year	325,426	275,166	302,285
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Plan assets at fair value, beginning of year	232,705	219,035
Actual return on plan assets	7,466	21,657
Employer contributions	2,762	5,174
Benefits paid	-13,916	-13,161
Plan assets at fair value, end of year	229,017	232,705	219,035
Funded status of the plans	-96,409	-42,461
Amounts recognized in the consolidated balance sheets:
Pension and Other Postretirement Defined Benefit Plans, Liabilities, Noncurrent		42,461
Net amount recognized	96,409	42,461
Other Post-Retirement Benefits
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefit obligation, beginning of year	7,858	8,879
Service cost	43	58	58
Interest cost	387	345	385
Effect of actuarial (gains) losses related to the following:
Discount rate change	732	-746
Retirement rate assumptions and mortality table adjustments	-131	0
Effect Of Actuarial (Gains) Losses, Retiree Medical Participation Rate Change	-390	0
Other	218	-382
Benefits paid	-1,026	-979
Benefit obligation, end of year	8,372	7,858	8,879
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Plan assets at fair value, beginning of year	0	0
Actual return on plan assets	0	0
Employer contributions	345	296
Benefits paid	-1,026	-979
Plan assets at fair value, end of year	0	0	0
Funded status of the plans	-8,372	-7,858
Amounts recognized in the consolidated balance sheets:
Pension and Other Postretirement Defined Benefit Plans, Liabilities, Noncurrent	7,916	7,858
Net amount recognized	8,372	7,858
Defined Benefit Plan, Contributions by Plan Participants	681	683
Accrued Expenses | Pension Benefits
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Pension and Other Postretirement Defined Benefit Plans, Current Liabilities	130
Accrued Expenses | Other Post-Retirement Benefits
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Pension and Other Postretirement Defined Benefit Plans, Current Liabilities	456
Other Noncurrent Liabilities [Member] | Pension Benefits
Amounts recognized in the consolidated balance sheets:
Pension and Other Postretirement Defined Benefit Plans, Liabilities, Noncurrent	$96,279

Retirement_Plans_And_Other_Pos4

Retirement Plans And Other Postretirement Benefits (Components Of Net Periodic Benefit Income Or Cost For Continuing Operations) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Pension Benefits
Weighted-average assumptions used to determine benefit obligations:
Discount rate	4.17%	4.99%	4.21%
Weighted-average assumptions used to determine net periodic benefit cost:
Discount rate	4.99%	4.21%	4.95%
Expected long-term return on plan assets	7.75%	7.75%	8.00%
Components of net periodic benefit cost:
Service cost	$869	$3,754	$3,657
Interest cost	13,397	12,338	13,084
Expected return on plan assets	-18,301	-17,430	-19,108
Amortization of prior service costs and gains or losses	10,688	15,028	10,377
Settlement/curtailment	81	28	99
Net periodic benefit cost	6,734	13,718	8,109
Other Post-Retirement Benefits
Weighted-average assumptions used to determine benefit obligations:
Discount rate	4.11%	4.88%	4.10%
Weighted-average assumptions used to determine net periodic benefit cost:
Discount rate	4.88%	4.10%	4.90%
Components of net periodic benefit cost:
Service cost	43	58	58
Interest cost	387	345	385
Expected return on plan assets	0	0	0
Amortization of prior service costs and gains or losses	-190	-210	-241
Settlement/curtailment	0	0	0
Net periodic benefit cost	$240	$193	$202

Retirement_Plans_And_Other_Pos5

Retirement Plans And Other Postretirement Benefits (Schedule Of Expected Benefit Payments For Continuing Operations) (Details) (USD $)	Dec. 31, 2014
In Thousands, unless otherwise specified
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
2015	$15,282
2016	15,932
2017	16,527
2018	17,004
2019	17,555
2020-2024	93,535
Other Post-Retirement Benefits
Defined Benefit Plan Disclosure [Line Items]
2015	456
2016	471
2017	480
2018	489
2019	494
2020-2024	$2,511

