Magnera (MAGN) 10-K 25 Feb 22 2021 FY Annual report Financial data

Cover Page

Cover Page - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Feb. 18, 2022	Jun. 30, 2021
Cover [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2021
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	FY
Trading Symbol	GLT
Entity Registrant Name	Glatfelter Corporation
Entity Central Index Key	0000041719
Entity Well-known Seasoned Issuer	No
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Large Accelerated Filer
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Interactive Data Current	Yes
Entity File Number	1-03560
Entity Tax Identification Number	23-0628360
Entity Address, Address Line One	4350 Congress Street
Entity Address, Address Line Two	Suite 600
Entity Address, City or Town	Charlotte
Entity Address, State or Province	NC
Entity Address, Postal Zip Code	28209
City Area Code	704
Local Phone Number	885-2555
Document Annual Report	true
Document Transition Report	false
Title of 12(b) Security	Common Stock, par value $.01 per share
Security Exchange Name	NYSE
Entity Incorporation, State or Country Code	PA
Entity Common Stock, Shares Outstanding		44,627,704
Entity Public Float			$ 509.1
Documents Incorporated by Reference	DOCUMENTS INCORPORATED BY REFERENCE Portions of the definitive Proxy Statement to be delivered to shareholders in connection with the Annual Meeting of Shareholders to be held on May 5, 2022 are incorporated by reference into Part III.

Audit Information

Audit Information	12 Months Ended
	Dec. 31, 2021
Audit Information [Abstract]
Auditor Firm ID	34
Auditor Name	DELOITTE & TOUCHE LLP
Auditor Location	Charlotte, North Carolina

Consolidated Statements of Inco

Consolidated Statements of Income (Loss) - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Statement [Abstract]
Type of Revenue [Extensible List]	Net sales	Net sales	Net sales
Net sales	$ 1,084,694	$ 916,498	$ 927,673
Type of Cost, Good or Service [Extensible List]	Net sales	Net sales	Net sales
Costs of products sold	$ 939,899	$ 768,629	$ 780,131
Gross profit	144,795	147,869	147,542
Selling, general and administrative expenses	121,250	100,045	94,967
Gains on dispositions of plant, equipment and timberlands, net	(5,069)	(1,332)	(2,060)
Operating income	28,614	49,156	54,635
Non-operating income (expense)
Interest expense	(12,353)	(7,022)	(10,408)
Interest income	73	399	1,123
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement	0	6,154	75,326
Other, net	(2,657)	(4,020)	(4,477)
Total non-operating expense	(14,937)	(16,797)	(89,088)
Income (loss) before income taxes	13,677	32,359	(34,453)
Income tax provision (benefit)	6,956	11,576	(9,242)
Income (loss) from continuing operations	6,721	20,783	(25,211)
Discontinued operations:
Income before income taxes	216	544	1,284
Income tax provision (benefit)	0	29	(2,386)
Income from discontinued operations	216	515	3,670
Net income (loss)	$ 6,937	$ 21,298	$ (21,541)
Basic earnings (loss) per share
Income (loss) from continuing operations (in dollars per share)	$ 0.15	$ 0.47	$ (0.57)
Income from discontinued operations (in dollars per share)	0	0.01	0.08
Basic earnings per share (in dollars per share)	0.15	0.48	(0.49)
Diluted earnings (loss) per share
Income (loss) from continuing operations (in dollars per share)	0.15	0.47	(0.57)
Income (loss) from discontinued operations (in dollars per share)	0	0.01	0.08
Diluted earnings per share (in dollars per share)	$ 0.15	$ 0.48	$ (0.49)
Weighted average shares outstanding
Basic (in shares)	44,551	44,339	44,132
Diluted (in shares)	44,924	44,614	44,132

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 6,937	$ 21,298	$ (21,541)
Foreign currency translation adjustments	(27,232)	33,821	(6,724)
Net change in:
Deferred gains (losses) on cash flow hedges, net of taxes of $(1,866), $2,507, and $(737), respectively	4,484	(6,812)	2,117
Unrecognized retirement obligations, net of taxes of $(111), $158, and $(22,927), respectively	1,097	(7,766)	64,151
Other comprehensive income (loss)	(21,651)	19,243	59,544
Comprehensive income (loss)	$ (14,714)	$ 40,541	$ 38,003

Consolidated Statements of Co_2

Consolidated Statements of Comprehensive Income (Loss) (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statement of Comprehensive Income [Abstract]
Taxes on deferred gains (losses) on cash flow hedges	$ (1,866)	$ 2,507	$ (737)
Taxes on unrecognized retirement obligations	$ (111)	$ 158	$ (22,927)

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Assets
Cash and cash equivalents	$ 138,436	$ 99,581
Accounts receivable (less allowance for doubtful accounts: 2021 - $2,731; 2020 - $2,093)	170,212	122,817
Inventories	279,520	196,230
Prepaid expenses and other current assets	48,398	34,297
Total current assets	636,566	452,925
Plant, equipment and timberlands, net	758,812	543,267
Goodwill	236,165	164,369
Intangible assets, net	156,304	81,835
Other assets	92,760	44,485
Total assets	1,880,607	1,286,881
Liabilities and Shareholders' Equity
Current portion of long-term debt	26,437	25,057
Short-term debt	22,843	0
Accounts payable	214,015	127,505
Dividends payable	6,237	5,988
Environmental liabilities	2,200	3,700
Other current liabilities	99,438	71,093
Total current liabilities	371,170	233,343
Long-term debt	738,075	288,464
Deferred income taxes	87,285	77,131
Other long-term liabilities	141,315	110,011
Total liabilities	1,337,845	708,949
Commitments and contingencies	0	0
Shareholders’ equity
Common stock, $0.01 par value; authorized - 120,000,000; issued - 54,361,980 (including treasury shares: 2021 - 9,812,841; 2020 - 9,994,144)	544	544
Capital in excess of par value	64,779	63,261
Retained earnings	705,600	723,365
Accumulated other comprehensive loss	(80,304)	(58,653)
Shareholders' equity before treasury stock	690,619	728,517
Less cost of common stock in treasury	(147,857)	(150,585)
Total shareholders’ equity	542,762	577,932
Total liabilities and shareholders’ equity	$ 1,880,607	$ 1,286,881

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$ 2,731	$ 2,093
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	120,000,000,000	120,000,000,000
Common stock, shares issued (in shares)	54,361,980	54,361,980
Treasury stock, shares (in shares)	9,812,841	9,994,144

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Operating activities
Net income (loss)	$ 6,937	$ 21,298	$ (21,541)
Income from discontinued operations, net of tax	(216)	(515)	(3,670)
Adjustments to reconcile to net cash provided by operating activities:
Depreciation, depletion and amortization	61,421	56,600	50,820
Amortization of debt issue costs and original issue discount	865	590	1,672
Pension settlement charge	0	0	75,326
Asset impairment charge	0	900	0
Deferred income tax benefit	(13,619)	(2,071)	(22,971)
Gains on dispositions of plant, equipment and timberlands, net	(5,069)	(1,332)	(2,060)
Share-based compensation	5,063	5,655	3,583
Change in operating assets and liabilities
Accounts receivable	(14,794)	9,563	(5,473)
Inventories	(40,019)	6,860	(17,387)
Prepaid and other current assets	5,770	1,679	(2,833)
Accounts payable	65,828	(7,234)	10,337
Accruals and other current liabilities	(4,165)	12,143	(19,536)
Pension assets received	0	0	53,401
Other	2,975	4,857	3,167
Net cash provided by operating activities	70,977	108,993	102,835
Investing activities
Expenditures for purchases of plant, equipment and timberlands	(30,037)	(28,136)	(27,765)
Proceeds from disposals of plant, equipment and timberlands, net	5,567	1,413	2,198
Acquisitions, net of cash acquired	(464,856)	0	(1,383)
Other investing	(440)	(50)	(163)
Net cash used by investing activities	(489,766)	(26,773)	(27,113)
Financing activities
Proceeds from note offerings	500,000	0	0
Proceeds from term loans	46,849	0	248,644
Repayment of term loans	(26,088)	(23,246)	(16,660)
Repayments of note offerings	0	0	(250,000)
Net repayments under revolving credit facility	(23,481)	(53,392)	(28,062)
Payments of borrowing costs	(10,132)	(39)	(2,204)
Payments of dividends	(24,458)	(23,492)	(22,936)
Proceeds from government grants	479	358	0
Payments related to share-based compensation awards and other	(817)	(495)	(1,556)
Net cash provided (used) by financing activities	462,352	(100,306)	(72,774)
Effect of exchange rate changes on cash	(5,418)	5,163	(269)
Net increase (decrease) in cash, cash equivalents and restricted cash	38,145	(12,923)	2,679
Change in cash and cash equivalents from discontinued operations	(996)	(1,613)	(19,163)
Cash, cash equivalents and restricted cash at the beginning of period	111,665	126,201	142,685
Cash, cash equivalents and restricted cash at the end of period	148,814	111,665	126,201
Less: restricted cash in Prepaid and other current assets	(2,000)	(2,000)	0
Less: restricted cash in Other assets	(8,378)	(10,084)	0
Cash and cash equivalents at the end of period	138,436	99,581	126,201
Cash paid (refunded) for:
Interest, net of amounts capitalized	6,957	6,180	10,208
Income taxes, net	$ 15,500	$ (9,993)	$ 14,242

Consolidated Statements of Shar

Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Capital in Excess of Par Value	Retained Earnings	Accumulated Other Comprehensive Loss	Treasury Stock
Beginning Balance at Dec. 31, 2018	$ 538,898	$ 544	$ 62,239	$ 770,305	$ (137,440)	$ (156,750)
Statement of Stockholders' Equity [Abstract]
Net income (loss)	(21,541)			(21,541)
Other comprehensive income	59,544				59,544
Comprehensive income (loss)	38,003
Cash dividends declared	(22,969)			(22,969)
Share-based compensation expense	3,583		3,583
Delivery of treasury shares:
RSUs and PSAs	(792)		(3,625)			2,833
Employee stock options exercised — net	(764)		(2,297)			1,533
Ending Balance at Dec. 31, 2019	555,959	544	59,900	725,795	(77,896)	(152,384)
Statement of Stockholders' Equity [Abstract]
Net income (loss)	21,298			21,298
Other comprehensive income	19,243				19,243
Comprehensive income (loss)	40,541
Cash dividends declared	(23,728)			(23,728)
Share-based compensation expense	5,655		5,655
Delivery of treasury shares:
RSUs and PSAs	(420)		(2,077)			1,657
Employee stock options exercised — net	(75)		(217)			142
Ending Balance at Dec. 31, 2020	577,932	544	63,261	723,365	(58,653)	(150,585)
Statement of Stockholders' Equity [Abstract]
Net income (loss)	6,937			6,937
Other comprehensive income	(21,651)				(21,651)
Comprehensive income (loss)	(14,714)
Cash dividends declared	(24,702)			(24,702)
Share-based compensation expense	5,063		5,063
Delivery of treasury shares:
RSUs and PSAs	(815)		(3,538)			2,723
Employee stock options exercised — net	(2)		(7)			5
Ending Balance at Dec. 31, 2021	$ 542,762	$ 544	$ 64,779	$ 705,600	$ (80,304)	$ (147,857)

Consolidated Statements of Sh_2

Consolidated Statements of Shareholders' Equity (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statement of Stockholders' Equity [Abstract]
Per share amount of cash dividends declared (in dollars per share)	$ 0.555	$ 0.535	$ 0.52

Organization

Organization	12 Months Ended
	Dec. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization	1. ORGANIZATION Glatfelter Corporation and subsidiaries (“Glatfelter”) produce and supply high quality, technology-driven, innovative, and customizable nonwovens solutions can be found in products that are Enhancing Everyday Life®. These include personal care and hygiene products, food and beverage filtration, critical cleaning products, medical and personal protection, packaging products, as well as home improvement and industrial applications. Headquartered in Charlotte, NC, annualized net sales approximate $1.4 billion with approximately 3,300 employees worldwide. Glatfelter’s operations utilize a variety of manufacturing technologies including airlaid, wetlaid and spunlace with sixteen manufacturing sites located in the United States, Canada, Germany, the United Kingdom, France, Spain, and the Philippines. The Company has sales offices in all major geographies serving customers under the Glatfelter and Sontara brands. The terms “we,” “us,” “our,” “the Company,” or “Glatfelter,” refer to Glatfelter Corporation and subsidiaries unless the context indicates otherwise.

Accounting Policies

Accounting Policies	12 Months Ended
	Dec. 31, 2021
Accounting Policies [Abstract]
Accounting Policies	2. ACCOUNTING POLICIES Principles of Consolidation The consolidated financial statements include the accounts of Glatfelter and its wholly-owned subsidiaries. All intercompany balances and transactions have been eliminated. Accounting Estimates The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingencies as of the balance sheet date and the reported amounts of net sales and expenses during the reporting period. Management believes the estimates and assumptions used in the preparation of these consolidated financial statements are reasonable, based upon currently available facts and known circumstances, but recognizes that actual results may differ from those estimates and assumptions. Discontinued Operations The results of operations for the Specialty Papers business have been classified as discontinued operations for all periods presented in the consolidated statements of income (loss). Cash and Cash Equivalents We classify all highly liquid instruments with an original maturity of three months or less at the time of purchase as cash equivalents. Inventories Our inventories are stated at the lower of cost or market. Raw materials, in-process and finished goods inventories are valued principally using the average-cost method. Plant, Equipment and Timberlands For financial reporting purposes, depreciation is computed using the straight-line method over the estimated useful lives of the respective assets. The range of estimated service lives used to calculate financial reporting depreciation for principal items of plant and equipment are as follows: Buildings 15 – 45 years Machinery and equipment 5 – 40 years Other 3 – 25 years Maintenance and Repairs Maintenance and repairs costs are charged to income and major renewals and betterments are capitalized. At the time property is retired or sold, the net carrying value is eliminated and any resultant gain or loss is included in income. Valuation of Long-lived Assets, Intangible Assets and Goodwill We evaluate long-lived assets for impairment when a specific event indicates that the carrying value of an asset may not be recoverable. Recoverability is assessed based on estimates of future cash flows expected to result from the use and eventual disposition of the asset. If the sum of expected undiscounted cash flows is less than the carrying value of the asset, the asset’s fair value is estimated, and an impairment loss is recognized for the amount by which the carrying value exceeds the estimated fair value. Goodwill and indefinite-lived intangible assets are not amortized and, therefore, are reviewed for impairment annually, during the fourth quarter, or more frequently if impairment indicators are present. The fair value of our reporting units, which are also our operating segments, is determined using a market approach and a discounted cash flow model. The fair value of non-amortizing tradename intangible assets is determined using a discounted cash flow model and requires the use and analysis of significant assumptions including among others, estimated cash flows consistent with our long-term strategic plan, perpetuity growth rates, capital expenditures, and discount rates. In addition, the discounted cash flow model requires the use of significant judgement to assess the potential impact of macroeconomic conditions including higher energy prices in Europe, raw material inflation in all three segments, logistics costs, competition and similar factors. For goodwill, impairment losses, if any, are recognized for the amount by which the carrying value of the reporting unit exceeds its fair value. The carrying value of a reporting unit is defined using an enterprise premise which is generally determined by the difference between the unit’s assets and operating liabilities. With respect to non-amortizing tradenames, impairment losses, if any, are recognized for the amount by which the carrying value of the tradename exceeds its fair value. For additional information, refer to Note 6 – “ Asset Impairment . “ Income Taxes Income taxes are determined using the asset and liability method of accounting for income taxes in accordance with FASB ASC 740 Income Taxes (“ASC 740”). Under ASC 740, tax expense includes U.S. and international income taxes plus the provision for U.S. taxes on undistributed earnings of international subsidiaries not deemed to be permanently invested. Tax credits and other incentives reduce tax expense in the year the credits are claimed. Certain items of income and expense are not reported in tax returns and financial statements in the same year. The tax effect of such temporary differences is reported in deferred income taxes. Deferred tax assets are recognized if it is more likely than not that the assets will be realized in future years. We establish a valuation allowance for deferred tax assets for which realization is not more likely than not. Significant judgment is required in determining our worldwide provision for income taxes and recording the related assets and liabilities. In the ordinary course of our business, there are many transactions and calculations where the ultimate tax determination is less than certain. We and our subsidiaries are examined by various Federal, State, and foreign tax authorities. We regularly assess the potential outcomes of these examinations and any future examinations for the current or prior years in determining the adequacy of our provision for income taxes. We continually assess the likelihood and amount of potential adjustments and record any necessary adjustments in the period in which the facts that give rise to a revision become known. Investment tax credits are accounted for by the flow-through method, which results in recognition of the benefit in the year in which the credit become available. We account for global intangible low-taxed income (“GILTI”) tax in the period in which it is incurred. The GILTI provisions require entities to include in its U.S. income tax return foreign subsidiary earnings in excess of an allowable return on the foreign subsidiaries’ tangible assets. Treasury Stock Common stock purchased for treasury is recorded at cost. At the date of subsequent reissue, the treasury stock account is reduced by the cost of such stock on the weighted-average cost basis. Foreign Currency Translation Foreign currency translation gains and losses and the effect of exchange rate changes on transactions designated as hedges of net foreign investments are included as a component of other comprehensive income (loss). Transaction gains and losses are included in income in the period in which they occur. Revenue Recognition We recognize revenue, or net sales, in accordance with ASU No. 2014-09, Revenue from Contracts with Customers. Our revenue is earned primarily from the manufacture and sale of engineered materials (“product sales”). Revenue is earned pursuant to contracts, supply agreements and other arrangements with a wide variety of customers. Our performance obligation is to produce a specified product according to technical specifications and, in substantially all instances, to deliver the product. Revenue from product sales is earned at a point in time. We recognize revenue on product sales when we have satisfied our performance obligation and control of the product has passed to the customer thereby entitling us to payment. With respect to substantially all arrangements for product sales, this is deemed to occur when title transfers in accordance with specified shipping terms. Selling prices are fixed at the time the sales arrangement is entered into and payment terms are customary for similar arrangements in our industry. Many of our agreements include customary provisions for volume rebates, discounts and similar incentives. In addition, we are obligated for products that fail to meet agreed upon specification. Provisions for such items are estimated and recorded as sales deductions in the period in which the related revenue is recognized. Refer to Note 8 – “ Revenue ” for additional information about the disaggregation of our net sales. Environmental Liabilities Accruals for losses associated with environmental obligations are recorded when it is probable that a liability has been incurred and the amount of the liability can be reasonably estimated based on existing legislation and remediation technologies. These accruals are adjusted periodically as assessment and remediation actions continue and/or further legal or technical information develops. Such undiscounted liabilities are exclusive of any insurance or other claims against third parties. Environmental costs are capitalized if the costs extend the life of the asset, increase its capacity and/or mitigate or prevent contamination from future operations. Recoveries of environmental remediation costs from other parties, including insurance carriers, are recorded as assets when their receipt is assured beyond a reasonable doubt. Earnings Per Share Basic earnings (loss) per share is computed by dividing net income (loss) by the weighted-average common shares outstanding during the respective periods. Diluted earnings per share is computed by dividing net income by the weighted-average common shares and common share equivalents outstanding during the period. In periods in which there is a net loss, diluted loss per share is equal to basic loss per share. The dilutive effect of common share equivalents is considered in the diluted earnings per share computation using the treasury stock method. Financial Derivatives and Hedging Activities We use financial derivatives to manage exposure to changes in foreign currencies and interest rates. In accordance with FASB ASC 815 Derivatives and Hedging (“ASC 815”), we record all derivatives on the balance sheet at fair value. The accounting for changes in the fair value of derivatives depends on the intended use of the derivative, whether we have elected to designate a derivative in a hedging relationship and apply hedge accounting, and whether the hedging relationship has satisfied the criteria necessary to apply hedge accounting. The gain or loss on those derivative instruments designated and qualifying as a hedge of the exposure to variability in expected future cash flows related to forecasted transactions is deferred and reported as a component of accumulated other comprehensive income (loss). Deferred gains or losses are reclassified to our results of operations at the time the hedged forecasted transaction is recorded in our results of operations. The effectiveness of cash flow hedges is assessed at inception and quarterly thereafter. If the instrument matures, is de-designated, becomes ineffective or it becomes probable that the originally forecasted transaction will not occur, the related change in fair value of the derivative instrument is also reclassified from accumulated other comprehensive income (loss) and recognized in earnings. For additional information, refer to Note 22 - " Financial Derivativ es and Hedging Activities. " Fair Value of Financial Instruments Under the accounting for fair value measurements and disclosures, a fair value hierarchy was established that prioritizes the inputs to valuation techniques used to measure fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). A financial instrument's level within the fair value hierarchy is based on the lowest level of any input that is significant to the fair value measurement. The three levels of the fair value hierarchy are described below: Level 1 - Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities. Level 2 - Inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly or indirectly, including quoted prices for similar assets or liabilities in active markets; quoted prices for identical or similar assets or liabilities in markets that are not active; inputs other than quoted prices that are observable for the asset or liability (e.g., interest rates); and inputs that are derived principally from or corroborated by observable market data by correlation or other means. Level 3 - Inputs that are both significant to the fair value measurement and unobservable. Recently Issued Accounting Pronouncements In December 2020, the FASB issued ASU 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes . The update eliminates, clarifies, and modifies certain guidance related to the accounting for income taxes. ASU 2019-12 is effective for annual reporting periods beginning after December 15, 2020. We adopted this standard in the first quarter of 2021, but it did not have a material impact on our financial statements.

Acquisitions

Acquisitions	12 Months Ended
	Dec. 31, 2021
Business Combination and Asset Acquisition [Abstract]
Acquisitions	3. ACQUISITION S On May 13, 2021, we completed the acquisition of all the outstanding equity interests in Georgia-Pacific Mt. Holly LLC, Georgia-Pacific's U.S. nonwovens business ("Mount Holly") for $170.9 million. This business includes the Mount Holly, NC manufacturing facility with annual production capacity of approximately 37,000 metric tons and an R&D center and pilot line for nonwovens product development in Memphis, TN. The Mount Holly facility produces high-quality airlaid products for the wipes, hygiene, and other nonwoven materials markets, competing in the marketplace with nonwoven technologies and substrates, as well as other materials focused primarily on consumer based end-use applications. The facility employs approximately 140 people. Mount Holly’s results are reported prospectively from the acquisition date as part of our Airlaid Materials segment. Mount Holly had annual net sales of approximately $100 million in 2020. The Mount Holly acquisition was financed through a combination of cash on hand and borrowings under our revolving credit facility. On October 29, 2021, we completed the acquisition of PMM Holding (Luxembourg) AG, the owner of all of the equity interest in Jacob Holm, a global leading manufacturer of premium quality spunlace nonwoven fabrics for critical cleaning, high-performance materials, personal care, hygiene and medical applications, for approximately $304.0 million for all outstanding shares and the extinguishment of Jacob Holm’s debt. Jacob Holm’s broad product offerings and blue-chip customer base expands our portfolio to include surgical drapes and gowns, wound care, face masks, facial wipes and cosmetic masks. The acquisition of Jacob Holm’s Sontara brand, a leading producer of finished products for critical cleaning wipes and medical apparel, enhances our technological capabilities. Jacob Holm has approximately 760 employees, operates production facilities in the United States, France and Spain, and its revenue in 2020 totaled approximately $400 million. The results of Jacob Holm's operations are reported as Spunlace, a newly formed segment, prospectively from the acquisition date. The Jacob Holm acquisition was financed with the proceeds of a private placement of $500.0 million of senior notes discussed in Note 17 - " Long-term Debt ." The following table sets forth information related to the consideration exchanged for each acquisition. In thousands Mount Holly Jacob Holm Total Total consideration $ 170,919 $ 303,952 $ 474,871 Less: Debt repaid — (148,000) (148,000) Cash consideration $ 170,919 $ 155,952 $ 326,871 The preliminary purchase price allocations set forth in the following table are based on all information available to us at the present time and is subject to change. With respect to the Mount Holly acquisition, the purchase price allocation is complete. However, the Jacob Holm purchase price allocation is preliminary as we are in the process of finalizing our analysis of certain matters, primarily related to the assessment potential tax liabilities associated with the acquired entities. In the event new information becomes available, the measurement of the amount of goodwill reflected may be affected. In thousands Mount Holly Jacob Holm Total Assets Cash and cash equivalents $ — $ 11,426 $ 11,426 Accounts receivable 11,599 30,271 41,870 Inventory 7,031 45,340 52,371 Prepaid and other current assets 11 6,727 6,738 Plant, equipment and timberlands 100,498 158,612 259,110 Intangible assets 20,000 70,240 90,240 Goodwill 35,793 48,855 84,648 Other assets 8,041 26,929 34,970 Total assets 182,973 398,400 581,373 Liabilities Short-term debt 14,081 14,081 Accounts payable 2,321 25,264 27,585 Other current liabilities 1,868 21,763 23,631 Other long-term liabilities 7,865 33,340 41,205 Total liabilities 12,054 94,448 106,502 Total preliminary purchase price $ 170,919 $ 303,952 $ 474,871 The preliminary purchase price allocations set forth in the table above are based on all information available to us at the present time and is subject to change. In the event new information becomes available, primarily related to the finalization of post-closing working capital adjustments, the measurement of the amount of goodwill reflected may be affected. For purposes of allocating the total purchase price, assets acquired and liabilities assumed are recorded at their estimated fair market values. The allocations set forth above are based on management’s estimate of the fair value using valuation techniques such as discounted cash flow models, appraisals and similar methodologies. Acquired property, plant and equipment in both acquisitions are being depreciated on a straight-line basis with estimated remaining lives ranging from five years to 35 years. Intangible assets recorded in connection with the Mount Holly acquisition consist of customer relationships and are being amortized on a straight-line basis (11 years). With respect to the Jacob Holm acquisition, identifiable intangible assets consist of trade and product names (15 to 20-year life), technical know-how (8 to 20-year life) and customer relationships (20-year life). These assets are being amortized on a straight-line basis. The goodwill arising from the acquisitions largely relates to strategic benefits, product and market diversification, assembled workforce, and similar factors. Goodwill recorded in connection with the Mount Holly transaction is deductible for federal tax purposes over 15 years. Additional information is discussed in Note 16 - "Goodwill and Intangible Assets . " In connection with the Jacob Holm acquisition and as provided for in the underlying Share Purchase Agreement, we recorded a $17.3 million indemnification asset related to certain potential tax liabilities. The indemnification asset is presented above under the caption "Other assets." The following table sets forth information related to amounts of net sales, operating income (loss) of the acquired businesses included in our results of operations prospectively from the date of acquisition and amounts of legal and professional fees directly related to the transaction included in our results of operations for the year ended December 31, 2021: In thousands Mount Holly Jacob Holm Net sales $ 60,599 $ 57,637 Operating income (loss) 6,205 (1,338) Legal and professional fees included in SG&A 3,421 16,336 For purposes of presenting the pro forma financial information, the legal and professional costs directly related to the acquisitions have been eliminated. The following table summarizes annual unaudited pro forma financial information as if the acquisition occurred as of January 1, 2020: 2021 2020 In thousands, except per share (unaudited) Net sales $ 1,400,901 $ 1,421,578 Income (loss) from continuing operations 14,677 23,055 For purposes of presenting the above pro forma financial information, the legal and professional costs directly related to the acquisitions have been eliminated. This unaudited pro forma financial information presented in this section is not necessarily indicative of what the operating results would have been had the acquisition been completed at the beginning of the respective period nor is it indicative of future results.

Discontinued Operations

Discontinued Operations	12 Months Ended
	Dec. 31, 2021
Discontinued Operations and Disposal Groups [Abstract]
Discontinued Operations	4. DISCONTINUED OPERATIONS In 2018, we completed the sale of the Specialty Papers business on a cash free and debt free basis to Pixelle Specialty Solutions LLC, an affiliate of Lindsay Goldberg (the “Purchaser”) for $360.0 million. The sale of the business was in connection with the strategic focus on our more growth oriented Composite Fibers and Airlaid Materials. The following table sets forth a summary of discontinued operations included in the consolidated statements of income (loss): Year ended December 31, In thousands 2021 2020 2019 Net sales $ — $ — $ — Energy and related sales, net — — — Total revenues — — — Costs of products sold — — — Gross profit — — — Selling, general and administrative expenses (216) (544) 109 (Gains) losses on dispositions of plant, equipment and timberlands, net — — — Operating income (loss) 216 544 (109) Non-operating income (expense) Interest expense — — — Other, net — — 1,393 Impairment charge — — — Income (loss) before income taxes 216 544 1,284 Income tax provision (benefit) — 29 (2,386) Income from discontinued operations $ 216 $ 515 $ 3,670 The amount set forth above in 2021 primarily represents reversal of sales and use tax reserves due to the expiration of statutes of limitation partially offset by legal costs incurred to pursue certain legal claims. In 2020, the amount set forth above primarily represents the settlement of a sales and use tax audit. The following table sets forth a summary of cash flows from discontinued operations which is included in the consolidated statements of cash flows: Year ended December 31, In thousands 2021 2020 2019 Net cash used by operating activities $ (996) $ (1,613) $ (10,942) Net cash used by investing activities — — (8,221) Net cash provided by financing activities — — — Change in cash and cash equivalents from discontinued operations $ (996) $ (1,613) $ (19,163)

Restructuring

Restructuring	12 Months Ended
	Dec. 31, 2021
Restructuring and Related Activities [Abstract]
Restructuring	5. RESTRUCTURING In the first quarter of 2020, we announced restructuring actions within the Composite Fibers operating segment. The actions primarily consisted of the consolidation of our metallizing operation from Gernsbach, Germany to our Caerphilly, U.K. site. In thousands Year ended December 31, 2020 Severance and benefit continuation $ 6,143 Accelerated depreciation 3,900 Inventory and spare parts 977 Other 91 Total $ 11,111 The restructuring charge is recorded under the caption “Costs of product sold” in the accompanying consolidated statements of income for the year ended December 31, 2020. With the exception of the severance and benefit continuation amounts, all other amounts accrued represent accelerated non-cash asset write-downs. As of December 31, 2021, the accrued and unpaid restructuring charge totaled approximately $0.3 million.

Asset Impairment

Asset Impairment	12 Months Ended
	Dec. 31, 2021
Asset Impairment Charges [Abstract]
Asset Impairment	6. ASSET IMPAIRMENT During the second quarter of 2020, in connection with an assessment of potential impairment of indefinite-lived intangible assets, we recorded a $0.9 million non-cash asset impairment charge related to a trade name intangible asset acquired in connection with our Composite Fibers segment’s 2013 Dresden acquisition. The charge was due to a change in the estimated fair value of the trade name, primarily driven by lower forecasted wallcover net sales associated with economic instability in Russia and Ukraine together with the impact of the COVID-19 pandemic on this business. The charge is recorded in the accompanying consolidated statement of income for 2020 under the caption “Selling, general and administrative expenses.” The fair value of the asset was estimated using a discounted cash flow model (Level 3 fair value classification) .

Gain on Dispositions of Plant,

Gain on Dispositions of Plant, Equipment and Timberlands	12 Months Ended
	Dec. 31, 2021
Property, Plant and Equipment [Abstract]
Gain on Dispositions of Plant, Equipment and Timberlands	7. GAIN ON DISPOSITIONS OF PLANT, EQUIPMENT AND TIMBERLANDS During 2021, 2020 and 2019, we completed the following sales of assets: Dollars in thousands Acres Proceeds Gain (loss) 2021 Timberlands 1,796 $ 5,567 $ 5,239 Other n/a — (170) Total $ 5,567 $ 5,069 2020 Timberlands 461 $ 1,413 $ 1,381 Other n/a — (49) Total $ 1,413 $ 1,332 2019 Timberlands 1,996 $ 1,705 $ 1,572 Other n/a 493 488 Total $ 2,198 $ 2,060

Revenue

Revenue	12 Months Ended
	Dec. 31, 2021
Disaggregation of Revenue [Abstract]
Revenue	8. REVENUE The following table sets forth disaggregated information pertaining to our net sales from contracts with customers: Year ended December 31, In thousands 2021 2020 2019 Revenue by product category Composite Fibers Food & beverage $ 298,859 $ 285,665 $ 278,786 Wallcovering 88,057 79,346 81,679 Technical specialties 92,351 84,320 79,535 Composite laminates 43,438 36,856 35,274 Metallized 34,102 38,902 46,392 556,807 525,089 521,666 Airlaid Materials Feminine hygiene 207,116 204,085 207,301 Specialty wipes 110,201 74,942 70,149 Tabletop 76,904 45,314 66,486 Home care 25,575 25,040 17,266 Adult incontinence 22,034 21,825 25,233 Other 28,420 20,203 19,572 470,250 391,409 406,007 Spunlace Consumer wipes 23,937 — — Critical cleaning 16,871 — — Health care 10,785 — — Hygiene 3,428 — — High performance 1,483 — — Beauty care 1,133 — — 57,637 — — Total $ 1,084,694 $ 916,498 $ 927,673 Revenue by geography Composite Fibers Europe, Middle East and Africa $ 333,608 $ 315,881 $ 312,218 Americas 134,753 128,385 132,845 Asia Pacific 88,446 80,823 76,603 556,807 525,089 521,666 Airlaid Materials Europe, Middle East and Africa 223,718 204,728 220,924 Americas 237,808 174,606 179,067 Asia Pacific 8,724 12,075 6,016 470,250 391,409 406,007 Spunlace Europe, Middle East and Africa 19,990 — — Americas 30,815 — — Asia Pacific 6,832 — — 57,637 — — Total $ 1,084,694 $ 916,498 $ 927,673

Earnings Per Share

Earnings Per Share	12 Months Ended
	Dec. 31, 2021
Earnings Per Share [Abstract]
Earnings Per Share	9. EARNINGS PER SHARE The following table sets forth the details of basic and diluted earnings (loss) per share (EPS): Year ended December 31, In thousands, except per share 2021 2020 2019 Net income (loss) $ 6,937 $ 21,298 $ (21,541) Weighted average common shares outstanding used in basic EPS 44,551 44,339 44,132 Common shares issuable upon exercise of dilutive stock options and PSAs / RSUs 373 275 — Weighted average common shares outstanding and common share equivalents used in diluted EPS 44,924 44,614 44,132 Earnings (loss) per share Continuing operations $ 0.15 $ 0.47 $ (0.57) Discontinued operations — 0.01 0.08 The following table sets forth the potential common shares outstanding for stock options that were not included in the computation of diluted EPS for the period indicated, because their effect would be anti-dilutive: Year ended December 31, In thousands 2021 2020 2019 Potential common shares 1,079 1,082 1,233

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income	12 Months Ended
	Dec. 31, 2021
Equity [Abstract]
Accumulated Other Comprehensive Income	10. ACCUMULATED OTHER COMPREHENSIVE INCOME The following table sets forth details of the changes in accumulated other comprehensive income (losses) for the three years ended December 31, 2021, 2020 and 2019. In thousands Currency translation adjustments Unrealized gain (loss) on cash flow hedges Change in pensions Change in other postretirement defined benefit plans Total Balance at January 1, 2021 $ (42,525) $ (2,496) $ (12,844) $ (788) $ (58,653) Other comprehensive income (loss) before reclassifications (net of tax) (27,232) 4,759 611 (79) (21,941) Amounts reclassified from accumulated other comprehensive income (net of tax) — (275) 751 (186) 290 Net current period other comprehensive income (loss) (27,232) 4,484 1,362 (265) (21,651) Balance at December 31, 2021 $ (69,757) $ 1,988 $ (11,482) $ (1,053) $ (80,304) Balance at January 1, 2020 $ (76,346) $ 4,316 $ (7,253) $ 1,387 $ (77,896) Other comprehensive income (loss) before reclassifications (net of tax) 33,821 (2,840) (6,202) (878) 23,901 Amounts reclassified from accumulated other comprehensive income (net of tax) — (3,972) 611 (1,297) (4,658) Net current period other comprehensive income (loss) 33,821 (6,812) (5,591) (2,175) 19,243 Balance at December 31, 2020 $ (42,525) $ (2,496) $ (12,844) $ (788) $ (58,653) Balance at January 1, 2019 $ (69,622) $ 2,199 $ (71,431) $ 1,414 $ (137,440) Other comprehensive income (loss) before reclassifications (net of tax) (6,724) 6,800 8,730 826 9,632 Amounts reclassified from accumulated other comprehensive income (net of tax) — (4,683) 55,448 (853) 49,912 Net current period other comprehensive income (loss) (6,724) 2,117 64,178 (27) 59,544 Balance at December 31, 2019 $ (76,346) $ 4,316 $ (7,253) $ 1,387 $ (77,896) The following table sets forth the amounts reclassified from accumulated other comprehensive income (losses) for the years indicated. Year ended December 31, In thousands 2021 2020 2019 Description Line Item in Statements of Income Cash flow hedges (Note 22) Gains on cash flow hedges $ (382) $ (5,503) $ (6,468) Costs of products sold Tax expense 22 1,448 1,785 Income tax provision (benefit) Net of tax (360) (4,055) (4,683) Loss on interest rate swaps 85 83 — Interest expense Tax expense — — — Income tax provision (benefit) Net of tax 85 83 — Total cash flow hedges (275) (3,972) (4,683) Retirement plan obligations (Note 13) Amortization of defined benefit pension plan items Prior service costs 47 48 216 Other, net Actuarial losses 792 651 2,842 Other, net Pension settlement — — 75,326 839 699 78,384 Tax benefit (88) (88) (22,936) Income tax provision (benefit) Net of tax 751 611 55,448 Amortization of defined benefit other plan items Prior service costs (233) (463) (10) Other, net Actuarial gains 47 (834) (852) Other, net (186) (1,297) (862) Tax expense — — 9 Income tax provision (benefit) Net of tax (186) (1,297) (853) Total reclassifications, net of tax $ 290 $ (4,658) $ 49,912

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Income Taxes	11. INCOME TAXES Income taxes are recognized for the amount of taxes payable or refundable for the current year and deferred tax liabilities and assets for the future tax consequences of events that have been recognized in our consolidated financial statements or tax returns. The effects of income taxes are measured based on enacted tax laws and rates. The provision for (benefit from) income taxes from continuing operations consisted of the following: Year ended December 31, In thousands 2021 2020 2019 Current taxes Federal $ (570) $ (4,989) $ (419) State 584 166 134 Foreign 20,561 18,470 14,014 20,575 13,647 13,729 Deferred taxes and other Federal (1,159) 540 (20,448) State 234 (1,183) (4,105) Foreign (12,694) (1,428) 1,582 (13,619) (2,071) (22,971) Income tax provision (benefit) $ 6,956 $ 11,576 $ (9,242) The following are the domestic and foreign components of pretax income (loss) from continuing operations: Year ended December 31, In thousands 2021 2020 2019 United States $ (44,682) $ (35,696) $ (107,455) Foreign 58,359 68,055 73,002 Total pretax income (loss) $ 13,677 $ 32,359 $ (34,453) The following table sets forth a reconciliation of the statutory federal income tax rate to our actual effective tax rate for continuing operations. Year ended December 31, 2021 2020 2019 Federal income tax provision at statutory rate 21.0 % 21.0 % 21.0 % State income taxes, net of federal income tax benefit 2.7 0.6 3.7 Foreign income tax rate differential (3.3) 3.4 2.0 Tax effect of tax credits (0.1) (10.2) 8.2 Provision for (resolution of) tax matters 23.6 12.4 (8.0) Rate changes due to enacted legislation 15.3 0.7 0.1 Change in reinvestment assertion 26.4 — — Effect of U.S. tax law change 2.8 (21.5) — Global Intangible Low-Taxed Income 18.7 7.1 (9.4) Stock-based compensation 3.9 1.4 (1.0) Nondeductible officer's compensation 3.9 1.0 (0.7) Valuation allowance (3.1) 11.7 4.3 Recognition of non-U.S. intangible tax basis (78.1) — — Capitalized transaction costs 8.9 — — Pension termination, settlement and related — 5.4 5.0 Prior year adjustments 7.1 4.5 1.8 Other 1.2 (1.7) (0.2) Actual tax rate 50.9 % 35.8 % 26.8 % The effective income tax rate for the year ended December 31, 2021 was unfavorably impacted by operating losses in the U.S. which generated no tax benefit, $25.6 million of restructuring and other non-recurring costs for which no tax benefit was recorded, and a $3.6 million tax charge related to unremitted earnings of a foreign subsidiary, offset in part by a $10.7 million benefit recorded in connection with the recognition of an intangible asset at a foreign subsidiary. The sources of deferred income taxes were as follows at December 31: In thousands 2021 2020 Reserves $ 1,060 $ 685 Environmental 3,970 4,481 Compensation 1,920 2,415 Pension 4,479 4,279 Post-retirement benefits 1,210 1,388 Research & development expenses 4,239 3,092 Tax carryforwards 45,729 16,703 Other 2,444 5,714 Deferred tax assets 65,051 38,757 Valuation allowance (24,526) (23,305) Net deferred tax assets 40,525 15,452 Property (93,164) (70,492) Intangible assets (14,063) (18,808) Inventories (37) — Other (5,201) (3,282) Deferred tax liabilities (112,465) (92,582) Net deferred tax liabilities $ (71,940) $ (77,130) Non-current deferred tax assets and liabilities are included in the following balance sheet captions: December 31, In thousands 2021 2020 Other assets $ 15,345 $ 1 Deferred income taxes 87,285 77,131 At December 31, 2021, we had federal, state and foreign tax net operating loss (“NOL”) carryforwards of $98.7 million, $198.8 million, and $40.2 million, respectively. These NOL carryforwards are available to offset future taxable income, if any. $6.2 million of the federal NOL carryforward expires in 2037; the residual $92.5 million of the federal NOL never expires. The state NOL carryforwards expire at various times and in various amounts beginning in 2022. Certain foreign NOL carryforwards begin to expire after 2025. The federal and state NOL carryforwards on the income tax returns filed included unrecognized tax benefits taken in prior years. The deferred tax assets recognized for financial statement purposes for such NOL carryforwards are presented net of these unrecognized tax benefits. In addition, we had various federal tax credit carryforwards totaling $14.2 million which begin to expire after 2034 and state tax credit carryforwards totaling $3.4 million, which begin to expire in 2028. As of December 31, 2021 and 2020, we had a valuation allowance of $24.5 million and $23.3 million, respectively, against net deferred tax assets, primarily due to uncertainty regarding the ability to utilize federal, state and foreign tax NOL carryforwards and certain state tax credits. In assessing the need for a valuation allowance, management considers all available positive and negative evidence in its analysis. Based on this analysis, we recorded a valuation allowance for the portion of deferred tax assets where the weight of available evidence indicated it is more likely than not that the deferred tax assets will not be realized. Tax credits and other incentives reduce tax expense in the year the credits are claimed. We recorded tax credits of $0.0 million, $3.3 million and $2.8 million in 2021, 2020 and 2019, respectively, related to research and development credits. At December 31, 2021 and 2020, unremitted earnings of certain subsidiaries outside the United States deemed to be indefinitely reinvested totaled $107.0 million and $109.0 million, respectively. Because the unremitted earnings of those subsidiaries are deemed to be indefinitely reinvested as of December 31, 2021 and because we have no need for or plans to repatriate such earnings, no deferred tax liability has been recognized in our consolidated financial statements with regard to those subsidiaries. During 2021, we designated unremitted earnings of a subsidiary as not indefinitely reinvested, and as a result, recorded a $3.6 million deferred tax charge with regard to the unremitted earnings of that subsidiary. As of December 31, 2021, 2020 and 2019, we had $55.7 million, $46.3 million and $30.5 million of gross unrecognized tax benefits, respectively. As of December 31, 2021, if such benefits were to be recognized, approximately $51.1 million would be recorded as a component of income tax expense, thereby affecting our effective tax rate. A reconciliation of the beginning and ending balances of the total amounts of gross unrecognized tax benefits is as follows: In thousands 2021 2020 2019 Balance at January 1 $ 46,259 $ 30,458 $ 29,620 Increases in tax positions for prior years 38 13,866 2,803 Decreases in tax positions for prior years (638) (72) (2,892) Acquisition related: Purchase Accounting 12,718 — — Increases in tax positions for current year 3,683 4,400 4,552 Settlements — (1,101) (309) Lapse in statutes of limitation (6,400) (1,292) (3,316) Balance at December 31 $ 55,660 $ 46,259 $ 30,458 We, or one of our subsidiaries, file income tax returns with the United States Internal Revenue Service, as well as various state and foreign authorities. The following table summarizes tax years that remain subject to examination by major jurisdiction: Open Tax Years Jurisdiction Examinations not yet initiated Examination in progress United States Federal 2014, 2015; 2018 - 2021 N/A State 2017 - 2021 N/A Canada (1) 2014 - 2018; 2021 2019 - 2020 Germany (1) 2020 - 2021 2016 - 2019 France 2019 - 2021 N/A United Kingdom 2020 - 2021 N/A Philippines 2020 - 2021 2018, 2019 (1) Includes provincial or similar local jurisdictions, as applicable. The amount of income taxes we pay is subject to ongoing audits by federal, state and foreign tax authorities, which often result in proposed assessments. Management performs a comprehensive review of its global tax positions on a quarterly basis and accrues amounts for uncertain tax positions. Based on these reviews and the result of discussions and resolutions of matters with certain tax authorities and the closure of tax years subject to tax audit, reserves are adjusted as necessary. However, future results may include favorable or unfavorable adjustments to our estimated tax liabilities in the period the assessments are determined or resolved or as such statutes are closed. Due to potential for resolution of federal, state and foreign examinations, and the expiration of various statutes of limitation, it is reasonably possible our gross unrecognized tax benefits balance may decrease within the next twelve months by a range of zero to $1.7 million. The majority of this range relates to tax positions taken in Canada and the U.S. We recognize interest and penalties related to uncertain tax positions as income tax expense. The following table summarizes information related to interest and penalties on uncertain tax positions. $3.0 million of penalty accruals and $1.2 million of interest accruals were recorded in 2021 through purchase accounting: As of or for the year ended December 31, In thousands 2021 2020 2019 Accrued interest payable $ 3,947 $ 1,792 $ 424 Interest expense (income) 974 927 (649) Penalties 3,020 — —