Retirement_Plans_And_Other_Pos6

Retirement Plans And Other Postretirement Benefits (Schedule Of Amounts Recognized Before Related Deferred Income Taxes In Accumulated Other Comprehensive Income) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Prior service cost (benefit)	$87	$270	($887)
Net actuarial (gain) loss	166,678	116,519	167,009
Other Post-Retirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Prior service cost (benefit)	0	0	0
Net actuarial (gain) loss	($1,154)	($1,773)	($855)

Retirement_Plans_And_Other_Pos7

Retirement Plans And Other Postretirement Benefits (Schedule Of Amounts Before Related Deferred Income Taxes In Accumulated Other Comprehensive Income That Are Expected To Be Recognized As Components Of Net Periodic Benefit Or Cost) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Prior service cost (benefit)	$24
Net actuarial (gain) loss	16,107
Other Post-Retirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Prior service cost (benefit)	0
Net actuarial (gain) loss	($160)

Retirement_Plans_And_Other_Pos8

Retirement Plans And Other Postretirement Benefits (Schedule Of Percentage Composition Of Assets Held By Pension Plans) (Details)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Defined Benefit Plan Disclosure [Line Items]
% Composition of Plan Assets at December 31, Total for continuing operations	100.00%	100.00%	100.00%
Fixed income securities
Defined Benefit Plan Disclosure [Line Items]
% Composition of Plan Assets at December 31, Total for continuing operations	14.50%	14.00%	14.70%
Large/mid-capitalization equity securities
Defined Benefit Plan Disclosure [Line Items]
% Composition of Plan Assets at December 31, Total for continuing operations	13.70%	13.80%	10.90%
Small-capitalization equity securities
Defined Benefit Plan Disclosure [Line Items]
% Composition of Plan Assets at December 31, Total for continuing operations	4.30%	4.80%	5.40%
International and emerging market equity securities
Defined Benefit Plan Disclosure [Line Items]
% Composition of Plan Assets at December 31, Total for continuing operations	11.00%	11.70%	10.00%
Total equity securities
Defined Benefit Plan Disclosure [Line Items]
% Composition of Plan Assets at December 31, Total for continuing operations	29.00%	30.30%	26.30%
Private equity and hedge funds
Defined Benefit Plan Disclosure [Line Items]
% Composition of Plan Assets at December 31, Total for continuing operations	51.20%	48.30%	50.00%
Other assets
Defined Benefit Plan Disclosure [Line Items]
% Composition of Plan Assets at December 31, Total for continuing operations	5.30%	7.40%	9.00%

Retirement_Plans_And_Other_Pos9

Retirement Plans And Other Postretirement Benefits (Schedule Of Targeted Allocation Percentage For Pension Plan Assets And Expected Long-Term Rate Of Return On Assets) (Details)	12 Months Ended
	Dec. 31, 2014
Defined Benefit Plan Disclosure [Line Items]
Target % Composition of Plan Assets, Total for continuing operations	100.00%	[1]
Expected Long-term Return %, Total for continuing operations	7.50%
Fixed income securities
Defined Benefit Plan Disclosure [Line Items]
Target % Composition of Plan Assets, Total for continuing operations	32.00%	[1]
Expected Long-term Return %, Total for continuing operations	5.50%
Large/mid-capitalization equity securities
Defined Benefit Plan Disclosure [Line Items]
Target % Composition of Plan Assets, Total for continuing operations	10.00%	[1]
Expected Long-term Return %, Total for continuing operations	8.80%
Small-capitalization equity securities
Defined Benefit Plan Disclosure [Line Items]
Target % Composition of Plan Assets, Total for continuing operations	4.00%	[1]
Expected Long-term Return %, Total for continuing operations	9.90%
International and emerging market equity securities
Defined Benefit Plan Disclosure [Line Items]
Target % Composition of Plan Assets, Total for continuing operations	13.00%	[1]
Expected Long-term Return %, Total for continuing operations	9.80%
Total equity securities
Defined Benefit Plan Disclosure [Line Items]
Target % Composition of Plan Assets, Total for continuing operations	27.00%	[1]
Expected Long-term Return %, Total for continuing operations	9.40%
Private equity and hedge funds
Defined Benefit Plan Disclosure [Line Items]
Target % Composition of Plan Assets, Total for continuing operations	41.00%	[1]
Expected Long-term Return %, Total for continuing operations	7.80%
[1]	Target percentages for the composition of plan assets represents a neutral position within the approved range of allocations for such assets.