Stock-Based Compensation

Stock-Based Compensation	12 Months Ended
	Dec. 31, 2021
Share-based Payment Arrangement [Abstract]
Stock-Based Compensation	12. STOCK-BASED COMPENSATION Our Amended and Restated Long-Term Incentive Plan (the “LTIP”) provides for the issuance of Glatfelter common stock to eligible participants in the form of restricted stock units, restricted stock awards, non-qualified stock options, performance shares, incentive stock options and performance units. As of December 31, 2021, there were 1,628,094 shares of common stock available for future issuance under the LTIP. Pursuant to the terms of the LTIP, we have issued to eligible participants restricted stock units, performance share awards and stock only stock appreciation rights (“SOSARs”). Restricted Stock Units (“RSUs”) and Performance Share Awards (“PSAs”) Awards of RSUs and PSAs are made under our LTIP. The vesting of RSUs is generally based on the passage of time, generally over a three-year period or in certain instances the RSUs were issued with five-year cliff vesting. PSAs are issued to members of management and vesting is based on achievement of cumulative financial performance targets covering a two-year period followed by an additional one-year service period. The performance measures include a minimum, target and maximum performance level providing the grantees an opportunity to receive more or less shares than targeted depending on actual financial Performance. In addition, beginning in 2019, PSA awards include a modifier based on the three-year total shareholder return relative to a broad market index. For RSUs, the grant date fair value of the awards, or the closing price per common share on the date of the award, is used to determine the amount of expense to be recognized over the applicable service period. For PSAs, the grant date fair value is estimated using a lattice model. The significant inputs include the stock price, volatility, dividend yield, and risk-free rate of return. Settlement of RSUs and PSAs will be made in shares of our common stock currently held in treasury. The following table summarizes RSU and PSA activity during the past three years: Units 2021 2020 2019 Balance at January 1, 1,071,652 896,463 756,786 Granted 374,931 400,854 600,820 Forfeited (103,499) (89,483) (223,677) Shares delivered (231,702) (136,182) (237,466) Balance at December 31, 1,111,382 1,071,652 896,463 In thousands 2021 2020 2019 Compensation expense $ 5,063 $ 5,655 $ 3,543 The amount granted in 2021, 2020 and 2019 includes 162,480, 171,150 and 218,422 PSAs, respectively, exclusive of reinvested dividends. The weighted average grant date fair value per unit for awards in 2021, 2020 and 2019 was $16.71, $16.65 and $15.86, respectively. As of December 31, 2021, unrecognized compensation expense for outstanding RSUs and PSAs totaled $3.6 million. The weighted average remaining period over which the expense will be recognized is 1.4 years. Stock Only Stock Appreciation Rights The following table sets forth information related to outstanding SOSARs: 2021 2020 2019 SOSARs Shares Wtd Avg Exercise Price Shares Wtd Avg Exercise Price Shares Wtd Avg Exercise Price Outstanding at January 1, 1,082,413 $ 20.40 1,291,947 $ 20.05 2,334,742 $ 18.08 Granted — — — — — — Exercised (3,300) 15.61 (58,460) 12.85 (596,360) 15.56 Canceled / forfeited — — (151,074) 20.25 (446,435) 21.06 Outstanding at December 31, 1,079,113 $ 20.42 1,082,413 $ 20.40 1,291,947 $ 20.05 Exercisable at December 31, 1,079,113 20.42 1,082,413 20.40 1,291,947 20.05 Vested and expected to vest 1,079,113 1,082,413 1,291,947 Compensation expense (in thousands) $ — $ — $ 40

Retirement Plans and Other Post

Retirement Plans and Other Post-Retirement Benefits	12 Months Ended
	Dec. 31, 2021
Retirement Benefits [Abstract]
Retirement Plans and Other Post-Retirement Benefits	RETIREMENT PLANS AND OTHER POST-RETIREMENT BENEFITS Prior to May 2019, we provided non-contributory retirement benefits under both funded and unfunded plans to all U.S. employees and to certain non-U.S. employees in Germany. As discussed in more detail below, we terminated our U.S. qualified pension plan effective June 30, 2019 and replaced the benefits with an enhanced 401(k) defined contribution plan. Participation and benefits under the plans were based upon the employees’ date of hire. U.S. benefits accrued under the terminated pension plan was based on a final average pay formula or cash balance formula for salaried employees. We froze qualified pension plan benefits as of May 31, 2019 and terminated the plan June 30, 2019. During 2019, all plan liabilities were settled by either a lump sum distribution or assumed by a third-party in exchange for a transfer of assets from the pension plan trust fund. After giving effect to these transactions, we recorded a $309.5 million reduction in both the projected benefit obligation and the plan assets. In addition, in accordance with pension plan settlement accounting, we recorded a $75.3 million settlement charge reflecting the recognition of amounts previously included in accumulated other comprehensive income. As a result of terminating the qualified plan and settling the associated liabilities, as of December 31, 2020, $53.4 million of assets remained in the pension trust and was included in cash and cash equivalents in the accompanying consolidated balance sheet based on the nature of the underlying assets. In addition, during 2020, we received $2.3 million as a post-settlement adjustment with the third party. After transferring $14.1 million to a suspense account to fund future 401(k) contributions and paying $8.3 million of excise taxes, approximately $33.3 million was available for general corporate purposes. In December 2019, our Board of Directors approved the freezing of benefit accruals in the non-qualified pension plan for active participants effective December 31, 2019. As of January 1, 2020, each active participant’s frozen non-qualified pension benefit was transferred to a newly approved Deferred Compensation Plan non-qualified benefit plan and will earn interest credits going forward. The Deferred Compensation Plan also provides for employer contributions and, beginning in 2022, the Plan may provide for elective employee deferrals. Under the Deferred Compensation Plan, participants are eligible to receive annual Company contributions that such participants would have received under our 401(k) Savings Plan, but for certain limitations imposed by the Internal Revenue Code on 401(k) plan contributions (“Company Contributions”). Unless otherwise determined by the Compensation Committee, Company Contributions under the Deferred Compensation Plan will not exceed 7% of a participant’s annual eligible compensation that is in excess of the Internal Revenue Code compensation limit for 401(k) plans. As of December 31, 2021 and 2020, the remaining non-contributory pension plans are unfunded non-qualified plans. Non-U.S. benefits were based on average salary and years of service. We use a December 31-measurement date for all of our defined benefit plans. We also provide certain health care benefits to eligible U.S.-based retired employees. Participation in the plan is closed to any salaried employees hired after December 31, 2006. These benefits include a comprehensive medical plan for retirees prior to age 65 and a fixed payment to certain retirees over age 65 to help defray the costs of Medicare. Claims are paid as reported. All information presented in the following tables represents amounts attributable to continuing operations. Pension Benefits Other Benefits In thousands 2021 2020 2021 2020 Change in Benefit Obligation Balance at beginning of year $ 47,333 $ 45,714 $ 5,967 $ 6,511 Service cost — — 29 — Interest cost 974 1,210 127 184 Benefits paid (2,247) (2,420) (1,078) (1,611) Participant contributions — — — — Plan amendments — — 6 — Actuarial (gain)/loss (203) 1,749 79 883 Effect of currency rate changes (972) 1,080 — — Balance at end of year $ 44,885 $ 47,333 $ 5,130 $ 5,967 Change in Plan Assets Fair value of plan assets at beginning of year $ — $ 53,401 $ — $ — Reversion of excess plan assets — (53,401) — — Total contributions 2,247 2,420 1,078 1,611 Benefits paid (2,247) (2,420) (1,078) (1,611) Fair value of plan assets at end of year — — — — Funded status at end of year $ (44,885) $ (47,333) $ (5,130) $ (5,967) As of December 31, 2021, the non-qualified plans have an unfunded projected benefit obligation of $44.9 million. Amounts recognized in the consolidated balance sheets consist of the following as of December 31: Pension Benefits Other Benefits In thousands 2021 2020 2021 2020 Current liabilities $ (2,096) $ (2,271) $ (852) $ (1,167) Other long-term liabilities (42,789) (45,062) (4,278) (4,800) Net amount recognized $ (44,885) $ (47,333) $ (5,130) $ (5,967) The components of amounts recognized as “Accumulated other comprehensive income” consist of the following on a pre-tax basis: Pension Benefits Other Benefits In thousands 2021 2020 2021 2020 Prior service credit (cost) $ (172) $ (226) $ (125) $ 108 Net actuarial gain (loss) (14,189) (15,612) (382) (350) The weighted-average assumptions used in computing the benefit obligations above were as follows: Pension Benefits Other Benefits 2021 2020 2021 2020 Discount rate – benefit obligation 2.42 % 2.17 % 2.70 % 2.30 % The discount rates set forth above were estimated based on the modeling of expected cash flows for each of our benefit plans and selecting a portfolio of high-quality debt instruments with maturities matching the respective cash flows of each plan. The resulting discount rates as of December 31, 2021 ranged from 1.10% to 2.88% for pension plans and was 2.70% for the other benefit plans. Information for pension plans with an accumulated benefit obligation in excess of plan assets was as follows: In thousands 2021 2020 Projected benefit obligation $ 44,885 $ 47,333 Accumulated benefit obligation 44,885 47,333 Fair value of plan assets — — Net periodic benefit (income) expense includes the following components: Year Ended December 31, In thousands 2021 2020 2019 Pension Benefits Service cost $ — $ — $ 1,269 Interest cost 974 1,210 11,495 Expected return on plan assets — — (13,724) Amortization of prior service cost 48 48 246 Amortization of actuarial loss 790 655 2,759 Termination benefits — — 1,259 One-time settlement charge — — 75,356 Total net periodic benefit expense $ 1,812 $ 1,913 $ 78,660 Other Benefits Service cost $ 29 $ — $ — Interest cost 127 184 313 Amortization of prior service credit (233) (458) — Amortization of actuarial loss (gain) 47 (834) (892) Total net periodic benefit income $ (30) $ (1,108) $ (579) Other changes in plan assets and benefit obligations recognized in other comprehensive income (loss) were as follows: Year Ended December 31, In thousands 2021 2020 Pension Benefits Actuarial (gain) loss $ (203) $ 1,750 Recognized prior service costs (48) (48) Recognized actuarial losses (790) (655) Total recognized in other comprehensive (income) loss (1,041) 1,047 Total recognized in net periodic benefit cost and other comprehensive loss $ 771 $ 2,960 Other Benefits Actuarial loss $ 79 $ 883 Amortization of actuarial gain (loss) (47) 834 Total recognized in other comprehensive loss 32 1,717 Total recognized in net periodic benefit cost and other comprehensive loss $ 2 $ 609 The weighted-average assumptions used in computing the net periodic benefit expense information above were as follows: Year Ended December 31, 2021 2020 2019 Pension Benefits Discount rate – benefit expense 2.17 % 2.70 % 4.34 % Future compensation growth rate — — 2.50 % Expected long-term rate of return on plan assets — — 4.50 % Other Benefits Discount rate – benefit expense 2.30 % 3.11 % 4.19 % For 2019, the development of the expected long-term rate of return assumption was based on the historical returns and expected future returns for each asset class, as well as the target asset allocation of the pension portfolio. Assumed health care cost trend rates used to determine benefit obligations at December 31 were as follows: 2021 2020 Health care cost trend rate assumed for next year 5.30 % 5.30 % Rate to which the cost trend rate is assumed to decline (the ultimate trend rate) 4.50 % 4.50 % Year that the rate reaches the ultimate rate 2037 2037 Cash Flow Benefit payments expected to be made under our non-qualified pension plans and other benefit plans are summarized below: In thousands Pension Benefits Other Benefits 2022 $ 2,096 $ 852 2023 2,057 582 2024 2,013 468 2025 1,968 436 2026 1,909 427 2027 through 2031 17,208 1,471 Defined Contribution Plans We maintain 401(k) plans for substantially all U.S.-based employees. Employees may contribute up to 50% of their earnings, subject to certain restrictions. Through the end of May 2019, the Company matched a portion of the employees’ contribution in cash. We currently provide a minimum company contribution equal to 7% of eligible compensation. In addition, we have provided discretionary contributions resulting in total contributions equal to 10% and 11% of compensation in 2021 and 2020, respectively. The expense associated with our 401(k) plan was $2.4 million, $2.0 million and $1.9 million in 2021, 2020 and 2019, respectively.

Inventories

Inventories	12 Months Ended
	Dec. 31, 2021
Inventory Disclosure [Abstract]
Inventories	INVENTORIES Inventories, net of reserves were as follows: December 31, In thousands 2021 2020 Raw materials $ 87,448 $ 55,466 In-process and finished 139,058 97,109 Supplies 53,014 43,655 Total $ 279,520 $ 196,230

Plant, Equipment and Timberland

Plant, Equipment and Timberlands	12 Months Ended
	Dec. 31, 2021
Property, Plant and Equipment [Abstract]
Plant, Equipment and Timberlands	PLANT, EQUIPMENT AND TIMBERLANDS Plant, equipment and timberlands at December 31 were as follows: In thousands 2021 2020 Land and buildings $ 236,347 $ 173,646 Machinery and equipment 838,999 754,737 Furniture, fixtures, and other 219,111 160,922 Accumulated depreciation (591,803) (569,386) 702,654 519,919 Construction in progress 56,156 23,330 Timberlands, less depletion 2 18 Total $ 758,812 $ 543,267 As of December 31, 2021 and 2020, we had $7.1 million and $3.1 million, respectively, of accrued capital expenditures.

Goodwill and Intangible Assets

Goodwill and Intangible Assets	12 Months Ended
	Dec. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	16. GOODWILL AND INTANGIBLE ASSETS The following table sets forth information with respect to goodwill and other intangible assets: In thousands December 31, Acquisitions Amortization Translation December 31, Goodwill Composite Fibers $ 84,586 $ — $ — $ (6,148) $ 78,438 Airlaid Materials 79,783 35,793 — (6,090) 109,486 Spunlace — 48,855 (614) 48,241 Total $ 164,369 $ 84,648 $ — $ (12,852) $ 236,165 Other Intangible Assets Composite Fibers Tradename - non-amortizing $ 3,902 $ — $ — $ (301) $ 3,601 Technology and related 41,578 — — (2,964) 38,614 Accumulated amortization (18,636) — (1,845) 1,257 (19,224) Net 22,942 — (1,845) (1,707) 19,390 Customer relationships and related 37,535 — — (2,796) 34,739 Accumulated amortization (21,290) — (2,478) 1,664 (22,104) Net 16,245 — (2,478) (1,132) 12,635 Airlaid Materials Tradename 3,960 — — 525 4,485 Accumulated amortization (456) — (190) 43 (603) Net 3,504 — (190) 568 3,882 Technology and related 20,053 — — (2,228) 17,825 Accumulated amortization (3,591) — (1,268) 307 (4,552) Net 16,462 — (1,268) (1,921) 13,273 Customer relationships and related 26,636 20,000 — (2,051) 44,585 Accumulated amortization (7,856) — (3,249) 593 (10,512) Net 18,780 20,000 (3,249) (1,458) 34,073 Spunlace Products and Tradenames — 27,649 — (26) 27,623 Accumulated amortization — — (253) — (253) Net — 27,649 (253) (26) 27,370 Technology and related — 14,561 — (14) 14,547 Accumulated amortization — — (202) — (202) Net — 14,561 (202) (14) 14,345 Customer relationships and related — 28,030 — (27) 28,003 Accumulated amortization — — (268) — (268) Net — 28,030 (268) (27) 27,735 Total intangibles 133,664 90,240 — (9,882) 214,022 Total accumulated amortization (51,829) — (9,753) 3,864 (57,718) Net intangibles $ 81,835 $ 90,240 $ (9,753) $ (6,018) $ 156,304 The following table sets forth information pertaining to amortization of intangible assets: In thousands 2021 2020 2019 Aggregate amortization expense: $ 9,753 $ 8,014 $ 7,986 Estimated amortization expense: 2022 13,966 2023 13,966 2024 13,966 2025 13,966 2026 13,966 Intangible assets are amortized on a straight-line basis, except for Composite Fiber's indefinite life tradename. We amortize trade and product names over 14 years to 20 years; technical know-how over 7 years to 20 years; and customer relationships over 11 years to 20 years. The remaining weighted average useful life of intangible assets was 13.2 years at December 31, 2021.

Other Long-Term Assets

Other Long-Term Assets	12 Months Ended
	Dec. 31, 2021
Other Assets, Noncurrent [Abstract]
Other Long-Term Assets	OTHER LONG-TERM ASSETS Other long-term assets consist of the following: December 31, In thousands 2021 2020 Right-of-use asset operating leases $ 27,186 $ 11,789 Deferred taxes 15,345 2 Restricted cash 8,378 10,084 Other 41,851 22,610 Total $ 92,760 $ 44,485

Other Current Liabilities

Other Current Liabilities	12 Months Ended
	Dec. 31, 2021
Other Liabilities Disclosure [Abstract]
Other Current Liabilities	OTHER CURRENT LIABILITIES Other current liabilities consist of the following: December 31, In thousands 2021 2020 Accrued payroll and benefits $ 25,572 $ 21,726 Other accrued compensation and retirement benefits 5,633 9,376 Income taxes payable 11,746 4,781 Accrued rebates 6,327 4,002 Other accrued expenses 50,160 31,208 Total $ 99,438 $ 71,093

Leases

Leases	12 Months Ended
	Dec. 31, 2021
Leases [Abstract]
Leases	LEASES We enter into a variety of arrangements in which we are the lessee for the use of automobiles, forklifts and other production equipment, production facilities, warehouses and office space. We determine if an arrangement contains a lease at inception. All our lease arrangements are operating leases and are recorded in the consolidated balance sheet under the caption “Other assets” and the lease obligation is under “Other current liabilities” and “Other long-term liabilities.” We currently do not have any finance leases. Operating lease right of use (“ROU”) assets and operating lease liabilities are recognized based on the present value of the future minimum lease payments over the lease term at commencement date. ROU assets also include any initial direct costs incurred and any lease payments made at or before the lease commencement date, less lease incentives received. We use our incremental borrowing rate based on information available at the commencement date in determining the lease liabilities as our leases generally do not provide an implicit rate. Lease terms may include options to extend or terminate when we are reasonably certain that the option will be exercised. Lease expense is recognized on a straight-line basis over the lease term. We also have arrangements with both lease and non-lease components. We elected the practical expedients not to separate non-lease components from lease components for our real estate and automobile leases and the lack of need to reassess classification. We elected to apply the short-term lease measurement and recognition exemption in which ROU assets and lease liabilities are not recognized for arrangements less than twelve months in duration. The following table sets forth information related to our leases as of the periods indicated. December 31, Dollars in thousands 2021 2020 Right of use asset $ 27,186 $ 11,789 Weighted average discount rate 3.31 % 2.94 % Weighted average remaining maturity ( years ) 26.0 5.5 The following table sets forth operating lease expense for the periods indicated: December 31, In thousands 2021 2020 Operating lease expense $ 5,742 $ 5,876 The following table sets forth required minimum lease payments for the years indicated: In thousands 2022 $ 6,479 2023 3,921 2024 3,028 2025 2,618 2026 2,541 Thereafter 38,588

Long-Term Debt

Long-Term Debt	12 Months Ended
	Dec. 31, 2021
Debt Disclosure [Abstract]
Long-Term Debt	LONG-TERM DEBT Long-term debt is summarized as follows: December 31, In thousands 2021 2020 Revolving credit facility, due Sep. 2026 $ 10,000 $ 36,813 4.750% Senior Notes, due Oct. 2029 500,000 — Term loan, due Feb 2024 218,026 249,715 2.40% Term Loan, due Jun 2022 809 2,629 2.05% Term Loan, due Mar 2023 7,556 14,737 1.30% Term Loan, due Jun 2023 2,427 4,382 1.55% Term Loan, due Sep 2025 5,204 7,143 1.10% Term Loan, due Mar 2024 9,267 — 0.57% Term Loan, due Jul 2023 22,652 — Total long-term debt 775,941 315,419 Less current portion (26,437) (25,057) Unamortized deferred issuance costs (11,429) (1,898) Long-term debt, net of current portion $ 738,075 $ 288,464 On September 2, 2021, we entered into a restatement agreement as part of a Fourth Amended and Restated $400 million Revolving Credit Facility and a €220.0 million Term Loan (collectively, the “Credit Facility ”) which matures September 6, 2026 and February 8, 2024, respectively. Revolving Loans borrowings are available in U.S. Dollars, Euros, British Pound Sterling, and Canadian Dollars and the borrowing of Term Loans are available in Euros. The principal amount of the Term Loan amortizes in consecutive quarterly installments of principal, with each such quarterly installment to be in an amount equal to 1.25% of the Term Loan funded. Borrowing rates for the Revolving Loans are determined at our option at the time of each borrowing. For all U.S. Dollar denominated Revolving Loan borrowings, the borrowing rate is either, (a) the bank’s base rate which is equal to the greater of i) the prime rate; ii) the overnight bank funding rate plus 50 basis points; or iii) the daily Euro-rate plus 100 basis points plus an applicable spread over either i), ii) or iii) ranging from 12.5 basis points to 100 basis points based on the Company’s leverage ratio and its corporate credit ratings determined by Standard & Poor’s Rating Services and Moody’s Investor Service, Inc. (the “Corporate Credit Rating”); or (b) the daily Euro-rate or EURIBOR-rate plus an applicable margin ranging from 112.5 basis points to 200 basis points based on the Company’s leverage ratio and the Corporate Credit Rating. For the Term Loan and non-U.S. Dollar denominated borrowings, interest is based on (b) above. The Credit Agreement contains a number of customary covenants for financings of this type that, among other things, restrict our ability to dispose of or create liens on assets, incur additional indebtedness, limits certain intercompany financing arrangements, make acquisitions and engage in mergers or consolidations. The Credit Agreement also specifies a maximum ratio of consolidated total net debt to consolidated adjusted EBITDA, also known as the leverage ratio. Subsequent to the Jacob Holm acquisition, we must maintain a maximum leverage ratio of no more than 5.25 to 1.00, which steps down to 4.00 to 1.00 after 24 months of the Jacob Holm acquisition. The Credit Agreement also contains covenants requiring a minimum interest coverage ratio and provisions limiting our ability to, among other things, (i) incur debt and guaranty obligations, (ii) incur liens, (iii) make loans, advances, investments and acquisitions, (iv) merge or liquidate, or (v) sell or transfer assets. In addition, the Credit Agreement provides that if, and for so long as, the Debt Rating (as defined in the Credit Agreement) is below “BB” by Standard & Poor’s or below “Ba2” by Moody’s, obligations under the Credit Agreement will be secured by substantially all domestic assets of the Company and the guarantors, subject to certain exceptions and limitations. All remaining principal outstanding and accrued interest under the Revolving Credit Facility and the Term Loan will be due and payable on September 2, 2026 and February 8, 2024, respectively. As of December 31, 2021, the leverage ratio, as calculated in accordance with the definition in our Credit Agreement, was 3.8x. A breach of these requirements would give rise to certain remedies under the Revolving Credit Facility, among which is the termination of the agreement. On October 25, 2021, we issued $500 million aggregate principal amount of 4.750% senior notes due 2029 (the “Notes”). The Notes are guaranteed on a senior unsecured basis, jointly and severally, by each of our existing and future domestic restricted subsidiaries that guarantees our obligations under the Credit Agreement, and/or certain other indebtedness (the “Guarantees”). The Notes were issued pursuant to an indenture dated as of October 25, 2021 (the “Base Indenture”), as supplemented by the supplemental indenture dated as of October 25, 2021 (the “Supplemental Indenture” and, together with the Base Indenture, the “Indenture”) among the Company, certain subsidiaries of the Company party thereto (the “Guarantors”) and Wilmington Trust, National Association, as trustee. The net proceeds from the offering of the Notes, together with cash on hand, were used to pay the purchase price of the Jacob Holm acquisition, to repay certain indebtedness of Jacob Holm, to repay outstanding revolving borrowings under the Revolving Credit Facility, and to pay estimated fees and expenses. The Notes will mature on November 15, 2029. Interest on the Notes accrues at the rate of 4.750% per annum and is payable semi-annually in arrears on May 15 and November 15 of each year, commencing on May 15, 2022. The Notes are redeemable, in whole or in part, at any time at the redemption prices specified in the underlying indenture. Prior to November 15, 2024, we may redeem some or all of the Notes at a "make-whole" premium as specified. The Notes contain various covenants customary to indebtedness of this nature, including limitations on i) the amount of indebtedness that may be incurred; ii) certain restricted payments including common stock dividends; iii) distributions from certain subsidiaries; iv) sales of assets; v) transactions amongst subsidiaries; and vi) incurrence of liens on assets. In addition, the Notes contain cross default provisions that could result in all such notes becoming due and payable in the event of a failure to repay debt outstanding under the Credit Agreement at maturity or a default under the Credit Agreement that accelerates the debt outstanding thereunder. As of December 31, 2021, we met all of the requirements of our debt covenants. Glatfelter Gernsbach GmbH (“Gernsbach”), a wholly-owned subsidiary of ours, entered into a series of borrowing agreements with IKB Deutsche Industriebank AG, Düsseldorf (“IKB”). Each of the borrowings require quarterly repayments of principal and interest and provide for representations, warranties and covenants customary for financings of these types. The financial covenants contained in each of the IKB loans, which relate to the minimum ratio of consolidated EBITDA to consolidated interest expense and the maximum ratio of consolidated total net debt to consolidated adjusted EBITDA, will be calculated by reference to our Credit Agreement. In 2021, Gernsbach also entered into two fixed-rate non-amortizing term loans with certain financial institutions. Similar to the IKB loans discussed above, the financial covenants of these borrowings are calculated by reference to the Credit Agreement. Aggregated unamortized deferred debt issuance costs incurred in connection with all of our outstanding debt totaled $11.4 million at December 31, 2021. The deferred costs are being amortized on a straight-line basis over the life of the underlying instruments. Amortization expense related to deferred debt issuance costs totaled $0.9 million in 2021. The following schedule sets forth the amortization of our term loan agreements together with the maturity of our other long-term debt during the indicated year. In thousands 2022 $ 26,438 2023 42,938 2024 195,525 2025 1,040 2026 10,000 Thereafter 500,000 Glatfelter Corporation guarantees all debt obligations of its subsidiaries. All such obligations are recorded in these consolidated financial statements. As of December 31, 2021 and 2020, we had $6.7 million and $7.3 million, respectively, of letters of credit issued to us by certain financial institutions. The letters of credit, which reduce amounts available under our revolving credit facility, provide financial assurances for the performance of long-term monitoring activities associated with the Fox River environmental matter and for the benefit of certain state workers compensation insurance agencies in conjunction with our self-insurance program. We bear the credit risk on this amount to the extent that we do not comply with the provisions of certain agreements. No amounts are outstanding under the letters of credit.

Fair Value of Financial Instrum

Fair Value of Financial Instruments	12 Months Ended
	Dec. 31, 2021
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments	FAIR VALUE OF FINANCIAL INSTRUMENTS The amounts reported on the consolidated balance sheets for cash and cash equivalents, accounts receivable and short-term debt approximate fair value. The following table sets forth the carrying value and fair value of long-term debt as of December 31: 2021 2020 In thousands Carrying Fair Carrying Fair Variable rate debt $ 10,000 $ 10,000 $ 36,813 $ 36,813 4.750% Senior Notes, due Oct. 2029 500,000 516,875 — — Term loan, due Feb. 2024 218,026 218,026 249,715 249,715 2.40% Term Loan 809 813 2,629 2,651 2.05% Term Loan 7,556 7,616 14,737 14,873 1.30% Term Loan 2,427 2,433 4,382 4,384 1.55% Term Loan 5,204 5,234 7,143 7,210 1.10% Term Loan 9,267 9,252 — — 0.57% DZ Bank 22,652 22,657 — — Total $ 775,941 $ 792,906 $ 315,419 $ 315,646 The values set forth above are based on observable inputs and other relevant market data (Level 2). The fair value of financial derivatives is set forth below in Note 22 – “ Financial Derivatives and Hedging Activities. ”

Financial Derivatives and Hedgi

Financial Derivatives and Hedging Activities	12 Months Ended
	Dec. 31, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Financial Derivatives and Hedging Activities	FINANCIAL DERIVATIVES AND HEDGING ACTIVITIES As part of our overall risk management practices, we enter into financial derivatives primarily designed to either i) hedge foreign currency risks associated with forecasted transactions – “cash flow hedges”; ii) mitigate the impact that changes in currency exchange rates have on intercompany financing transactions and foreign currency denominated receivables and payables – “foreign currency hedges”; or iii) convert variable interest rate debt to fixed rates. Derivatives Designated as Hedging Instruments - Cash Flow Hedges We use currency forward contracts as cash flow hedges to manage our exposure to fluctuations in the currency exchange rates on certain forecasted production costs or capital expenditures expected to be incurred over a maximum of eighteen months. Currency forward contracts involve fixing the EUR-USD exchange rate or USD-CAD for delivery of a specified amount of foreign currency on a specified date. We designate certain currency forward contracts as cash flow hedges of forecasted raw material purchases, certain production costs or capital expenditures with exposure to changes in foreign currency exchange rates. Changes in the fair value of derivatives that are designated and qualify as cash flow hedges of foreign exchange risk are deferred as a component of accumulated other comprehensive income in the accompanying consolidated balance sheets. With respect to hedges of forecasted raw material purchases or production costs, the amount deferred is subsequently reclassified into costs of products sold in the period that inventory produced using the hedged transaction affects earnings. For hedged capital expenditures, deferred gains or losses are reclassified and included in the historical cost of the capital asset and subsequently affect earnings as depreciation is recognized. We had the following outstanding derivatives that were used to hedge foreign exchange risks associated with forecasted transactions and designated as hedging instruments: December 31, In thousands 2021 2020 Derivative Sell/Buy - sell notional Euro / British Pound 18,823 18,638 Philippine Peso / Euro — 18,522 U.S. Dollar / British Pound 16,205 — U.S. Dollar / Euro 658 1,041 Canadian Dollar / U.S. Dollar — 70 Sell/Buy - buy notional Euro / Philippine Peso 896,291 853,686 British Pound / Philippine Peso 1,121,183 1,081,791 Euro / U.S. Dollar 108,467 69,324 U.S. Dollar / Canadian Dollar 36,904 34,847 These contracts have maturities of eighteen months or less. In October 2019, we entered into a €180 million notional value floating-to-fixed interest rate swap agreement with certain financial institutions and designated the swap as a hedge of interest expense on our €180 million Term loan. Under the terms of the swap, we will pay a fixed interest rate of the applicable margin plus 0.0395% on €180 million of the underlying variable rate term loan. We will receive the greater of 0.00% or EURIBOR. Derivatives Designated as Hedging Instruments – Net Investment Hedge The €220 million Term Loan discussed in Note 20 – “ Long-Term Debt” is designated as a net investment hedge of our Euro functional currency foreign subsidiaries. During 2021, we recognized a pre-tax gain of $18.6 million and in 2020 a pre-tax loss of $21.1 million on the remeasurement of the term loan from changes in currency exchange rates. Such amounts are recorded as a component of Other Comprehensive Income (Loss). Derivatives Not Designated as Hedging Instruments - Foreign Currency Hedges We also enter into forward foreign exchange contracts to mitigate the impact changes in currency exchange rates have on balance sheet monetary assets and liabilities. None of these contracts are designated as hedges for financial accounting purposes and, accordingly, changes in value of the foreign exchange forward contracts and in the offsetting underlying on-balance-sheet transactions are reflected in the accompanying consolidated statements of income (loss) under the caption “Other, net.” December 31, In thousands 2021 2020 Derivative Sell/Buy - sell notional U.S. Dollar / British Pound 26,600 25,250 Euro / British Pound — 600 British Pound / Euro 3,400 1,900 U.S. Dollar / Swiss Franc 2,180 — British Pound / Swiss Franc 1,025 — Euro / Swiss Franc 2,750 — Euro / U.S. Dollar 11,000 — Sell/Buy - buy notional Euro / U.S. Dollar 20,900 7,500 British Pound / Euro 5,300 — These contracts have maturities of one month from the date originally entered into. Fair Value Measurements The following table summarizes the fair values of derivative instruments as of December 31 for the year indicated and the line items in the accompanying consolidated balance sheets where the instruments are recorded: December 31, December 31, In thousands 2021 2020 2021 2020 Balance sheet caption Prepaid Expenses Other Current Designated as hedging: Forward foreign currency exchange contracts $ 3,197 $ 577 $ 288 $ 4,342 Interest rate swap — — 44 136 Not designated as hedging: Forward foreign currency exchange contracts 701 456 116 118 The amounts set forth in the table above represent the net asset or liability giving effect to rights of offset with each counterparty. The following table summarizes the amount of income or loss from derivative instruments recognized in our results of operations for the periods indicated and the line items in the accompanying consolidated statements of income (loss) where the results are recorded: Year ended December 31, In thousands 2021 2020 2019 Designated as hedging: Forward foreign currency exchange contracts: Effective portion – cost of products sold $ 382 $ 5,503 $ 6,468 Interest expense 85 83 — Not designated as hedging: Forward foreign currency exchange contracts: Other – net 2,666 1,679 300 The impact of activity not designated as hedging was substantially all offset by the remeasurement of the underlying on-balance sheet item. The fair value hierarchy consists of three broad levels, which gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1) and the lowest priority to unobservable inputs (Level 3). The three levels of the fair value hierarchy are described in Note 2 – “ Accounting Policies .” The fair values of the foreign exchange forward contracts are considered to be Level 2. These contracts are valued using foreign currency forward and interest rate curves. The fair value of each contract is determined by comparing the contract rate to the forward rate and discounting to present value. Contracts in a gain position are recorded in the accompanying consolidated balance sheets under the caption “Prepaid expenses and other current assets” and the value of contracts in a loss position is recorded under the caption “Other current liabilities.” A rollforward of fair value amounts recorded as a component of accumulated other comprehensive income is as follows: In thousands 2021 2020 Balance at January 1, $ (3,460) $ 5,859 Deferred (losses) gains on cash flow hedges 6,646 (3,899) Reclassified to earnings (297) (5,420) Balance at December 31, $ 2,889 $ (3,460) We expect substantially all of the amounts recorded as a component of accumulated other comprehensive income will be realized in results of operations within the next twelve Credit risk related to derivative activity arises in the event a counterparty fails to meet its obligations to us. This exposure is generally limited to the amounts, if any, by which the counterparty’s obligations exceed our obligation to them. Our policy is to enter into contracts only with financial institutions which meet certain minimum credit ratings.

Shareholders' Equity

Shareholders' Equity	12 Months Ended
	Dec. 31, 2021
Equity [Abstract]
Shareholders' Equity	SHAREHOLDERS’ EQUITY The following table summarizes outstanding shares of common stock: Year ended December 31, In thousands 2021 2020 2019 Shares outstanding at beginning of year 44,368 44,248 43,959 Treasury shares issued for: Restricted stock awards 181 110 188 Employee stock options exercised — 10 101 Shares outstanding at end of year 44,549 44,368 44,248

Commitments, Contingencies and

Commitments, Contingencies and Legal Proceedings	12 Months Ended
	Dec. 31, 2021
Commitments and Contingencies Disclosure [Abstract]
Commitments, Contingencies and Legal Proceedings	COMMITMENTS, CONTINGENCIES AND LEGAL PROCEEDINGS Contractual Commitments The following table summarizes the minimum annual payments due on noncancellable operating leases and other similar contractual obligations having initial or remaining terms in excess of one year: In thousands Leases Other 2022 $ 6,479 $ — 2023 3,921 19,154 2024 3,028 — 2025 2,618 — 2026 2,541 — Thereafter 38,588 — Other contractual obligations primarily represent unconditional purchase obligations under energy supply contracts. At December 31, 2021, required minimum annual payments due under operating leases and other similar contractual obligations aggregated $57.2 million and $19.2 million, respectively. Fox River - Neenah, Wisconsin Background We have previously reported that we face liabilities associated with environmental claims arising out of the presence of polychlorinated biphenyls (“PCBs”) in sediments in the lower Fox River, on which our former Neenah facility was located, and in the Bay of Green Bay, Wisconsin (collectively, the “Site”). Since the early 1990s, the United States, the State of Wisconsin and two Indian tribes (collectively, the “Governments”) have pursued a cleanup of a 39-mile stretch of river from Little Lake Butte des Morts into Green Bay and natural resource damages (“NRDs”). The United States originally notified several entities that they were potentially responsible parties (“PRPs”); however, after giving effect to settlements reached with the Governments, the remaining PRPs exposed to continuing obligations to implement the remainder of the cleanup consist of us, Georgia-Pacific Consumer Products, L.P. (“Georgia-Pacific”) and NCR Corporation. The United States Environmental Protection Agency (“EPA”) has divided the Site into five “operable units,” including the most upstream portion of the Site on which our facility was located (“OU1”) and four downstream reaches of the river and bay (“OU2-5”). Over the past several years, we and certain other PRPs completed all remedial actions pursuant to applicable consent decrees or a Unilateral Administrative Order. In January 2019, we reached an agreement with the United States, the State of Wisconsin, and Georgia-Pacific to resolve all remaining claims among those parties. Under the Glatfelter consent decree, we are primarily responsible for long-term monitoring and maintenance in OU2-OU4a and for reimbursement of government oversight costs paid after October 2018. Finally, we remain responsible for our obligation to continue long-term monitoring and maintenance under our OU1 consent decree. Cost estimates Our remaining obligations under the OU1 consent decree consist of long-term monitoring and maintenance. Furthermore, we are primarily responsible for long-term monitoring and maintenance in OU2-OU4a over a period of at least 30 years. The monitoring activities consist of, among others, testing fish tissue, sampling water quality and sediment, and inspections of the engineered caps. In 2018, we entered into a fixed-price, 30-year agreement with a third party for the performance of all of our monitoring and maintenance obligations in OU1 through OU4a with limited exceptions, such as, for extraordinary amounts of cap maintenance or replacement. Our obligation under this agreement is included in our total reserve for the Site. We are obligated to make the regular payments under that fixed-price contract until the remaining amount due is less than the OU1 escrow account balance. We are permitted to pay for this contract using the remaining balance of the escrow account established by us and WTM I Company (“WTM I”) another PRP, under the OU1 consent decree during any period that the balance in the escrow account exceeds the amount due under our fixed- price contract. As of December 31, 2021, the escrow account balance, which is included in the consolidated balance sheet under the caption “Other assets” totaled $8.7 million which is less than amounts due under the fixed-price contract by approximately $1.7 million. Our obligation to pay this difference is secured by a letter of credit. Under the consent decree, we are responsible for reimbursement of government oversight costs paid from October 2018 and later over approximately the next 30 years. We anticipate that oversight costs will decline as activities at the site transition from remediation to long-term monitoring and maintenance. Reserves for the Site Our reserve for past and future government oversight costs and long-term monitoring and maintenance is set forth below: Year ended December 31, In thousands 2021 2020 Balance at January 1, $ 18,455 $ 21,870 Payments (2,458) (3,622) Accretion 203 207 Balance at December 31, $ 16,200 $ 18,455 The payments set forth above represent payments for government oversight costs for amounts due under the long-term monitoring and maintenance agreement. Of our total reserve for the Fox River, $2.2 million is recorded in the accompanying December 31, 2021, consolidated balance sheet under the caption “Environmental liabilities” and the remaining $14.0 million is recorded under the caption “Other long-term liabilities.” Range of Reasonably Possible Outcomes . Based on our analysis of all available information, including but not limited to decisions of the courts, official documents such as records of decision, discussions with legal counsel, cost estimates for future monitoring and maintenance and other post-remediation costs to be performed at the Site, we do not believe that our costs associated with the Fox River matter could exceed the aggregate amounts accrued by a material amount.

Segment and Geographic Informat

Segment and Geographic Information	12 Months Ended
	Dec. 31, 2021
Segment Reporting [Abstract]
Segment and Geographic Information	25. SEGMENT AND GEOGRAPHIC INFORMATION The following table sets forth net sales, profitability and other information by segment: Year ended December 31, In thousands, except per share 2021 2020 2019 Net Sales Composite Fibers $ 556,807 $ 525,089 $ 521,666 Airlaid Material 470,250 391,409 406,007 Spunlace 57,637 — — Total $ 1,084,694 $ 916,498 $ 927,673 Operating income (loss) Composite Fibers $ 37,422 $ 52,094 $ 47,883 Airlaid Material 42,244 46,304 41,118 Spunlace (1,338) — — Other and unallocated (49,714) (49,242) (34,366) Total $ 28,614 $ 49,156 $ 54,635 Depreciation and amortization Composite Fibers $ 27,690 $ 26,175 $ 26,153 Airlaid Material 28,101 22,416 21,136 Spunlace 1,693 — — Other and unallocated 3,937 8,009 3,531 Total $ 61,421 $ 56,600 $ 50,820 Capital expenditures Composite Fibers $ 11,912 $ 13,262 $ 11,972 Airlaid Material 8,431 9,311 13,667 Spunlace 3,810 — — Other and unallocated 5,884 5,563 2,126 Total $ 30,037 $ 28,136 $ 27,765 Tons shipped (metric) Composite Fibers 132,196 134,758 133,473 Airlaid Material 148,134 136,661 137,595 Spunlace 12,514 — — Total 292,844 271,419 271,068 Plant, equipment and timberlands, net Composite Fibers $ 202,445 $ 225,444 $ 222,710 Airlaid Material 371,324 295,806 293,779 Spunlace 161,478 — — Other and unallocated 23,565 22,017 20,932 Total $ 758,812 $ 543,267 $ 537,421 Results of individual operating segments are presented based on our management accounting practices and management structure. There is no comprehensive, authoritative body of guidance for management accounting equivalent to accounting principles generally accepted in the United States of America; therefore, the financial results of individual segments are not necessarily comparable with similar information for any other company. The management accounting process uses assumptions and allocations to measure performance of the operating segments. Methodologies are refined from time to time as management accounting practices are enhanced and businesses change. The costs incurred by support areas not directly aligned with the operating segments are allocated primarily based on an estimated utilization of support area services. Management evaluates results of operations of the operating segments before pension expense, certain corporate level costs, and the effects of certain gains or losses not considered to be related to the core business operations. Management believes that this is a more meaningful representation of the operating performance of its core businesses, the profitability of segments and the extent of cash flow generated from these core operations. Such amounts are presented under the caption “Other and Unallocated.” In the evaluation of operating segment results, management does not use any measures of total assets. This presentation is aligned with the management and operating structure of our company. It is also on this basis that the Company’s performance is evaluated internally and by the Company’s Board of Directors. Our Composite Fibers segment serves customers globally and focuses on higher value-added products in the following categories: • Food & Beverage; • Wallcovering; • Technical Specialties; • Composite Laminate; and • Metallized products. The Airlaid Materials segment is a leading global supplier of highly absorbent cellulose-based airlaid nonwoven materials used in the following categories: • Feminine hygiene and other hygiene applications; • Specialty wipes; • Tabletop; • Home care; • Adult incontinence; and • Other consumer and industrial products. The Spunlace segment is a global leading specialist manufacturer of premium quality spunlace nonwovens for critical cleaning, high-performance materials, personal care, hygiene and medical applications. The categories served by Spunlace include: • Critical cleaning; • Health care; • High performance; • Beauty care; • Wipes; and • Feminine hygiene. Disaggregated net sales by categories and geographic region for the segments is presented in Item 8 Financial Statements and Supplementary Data, Note 8 – “ Revenue .” In each of the past three years ended December 31, 2021, approximately 16% of our consolidated net sales were from sales to Procter & Gamble Company, a customer of the Airlaid Materials and Spunlace segments. Our net sales to external customers and location of net plant, equipment and timberlands are summarized below. Net sales are attributed to countries based upon origin of shipment. 2021 2020 2019 In thousands Net sales Plant, Equipment and Timberlands – Net Net sales Plant, Equipment and Timberlands – Net Net sales Plant, Equipment and Timberlands – Net United States $ 255,086 $ 326,668 $ 166,131 $ 103,570 $ 167,887 $ 105,763 Germany 513,043 251,375 489,655 286,591 504,012 274,146 United Kingdom 82,144 50,420 73,604 50,140 70,018 52,039 Canada 120,808 65,291 112,128 68,975 121,789 72,436 Other 113,613 65,057 74,980 33,991 63,967 33,037 Total $ 1,084,694 $ 758,812 $ 916,498 $ 543,267 $ 927,673 $ 537,421

Valuation and Qualifying Accoun

Valuation and Qualifying Accounts	12 Months Ended
	Dec. 31, 2021
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]
Valuation and Qualifying Accounts	GLATFELTER CORPORATION AND SUBSIDIARIES SUPPLEMENTAL FINANCIAL STATEMENT SCHEDULE For each of the three years ended December 31, 2021 Valuation and Qualifying Accounts Allowance for In thousands Doubtful Accounts Sales Discounts and Deductions 2021 2020 2019 2021 2020 2019 Balance, beginning of year $ 2,093 $ 1,682 $ 1,661 $ 791 $ 578 $ 832 Provision 469 488 720 1,649 1,516 1,440 Write-offs, recoveries and discounts allowed (10) (114) (678) (1,493) (1,291) (1,526) Other (1) 179 37 (21) (122) (12) (168) Balance, end of year $ 2,731 $ 2,093 $ 1,682 $ 825 $ 791 $ 578 The provision for doubtful accounts is included in selling, general and administrative expense and the provision for sales discounts and deductions is deducted from sales. The related allowances are deducted from accounts receivable. (1) Relates primarily to changes in currency exchange rates.