Recovered_Sheet3

Retirement Plans And Other Postretirement Benefits (Schedule Of Pension Plan Assets Categorized By Level Within Fair Value Measurement Hierarchy) (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Defined Benefit Plan Disclosure [Line Items]
Contracts with insurance companies	$10,267	$9,420
Total plan assets	229,017	232,705
Large/mid-capitalization equity securities
Defined Benefit Plan Disclosure [Line Items]
Total plan assets at fair value	31,401	32,134
Small-capitalization equity securities
Defined Benefit Plan Disclosure [Line Items]
Total plan assets at fair value	9,827	11,063
International and emerging market equity securities
Defined Benefit Plan Disclosure [Line Items]
Total plan assets at fair value	25,224	27,271
Fixed income securities
Defined Benefit Plan Disclosure [Line Items]
Total plan assets at fair value	33,281	32,601
Private equity and hedge funds
Defined Benefit Plan Disclosure [Line Items]
Total plan assets at fair value	117,276	112,345
Other assets
Defined Benefit Plan Disclosure [Line Items]
Total plan assets at fair value	1,741	7,871
Total Plan Assets at Fair Value [Member]
Defined Benefit Plan Disclosure [Line Items]
Total plan assets at fair value	218,750	223,285
Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Total plan assets at fair value	67,101	82,326
Quoted Prices in Active Markets for Identical Assets (Level 1) | Large/mid-capitalization equity securities
Defined Benefit Plan Disclosure [Line Items]
Total plan assets at fair value	31,401	32,134
Quoted Prices in Active Markets for Identical Assets (Level 1) | Small-capitalization equity securities
Defined Benefit Plan Disclosure [Line Items]
Total plan assets at fair value	9,827	11,063
Quoted Prices in Active Markets for Identical Assets (Level 1) | International and emerging market equity securities
Defined Benefit Plan Disclosure [Line Items]
Total plan assets at fair value	11,471	13,488
Quoted Prices in Active Markets for Identical Assets (Level 1) | Fixed income securities
Defined Benefit Plan Disclosure [Line Items]
Total plan assets at fair value	12,661	17,770
Quoted Prices in Active Markets for Identical Assets (Level 1) | Private equity and hedge funds
Defined Benefit Plan Disclosure [Line Items]
Total plan assets at fair value	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Other assets
Defined Benefit Plan Disclosure [Line Items]
Total plan assets at fair value	1,741	7,871
Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Total plan assets at fair value	140,574	132,145
Significant Other Observable Inputs (Level 2) | Large/mid-capitalization equity securities
Defined Benefit Plan Disclosure [Line Items]
Total plan assets at fair value	0	0
Significant Other Observable Inputs (Level 2) | Small-capitalization equity securities
Defined Benefit Plan Disclosure [Line Items]
Total plan assets at fair value	0	0
Significant Other Observable Inputs (Level 2) | International and emerging market equity securities
Defined Benefit Plan Disclosure [Line Items]
Total plan assets at fair value	13,753	13,783
Significant Other Observable Inputs (Level 2) | Fixed income securities
Defined Benefit Plan Disclosure [Line Items]
Total plan assets at fair value	20,620	14,831
Significant Other Observable Inputs (Level 2) | Private equity and hedge funds
Defined Benefit Plan Disclosure [Line Items]
Total plan assets at fair value	106,201	103,531
Significant Other Observable Inputs (Level 2) | Other assets
Defined Benefit Plan Disclosure [Line Items]
Total plan assets at fair value	0	0
Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Total plan assets at fair value	11,075	8,814
Significant Unobservable Inputs (Level 3) | Large/mid-capitalization equity securities
Defined Benefit Plan Disclosure [Line Items]
Total plan assets at fair value	0	0
Significant Unobservable Inputs (Level 3) | Small-capitalization equity securities
Defined Benefit Plan Disclosure [Line Items]
Total plan assets at fair value	0	0
Significant Unobservable Inputs (Level 3) | International and emerging market equity securities
Defined Benefit Plan Disclosure [Line Items]
Total plan assets at fair value	0	0
Significant Unobservable Inputs (Level 3) | Fixed income securities
Defined Benefit Plan Disclosure [Line Items]
Total plan assets at fair value	0	0
Significant Unobservable Inputs (Level 3) | Private equity and hedge funds
Defined Benefit Plan Disclosure [Line Items]
Total plan assets at fair value	11,075	8,814
Significant Unobservable Inputs (Level 3) | Other assets
Defined Benefit Plan Disclosure [Line Items]
Total plan assets at fair value	$0	$0