Accounting Policies (Policies)

Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2021
Accounting Policies [Abstract]
Principles of Consolidation	Principles of Consolidation The consolidated financial statements include the accounts of Glatfelter and its wholly-owned subsidiaries. All intercompany balances and transactions have been eliminated.
Accounting Estimates	Accounting Estimates The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingencies as of the balance sheet date and the reported amounts of net sales and expenses during the reporting period. Management believes the estimates and assumptions used in the preparation of these consolidated financial statements are reasonable, based upon currently available facts and known circumstances, but recognizes that actual results may differ from those estimates and assumptions.
Discontinued Operations	Discontinued Operations The results of operations for the Specialty Papers business have been classified as discontinued operations for all periods presented in the consolidated statements of income (loss).
Cash and Cash Equivalents	Cash and Cash Equivalents We classify all highly liquid instruments with an original maturity of three months or less at the time of purchase as cash equivalents.
Inventories	Inventories Our inventories are stated at the lower of cost or market. Raw materials, in-process and finished goods inventories are valued principally using the average-cost method.
Plant, Equipment and Timberlands	Plant, Equipment and Timberlands For financial reporting purposes, depreciation is computed using the straight-line method over the estimated useful lives of the respective assets. The range of estimated service lives used to calculate financial reporting depreciation for principal items of plant and equipment are as follows: Buildings 15 – 45 years Machinery and equipment 5 – 40 years Other 3 – 25 years
Maintenance and Repairs	Maintenance and Repairs Maintenance and repairs costs are charged to income and major renewals and betterments are capitalized. At the time property is retired or sold, the net carrying value is eliminated and any resultant gain or loss is included in income.
Valuation of Long-lived Assets, Intangible Assets and Goodwill	Valuation of Long-lived Assets, Intangible Assets and Goodwill We evaluate long-lived assets for impairment when a specific event indicates that the carrying value of an asset may not be recoverable. Recoverability is assessed based on estimates of future cash flows expected to result from the use and eventual disposition of the asset. If the sum of expected undiscounted cash flows is less than the carrying value of the asset, the asset’s fair value is estimated, and an impairment loss is recognized for the amount by which the carrying value exceeds the estimated fair value. Goodwill and indefinite-lived intangible assets are not amortized and, therefore, are reviewed for impairment annually, during the fourth quarter, or more frequently if impairment indicators are present. The fair value of our reporting units, which are also our operating segments, is determined using a market approach and a discounted cash flow model. The fair value of non-amortizing tradename intangible assets is determined using a discounted cash flow model and requires the use and analysis of significant assumptions including among others, estimated cash flows consistent with our long-term strategic plan, perpetuity growth rates, capital expenditures, and discount rates. In addition, the discounted cash flow model requires the use of significant judgement to assess the potential impact of macroeconomic conditions including higher energy prices in Europe, raw material inflation in all three segments, logistics costs, competition and similar factors. For goodwill, impairment losses, if any, are recognized for the amount by which the carrying value of the reporting unit exceeds its fair value. The carrying value of a reporting unit is defined using an enterprise premise which is generally determined by the difference between the unit’s assets and operating liabilities. With respect to non-amortizing tradenames, impairment losses, if any, are recognized for the amount by which the carrying value of the tradename exceeds its fair value. For additional information, refer to Note 6 – “ Asset Impairment . “
Income Taxes	Income Taxes Income taxes are determined using the asset and liability method of accounting for income taxes in accordance with FASB ASC 740 Income Taxes (“ASC 740”). Under ASC 740, tax expense includes U.S. and international income taxes plus the provision for U.S. taxes on undistributed earnings of international subsidiaries not deemed to be permanently invested. Tax credits and other incentives reduce tax expense in the year the credits are claimed. Certain items of income and expense are not reported in tax returns and financial statements in the same year. The tax effect of such temporary differences is reported in deferred income taxes. Deferred tax assets are recognized if it is more likely than not that the assets will be realized in future years. We establish a valuation allowance for deferred tax assets for which realization is not more likely than not. Significant judgment is required in determining our worldwide provision for income taxes and recording the related assets and liabilities. In the ordinary course of our business, there are many transactions and calculations where the ultimate tax determination is less than certain. We and our subsidiaries are examined by various Federal, State, and foreign tax authorities. We regularly assess the potential outcomes of these examinations and any future examinations for the current or prior years in determining the adequacy of our provision for income taxes. We continually assess the likelihood and amount of potential adjustments and record any necessary adjustments in the period in which the facts that give rise to a revision become known. Investment tax credits are accounted for by the flow-through method, which results in recognition of the benefit in the year in which the credit become available. We account for global intangible low-taxed income (“GILTI”) tax in the period in which it is incurred. The GILTI provisions require entities to include in its U.S. income tax return foreign subsidiary earnings in excess of an allowable return on the foreign subsidiaries’ tangible assets.
Treasury Stock	Treasury Stock Common stock purchased for treasury is recorded at cost. At the date of subsequent reissue, the treasury stock account is reduced by the cost of such stock on the weighted-average cost basis.
Foreign Currency Translation	Foreign Currency Translation Foreign currency translation gains and losses and the effect of exchange rate changes on transactions designated as hedges of net foreign investments are included as a component of other comprehensive income (loss). Transaction gains and losses are included in income in the period in which they occur.
Revenue Recognition	Revenue Recognition We recognize revenue, or net sales, in accordance with ASU No. 2014-09, Revenue from Contracts with Customers. Our revenue is earned primarily from the manufacture and sale of engineered materials (“product sales”). Revenue is earned pursuant to contracts, supply agreements and other arrangements with a wide variety of customers. Our performance obligation is to produce a specified product according to technical specifications and, in substantially all instances, to deliver the product. Revenue from product sales is earned at a point in time. We recognize revenue on product sales when we have satisfied our performance obligation and control of the product has passed to the customer thereby entitling us to payment. With respect to substantially all arrangements for product sales, this is deemed to occur when title transfers in accordance with specified shipping terms. Selling prices are fixed at the time the sales arrangement is entered into and payment terms are customary for similar arrangements in our industry. Many of our agreements include customary provisions for volume rebates, discounts and similar incentives. In addition, we are obligated for products that fail to meet agreed upon specification. Provisions for such items are estimated and recorded as sales deductions in the period in which the related revenue is recognized. Refer to Note 8 – “ Revenue ” for additional information about the disaggregation of our net sales.
Environmental Liabilities	Environmental Liabilities Accruals for losses associated with environmental obligations are recorded when it is probable that a liability has been incurred and the amount of the liability can be reasonably estimated based on existing legislation and remediation technologies. These accruals are adjusted periodically as assessment and remediation actions continue and/or further legal or technical information develops. Such undiscounted liabilities are exclusive of any insurance or other claims against third parties. Environmental costs are capitalized if the costs extend the life of the asset, increase its capacity and/or mitigate or prevent contamination from future operations. Recoveries of environmental remediation costs
Earnings Per Share	Earnings Per Share Basic earnings (loss) per share is computed by dividing net income (loss) by the weighted-average common shares outstanding during the respective periods. Diluted earnings per share is computed by dividing net income by the weighted-average common shares and common share equivalents outstanding during the period. In periods in which there is a net loss, diluted loss per share is equal to basic loss per share. The dilutive effect of common share equivalents is considered in the diluted earnings per share computation using the treasury stock method.
Financial Derivatives and Hedging Activities	Financial Derivatives and Hedging Activities We use financial derivatives to manage exposure to changes in foreign currencies and interest rates. In accordance with FASB ASC 815 Derivatives and Hedging (“ASC 815”), we record all derivatives on the balance sheet at fair value. The accounting for changes in the fair value of derivatives depends on the intended use of the derivative, whether we have elected to designate a derivative in a hedging relationship and apply hedge accounting, and whether the hedging relationship has satisfied the criteria necessary to apply hedge accounting. The gain or loss on those derivative instruments designated and qualifying as a hedge of the exposure to variability in expected future cash flows related to forecasted transactions is deferred and reported as a component of accumulated other comprehensive income (loss). Deferred gains or losses are reclassified to our results of operations at the time the hedged forecasted transaction is recorded in our results of operations. The effectiveness of cash flow hedges is assessed at inception and quarterly thereafter. If the instrument matures, is de-designated, becomes ineffective or it becomes probable that the originally forecasted transaction will not occur, the related change in fair value of the derivative instrument is also reclassified from accumulated other comprehensive income (loss) and recognized in earnings. For additional information, refer to Note 22 - " Financial Derivativ es and Hedging Activities. "
Fair Value of Financial Instruments	Fair Value of Financial Instruments Under the accounting for fair value measurements and disclosures, a fair value hierarchy was established that prioritizes the inputs to valuation techniques used to measure fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). A financial instrument's level within the fair value hierarchy is based on the lowest level of any input that is significant to the fair value measurement. The three levels of the fair value hierarchy are described below: Level 1 - Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities. Level 2 - Inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly or indirectly, including quoted prices for similar assets or liabilities in active markets; quoted prices for identical or similar assets or liabilities in markets that are not active; inputs other than quoted prices that are observable for the asset or liability (e.g., interest rates); and inputs that are derived principally from or corroborated by observable market data by correlation or other means. Level 3 - Inputs that are both significant to the fair value measurement and unobservable.
Recently Issued Accounting Pronouncements	Recently Issued Accounting Pronouncements In December 2020, the FASB issued ASU 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes . The update eliminates, clarifies, and modifies certain guidance related to the accounting for income taxes. ASU 2019-12 is effective for annual reporting periods beginning after December 15, 2020. We adopted this standard in the first quarter of 2021, but it did not have a material impact on our financial statements.

Accounting Policies (Tables)

Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2021
Accounting Policies [Abstract]
Summary of Plant, Equipment and Timberlands	The range of estimated service lives used to calculate financial reporting depreciation for principal items of plant and equipment are as follows: Buildings 15 – 45 years Machinery and equipment 5 – 40 years Other 3 – 25 years Plant, equipment and timberlands at December 31 were as follows: In thousands 2021 2020 Land and buildings $ 236,347 $ 173,646 Machinery and equipment 838,999 754,737 Furniture, fixtures, and other 219,111 160,922 Accumulated depreciation (591,803) (569,386) 702,654 519,919 Construction in progress 56,156 23,330 Timberlands, less depletion 2 18 Total $ 758,812 $ 543,267

Acquisitions (Tables)

Acquisitions (Tables)	12 Months Ended
	Dec. 31, 2021
Business Combination and Asset Acquisition [Abstract]
Schedule of Business Acquisitions, by Acquisition	The following table sets forth information related to the consideration exchanged for each acquisition. In thousands Mount Holly Jacob Holm Total Total consideration $ 170,919 $ 303,952 $ 474,871 Less: Debt repaid — (148,000) (148,000) Cash consideration $ 170,919 $ 155,952 $ 326,871 The following table sets forth information related to amounts of net sales, operating income (loss) of the acquired businesses included in our results of operations prospectively from the date of acquisition and amounts of legal and professional fees directly related to the transaction included in our results of operations for the year ended December 31, 2021: In thousands Mount Holly Jacob Holm Net sales $ 60,599 $ 57,637 Operating income (loss) 6,205 (1,338) Legal and professional fees included in SG&A 3,421 16,336
Summary of Preliminary Allocation of Purchase Price to Assets Acquired and Liabilities Assumed	The preliminary purchase price allocations set forth in the following table are based on all information available to us at the present time and is subject to change. With respect to the Mount Holly acquisition, the purchase price allocation is complete. However, the Jacob Holm purchase price allocation is preliminary as we are in the process of finalizing our analysis of certain matters, primarily related to the assessment potential tax liabilities associated with the acquired entities. In the event new information becomes available, the measurement of the amount of goodwill reflected may be affected. In thousands Mount Holly Jacob Holm Total Assets Cash and cash equivalents $ — $ 11,426 $ 11,426 Accounts receivable 11,599 30,271 41,870 Inventory 7,031 45,340 52,371 Prepaid and other current assets 11 6,727 6,738 Plant, equipment and timberlands 100,498 158,612 259,110 Intangible assets 20,000 70,240 90,240 Goodwill 35,793 48,855 84,648 Other assets 8,041 26,929 34,970 Total assets 182,973 398,400 581,373 Liabilities Short-term debt 14,081 14,081 Accounts payable 2,321 25,264 27,585 Other current liabilities 1,868 21,763 23,631 Other long-term liabilities 7,865 33,340 41,205 Total liabilities 12,054 94,448 106,502 Total preliminary purchase price $ 170,919 $ 303,952 $ 474,871
Summary of Annual Unaudited Pro Forma Financial Information	The following table summarizes annual unaudited pro forma financial information as if the acquisition occurred as of January 1, 2020: 2021 2020 In thousands, except per share (unaudited) Net sales $ 1,400,901 $ 1,421,578 Income (loss) from continuing operations 14,677 23,055

Discontinued Operations (Tables

Discontinued Operations (Tables)	12 Months Ended
	Dec. 31, 2021
Discontinued Operations and Disposal Groups [Abstract]
Summary of Discontinued Operations	The following table sets forth a summary of discontinued operations included in the consolidated statements of income (loss): Year ended December 31, In thousands 2021 2020 2019 Net sales $ — $ — $ — Energy and related sales, net — — — Total revenues — — — Costs of products sold — — — Gross profit — — — Selling, general and administrative expenses (216) (544) 109 (Gains) losses on dispositions of plant, equipment and timberlands, net — — — Operating income (loss) 216 544 (109) Non-operating income (expense) Interest expense — — — Other, net — — 1,393 Impairment charge — — — Income (loss) before income taxes 216 544 1,284 Income tax provision (benefit) — 29 (2,386) Income from discontinued operations $ 216 $ 515 $ 3,670 The following table sets forth a summary of cash flows from discontinued operations which is included in the consolidated statements of cash flows: Year ended December 31, In thousands 2021 2020 2019 Net cash used by operating activities $ (996) $ (1,613) $ (10,942) Net cash used by investing activities — — (8,221) Net cash provided by financing activities — — — Change in cash and cash equivalents from discontinued operations $ (996) $ (1,613) $ (19,163) Dollars in thousands Acres Proceeds Gain (loss) 2021 Timberlands 1,796 $ 5,567 $ 5,239 Other n/a — (170) Total $ 5,567 $ 5,069 2020 Timberlands 461 $ 1,413 $ 1,381 Other n/a — (49) Total $ 1,413 $ 1,332 2019 Timberlands 1,996 $ 1,705 $ 1,572 Other n/a 493 488 Total $ 2,198 $ 2,060

Restructuring (Tables)

Restructuring (Tables)	12 Months Ended
	Dec. 31, 2021
Restructuring and Related Activities [Abstract]
Summary of Restructuring Charges	In the first quarter of 2020, we announced restructuring actions within the Composite Fibers operating segment. The actions primarily consisted of the consolidation of our metallizing operation from Gernsbach, Germany to our Caerphilly, U.K. site. In thousands Year ended December 31, 2020 Severance and benefit continuation $ 6,143 Accelerated depreciation 3,900 Inventory and spare parts 977 Other 91 Total $ 11,111

Gain on Dispositions of Plant_2

Gain on Dispositions of Plant, Equipment and Timberlands (Tables)	12 Months Ended
	Dec. 31, 2021
Property, Plant and Equipment [Abstract]
Summary for Sale of Timberlands and Other Assets	The following table sets forth a summary of discontinued operations included in the consolidated statements of income (loss): Year ended December 31, In thousands 2021 2020 2019 Net sales $ — $ — $ — Energy and related sales, net — — — Total revenues — — — Costs of products sold — — — Gross profit — — — Selling, general and administrative expenses (216) (544) 109 (Gains) losses on dispositions of plant, equipment and timberlands, net — — — Operating income (loss) 216 544 (109) Non-operating income (expense) Interest expense — — — Other, net — — 1,393 Impairment charge — — — Income (loss) before income taxes 216 544 1,284 Income tax provision (benefit) — 29 (2,386) Income from discontinued operations $ 216 $ 515 $ 3,670 The following table sets forth a summary of cash flows from discontinued operations which is included in the consolidated statements of cash flows: Year ended December 31, In thousands 2021 2020 2019 Net cash used by operating activities $ (996) $ (1,613) $ (10,942) Net cash used by investing activities — — (8,221) Net cash provided by financing activities — — — Change in cash and cash equivalents from discontinued operations $ (996) $ (1,613) $ (19,163) Dollars in thousands Acres Proceeds Gain (loss) 2021 Timberlands 1,796 $ 5,567 $ 5,239 Other n/a — (170) Total $ 5,567 $ 5,069 2020 Timberlands 461 $ 1,413 $ 1,381 Other n/a — (49) Total $ 1,413 $ 1,332 2019 Timberlands 1,996 $ 1,705 $ 1,572 Other n/a 493 488 Total $ 2,198 $ 2,060

Revenue (Tables)

Revenue (Tables)	12 Months Ended
	Dec. 31, 2021
Disaggregation of Revenue [Abstract]
Summary of Disaggregated Information Pertaining to Net Sales from Contracts with Customers	The following table sets forth disaggregated information pertaining to our net sales from contracts with customers: Year ended December 31, In thousands 2021 2020 2019 Revenue by product category Composite Fibers Food & beverage $ 298,859 $ 285,665 $ 278,786 Wallcovering 88,057 79,346 81,679 Technical specialties 92,351 84,320 79,535 Composite laminates 43,438 36,856 35,274 Metallized 34,102 38,902 46,392 556,807 525,089 521,666 Airlaid Materials Feminine hygiene 207,116 204,085 207,301 Specialty wipes 110,201 74,942 70,149 Tabletop 76,904 45,314 66,486 Home care 25,575 25,040 17,266 Adult incontinence 22,034 21,825 25,233 Other 28,420 20,203 19,572 470,250 391,409 406,007 Spunlace Consumer wipes 23,937 — — Critical cleaning 16,871 — — Health care 10,785 — — Hygiene 3,428 — — High performance 1,483 — — Beauty care 1,133 — — 57,637 — — Total $ 1,084,694 $ 916,498 $ 927,673 Revenue by geography Composite Fibers Europe, Middle East and Africa $ 333,608 $ 315,881 $ 312,218 Americas 134,753 128,385 132,845 Asia Pacific 88,446 80,823 76,603 556,807 525,089 521,666 Airlaid Materials Europe, Middle East and Africa 223,718 204,728 220,924 Americas 237,808 174,606 179,067 Asia Pacific 8,724 12,075 6,016 470,250 391,409 406,007 Spunlace Europe, Middle East and Africa 19,990 — — Americas 30,815 — — Asia Pacific 6,832 — — 57,637 — — Total $ 1,084,694 $ 916,498 $ 927,673

Earnings Per Share (Tables)

Earnings Per Share (Tables)	12 Months Ended
	Dec. 31, 2021
Earnings Per Share [Abstract]
Details of Basic and Diluted Earnings (Loss) Per Share (EPS)	The following table sets forth the details of basic and diluted earnings (loss) per share (EPS): Year ended December 31, In thousands, except per share 2021 2020 2019 Net income (loss) $ 6,937 $ 21,298 $ (21,541) Weighted average common shares outstanding used in basic EPS 44,551 44,339 44,132 Common shares issuable upon exercise of dilutive stock options and PSAs / RSUs 373 275 — Weighted average common shares outstanding and common share equivalents used in diluted EPS 44,924 44,614 44,132 Earnings (loss) per share Continuing operations $ 0.15 $ 0.47 $ (0.57) Discontinued operations — 0.01 0.08
Number of Potential Anti-Dilutive Shares that have been Excluded from Computation of Diluted Earnings Per Share	The following table sets forth the potential common shares outstanding for stock options that were not included in the computation of diluted EPS for the period indicated, because their effect would be anti-dilutive: Year ended December 31, In thousands 2021 2020 2019 Potential common shares 1,079 1,082 1,233

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Income (Tables)	12 Months Ended
	Dec. 31, 2021
Equity [Abstract]
Schedule of Changes in Accumulated Other Comprehensive Income (Losses)	The following table sets forth details of the changes in accumulated other comprehensive income (losses) for the three years ended December 31, 2021, 2020 and 2019. In thousands Currency translation adjustments Unrealized gain (loss) on cash flow hedges Change in pensions Change in other postretirement defined benefit plans Total Balance at January 1, 2021 $ (42,525) $ (2,496) $ (12,844) $ (788) $ (58,653) Other comprehensive income (loss) before reclassifications (net of tax) (27,232) 4,759 611 (79) (21,941) Amounts reclassified from accumulated other comprehensive income (net of tax) — (275) 751 (186) 290 Net current period other comprehensive income (loss) (27,232) 4,484 1,362 (265) (21,651) Balance at December 31, 2021 $ (69,757) $ 1,988 $ (11,482) $ (1,053) $ (80,304) Balance at January 1, 2020 $ (76,346) $ 4,316 $ (7,253) $ 1,387 $ (77,896) Other comprehensive income (loss) before reclassifications (net of tax) 33,821 (2,840) (6,202) (878) 23,901 Amounts reclassified from accumulated other comprehensive income (net of tax) — (3,972) 611 (1,297) (4,658) Net current period other comprehensive income (loss) 33,821 (6,812) (5,591) (2,175) 19,243 Balance at December 31, 2020 $ (42,525) $ (2,496) $ (12,844) $ (788) $ (58,653) Balance at January 1, 2019 $ (69,622) $ 2,199 $ (71,431) $ 1,414 $ (137,440) Other comprehensive income (loss) before reclassifications (net of tax) (6,724) 6,800 8,730 826 9,632 Amounts reclassified from accumulated other comprehensive income (net of tax) — (4,683) 55,448 (853) 49,912 Net current period other comprehensive income (loss) (6,724) 2,117 64,178 (27) 59,544 Balance at December 31, 2019 $ (76,346) $ 4,316 $ (7,253) $ 1,387 $ (77,896)
Schedule of Amounts Reclassified from Accumulated Other Comprehensive Income (Losses)	The following table sets forth the amounts reclassified from accumulated other comprehensive income (losses) for the years indicated. Year ended December 31, In thousands 2021 2020 2019 Description Line Item in Statements of Income Cash flow hedges (Note 22) Gains on cash flow hedges $ (382) $ (5,503) $ (6,468) Costs of products sold Tax expense 22 1,448 1,785 Income tax provision (benefit) Net of tax (360) (4,055) (4,683) Loss on interest rate swaps 85 83 — Interest expense Tax expense — — — Income tax provision (benefit) Net of tax 85 83 — Total cash flow hedges (275) (3,972) (4,683) Retirement plan obligations (Note 13) Amortization of defined benefit pension plan items Prior service costs 47 48 216 Other, net Actuarial losses 792 651 2,842 Other, net Pension settlement — — 75,326 839 699 78,384 Tax benefit (88) (88) (22,936) Income tax provision (benefit) Net of tax 751 611 55,448 Amortization of defined benefit other plan items Prior service costs (233) (463) (10) Other, net Actuarial gains 47 (834) (852) Other, net (186) (1,297) (862) Tax expense — — 9 Income tax provision (benefit) Net of tax (186) (1,297) (853) Total reclassifications, net of tax $ 290 $ (4,658) $ 49,912

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Schedule of Provision for Benefit from Income Taxes from Continuing Operations	The provision for (benefit from) income taxes from continuing operations consisted of the following: Year ended December 31, In thousands 2021 2020 2019 Current taxes Federal $ (570) $ (4,989) $ (419) State 584 166 134 Foreign 20,561 18,470 14,014 20,575 13,647 13,729 Deferred taxes and other Federal (1,159) 540 (20,448) State 234 (1,183) (4,105) Foreign (12,694) (1,428) 1,582 (13,619) (2,071) (22,971) Income tax provision (benefit) $ 6,956 $ 11,576 $ (9,242)
Schedule of Domestic and Foreign Components of Pretax Income (Loss) from Operations	The following are the domestic and foreign components of pretax income (loss) from continuing operations: Year ended December 31, In thousands 2021 2020 2019 United States $ (44,682) $ (35,696) $ (107,455) Foreign 58,359 68,055 73,002 Total pretax income (loss) $ 13,677 $ 32,359 $ (34,453)
Schedule of Reconciliation of Federal Statutory Rate to Company's Effective Tax Rate	The following table sets forth a reconciliation of the statutory federal income tax rate to our actual effective tax rate for continuing operations. Year ended December 31, 2021 2020 2019 Federal income tax provision at statutory rate 21.0 % 21.0 % 21.0 % State income taxes, net of federal income tax benefit 2.7 0.6 3.7 Foreign income tax rate differential (3.3) 3.4 2.0 Tax effect of tax credits (0.1) (10.2) 8.2 Provision for (resolution of) tax matters 23.6 12.4 (8.0) Rate changes due to enacted legislation 15.3 0.7 0.1 Change in reinvestment assertion 26.4 — — Effect of U.S. tax law change 2.8 (21.5) — Global Intangible Low-Taxed Income 18.7 7.1 (9.4) Stock-based compensation 3.9 1.4 (1.0) Nondeductible officer's compensation 3.9 1.0 (0.7) Valuation allowance (3.1) 11.7 4.3 Recognition of non-U.S. intangible tax basis (78.1) — — Capitalized transaction costs 8.9 — — Pension termination, settlement and related — 5.4 5.0 Prior year adjustments 7.1 4.5 1.8 Other 1.2 (1.7) (0.2) Actual tax rate 50.9 % 35.8 % 26.8 %
Schedule of Deferred Tax Assets and Liabilities	The sources of deferred income taxes were as follows at December 31: In thousands 2021 2020 Reserves $ 1,060 $ 685 Environmental 3,970 4,481 Compensation 1,920 2,415 Pension 4,479 4,279 Post-retirement benefits 1,210 1,388 Research & development expenses 4,239 3,092 Tax carryforwards 45,729 16,703 Other 2,444 5,714 Deferred tax assets 65,051 38,757 Valuation allowance (24,526) (23,305) Net deferred tax assets 40,525 15,452 Property (93,164) (70,492) Intangible assets (14,063) (18,808) Inventories (37) — Other (5,201) (3,282) Deferred tax liabilities (112,465) (92,582) Net deferred tax liabilities $ (71,940) $ (77,130)
Schedule of Non-Current Deferred Tax Assets and Liabilities Balance Sheet Captions	Non-current deferred tax assets and liabilities are included in the following balance sheet captions: December 31, In thousands 2021 2020 Other assets $ 15,345 $ 1 Deferred income taxes 87,285 77,131
Schedule of Unrecognized Tax Benefit	A reconciliation of the beginning and ending balances of the total amounts of gross unrecognized tax benefits is as follows: In thousands 2021 2020 2019 Balance at January 1 $ 46,259 $ 30,458 $ 29,620 Increases in tax positions for prior years 38 13,866 2,803 Decreases in tax positions for prior years (638) (72) (2,892) Acquisition related: Purchase Accounting 12,718 — — Increases in tax positions for current year 3,683 4,400 4,552 Settlements — (1,101) (309) Lapse in statutes of limitation (6,400) (1,292) (3,316) Balance at December 31 $ 55,660 $ 46,259 $ 30,458
Summary of Tax Years that Remain Subject to Examination by Major Jurisdiction	The following table summarizes tax years that remain subject to examination by major jurisdiction: Open Tax Years Jurisdiction Examinations not yet initiated Examination in progress United States Federal 2014, 2015; 2018 - 2021 N/A State 2017 - 2021 N/A Canada (1) 2014 - 2018; 2021 2019 - 2020 Germany (1) 2020 - 2021 2016 - 2019 France 2019 - 2021 N/A United Kingdom 2020 - 2021 N/A Philippines 2020 - 2021 2018, 2019 (1) Includes provincial or similar local jurisdictions, as applicable.
Summary of Information Related to Interest and Penalties on Uncertain Tax Positions	The following table summarizes information related to interest and penalties on uncertain tax positions. $3.0 million of penalty accruals and $1.2 million of interest accruals were recorded in 2021 through purchase accounting: As of or for the year ended December 31, In thousands 2021 2020 2019 Accrued interest payable $ 3,947 $ 1,792 $ 424 Interest expense (income) 974 927 (649) Penalties 3,020 — —