Recovered_Sheet4

Retirement Plans And Other Postretirement Benefits (Schedule Of Fair Value Measurements Of Plan Assets Using Significant Unobservable Inputs (Level 3), Reconciliation Of Balances) (Details) (Private equity and hedge funds, USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Private equity and hedge funds
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	$8,814	$8,356
Purchases	4,142	2,864
Sales	0	0
Distributions	-2,088	-2,567
Actual return on plan assets still held at year end	207	161
Ending Balance	$11,075	$8,814

Savings_Plan_Details

Savings Plan (Details) (USD $)	12 Months Ended					11 Months Ended	25 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 1998	Dec. 31, 1997	Dec. 31, 2014	Jan. 31, 2014
Savings Plan [Line Items]
Previous savings plan's vesting period	5 years
Charges recognized	$1,600,000	$2,600,000	$2,500,000
Number of common stock purchased				7,200	46,671
Amount of common stock purchased				200,000	1,000,000
Savings Plan
Savings Plan [Line Items]
Employee contribution to savings plan						0.5	1
Defined Contribution Plan Employer Employee Contribution						1	1
Maximum matching contribution						5.00%	5.00%
Percentage of enrollment of base pay	3.00%
Non Qualified Plan [Member]
Savings Plan [Line Items]
Liability under the restoration plan	$1,700,000	$2,200,000				$1,700,000
Liability under the restoration plan, shares	74,190	75,726				74,190

Rental_Expense_And_Contractual2

Rental Expense And Contractual Commitments (Narrative) (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Leases, Operating [Abstract]
Rental expenses for continuing operations from the consecutive year	$3.60	$3.40	$3.60
Contractual obligations for plant construction and purchases of real property and equipment amounted	$4.90

Rental_Expense_And_Contractual3

Rental Expense And Contractual Commitments (Schedule Of Rental Commitments Under All Non-Cancelable Operating Leases For Continuing Operation) (Details) (USD $)	Dec. 31, 2014
In Thousands, unless otherwise specified
Leases, Operating [Abstract]
2015	$2,379
2016	1,908
2017	1,870
2018	1,787
2019	657
Remainder	1,327
Total	$9,928

Income_Taxes_Narrative_Details

Income Taxes (Narrative) (Details) (USD $)	3 Months Ended	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Taxes [Line Items]
Deferred Tax Benefit Expense Valuation Allowance Adj Capital Loss Carryforwards	$4,800,000	$4,900,000
Deferred Tax Benefit Expense Unremitted Earnings FCTA		2,200,000
Deferred Tax Expense Benefit Unremitted Earnings FCTA Out of Period Adj		1,700,000
Benefit from the tax incentives		100,000	2,500,000	4,300,000
Benefit from the tax incentives, per share		$0	$0.08	$0.13
Valuation allowance	14,577,000	14,577,000	20,019,000
Balance of unrecognized state tax positions	1,400,000	1,400,000
State And Foreign Net Operating Loss Carryforwards
Income Taxes [Line Items]
Operating Loss Carryforwards	3,000,000	3,000,000
Valuation allowance	2,800,000	2,800,000	1,700,000
Excess Capital Losses From Investments And Other Related Items
Income Taxes [Line Items]
Valuation allowance	16,400,000	16,400,000	11,400,000
Asset Impairments In Foreign Jurisdictions
Income Taxes [Line Items]
Valuation allowance	$400,000	$400,000	$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%
Minimum
Income Taxes [Line Items]
Net Operating Loss Carrforward Expiration Period		5 years
Maximum
Income Taxes [Line Items]
Net Operating Loss Carrforward Expiration Period		8 years