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	12 Months Ended
	Dec. 31, 2021
Share-based Payment Arrangement [Abstract]
Summary of Share Based Compensation Activity	The following table summarizes RSU and PSA activity during the past three years: Units 2021 2020 2019 Balance at January 1, 1,071,652 896,463 756,786 Granted 374,931 400,854 600,820 Forfeited (103,499) (89,483) (223,677) Shares delivered (231,702) (136,182) (237,466) Balance at December 31, 1,111,382 1,071,652 896,463 2021 2020 2019 SOSARs Shares Wtd Avg Exercise Price Shares Wtd Avg Exercise Price Shares Wtd Avg Exercise Price Outstanding at January 1, 1,082,413 $ 20.40 1,291,947 $ 20.05 2,334,742 $ 18.08 Granted — — — — — — Exercised (3,300) 15.61 (58,460) 12.85 (596,360) 15.56 Canceled / forfeited — — (151,074) 20.25 (446,435) 21.06 Outstanding at December 31, 1,079,113 $ 20.42 1,082,413 $ 20.40 1,291,947 $ 20.05 Exercisable at December 31, 1,079,113 20.42 1,082,413 20.40 1,291,947 20.05 Vested and expected to vest 1,079,113 1,082,413 1,291,947 Compensation expense (in thousands) $ — $ — $ 40
Compensation Expense for Stock Option Activity	In thousands 2021 2020 2019 Compensation expense $ 5,063 $ 5,655 $ 3,543

Retirement Plans and Other Po_2

Retirement Plans and Other Post-Retirement Benefits (Tables)	12 Months Ended
	Dec. 31, 2021
Retirement Benefits [Abstract]
Schedule of Change in Benefit Obligation and Plan Assets	All information presented in the following tables represents amounts attributable to continuing operations. Pension Benefits Other Benefits In thousands 2021 2020 2021 2020 Change in Benefit Obligation Balance at beginning of year $ 47,333 $ 45,714 $ 5,967 $ 6,511 Service cost — — 29 — Interest cost 974 1,210 127 184 Benefits paid (2,247) (2,420) (1,078) (1,611) Participant contributions — — — — Plan amendments — — 6 — Actuarial (gain)/loss (203) 1,749 79 883 Effect of currency rate changes (972) 1,080 — — Balance at end of year $ 44,885 $ 47,333 $ 5,130 $ 5,967 Change in Plan Assets Fair value of plan assets at beginning of year $ — $ 53,401 $ — $ — Reversion of excess plan assets — (53,401) — — Total contributions 2,247 2,420 1,078 1,611 Benefits paid (2,247) (2,420) (1,078) (1,611) Fair value of plan assets at end of year — — — — Funded status at end of year $ (44,885) $ (47,333) $ (5,130) $ (5,967)
Summary of Amounts Recognized in Consolidated Balance Sheets	Amounts recognized in the consolidated balance sheets consist of the following as of December 31: Pension Benefits Other Benefits In thousands 2021 2020 2021 2020 Current liabilities $ (2,096) $ (2,271) $ (852) $ (1,167) Other long-term liabilities (42,789) (45,062) (4,278) (4,800) Net amount recognized $ (44,885) $ (47,333) $ (5,130) $ (5,967)
Components of Amounts Recognized as Accumulated Other Comprehensive Income on Pre-Tax Basis	The components of amounts recognized as “Accumulated other comprehensive income” consist of the following on a pre-tax basis: Pension Benefits Other Benefits In thousands 2021 2020 2021 2020 Prior service credit (cost) $ (172) $ (226) $ (125) $ 108 Net actuarial gain (loss) (14,189) (15,612) (382) (350)
Weighted-Average Assumptions Used in Computing Benefit Obligations	The weighted-average assumptions used in computing the benefit obligations above were as follows: Pension Benefits Other Benefits 2021 2020 2021 2020 Discount rate – benefit obligation 2.42 % 2.17 % 2.70 % 2.30 %
Information for Pension Plans with Accumulated Benefit Obligation in Excess of Plan Assets	Information for pension plans with an accumulated benefit obligation in excess of plan assets was as follows: In thousands 2021 2020 Projected benefit obligation $ 44,885 $ 47,333 Accumulated benefit obligation 44,885 47,333 Fair value of plan assets — —
Schedule of Net Periodic Benefit (Income) Expense of Pension and Other Benefits	Net periodic benefit (income) expense includes the following components: Year Ended December 31, In thousands 2021 2020 2019 Pension Benefits Service cost $ — $ — $ 1,269 Interest cost 974 1,210 11,495 Expected return on plan assets — — (13,724) Amortization of prior service cost 48 48 246 Amortization of actuarial loss 790 655 2,759 Termination benefits — — 1,259 One-time settlement charge — — 75,356 Total net periodic benefit expense $ 1,812 $ 1,913 $ 78,660 Other Benefits Service cost $ 29 $ — $ — Interest cost 127 184 313 Amortization of prior service credit (233) (458) — Amortization of actuarial loss (gain) 47 (834) (892) Total net periodic benefit income $ (30) $ (1,108) $ (579)
Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income (Loss)	Other changes in plan assets and benefit obligations recognized in other comprehensive income (loss) were as follows: Year Ended December 31, In thousands 2021 2020 Pension Benefits Actuarial (gain) loss $ (203) $ 1,750 Recognized prior service costs (48) (48) Recognized actuarial losses (790) (655) Total recognized in other comprehensive (income) loss (1,041) 1,047 Total recognized in net periodic benefit cost and other comprehensive loss $ 771 $ 2,960 Other Benefits Actuarial loss $ 79 $ 883 Amortization of actuarial gain (loss) (47) 834 Total recognized in other comprehensive loss 32 1,717 Total recognized in net periodic benefit cost and other comprehensive loss $ 2 $ 609
Schedule of Defined Benefit Plan Weighted-Average Assumptions Used in Computing Net Periodic Benefit Expense	The weighted-average assumptions used in computing the net periodic benefit expense information above were as follows: Year Ended December 31, 2021 2020 2019 Pension Benefits Discount rate – benefit expense 2.17 % 2.70 % 4.34 % Future compensation growth rate — — 2.50 % Expected long-term rate of return on plan assets — — 4.50 % Other Benefits Discount rate – benefit expense 2.30 % 3.11 % 4.19 %
Schedule of Health Care Cost Trend Rates Used in Calculating Benefit Obligations	Assumed health care cost trend rates used to determine benefit obligations at December 31 were as follows: 2021 2020 Health care cost trend rate assumed for next year 5.30 % 5.30 % Rate to which the cost trend rate is assumed to decline (the ultimate trend rate) 4.50 % 4.50 % Year that the rate reaches the ultimate rate 2037 2037
Summary of Benefit Payments Expected to be Made under Non-Qualified Pension Plans and Other Benefit Plans	Cash Flow Benefit payments expected to be made under our non-qualified pension plans and other benefit plans are summarized below: In thousands Pension Benefits Other Benefits 2022 $ 2,096 $ 852 2023 2,057 582 2024 2,013 468 2025 1,968 436 2026 1,909 427 2027 through 2031 17,208 1,471

Inventories (Tables)

Inventories (Tables)	12 Months Ended
	Dec. 31, 2021
Inventory Disclosure [Abstract]
Inventories, Net of Reserves	Inventories, net of reserves were as follows: December 31, In thousands 2021 2020 Raw materials $ 87,448 $ 55,466 In-process and finished 139,058 97,109 Supplies 53,014 43,655 Total $ 279,520 $ 196,230

Plant, Equipment and Timberla_2

Plant, Equipment and Timberlands (Tables)	12 Months Ended
	Dec. 31, 2021
Property, Plant and Equipment [Abstract]
Summary of Plant, Equipment and Timberlands	The range of estimated service lives used to calculate financial reporting depreciation for principal items of plant and equipment are as follows: Buildings 15 – 45 years Machinery and equipment 5 – 40 years Other 3 – 25 years Plant, equipment and timberlands at December 31 were as follows: In thousands 2021 2020 Land and buildings $ 236,347 $ 173,646 Machinery and equipment 838,999 754,737 Furniture, fixtures, and other 219,111 160,922 Accumulated depreciation (591,803) (569,386) 702,654 519,919 Construction in progress 56,156 23,330 Timberlands, less depletion 2 18 Total $ 758,812 $ 543,267

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	The following table sets forth information with respect to goodwill and other intangible assets: In thousands December 31, Acquisitions Amortization Translation December 31, Goodwill Composite Fibers $ 84,586 $ — $ — $ (6,148) $ 78,438 Airlaid Materials 79,783 35,793 — (6,090) 109,486 Spunlace — 48,855 (614) 48,241 Total $ 164,369 $ 84,648 $ — $ (12,852) $ 236,165 Other Intangible Assets Composite Fibers Tradename - non-amortizing $ 3,902 $ — $ — $ (301) $ 3,601 Technology and related 41,578 — — (2,964) 38,614 Accumulated amortization (18,636) — (1,845) 1,257 (19,224) Net 22,942 — (1,845) (1,707) 19,390 Customer relationships and related 37,535 — — (2,796) 34,739 Accumulated amortization (21,290) — (2,478) 1,664 (22,104) Net 16,245 — (2,478) (1,132) 12,635 Airlaid Materials Tradename 3,960 — — 525 4,485 Accumulated amortization (456) — (190) 43 (603) Net 3,504 — (190) 568 3,882 Technology and related 20,053 — — (2,228) 17,825 Accumulated amortization (3,591) — (1,268) 307 (4,552) Net 16,462 — (1,268) (1,921) 13,273 Customer relationships and related 26,636 20,000 — (2,051) 44,585 Accumulated amortization (7,856) — (3,249) 593 (10,512) Net 18,780 20,000 (3,249) (1,458) 34,073 Spunlace Products and Tradenames — 27,649 — (26) 27,623 Accumulated amortization — — (253) — (253) Net — 27,649 (253) (26) 27,370 Technology and related — 14,561 — (14) 14,547 Accumulated amortization — — (202) — (202) Net — 14,561 (202) (14) 14,345 Customer relationships and related — 28,030 — (27) 28,003 Accumulated amortization — — (268) — (268) Net — 28,030 (268) (27) 27,735 Total intangibles 133,664 90,240 — (9,882) 214,022 Total accumulated amortization (51,829) — (9,753) 3,864 (57,718) Net intangibles $ 81,835 $ 90,240 $ (9,753) $ (6,018) $ 156,304
Summary of Amortization of Intangible Assets	The following table sets forth information pertaining to amortization of intangible assets: In thousands 2021 2020 2019 Aggregate amortization expense: $ 9,753 $ 8,014 $ 7,986 Estimated amortization expense: 2022 13,966 2023 13,966 2024 13,966 2025 13,966 2026 13,966

Other Long-Term Assets (Tables)

Other Long-Term Assets (Tables)	12 Months Ended
	Dec. 31, 2021
Other Assets, Noncurrent [Abstract]
Summary of Other Long-Term Assets	Other long-term assets consist of the following: December 31, In thousands 2021 2020 Right-of-use asset operating leases $ 27,186 $ 11,789 Deferred taxes 15,345 2 Restricted cash 8,378 10,084 Other 41,851 22,610 Total $ 92,760 $ 44,485

Other Current Liabilities (Tabl

Other Current Liabilities (Tables)	12 Months Ended
	Dec. 31, 2021
Other Liabilities Disclosure [Abstract]
Summary of Other Current Liabilities	Other current liabilities consist of the following: December 31, In thousands 2021 2020 Accrued payroll and benefits $ 25,572 $ 21,726 Other accrued compensation and retirement benefits 5,633 9,376 Income taxes payable 11,746 4,781 Accrued rebates 6,327 4,002 Other accrued expenses 50,160 31,208 Total $ 99,438 $ 71,093

Leases (Tables)

Leases (Tables)	12 Months Ended
	Dec. 31, 2021
Leases [Abstract]
Summary of Information Related to Leases	The following table sets forth information related to our leases as of the periods indicated. December 31, Dollars in thousands 2021 2020 Right of use asset $ 27,186 $ 11,789 Weighted average discount rate 3.31 % 2.94 % Weighted average remaining maturity ( years ) 26.0 5.5 The following table sets forth operating lease expense for the periods indicated: December 31, In thousands 2021 2020 Operating lease expense $ 5,742 $ 5,876
Summary of Minimum Lease Payments	The following table sets forth required minimum lease payments for the years indicated: In thousands 2022 $ 6,479 2023 3,921 2024 3,028 2025 2,618 2026 2,541 Thereafter 38,588

Long-Term Debt (Tables)

Long-Term Debt (Tables)	12 Months Ended
	Dec. 31, 2021
Debt Disclosure [Abstract]
Summary of Long-Term Debt	Long-term debt is summarized as follows: December 31, In thousands 2021 2020 Revolving credit facility, due Sep. 2026 $ 10,000 $ 36,813 4.750% Senior Notes, due Oct. 2029 500,000 — Term loan, due Feb 2024 218,026 249,715 2.40% Term Loan, due Jun 2022 809 2,629 2.05% Term Loan, due Mar 2023 7,556 14,737 1.30% Term Loan, due Jun 2023 2,427 4,382 1.55% Term Loan, due Sep 2025 5,204 7,143 1.10% Term Loan, due Mar 2024 9,267 — 0.57% Term Loan, due Jul 2023 22,652 — Total long-term debt 775,941 315,419 Less current portion (26,437) (25,057) Unamortized deferred issuance costs (11,429) (1,898) Long-term debt, net of current portion $ 738,075 $ 288,464
Amortization of Term Loan Agreements Together with Maturities of Other Long-term Debt	The following schedule sets forth the amortization of our term loan agreements together with the maturity of our other long-term debt during the indicated year. In thousands 2022 $ 26,438 2023 42,938 2024 195,525 2025 1,040 2026 10,000 Thereafter 500,000

Fair Value of Financial Instr_2

Fair Value of Financial Instruments (Tables)	12 Months Ended
	Dec. 31, 2021
Fair Value Disclosures [Abstract]
Carrying Value and Fair Value of Long-Term Debt	The following table sets forth the carrying value and fair value of long-term debt as of December 31: 2021 2020 In thousands Carrying Fair Carrying Fair Variable rate debt $ 10,000 $ 10,000 $ 36,813 $ 36,813 4.750% Senior Notes, due Oct. 2029 500,000 516,875 — — Term loan, due Feb. 2024 218,026 218,026 249,715 249,715 2.40% Term Loan 809 813 2,629 2,651 2.05% Term Loan 7,556 7,616 14,737 14,873 1.30% Term Loan 2,427 2,433 4,382 4,384 1.55% Term Loan 5,204 5,234 7,143 7,210 1.10% Term Loan 9,267 9,252 — — 0.57% DZ Bank 22,652 22,657 — — Total $ 775,941 $ 792,906 $ 315,419 $ 315,646

Financial Derivatives and Hed_2

Financial Derivatives and Hedging Activities (Tables)	12 Months Ended
	Dec. 31, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Outstanding Derivatives Used to Hedge Foreign Exchange Risks	We had the following outstanding derivatives that were used to hedge foreign exchange risks associated with forecasted transactions and designated as hedging instruments: December 31, In thousands 2021 2020 Derivative Sell/Buy - sell notional Euro / British Pound 18,823 18,638 Philippine Peso / Euro — 18,522 U.S. Dollar / British Pound 16,205 — U.S. Dollar / Euro 658 1,041 Canadian Dollar / U.S. Dollar — 70 Sell/Buy - buy notional Euro / Philippine Peso 896,291 853,686 British Pound / Philippine Peso 1,121,183 1,081,791 Euro / U.S. Dollar 108,467 69,324 U.S. Dollar / Canadian Dollar 36,904 34,847 December 31, In thousands 2021 2020 Derivative Sell/Buy - sell notional U.S. Dollar / British Pound 26,600 25,250 Euro / British Pound — 600 British Pound / Euro 3,400 1,900 U.S. Dollar / Swiss Franc 2,180 — British Pound / Swiss Franc 1,025 — Euro / Swiss Franc 2,750 — Euro / U.S. Dollar 11,000 — Sell/Buy - buy notional Euro / U.S. Dollar 20,900 7,500 British Pound / Euro 5,300 —
Fair Values of Derivative Instruments	Fair Value Measurements The following table summarizes the fair values of derivative instruments as of December 31 for the year indicated and the line items in the accompanying consolidated balance sheets where the instruments are recorded: December 31, December 31, In thousands 2021 2020 2021 2020 Balance sheet caption Prepaid Expenses Other Current Designated as hedging: Forward foreign currency exchange contracts $ 3,197 $ 577 $ 288 $ 4,342 Interest rate swap — — 44 136 Not designated as hedging: Forward foreign currency exchange contracts 701 456 116 118
Income or Loss from Derivative Instruments Recognized in Results of Operations	The following table summarizes the amount of income or loss from derivative instruments recognized in our results of operations for the periods indicated and the line items in the accompanying consolidated statements of income (loss) where the results are recorded: Year ended December 31, In thousands 2021 2020 2019 Designated as hedging: Forward foreign currency exchange contracts: Effective portion – cost of products sold $ 382 $ 5,503 $ 6,468 Interest expense 85 83 — Not designated as hedging: Forward foreign currency exchange contracts: Other – net 2,666 1,679 300
Fair Value Amounts Recorded as Component of Accumulated Other Comprehensive Income	A rollforward of fair value amounts recorded as a component of accumulated other comprehensive income is as follows: In thousands 2021 2020 Balance at January 1, $ (3,460) $ 5,859 Deferred (losses) gains on cash flow hedges 6,646 (3,899) Reclassified to earnings (297) (5,420) Balance at December 31, $ 2,889 $ (3,460)

Shareholders' Equity (Tables)

Shareholders' Equity (Tables)	12 Months Ended
	Dec. 31, 2021
Equity [Abstract]
Summary of Outstanding Shares of Common Stock	The following table summarizes outstanding shares of common stock: Year ended December 31, In thousands 2021 2020 2019 Shares outstanding at beginning of year 44,368 44,248 43,959 Treasury shares issued for: Restricted stock awards 181 110 188 Employee stock options exercised — 10 101 Shares outstanding at end of year 44,549 44,368 44,248

Commitments, Contingencies an_2

Commitments, Contingencies and Legal Proceedings (Tables)	12 Months Ended
	Dec. 31, 2021
Commitments and Contingencies Disclosure [Abstract]
Summary of Minimum Annual Payment Due on Noncancelable Operating Lease	The following table summarizes the minimum annual payments due on noncancellable operating leases and other similar contractual obligations having initial or remaining terms in excess of one year: In thousands Leases Other 2022 $ 6,479 $ — 2023 3,921 19,154 2024 3,028 — 2025 2,618 — 2026 2,541 — Thereafter 38,588 —
Schedule of Reserves	Reserves for the Site Our reserve for past and future government oversight costs and long-term monitoring and maintenance is set forth below: Year ended December 31, In thousands 2021 2020 Balance at January 1, $ 18,455 $ 21,870 Payments (2,458) (3,622) Accretion 203 207 Balance at December 31, $ 16,200 $ 18,455

Segment and Geographic Inform_2

Segment and Geographic Information (Tables)	12 Months Ended
	Dec. 31, 2021
Segment Reporting [Abstract]
Schedule of Financial and Other Information by Segment	The following table sets forth net sales, profitability and other information by segment: Year ended December 31, In thousands, except per share 2021 2020 2019 Net Sales Composite Fibers $ 556,807 $ 525,089 $ 521,666 Airlaid Material 470,250 391,409 406,007 Spunlace 57,637 — — Total $ 1,084,694 $ 916,498 $ 927,673 Operating income (loss) Composite Fibers $ 37,422 $ 52,094 $ 47,883 Airlaid Material 42,244 46,304 41,118 Spunlace (1,338) — — Other and unallocated (49,714) (49,242) (34,366) Total $ 28,614 $ 49,156 $ 54,635 Depreciation and amortization Composite Fibers $ 27,690 $ 26,175 $ 26,153 Airlaid Material 28,101 22,416 21,136 Spunlace 1,693 — — Other and unallocated 3,937 8,009 3,531 Total $ 61,421 $ 56,600 $ 50,820 Capital expenditures Composite Fibers $ 11,912 $ 13,262 $ 11,972 Airlaid Material 8,431 9,311 13,667 Spunlace 3,810 — — Other and unallocated 5,884 5,563 2,126 Total $ 30,037 $ 28,136 $ 27,765 Tons shipped (metric) Composite Fibers 132,196 134,758 133,473 Airlaid Material 148,134 136,661 137,595 Spunlace 12,514 — — Total 292,844 271,419 271,068 Plant, equipment and timberlands, net Composite Fibers $ 202,445 $ 225,444 $ 222,710 Airlaid Material 371,324 295,806 293,779 Spunlace 161,478 — — Other and unallocated 23,565 22,017 20,932 Total $ 758,812 $ 543,267 $ 537,421
Schedule of Net Sales to External Customers and Location of Net Plant, Equipment and Timberlands	Our net sales to external customers and location of net plant, equipment and timberlands are summarized below. Net sales are attributed to countries based upon origin of shipment. 2021 2020 2019 In thousands Net sales Plant, Equipment and Timberlands – Net Net sales Plant, Equipment and Timberlands – Net Net sales Plant, Equipment and Timberlands – Net United States $ 255,086 $ 326,668 $ 166,131 $ 103,570 $ 167,887 $ 105,763 Germany 513,043 251,375 489,655 286,591 504,012 274,146 United Kingdom 82,144 50,420 73,604 50,140 70,018 52,039 Canada 120,808 65,291 112,128 68,975 121,789 72,436 Other 113,613 65,057 74,980 33,991 63,967 33,037 Total $ 1,084,694 $ 758,812 $ 916,498 $ 543,267 $ 927,673 $ 537,421

Organization (Details)

Organization (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2021USD ($)employee	Dec. 31, 2020USD ($)
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Net sales | $	$ 1,400,901	$ 1,421,578
Number of employees at manufacturing facility | employee	3,300

Accounting Policies - Schedule

Accounting Policies - Schedule of Range of Estimated Service Lives (Detail)	12 Months Ended
	Dec. 31, 2021
Buildings | Minimum
Property, Plant and Equipment [Line Items]
Range of estimated service lives	15 years
Buildings | Maximum
Property, Plant and Equipment [Line Items]
Range of estimated service lives	45 years
Machinery and equipment | Minimum
Property, Plant and Equipment [Line Items]
Range of estimated service lives	5 years
Machinery and equipment | Maximum
Property, Plant and Equipment [Line Items]
Range of estimated service lives	40 years
Other | Minimum
Property, Plant and Equipment [Line Items]
Range of estimated service lives	3 years
Other | Maximum
Property, Plant and Equipment [Line Items]
Range of estimated service lives	25 years

Acquisitions - Additional Infor

Acquisitions - Additional Information (Details) t in Thousands	May 13, 2021USD ($)employeet	Dec. 31, 2021USD ($)employee	Dec. 31, 2020USD ($)	Oct. 29, 2021USD ($)employee	Oct. 25, 2021USD ($)
Business Acquisition [Line Items]
Number of employees at manufacturing facility | employee		3,300
Carrying Value		$ 775,941,000	$ 315,419,000
Four Point Seven Five Zero Percent Term Loan | Senior Notes
Business Acquisition [Line Items]
Carrying Value					$ 500,000,000
Mount Holly
Business Acquisition [Line Items]
Business acquisition purchase price	$ 170,900,000	170,919,000
Annual production capacity | t	37
Number of employees at manufacturing facility | employee	140
Annual sales of acquiree			100,000,000
Acquired intangible assets estimated remaining life	11 years
Mount Holly | Minimum
Business Acquisition [Line Items]
Range of estimated service lives	5 years
Mount Holly | Maximum
Business Acquisition [Line Items]
Range of estimated service lives	35 years
Jacob Holm
Business Acquisition [Line Items]
Business acquisition purchase price		$ 303,952,000
Number of employees at manufacturing facility | employee				760
Annual sales of acquiree			$ 400,000,000
Indemnification asset				$ 17,300,000
Jacob Holm | Customer Relationships
Business Acquisition [Line Items]
Acquired intangible assets estimated remaining life		20 years
Jacob Holm | Minimum | Tradename
Business Acquisition [Line Items]
Acquired intangible assets estimated remaining life		15 years
Jacob Holm | Minimum | Technical know-how
Business Acquisition [Line Items]
Acquired intangible assets estimated remaining life		8 years
Jacob Holm | Maximum | Tradename
Business Acquisition [Line Items]
Acquired intangible assets estimated remaining life		20 years
Jacob Holm | Maximum | Technical know-how
Business Acquisition [Line Items]
Acquired intangible assets estimated remaining life		20 years

Acquisition - Summary of Inform

Acquisition - Summary of Information Related to Consideration (Details) - USD ($) $ in Thousands	May 13, 2021	Dec. 31, 2021
Total 2021 Acquisitions
Business Acquisition [Line Items]
Total consideration		$ 474,871
Less: Debt repaid		(148,000)
Cash consideration		326,871
Mount Holly
Business Acquisition [Line Items]
Total consideration	$ 170,900	170,919
Less: Debt repaid		0
Cash consideration		170,919
Jacob Holm
Business Acquisition [Line Items]
Total consideration		303,952
Less: Debt repaid		(148,000)
Cash consideration		$ 155,952

Acquisition - Summary of Alloca

Acquisition - Summary of Allocation of Purchase Price to Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Assets
Goodwill	$ 236,165	$ 164,369
Total Acquisitions
Assets
Cash and cash equivalents	11,426
Accounts receivable	41,870
Inventory	52,371
Prepaid and other current assets	6,738
Plant, equipment and timberlands	259,110
Intangible assets	90,240
Goodwill	84,648
Other assets	34,970
Total assets	581,373
Liabilities
Short-term debt	14,081
Accounts payable	27,585
Other current liabilities	23,631
Other long-term liabilities	41,205
Total liabilities	106,502
Total preliminary purchase price	474,871
Mount Holly
Assets
Cash and cash equivalents	0
Accounts receivable	11,599
Inventory	7,031
Prepaid and other current assets	11
Plant, equipment and timberlands	100,498
Intangible assets	20,000
Goodwill	35,793
Other assets	8,041
Total assets	182,973
Liabilities
Short-term debt
Accounts payable	2,321
Other current liabilities	1,868
Other long-term liabilities	7,865
Total liabilities	12,054
Total preliminary purchase price	170,919
Jacob Holm
Assets
Cash and cash equivalents	11,426
Accounts receivable	30,271
Inventory	45,340
Prepaid and other current assets	6,727
Plant, equipment and timberlands	158,612
Intangible assets	70,240
Goodwill	48,855
Other assets	26,929
Total assets	398,400
Liabilities
Short-term debt	14,081
Accounts payable	25,264
Other current liabilities	21,763
Other long-term liabilities	33,340
Total liabilities	94,448
Total preliminary purchase price	$ 303,952

Acquisitions - Summary of Annua

Acquisitions - Summary of Annual Unaudited Pro Forma Financial Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Business Acquisition [Line Items]
Net sales	$ 1,400,901	$ 1,421,578
Income (loss) from continuing operations	14,677	$ 23,055
Mount Holly
Business Acquisition [Line Items]
Net sales	60,599
Operating income (loss)	6,205
Legal and professional fees included in SG&A	3,421
Jacob Holm
Business Acquisition [Line Items]
Net sales	57,637
Operating income (loss)	(1,338)
Legal and professional fees included in SG&A	$ 16,336

Discontinued Operations - Addit

Discontinued Operations - Additional Information (Detail) $ in Millions	Dec. 31, 2018USD ($)
Specialty Papers | Discontinued Operations, Disposed of by Sale
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Selling price of business	$ 360

Discontinued Operations - Summa

Discontinued Operations - Summary of Discontinued Operations included in Consolidated Statements of Income (Loss) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Non-operating income (expense)
Income (loss) before income taxes	$ 216	$ 544	$ 1,284
Income tax provision (benefit)	0	29	(2,386)
Income from discontinued operations	216	515	3,670
Specialty Papers
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Total revenues	0	0	0
Costs of products sold	0	0	0
Gross profit	0	0	0
Selling, general and administrative expenses	(216)	(544)	109
(Gains) losses on dispositions of plant, equipment and timberlands, net	0	0	0
Operating income (loss)	216	544	(109)
Non-operating income (expense)
Interest expense	0	0	0
Other, net	0	0	1,393
Impairment charge	0	0	0
Income (loss) before income taxes	216	544	1,284
Income tax provision (benefit)	0	29	(2,386)
Income from discontinued operations	216	515	3,670
Specialty Papers | Net sales
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Total revenues	0	0	0
Specialty Papers | Energy and related sales, net
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Total revenues	$ 0	$ 0	$ 0

Discontinued Operations - Sum_2

Discontinued Operations - Summary of Cash Flows from Discontinued Operations Included in Consolidated Statements of Cash Flows (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Change in cash and cash equivalents from discontinued operations	$ (996)	$ (1,613)	$ (19,163)
Specialty Papers
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Net cash used by operating activities	(996)	(1,613)	(10,942)
Net cash used by investing activities	0	0	(8,221)
Net cash provided by financing activities	0	0	0
Change in cash and cash equivalents from discontinued operations	$ (996)	$ (1,613)	$ (19,163)

Restructuring - Summary of Rest

Restructuring - Summary of Restructuring Charges (Details) - Composite Fibers $ in Thousands	12 Months Ended
	Dec. 31, 2020USD ($)
Restructuring Cost And Reserve [Line Items]
Severance and benefit continuation	$ 6,143
Accelerated depreciation	3,900
Inventory and spare parts	977
Other	91
Total	$ 11,111

Restructuring - Additional Info

Restructuring - Additional Information (Details) $ in Millions	12 Months Ended
	Dec. 31, 2021USD ($)
Restructuring and Related Activities [Abstract]
Unpaid restructuring charge	$ 0.3

Asset Impairment (Details)

Asset Impairment (Details) $ in Millions	3 Months Ended
	Jun. 30, 2020USD ($)
Asset Impairment Charges [Abstract]
Impairment of indefinite-lived intangible assets	$ 0.9

Gain on Dispositions of Plant_3

Gain on Dispositions of Plant, Equipment and Timberlands (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2021USD ($)a	Dec. 31, 2020USD ($)a	Dec. 31, 2019USD ($)a
Property, Plant and Equipment [Line Items]
Proceeds	$ 5,567	$ 1,413	$ 2,198
Gain (loss)	$ 5,069	$ 1,332	$ 2,060
Timberlands
Property, Plant and Equipment [Line Items]
Acres | a	1,796	461	1,996
Proceeds	$ 5,567	$ 1,413	$ 1,705
Gain (loss)	5,239	1,381	1,572
Other
Property, Plant and Equipment [Line Items]
Proceeds	0	0	493
Gain (loss)	$ (170)	$ (49)	$ 488

Revenue (Detail)

Revenue (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disaggregation Of Revenue [Line Items]
Net sales		$ 1,084,694	$ 916,498	$ 927,673
Net sales
Disaggregation Of Revenue [Line Items]
Net sales		1,084,694	916,498	927,673
Composite Fibers
Disaggregation Of Revenue [Line Items]
Net sales		556,807	525,089	521,666
Composite Fibers | Europe, Middle East and Africa
Disaggregation Of Revenue [Line Items]
Net sales		333,608	315,881	312,218
Composite Fibers | Americas
Disaggregation Of Revenue [Line Items]
Net sales		134,753	128,385	132,845
Composite Fibers | Asia Pacific
Disaggregation Of Revenue [Line Items]
Net sales		88,446	80,823	76,603
Composite Fibers | Net sales
Disaggregation Of Revenue [Line Items]
Net sales		556,807	525,089	521,666
Composite Fibers | Food & beverage
Disaggregation Of Revenue [Line Items]
Net sales		298,859	285,665	278,786
Composite Fibers | Wallcovering
Disaggregation Of Revenue [Line Items]
Net sales		88,057	79,346	81,679
Composite Fibers | Technical specialties
Disaggregation Of Revenue [Line Items]
Net sales		92,351	84,320	79,535
Composite Fibers | Composite laminates
Disaggregation Of Revenue [Line Items]
Net sales		43,438	36,856	35,274
Composite Fibers | Metallized
Disaggregation Of Revenue [Line Items]
Net sales		34,102	38,902	46,392
Airlaid Materials
Disaggregation Of Revenue [Line Items]
Net sales		470,250	391,409	406,007
Airlaid Materials | Europe, Middle East and Africa
Disaggregation Of Revenue [Line Items]
Net sales		223,718	204,728	220,924
Airlaid Materials | Americas
Disaggregation Of Revenue [Line Items]
Net sales		237,808	174,606	179,067
Airlaid Materials | Asia Pacific
Disaggregation Of Revenue [Line Items]
Net sales		8,724	12,075	6,016
Airlaid Materials | Net sales
Disaggregation Of Revenue [Line Items]
Net sales		470,250	391,409	406,007
Airlaid Materials | Feminine hygiene
Disaggregation Of Revenue [Line Items]
Net sales		207,116	204,085	207,301
Airlaid Materials | Specialty wipes
Disaggregation Of Revenue [Line Items]
Net sales		110,201	74,942	70,149
Airlaid Materials | Tabletop
Disaggregation Of Revenue [Line Items]
Net sales		76,904	45,314	66,486
Airlaid Materials | Home care
Disaggregation Of Revenue [Line Items]
Net sales		25,575	25,040	17,266
Airlaid Materials | Adult incontinence
Disaggregation Of Revenue [Line Items]
Net sales		22,034	21,825	25,233
Airlaid Materials | Other
Disaggregation Of Revenue [Line Items]
Net sales		28,420	20,203	19,572
Spunlace
Disaggregation Of Revenue [Line Items]
Net sales		57,637	0	0
Spunlace | Europe, Middle East and Africa
Disaggregation Of Revenue [Line Items]
Net sales		19,990	0	0
Spunlace | Americas
Disaggregation Of Revenue [Line Items]
Net sales		30,815	0	0
Spunlace | Asia Pacific
Disaggregation Of Revenue [Line Items]
Net sales		6,832	0	0
Spunlace | Net sales
Disaggregation Of Revenue [Line Items]
Net sales		57,637	0	0
Spunlace | Critical cleaning
Disaggregation Of Revenue [Line Items]
Net sales		16,871	0	0
Spunlace | Health care
Disaggregation Of Revenue [Line Items]
Net sales		10,785	0	0
Spunlace | High performance
Disaggregation Of Revenue [Line Items]
Net sales		1,483	0	0
Spunlace | Beauty care
Disaggregation Of Revenue [Line Items]
Net sales		1,133	0	0
Spunlace | Consumer wipes
Disaggregation Of Revenue [Line Items]
Net sales		23,937	0	0
Spunlace | Hygiene
Disaggregation Of Revenue [Line Items]
Net sales		$ 3,428	$ 0	$ 0

Earnings Per Share - Details of

Earnings Per Share - Details of Basic and Diluted Earnings (Loss) Per Share (EPS) (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Earnings Per Share [Abstract]
Net income (loss)	$ 6,937	$ 21,298	$ (21,541)
Weighted average common shares outstanding used in basic EPS (in shares)	44,551	44,339	44,132
Common shares issuable upon exercise of dilutive stock options and PSAs / RSUs (in shares)	373	275	0
Weighted average common shares outstanding and common share equivalents used in diluted EPS (in shares)	44,924	44,614	44,132
Earnings (loss) per share
Continuing operations, basic (in dollars per share)	$ 0.15	$ 0.47	$ (0.57)
Continuing operations, diluted (in dollars per share)	0.15	0.47	(0.57)
Discontinued operations, basic (in dollars per share)	0	0.01	0.08
Discontinued operations, diluted (in dollars per share)	$ 0	$ 0.01	$ 0.08

Earnings Per Share - Number of

Earnings Per Share - Number of Potential Anti-Dilutive Shares Excluded from Computation (Detail) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Earnings Per Share [Abstract]
Potential common shares (in shares)	1,079	1,082	1,233

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Income - Schedule of Changes in Accumulated Other Comprehensive Income (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	$ 577,932	$ 555,959	$ 538,898
Other comprehensive income (loss) before reclassifications (net of tax)	(21,941)	23,901	9,632
Amounts reclassified from accumulated other comprehensive income (net of tax)	290	(4,658)	49,912
Other comprehensive income (loss)	(21,651)	19,243	59,544
Ending Balance	542,762	577,932	555,959
Currency translation adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	(42,525)	(76,346)	(69,622)
Other comprehensive income (loss) before reclassifications (net of tax)	(27,232)	33,821	(6,724)
Amounts reclassified from accumulated other comprehensive income (net of tax)	0	0	0
Other comprehensive income (loss)	(27,232)	33,821	(6,724)
Ending Balance	(69,757)	(42,525)	(76,346)
Unrealized gain (loss) on cash flow hedges
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	(2,496)	4,316	2,199
Other comprehensive income (loss) before reclassifications (net of tax)	4,759	(2,840)	6,800
Amounts reclassified from accumulated other comprehensive income (net of tax)	(275)	(3,972)	(4,683)
Other comprehensive income (loss)	4,484	(6,812)	2,117
Ending Balance	1,988	(2,496)	4,316
Change in Pensions | Pension Benefits
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	(12,844)	(7,253)	(71,431)
Other comprehensive income (loss) before reclassifications (net of tax)	611	(6,202)	8,730
Amounts reclassified from accumulated other comprehensive income (net of tax)	751	611	55,448
Other comprehensive income (loss)	1,362	(5,591)	64,178
Ending Balance	(11,482)	(12,844)	(7,253)
Change in Pensions | Other Benefits
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	(788)	1,387	1,414
Other comprehensive income (loss) before reclassifications (net of tax)	(79)	(878)	826
Amounts reclassified from accumulated other comprehensive income (net of tax)	(186)	(1,297)	(853)
Other comprehensive income (loss)	(265)	(2,175)	(27)
Ending Balance	(1,053)	(788)	1,387
Accumulated Other Comprehensive Loss
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	(58,653)	(77,896)	(137,440)
Ending Balance	$ (80,304)	$ (58,653)	$ (77,896)

Accumulated Other Comprehensi_4

Accumulated Other Comprehensive Income - Schedule of Amounts Reclassified from Accumulated Other Comprehensive Income (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plan Disclosure [Line Items]
Gains on cash flow hedges		$ 939,899	$ 768,629	$ 780,131
Loss on interest rate swaps		12,353	7,022	10,408
Other, net		2,657	4,020	4,477
Pension settlement charge		0	6,154	75,326
Income (loss) before income taxes		(13,677)	(32,359)	34,453
Tax expense		6,956	11,576	(9,242)
Net income (loss)		(6,937)	(21,298)	21,541
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Pension settlement charge	$ 0		0	75,356
Reclassifications Out of Accumulated Other Comprehensive Income
Defined Benefit Plan Disclosure [Line Items]
Net income (loss)		290	(4,658)	49,912
Reclassifications Out of Accumulated Other Comprehensive Income | Gains on cash flow hedges
Defined Benefit Plan Disclosure [Line Items]
Net income (loss)		(275)	(3,972)	(4,683)
Reclassifications Out of Accumulated Other Comprehensive Income | Pension Benefits | Change in Pensions
Defined Benefit Plan Disclosure [Line Items]
Income (loss) before income taxes		839	699	78,384
Tax expense		(88)	(88)	(22,936)
Net income (loss)		751	611	55,448
Reclassifications Out of Accumulated Other Comprehensive Income | Pension Benefits | Prior service costs
Defined Benefit Plan Disclosure [Line Items]
Other, net		47	48	216
Reclassifications Out of Accumulated Other Comprehensive Income | Pension Benefits | Actuarial losses
Defined Benefit Plan Disclosure [Line Items]
Other, net		792	651	2,842
Reclassifications Out of Accumulated Other Comprehensive Income | Pension Benefits | Pension settlement
Defined Benefit Plan Disclosure [Line Items]
Pension settlement charge		0	0	75,326
Reclassifications Out of Accumulated Other Comprehensive Income | Other Pension Plan | Change in Pensions
Defined Benefit Plan Disclosure [Line Items]
Income (loss) before income taxes		(186)	(1,297)	(862)
Tax expense		0	0	9
Net income (loss)		(186)	(1,297)	(853)
Reclassifications Out of Accumulated Other Comprehensive Income | Other Pension Plan | Prior service costs
Defined Benefit Plan Disclosure [Line Items]
Other, net		(233)	(463)	(10)
Reclassifications Out of Accumulated Other Comprehensive Income | Other Pension Plan | Actuarial losses
Defined Benefit Plan Disclosure [Line Items]
Other, net		47	(834)	(852)
Reclassifications Out of Accumulated Other Comprehensive Income | Interest Rate Swap | Gains on cash flow hedges
Defined Benefit Plan Disclosure [Line Items]
Loss on interest rate swaps		85	83	0
Tax expense		0	0	0
Net income (loss)		85	83	0
Reclassifications Out of Accumulated Other Comprehensive Income | Cash Flow Hedges | Gains on cash flow hedges
Defined Benefit Plan Disclosure [Line Items]
Gains on cash flow hedges		(382)	(5,503)	(6,468)
Tax expense		22	1,448	1,785
Net income (loss)		$ (360)	$ (4,055)	$ (4,683)

Income Taxes - Schedule of Prov

Income Taxes - Schedule of Provision for Benefit from Income Taxes from Continuing Operations (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Current taxes
Federal	$ (570)	$ (4,989)	$ (419)
State	584	166	134
Foreign	20,561	18,470	14,014
Total current taxes	20,575	13,647	13,729
Deferred taxes and other
Federal	(1,159)	540	(20,448)
State	234	(1,183)	(4,105)
Foreign	(12,694)	(1,428)	1,582
Total deferred taxes and other	(13,619)	(2,071)	(22,971)
Income tax provision (benefit)	$ 6,956	$ 11,576	$ (9,242)

Income Taxes - Schedule of Dome

Income Taxes - Schedule of Domestic and Foreign Components of Pretax Income (Loss) from Continuing Operations (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
United States	$ (44,682)	$ (35,696)	$ (107,455)
Foreign	58,359	68,055	73,002
Income (loss) before income taxes	$ 13,677	$ 32,359	$ (34,453)

Income Taxes - Schedule of Reco

Income Taxes - Schedule of Reconciliation of Federal Statutory Rate to Company's Effective Tax Rate (Detail)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Federal income tax provision at statutory rate	21.00%	21.00%	21.00%
State income taxes, net of federal income tax benefit	2.70%	0.60%	3.70%
Foreign income tax rate differential	(3.30%)	3.40%	2.00%
Tax effect of tax credits	(0.10%)	(10.20%)	8.20%
Provision for (resolution of) tax matters	23.60%	12.40%	(8.00%)
Rate changes due to enacted legislation	15.30%	0.70%	0.10%
Change in reinvestment assertion	26.40%	0.00%	0.00%
Effect of U.S. tax law change	2.80%	(21.50%)	0.00%
Global Intangible Low-Taxed Income	18.70%	7.10%	(9.40%)
Stock-based compensation	3.90%	1.40%	(1.00%)
Nondeductible officer's compensation	3.90%	1.00%	(0.70%)
Valuation allowance	(3.10%)	11.70%	4.30%
Recognition of non-U.S. intangible tax basis	(78.10%)	0.00%	0.00%
Capitalized transaction costs	8.90%	0.00%	0.00%
Pension termination, settlement and related	0.00%	5.40%	5.00%
Prior year adjustments	7.10%	4.50%	1.80%
Other	1.20%	(1.70%)	(0.20%)
Actual tax rate	50.90%	35.80%	26.80%

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Contingency [Line Items]
Pension, restructuring and other non recurring costs	$ 25,600,000
Income tax provision (benefit)	6,956,000	$ 11,576,000	$ (9,242,000)
Deferred tax liability, unremitted earnings of subsidiary	3,600,000
Deferred tax liabilities, intangible assets of foreign subsidiaries	10,700,000
Operating loss carryforwards subject to expiration	6,200,000
Operating loss carryforwards not subject to expiration	92,500,000
Valuation allowance	24,526,000	23,305,000
Research and development, tax credit	0	3,300,000	2,800,000
Unremitted earnings of subsidiaries outside the United States, reinvested	107,000,000	109,000,000
Gross unrecognized tax benefits	55,660,000	46,259,000	30,458,000	$ 29,620,000
Unrecognized tax benefits that would impact effective tax rate	51,100,000
Tax charge on earnings of subsidiary	3,600,000
Penalties	3,020,000	0	0
Interest expense (income)	974,000	$ 927,000	$ (649,000)
Total 2021 Acquisitions
Income Tax Contingency [Line Items]
Penalties	3,000,000
Interest expense (income)	1,200,000
Minimum
Income Tax Contingency [Line Items]
Gross unrecognized tax benefits balance may decrease within the next twelve months	0
Maximum
Income Tax Contingency [Line Items]
Gross unrecognized tax benefits balance may decrease within the next twelve months	1,700,000
Federal
Income Tax Contingency [Line Items]
Net operating loss carryforwards	98,700,000
Tax credit carryforwards	14,200,000
State and Local Jurisdiction
Income Tax Contingency [Line Items]
Net operating loss carryforwards	198,800,000
Tax credit carryforwards	3,400,000
Foreign Tax Authority
Income Tax Contingency [Line Items]
Net operating loss carryforwards	40,200,000
Pension, Restructuring, and Other Non-Recurring Costs
Income Tax Contingency [Line Items]
Income tax provision (benefit)	$ 0

Income Taxes - Schedule of Defe

Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Reserves	$ 1,060	$ 685
Environmental	3,970	4,481
Compensation	1,920	2,415
Pension	4,479	4,279
Post-retirement benefits	1,210	1,388
Research & development expenses	4,239	3,092
Tax carryforwards	45,729	16,703
Other	2,444	5,714
Deferred tax assets	65,051	38,757
Valuation allowance	(24,526)	(23,305)
Net deferred tax assets	40,525	15,452
Property	(93,164)	(70,492)
Intangible assets	(14,063)	(18,808)
Inventories	(37)	0
Other	(5,201)	(3,282)
Deferred tax liabilities	(112,465)	(92,582)
Net deferred tax liabilities	$ (71,940)	$ (77,130)