Income_Taxes_Schedule_Of_Incom

Income Taxes (Schedule Of Income From Continuing Operations Before Income Taxes) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Income from continuing operations before income taxes:
Domestic	$38,402		$37,380		$35,488
Foreign	7,014		15,552		26,016
Income from continuing operations before income taxes	45,416		52,932		61,504
Current income taxes:
Federal	14,568		15,988		10,905
State	2,178		1,416		796
Foreign	4,102		4,737		7,372
Current income taxes, Total	20,848		22,141		19,073
Deferred income taxes:
Federal	-9,530		-2,933		1,212
State	-417		-852		163
Foreign	-1,514		-1,361		-2,129
Deferred income taxes, Total	-11,461		-5,146		-754
Total income taxes	$9,387	[1]	$16,995	[1]	$18,319	[1]
[1]	See Notes 1, 3, 4 and 18 for more information on losses associated with plant shutdowns, asset impairments and restructurings, unusual items, gains or losses from sale of assets, gains or losses on an investment accounted for under the fair value method and other items.

Income_Taxes_Summary_of_Effect

Income Taxes (Summary of Effective Income Tax Rate For Continuing Operations) (Details)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Tax Disclosure [Abstract]
Income tax expense at federal statutory rate	35.00%	35.00%	35.00%
State taxes, net of federal income tax benefit	2.20%	0.10%	1.10%
Tax contingency accruals and tax settlements	2.00%	2.00%	-0.50%
Non-deductible expenses	0.90%	0.60%	0.30%
Foreign rate differences	-0.10%	-0.70%	-0.60%
Tax incentive	-0.10%	-4.70%	-7.00%
Valuation allowance for foreign operating loss carry-forwards	-0.40%	0.50%	-0.10%
Research and development tax credit	-0.60%	-0.40%	0.00%
Domestic Production Activities Deduction	-1.90%	-1.40%	-0.60%
Changes in estimates related to prior year tax provision	-2.30%	-0.60%	-0.50%
Unremitted earnings from foreign operations	-3.80%	0.90%	0.60%
Valuation allowance for capital loss carry-forwards	-10.20%	0.80%	1.90%
Other	0.00%	0.00%	0.20%
Effective income tax rate for continuing operations	20.70%	32.10%	29.80%

Income_Taxes_Schedule_Of_Defer

Income Taxes (Schedule Of Deferred Tax Liabilities And Assets) (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Deferred tax liabilities:
Amortization of goodwill and other intangibles	$45,696	$46,738
Depreciation	27,550	29,994
Foreign currency translation gain adjustment	4,233	8,620
Derivative financial instruments	316	432
Total deferred tax liabilities	77,795	85,784
Deferred tax assets:
Pensions	34,214	14,813
Employee benefits	11,597	11,124
Inventory	6,221	2,292
Excess capital losses and book/tax basis differences on investments	3,282	4,316
Tax benefit on state and foreign NOL and credit carryforwards	2,967	1,871
Asset write-offs, divestitures and environmental accruals	1,593	3,734
Timing adjustment for unrecognized tax benefits on uncertain tax positions, including portion relating to interest and penalties	842	600
Allowance for doubtful accounts	479	639
Other	799	1,247
Deferred tax assets before valuation allowance	61,994	40,636
Less: Valuation allowance	14,577	20,019
Total deferred tax assets	47,417	20,617
Net deferred tax liability	30,378	65,167
Included in the balance sheet:
Noncurrent deferred tax liabilities in excess of assets	39,255	70,795
Current deferred tax assets in excess of liabilities	$8,877	$5,628

Income_Taxes_Schedule_Of_Unrec

Income Taxes (Schedule Of Unrecognized Uncertain Tax Positions) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance at beginning of period	$2,239	$910	$1,025
Increase (decrease) due to tax positions taken in, Current period	619	643	432
Increase (decrease) due to tax positions taken in, Prior period	397	686	-21
Increase (decrease) due to settlements with taxing authorities	0	0	-398
Reductions due to lapse of statute of limitations	0	0	-128
Balance at end of period	$3,255	$2,239	$910

Income_Taxes_Schedule_Of_Addit

Income Taxes (Schedule Of Additional Information Related To Unrecognized Uncertain Tax Positions) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]
Gross unrecognized tax benefits on uncertain tax positions (reflected in current income tax and other noncurrent liability accounts in the balance sheet)	$3,255	$2,239	$910	$1,025
Deferred income tax assets related to unrecognized tax benefits on uncertain tax positions (reflected in deferred income tax accounts in the balance sheet)	-726	-540	-212
Net unrecognized tax benefits on uncertain tax positions, which would impact the effective tax rate if recognized	2,529	1,699	698
Interest and penalties accrued on deductions taken relating to uncertain tax positions (approximately $150, $100 and $(300) reflected in income tax expense in the income statement in 2014, 2013 and 2012, respectively, with the balance shown in current income tax and other noncurrent liability accounts in the balance sheet)	310	156	60
Interest and penalties accrued on deductions taken relating to uncertain tax positions, reflected in income tax expense in the income statement	150	100	-300
Related deferred income tax assets recognized on interest and penalties	-116	-60	-23
Interest and penalties accrued on uncertain tax positions net of related deferred income tax benefits, which would impact the effective tax rate if recognized	194	96	37
Total net unrecognized tax benefits on uncertain tax positions reflected in the balance sheet, which would impact the effective tax rate if recognized	$2,723	$1,795	$735

Losses_Associated_With_Plant_S1

Losses Associated With Plant Shutdowns, Asset Impairments And Restructurings, Unusual Items, Gains From Sale Of Assets And Other Items (Details) (USD $)	3 Months Ended	12 Months Ended						3 Months Ended											17 Months Ended	6 Months Ended
	Mar. 31, 2014	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012		Jun. 30, 2013	Dec. 31, 2014	Dec. 31, 2012	Jun. 30, 2012	Sep. 30, 2014	Jun. 30, 2014	Dec. 31, 2013	Sep. 30, 2013	Mar. 31, 2013	Sep. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Jun. 30, 2012	Aug. 31, 2012
																						employee
Restructuring Cost and Reserve [Line Items]
Asset impairments		$993,000		$1,639,000		$2,185,000
Unrealized gain (loss) on investments under fair value method		2,000,000		3,400,000		16,100,000
Losses Associated with Plant Shutdowns, Asset Impairments, Restructurings & Other	13,800,000			3,400,000		5,500,000
Losses Associated with Plant Shutdowns, Asset Impairments, Restructurings & Other After Taxes	9,300,000			2,200,000		3,600,000
Effect of LIFO inventory liquidation on income						2,700,000
kaleo
Restructuring Cost and Reserve [Line Items]
Unrealized gain (loss) on investments under fair value method		2,000,000	[1]	3,400,000	[1]	16,100,000	[1]
Unrealized gain (loss) on investments, net of tax		1,000,000		2,200,000		10,200,000
Unrealized gain (loss) on investments under fair value method after taxes						10,200,000
Harbinger
Restructuring Cost and Reserve [Line Items]
Unrealized loss on investments under fair value method, other than temporary impairment		800,000		400,000		1,100,000
Unrealized loss on investments under fair value method, other than temporary impairment, after taxes		400,000		300,000		700,000
Film Products Manufacturing Facility in Shanghai, China
Restructuring Cost and Reserve [Line Items]
Gain (loss) on sale of equipment								-91,000
Gain (Loss) on Disposition of Property, Plant, and Equipment, Net of Tax								-91,000
Alleghany and Bath County, Virginia
Restructuring Cost and Reserve [Line Items]
Gain (Loss) on Disposition of Assets		1,208,000		0		0
Gain (Loss) on Sale of Investment Property		0		1,018,000		0
Unrealized Gain Loss On Investment Property After Tax				-600,000
Gain (Loss) on Sale of Investment Property, After Tax		-800,000
Film Products Manufacturing Facility in LaGrange, Georgia
Restructuring Cost and Reserve [Line Items]
Asset impairments											800,000
Gain (loss) on sale of equipment									100,000
Gain (Loss) on Disposition of Property, Plant, and Equipment, Net of Tax									73,000
Gain on sale of property										1,100,000
Gain on sale of property after taxes										600,000
Asset impairments after taxes											500,000
Aluminum Extrusions Manufacturing Facility In Newnan Georgia
Restructuring Cost and Reserve [Line Items]
Expected future environmental costs								85,000	700,000	100,000		75,000	200,000	1,500,000	100,000
Expected future environmental costs after taxes								53,000	400,000	49,000		46,000	100,000	900,000	62,000
Facility Closing | Film Products Manufacturing Facility in Red Springs, NC
Restructuring Cost and Reserve [Line Items]
Plant shutdown related expenditures	-500,000	-700,000		-500,000					100,000			-37,000	-300,000	-300,000	-200,000
Plant shutdown related expenditures after taxes	-300,000								63,000			-23,000	-200,000	-200,000	-83,000
Severance and other employee-related costs		400,000												300,000
Asset Impairment and Other Plant Shutdown Related Costs		300,000
Asset impairments															200,000
Number of employees employed		66							66
Facility Closing | Aluminum Extrusions Manufacturing Facility In Kentland, Indiana
Restructuring Cost and Reserve [Line Items]
Plant shutdown related expenditures								-400,000	-11,000	-900,000	-1,000,000	-20,000	-24,000		-45,000	-200,000	-800,000	-900,000
Plant shutdown related expenditures after taxes								-200,000	-7,000	-500,000	-700,000	-12,000	-15,000		-28,000	-94,000	-500,000	-500,000
Severance and other employee-related costs																		1,200,000	1,200,000
Gain (loss) on sale of equipment																		800,000
Accelerated depreciation																		2,400,000	2,400,000
Other shutdown-related charges																		2,300,000	1,000,000
Effect of LIFO inventory liquidation on income																		1,500,000
Number of employees employed																						146
Estimated charges related to plant shutdown																			4,500,000
Cash expenditures related to restructuring charges																			3,500,000
Cash expenditures related to restructuring charges, period of recognition																			18 months
Film Products
Restructuring Cost and Reserve [Line Items]
Severance and other employee-related costs										200,000	100,000					100,000
Asset impairments										200,000
Severance and other employee-related costs after taxes										100,000	46,000					67,000
Gain associated with insurance recovery on idle equipment that was destroyed in a fire at outside warehouse										1,300,000
Gain associated with insurance recovery on idle equipment that was destroyed in a fire at outside warehouse after taxes										700,000
Asset impairments after taxes										200,000
Aluminum Extrusions
Restructuring Cost and Reserve [Line Items]
Severance and other employee-related costs														300,000				200,000
Severance and other employee-related costs after taxes														200,000				100,000
AACOA
Restructuring Cost and Reserve [Line Items]
Integration-related expenses and other non-recurring transactions								90,000		200,000						100,000
Integration-related expenses and other non-recurring transactions after taxes								54,000		100,000						63,000
Acquisition-related expenses						2,000,000				900,000							300,000			1,200,000	800,000
Acquisition-related expenses after taxes										600,000							200,000
AACOA | Aluminum Extrusions
Restructuring Cost and Reserve [Line Items]
Charge associated with purchase accounting adjustements										100,000
Charge associated with purchase accounting adjustments after taxes										100,000
Terphane
Restructuring Cost and Reserve [Line Items]
Integration-related expenses and other non-recurring transactions										100,000	600,000						100,000	300,000
Integration-related expenses and other non-recurring transactions after taxes										100,000	400,000						100,000	200,000
Tredegar vs. 3M [Member]
Restructuring Cost and Reserve [Line Items]
Litigation Settlement, Amount	10,000,000											10,000,000
Litigation Settlement Amount, Net of Tax	6,800,000
Film Products
Restructuring Cost and Reserve [Line Items]
Severance and other employee-related costs	800,000								500,000			400,000	600,000
Severance and other employee-related costs after taxes	500,000								300,000			200,000	400,000
Aluminum Extrusions
Restructuring Cost and Reserve [Line Items]
Severance and other employee-related costs												31,000
Severance and other employee-related costs after taxes												$18,000
[1]	See Notes 1, 3, 4 and 18 for more information on losses associated with plant shutdowns, asset impairments and restructurings, unusual items, gains or losses from sale of assets, gains or losses on an investment accounted for under the fair value method and other items.

Contingencies_Details

Contingencies (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Mar. 31, 2014	Jan. 08, 2013
			in
Loss Contingencies [Line Items]
Minimum thickness of performance enhancing layer on films required to avoid antidumping duty order			0.00001
Tredegar vs. 3M [Member]
Loss Contingencies [Line Items]
Litigation Settlement, Amount	$10	$10

Selected_Quarterly_Financial_D2

Selected Quarterly Financial Data (Details) (USD $)	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Quarterly Financial Information Disclosure [Abstract]
Deferred Tax Benefit Expense Valuation Allowance Adj Capital Loss Carryforwards	$4,800,000								$4,900,000
Sales	239,219,000	240,429,000	236,965,000	235,213,000	231,096,000	243,194,000	243,530,000	241,526,000	951,826,000		959,346,000		882,188,000
Gross profit	34,109,000	34,582,000	38,480,000	37,749,000	34,417,000	37,253,000	37,540,000	36,836,000
Income from continuing operations	13,054,000	10,745,000	3,752,000	8,479,000	9,402,000	7,428,000	9,590,000	9,517,000	36,029,000		35,937,000		43,185,000
Income (loss) from discontinued operations	0	850,000	0	0	0	-450,000	-8,300,000	-5,240,000	850,000	[1]	-13,990,000	[1]	-14,934,000	[1]
Net income (loss)	13,054,000	11,595,000	3,752,000	8,479,000	9,402,000	6,978,000	1,290,000	4,277,000	36,879,000		21,947,000		28,251,000
Basic:
Continuing operations	$0.40	$0.33	$0.12	$0.26	$0.29	$0.23	$0.30	$0.30	$1.12		$1.12		$1.35
Discontinued operations	$0	$0.03		$0	$0	($0.01)	($0.26)	($0.16)	$0.02		($0.44)		($0.47)
Net income	$0.40	$0.36	$0.12	$0.26	$0.29	$0.22	$0.04	$0.14	$1.14		$0.68		$0.88
Diluted:
Continuing operations (in usd per share)	$0.40	$0.33	$0.11	$0.26	$0.29	$0.23	$0.29	$0.29	$1.11		$1.10		$1.34
Discontinued operations (in usd per share)	$0	$0.03		$0	$0	($0.02)	($0.25)	($0.16)	$0.02		($0.43)		($0.46)
Net income (in usd per share)	$0.40	$0.36	$0.11	$0.26	$0.29	$0.21	$0.04	$0.13	$1.13		$0.67		$0.88
Shares used to compute earnings (loss) per share:
Shares used to compute earnings (loss) per share, Basic (in shares)	32,335,000	32,319,000	32,312,000	32,242,000	32,222,000	32,201,000	32,187,000	32,076,000	32,302,108		32,171,751		32,032,343
Shares used to compute earnings (loss) per share, Diluted (in shares)	32,449,000	32,507,000	32,641,000	32,621,000	32,622,000	32,658,000	32,635,000	32,480,000	32,553,854		32,599,279		32,192,576
Deferred Tax Benefit Expense Unremitted Earnings FCTA									$2,200,000
[1]	See Notes 1, 3, 4 and 18 for more information on losses associated with plant shutdowns, asset impairments and restructurings, unusual items, gains or losses from sale of assets, gains or losses on an investment accounted for under the fair value method and other items.