Income Taxes - Schedule of Non-

Income Taxes - Schedule of Non-Current Deferred Tax Assets and Liabilities Balance Sheet Captions (Detail) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Other assets	$ 15,345	$ 1
Deferred income taxes	$ 87,285	$ 77,131

Income Taxes - Schedule of Unre

Income Taxes - Schedule of Unrecognized Tax Benefit (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Beginning balance	$ 46,259	$ 30,458	$ 29,620
Increases in tax positions for prior years	38	13,866	2,803
Decreases in tax positions for prior years	(638)	(72)	(2,892)
Purchase Accounting	12,718	0	0
Increases in tax positions for current year	3,683	4,400	4,552
Settlements	0	(1,101)	(309)
Lapse in statutes of limitation	(6,400)	(1,292)	(3,316)
Ending balance	$ 55,660	$ 46,259	$ 30,458

Income Taxes - Summary of Infor

Income Taxes - Summary of Information Related to Interest and Penalties on Uncertain Tax Positions (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Accrued interest payable	$ 3,947	$ 1,792	$ 424
Interest expense (income)	974	927	(649)
Penalties	$ 3,020	$ 0	$ 0

Stock-Based Compensation - Addi

Stock-Based Compensation - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Restricted Stock Units (RSU)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cumulative performance targets	3 years
Additional service period	5 years
Performance Share Awards (PSAs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cumulative performance targets	2 years
Additional service period	1 year
Grants under performance share awards (in shares)	162,480	171,150	218,422
Weighted average grant date fair value (in dollars per share)	$ 16.71	$ 16.65	$ 15.86
Restricted Stock Units (RSU) and Performance Share Awards (PSAs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants under performance share awards (in shares)	374,931,000	400,854,000	600,820,000
Unrecognized compensation expense for outstanding RSUs and PSAs	$ 3.6
The weighted average remaining period over which the expense will be recognized	1 year 4 months 24 days
Stock Only Stock Appreciation Rights (SOSARs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period of stock	3 years
Share-based payment award, shares issued in period (in shares)	0	0	0
Intrinsic value of SOSARs vested and expected to vest	$ 0.2
The remaining weighted average contractual life of outstanding SOSARs	2 years 6 months
Long Term Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock available for future issuance (in shares)	1,628,094

Stock-Based Compensation - Summ

Stock-Based Compensation - Summary of RSU and PSA Activity (Detail) - Restricted Stock Units (RSU) and Performance Share Awards (PSAs) - shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Shares
Beginning Balance (in shares)	1,071,652,000	896,463,000	756,786,000
Granted (in shares)	374,931,000	400,854,000	600,820,000
Forfeited (in shares)	(103,499,000)	(89,483,000)	(223,677,000)
Shares delivered (in shares)	(231,702,000)	(136,182,000)	(237,466,000)
Ending Balance (in shares)	1,111,382,000	1,071,652,000	896,463,000

Stock-Based Compensation - Comp

Stock-Based Compensation - Compensation Expense for Periods (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Restricted Stock Units (RSU) and Performance Share Awards (PSAs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense	$ 5,063	$ 5,655	$ 3,543

Stock-Based Compensation - Sche

Stock-Based Compensation - Schedule of Information Related to Outstanding SOSARS (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Shares
Exercised (in shares)	0	(10,000)	(101,000)
Stock Only Stock Appreciation Rights (SOSARs)
Shares
Beginning Balance, Outstanding (in shares)	1,082,413,000	1,291,947,000	2,334,742,000
Granted (in shares)	0	0	0
Exercised (in shares)	(3,300,000)	(58,460,000)	(596,360,000)
Canceled / forfeited (in shares)	0	(151,074,000)	(446,435,000)
Ending Balance, Outstanding (in shares)	1,079,113,000	1,082,413,000	1,291,947,000
Ending balance, exercisable (in shares)	1,079,113,000	1,082,413,000	1,291,947,000
Vested and expected to vest (in shares)	1,079,113,000	1,082,413,000	1,291,947,000
Compensation expense	$ 0	$ 0	$ 40
Wtd Avg Exercise Price
Beginning balance (in dollars per share)	$ 20.40	$ 20.05	$ 18.08
Granted (in dollars per share)	0	0	0
Exercised (in dollars per share)	15.61	12.85	15.56
Canceled / forfeited (in dollars per share)	0	20.25	21.06
Ending balance (in dollars per share)	20.42	20.40	20.05
Exercisable (in dollars per share)	$ 20.42	$ 20.40	$ 20.05

Retirement Plans and Other Po_3

Retirement Plans and Other Post-Retirement Benefits - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plan Disclosure [Line Items]
Employer contribution of employee's eligible earnings, percentage	7.00%
Projected benefit obligation	$ 44,885	$ 47,333
Defined contribution plans Employees contribution	50.00%
Expense associated with Defined Contribution Plans	$ 2,400	$ 2,000	$ 1,900
Employer discretionary contribution of employee's eligible earnings, percentage	10.00%	11.00%
Non-qualified Plans | Unfunded
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	$ 44,900
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Decrease in projected benefit obligation			309,500
Decrease in plan assets			309,500
Pension plan settlement charge		$ 2,300	$ 75,300
Assets remain in pension trust	(44,885)	$ (47,333)
Amount transferred to suspense account to fund future 401(k) contributions	14,100
Paying of excise taxes	8,300
Available for general corporate purposes	$ 33,300
Discount rates	2.42%	2.17%
Pension Benefits | Maximum
Defined Benefit Plan Disclosure [Line Items]
Discount rates	2.88%
Pension Benefits | Minimum
Defined Benefit Plan Disclosure [Line Items]
Discount rates	1.10%
Pension Benefits | Cash and Cash Equivalents
Defined Benefit Plan Disclosure [Line Items]
Assets remain in pension trust		$ 53,400
Deferred Compensation Plan | Maximum
Defined Benefit Plan Disclosure [Line Items]
Employer contribution of employee's eligible earnings, percentage	7.00%
Other Benefits
Defined Benefit Plan Disclosure [Line Items]
Assets remain in pension trust	$ (5,130)	$ (5,967)
Discount rates	2.70%	2.30%

Retirement Plans and Other Po_4

Retirement Plans and Other Post-Retirement Benefits - Schedule of Change in Benefit Obligation and Plan Assets (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Pension Benefits
Change in Benefit Obligation
Balance at beginning of year		$ 47,333	$ 45,714
Service cost	$ 0	0	0	$ 1,269
Interest cost	974	974	1,210	11,495
Benefits paid		(2,247)	(2,420)
Participant contributions		0	0
Plan amendments		0	0
Actuarial (gain)/loss		(203)	1,749
Effect of currency rate changes		(972)	1,080
Balance at end of year	44,885	44,885	47,333	45,714
Change in Plan Assets
Fair value of plan assets at beginning of year		0	53,401
Reversion of excess plan assets			0	(53,401)
Total contributions		2,247	2,420
Benefits paid		(2,247)	(2,420)
Fair value of plan assets at end of year	0	0	0	53,401
Funded status at end of year	(44,885)	(44,885)	(47,333)
Other Benefits
Change in Benefit Obligation
Balance at beginning of year		5,967	6,511
Service cost	29	29	0	0
Interest cost	127	127	184	313
Benefits paid		(1,078)	(1,611)
Participant contributions		0	0
Plan amendments		6	0
Actuarial (gain)/loss		79	883
Effect of currency rate changes		0	0
Balance at end of year	5,130	5,130	5,967	6,511
Change in Plan Assets
Fair value of plan assets at beginning of year		0	0
Reversion of excess plan assets			0	0
Total contributions		1,078	1,611
Benefits paid		(1,078)	(1,611)
Fair value of plan assets at end of year	0	0	0	$ 0
Funded status at end of year	$ (5,130)	$ (5,130)	$ (5,967)

Retirement Plans and Other Po_5

Retirement Plans and Other Post-Retirement Benefits - Summary of Amounts Recognized in Consolidated Balance Sheets (Detail) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Current liabilities	$ (2,096)	$ (2,271)
Other long-term liabilities	(42,789)	(45,062)
Net amount recognized	(44,885)	(47,333)
Other Benefits
Defined Benefit Plan Disclosure [Line Items]
Current liabilities	(852)	(1,167)
Other long-term liabilities	(4,278)	(4,800)
Net amount recognized	$ (5,130)	$ (5,967)

Retirement Plans and Other Po_6

Retirement Plans and Other Post-Retirement Benefits - Components of Amounts Recognized as Accumulated Other Comprehensive Income (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Prior service credit (cost)	$ (172)	$ (226)
Net actuarial gain (loss)	(14,189)	(15,612)
Other Benefits
Defined Benefit Plan Disclosure [Line Items]
Prior service credit (cost)	(125)	108
Net actuarial gain (loss)	$ (382)	$ (350)

Retirement Plans and Other Po_7

Retirement Plans and Other Post-Retirement Benefits - Weighted-Average Assumptions, Benefit Obligations (Detail)	Dec. 31, 2021	Dec. 31, 2020
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Discount rate – benefit obligation	2.42%	2.17%
Other Benefits
Defined Benefit Plan Disclosure [Line Items]
Discount rate – benefit obligation	2.70%	2.30%

Retirement Plans and Other Po_8

Retirement Plans and Other Post-Retirement Benefits - Pension Plans with Accumulated Benefit Obligation in Excess of Plan Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Retirement Benefits [Abstract]
Projected benefit obligation	$ 44,885	$ 47,333
Accumulated benefit obligation	44,885	47,333
Fair value of plan assets	$ 0	$ 0

Retirement Plans and Other Po_9

Retirement Plans and Other Post-Retirement Benefits - Schedule of Net Periodic Benefit (Income) Expense (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plan Disclosure [Line Items]
Pension settlement charge		$ 0	$ 6,154	$ 75,326
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 0	0	0	1,269
Interest cost	974	974	1,210	11,495
Expected return on plan assets	0		0	13,724
Amortization of prior service cost/(credit)	48		48	246
Amortization of actuarial loss	790	790	655	2,759
Termination benefits	0		0	1,259
Pension settlement charge	0		0	75,356
Total net periodic benefit expense	1,812		1,913	78,660
Other Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	29	29	0	0
Interest cost	127	127	184	313
Amortization of prior service cost/(credit)	(233)		(458)	0
Amortization of actuarial loss	47	$ 47	(834)	(892)
Total net periodic benefit expense	$ (30)		$ (1,108)	$ (579)

Retirement Plans and Other P_10

Retirement Plans and Other Post-Retirement Benefits - Other Changes in Plan Assets and Benefit Obligations (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Actuarial (gain) loss		$ (203)	$ 1,750
Recognized prior service costs		(48)	(48)
Amortization of actuarial (gain) loss	$ (790)	(790)	(655)	$ (2,759)
Total recognized in other comprehensive (income) loss		(1,041)	1,047
Total recognized in net periodic benefit cost and other comprehensive loss		771	2,960
Other Benefits
Defined Benefit Plan Disclosure [Line Items]
Actuarial (gain) loss		79	883
Amortization of actuarial (gain) loss	$ (47)	(47)	834	$ 892
Total recognized in other comprehensive (income) loss		32	1,717
Total recognized in net periodic benefit cost and other comprehensive loss		$ 2	$ 609

Retirement Plans and Other P_11

Retirement Plans and Other Post-Retirement Benefits - Weighted-Average Assumptions, Periodic Benefit Expense (Detail)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Discount rate – benefit expense	2.17%	2.70%	4.34%
Future compensation growth rate	0.00%	0.00%	2.50%
Expected long-term rate of return on plan assets	0.00%	0.00%	4.50%
Other Benefits
Defined Benefit Plan Disclosure [Line Items]
Discount rate – benefit expense	2.30%	3.11%	4.19%

Retirement Plans and Other P_12

Retirement Plans and Other Post-Retirement Benefits - Schedule of Health Care Cost Trend Rates (Detail)	Dec. 31, 2021	Dec. 31, 2020
Retirement Benefits [Abstract]
Health care cost trend rate assumed for next year	5.30%	5.30%
Rate to which the cost trend rate is assumed to decline (the ultimate trend rate)	4.50%	4.50%

Retirement Plans and Other P_13

Retirement Plans and Other Post-Retirement Benefits - Summary of Benefit Payments Expected to be Made (Detail) $ in Thousands	Dec. 31, 2021USD ($)
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
2022	$ 2,096
2023	2,057
2024	2,013
2025	1,968
2026	1,909
2027 through 2031	17,208
Other Benefits
Defined Benefit Plan Disclosure [Line Items]
2022	852
2023	582
2024	468
2025	436
2026	427
2027 through 2031	$ 1,471

Inventories (Detail)

Inventories (Detail) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Inventory Disclosure [Abstract]
Raw materials	$ 87,448	$ 55,466
In-process and finished	139,058	97,109
Supplies	53,014	43,655
Total	$ 279,520	$ 196,230

Plant, Equipment and Timberla_3

Plant, Equipment and Timberlands - Summary of Plant, Equipment and Timberlands (Detail) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Accumulated depreciation	$ (591,803)	$ (569,386)
Subtotal	702,654	519,919
Construction in progress	56,156	23,330
Timberlands, less depletion	2	18
Total	758,812	543,267	$ 537,421
Land and buildings
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	236,347	173,646
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	838,999	754,737
Furniture, fixtures, and other
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 219,111	$ 160,922

Plant, Equipment and Timberla_4

Plant, Equipment and Timberlands - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Property, Plant and Equipment [Abstract]
Accrued capital expenditures	$ 7.1	$ 3.1

Goodwill and Intangible Asset_2

Goodwill and Intangible Assets - Summary of Changes in Amounts of Goodwill and Other Intangible Assets (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Goodwill
Goodwill, beginning balance	$ 164,369
Acquisitions	84,648
Translation	(12,852)
Goodwill, ending balance	236,165	$ 164,369
Finite-lived Intangible Assets [Roll Forward]
Accumulated amortization, beginning balance	(51,829)
Net intangibles, Amortization	(9,753)	(8,014)	$ (7,986)
Accumulated amortization, ending balance	(57,718)	(51,829)
Net intangibles, Acquisitions	90,240
Total intangibles	214,022	133,664
Intangible assets, net	156,304	81,835
Intangible assets, gross, translation	(9,882)
Intangible assets, accumulated amortization, translation	3,864
Intangible assets, net, translation	(6,018)
Composite Fibers
Goodwill
Goodwill, beginning balance	84,586
Translation	(6,148)
Goodwill, ending balance	78,438	84,586
Composite Fibers | Tradename
Indefinite-lived Intangible Assets [Roll Forward]
Indefinite intangibles, beginning balance	3,902
Indefinite intangibles, Translation	(301)
Indefinite intangibles, ending balance	3,601	3,902
Composite Fibers | Technology and related
Finite-lived Intangible Assets [Roll Forward]
Total intangibles, beginning balance	41,578
Total intangibles, Translation	(2,964)
Total intangibles, ending balance	38,614	41,578
Accumulated amortization, beginning balance	(18,636)
Net intangibles, Amortization	(1,845)
Accumulated amortization, Translation	1,257
Accumulated amortization, ending balance	(19,224)	(18,636)
Net intangibles, beginning balance	22,942
Net intangibles, Translation	(1,707)
Net intangibles, ending balance	19,390	22,942
Composite Fibers | Customer relationships and related
Finite-lived Intangible Assets [Roll Forward]
Total intangibles, beginning balance	37,535
Total intangibles, Translation	(2,796)
Total intangibles, ending balance	34,739	37,535
Accumulated amortization, beginning balance	(21,290)
Net intangibles, Amortization	(2,478)
Accumulated amortization, Translation	1,664
Accumulated amortization, ending balance	(22,104)	(21,290)
Net intangibles, beginning balance	16,245
Net intangibles, Translation	(1,132)
Net intangibles, ending balance	12,635	16,245
Airlaid Materials
Goodwill
Goodwill, beginning balance	79,783
Acquisitions	35,793
Translation	(6,090)
Goodwill, ending balance	109,486	79,783
Airlaid Materials | Tradename
Finite-lived Intangible Assets [Roll Forward]
Total intangibles, beginning balance	3,960
Total intangibles, Translation	525
Total intangibles, ending balance	4,485	3,960
Accumulated amortization, beginning balance	(456)
Net intangibles, Amortization	(190)
Accumulated amortization, Translation	43
Accumulated amortization, ending balance	(603)	(456)
Net intangibles, beginning balance	3,504
Net intangibles, Translation	568
Net intangibles, ending balance	3,882	3,504
Airlaid Materials | Technology and related
Finite-lived Intangible Assets [Roll Forward]
Total intangibles, beginning balance	20,053
Total intangibles, Translation	(2,228)
Total intangibles, ending balance	17,825	20,053
Accumulated amortization, beginning balance	(3,591)
Net intangibles, Amortization	(1,268)
Accumulated amortization, Translation	307
Accumulated amortization, ending balance	(4,552)	(3,591)
Net intangibles, beginning balance	16,462
Net intangibles, Translation	(1,921)
Net intangibles, ending balance	13,273	16,462
Airlaid Materials | Customer relationships and related
Finite-lived Intangible Assets [Roll Forward]
Total intangibles, beginning balance	26,636
Total intangibles, Translation	(2,051)
Total intangibles, ending balance	44,585	26,636
Accumulated amortization, beginning balance	(7,856)
Net intangibles, Amortization	(3,249)
Accumulated amortization, Translation	593
Accumulated amortization, ending balance	(10,512)	(7,856)
Net intangibles, beginning balance	18,780
Net intangibles, Acquisitions	20,000
Net intangibles, Translation	(1,458)
Net intangibles, ending balance	34,073	18,780
Spunlace
Goodwill
Goodwill, beginning balance	0
Acquisitions	48,855
Translation	(614)
Goodwill, ending balance	48,241	0
Spunlace | Tradename
Finite-lived Intangible Assets [Roll Forward]
Total intangibles, beginning balance	0
Total intangibles, Translation	(26)
Total intangibles, ending balance	27,623	0
Accumulated amortization, beginning balance	0
Net intangibles, Amortization	(253)
Accumulated amortization, Translation	0
Accumulated amortization, ending balance	(253)	0
Net intangibles, beginning balance	0
Net intangibles, Acquisitions	27,649
Net intangibles, Translation	(26)
Net intangibles, ending balance	27,370	0
Spunlace | Technology and related
Finite-lived Intangible Assets [Roll Forward]
Total intangibles, beginning balance	0
Total intangibles, Translation	(14)
Total intangibles, ending balance	14,547	0
Accumulated amortization, beginning balance	0
Net intangibles, Amortization	(202)
Accumulated amortization, Translation	0
Accumulated amortization, ending balance	(202)	0
Net intangibles, beginning balance	0
Net intangibles, Acquisitions	14,561
Net intangibles, Translation	(14)
Net intangibles, ending balance	14,345	0
Spunlace | Customer relationships and related
Finite-lived Intangible Assets [Roll Forward]
Total intangibles, beginning balance	0
Total intangibles, Translation	(27)
Total intangibles, ending balance	28,003	0
Accumulated amortization, beginning balance	0
Net intangibles, Amortization	(268)
Accumulated amortization, Translation	0
Accumulated amortization, ending balance	(268)	0
Net intangibles, beginning balance	0
Net intangibles, Acquisitions	28,030
Net intangibles, Translation	(27)
Net intangibles, ending balance	$ 27,735	$ 0

Goodwill and Intangible Asset_3

Goodwill and Intangible Assets - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2021
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, useful life	13 years 2 months 12 days
Tradename | Minimum
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, useful life	14 years
Tradename | Maximum
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, useful life	20 years
Technical know-how | Minimum
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, useful life	7 years
Technical know-how | Maximum
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, useful life	20 years
Customer relationships and related | Minimum
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, useful life	11 years
Customer relationships and related | Maximum
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, useful life	20 years

Goodwill and Intangible Asset_4

Goodwill and Intangible Assets - Summary of Amortization of Intangible Assets (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Aggregate amortization expense:	$ 9,753	$ 8,014	$ 7,986
2022	13,966
2023	13,966
2024	13,966
2025	13,966
2026	$ 13,966

Other Long-Term Assets (Detail)

Other Long-Term Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Other Assets, Noncurrent [Abstract]
Right-of-use asset operating leases	$ 27,186	$ 11,789
Deferred taxes	15,345	2
Restricted cash	8,378	10,084
Other	41,851	22,610
Total	$ 92,760	$ 44,485

Other Current Liabilities (Deta

Other Current Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Other Liabilities, Current [Abstract]
Accrued payroll and benefits	$ 25,572	$ 21,726
Other accrued compensation and retirement benefits	5,633	9,376
Income taxes payable	11,746	4,781
Accrued rebates	6,327	4,002
Other accrued expenses	50,160	31,208
Total	$ 99,438	$ 71,093

Leases - Summary of Information

Leases - Summary of Information Related to Leases (Detail) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Leases [Abstract]
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Other assets	Other assets
Right-of-use asset operating leases	$ 27,186	$ 11,789
Weighted average discount rate	3.31%	2.94%
Weighted average remaining maturity (years)	26 years	5 years 6 months

Leases - Summary of Operating L

Leases - Summary of Operating Lease Expense (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Leases [Abstract]
Operating lease expense	$ 5,742	$ 5,876

Leases - Summary of Minimum Lea

Leases - Summary of Minimum Lease Payments (Detail) $ in Thousands	Dec. 31, 2021USD ($)
Leases [Abstract]
2022	$ 6,479
2023	3,921
2024	3,028
2025	2,618
2026	2,541
Thereafter	$ 38,588

Long-Term Debt - Summary of Lon

Long-Term Debt - Summary of Long-Term Debt (Detail) - USD ($)	Dec. 31, 2021	Oct. 25, 2021	Dec. 31, 2020	Jul. 01, 2019
Debt Instrument [Line Items]
Total long-term debt	$ 775,941,000		$ 315,419,000
Less current portion	(26,437,000)		(25,057,000)
Unamortized deferred issuance costs	(11,429,000)		(1,898,000)
Long-term debt, net of current portion	738,075,000		288,464,000
Interest rate on debt				1.25%
4.750% Senior Notes, due Oct. 2029
Debt Instrument [Line Items]
Total long-term debt	$ 500,000,000	$ 500,000,000	0
Interest rate on debt	4.75%	4.75%
Term loan, due Feb 2024
Debt Instrument [Line Items]
Total long-term debt	$ 218,026,000		249,715,000
2.40% Term Loan, due Jun 2022
Debt Instrument [Line Items]
Total long-term debt	$ 809,000		2,629,000
Interest rate on debt	2.40%
2.05% Term Loan, due Mar 2023
Debt Instrument [Line Items]
Total long-term debt	$ 7,556,000		14,737,000
Interest rate on debt	2.05%
1.30% Term Loan, due Jun 2023
Debt Instrument [Line Items]
Total long-term debt	$ 2,427,000		4,382,000
Interest rate on debt	1.30%
1.55% Term Loan, due Sep 2025
Debt Instrument [Line Items]
Total long-term debt	$ 5,204,000		7,143,000
Interest rate on debt	1.55%
1.10% Term Loan, due Mar 2024
Debt Instrument [Line Items]
Total long-term debt	$ 9,267,000		0
Interest rate on debt	1.10%
0.57% Term Loan, due Jul 2023
Debt Instrument [Line Items]
Total long-term debt	$ 22,652,000		0
Interest rate on debt	0.57%
Revolving credit facility, due Sep. 2026
Debt Instrument [Line Items]
Total long-term debt	$ 10,000,000		$ 36,813,000

Long-Term Debt - Additional Inf

Long-Term Debt - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2021USD ($)	Oct. 29, 2023	Oct. 29, 2021	Oct. 25, 2021USD ($)	Sep. 02, 2021USD ($)	Sep. 02, 2021EUR (€)	Dec. 31, 2020USD ($)	Jul. 01, 2019
Debt Instrument [Line Items]
Interest rate on debt								1.25%
Carrying Value	$ 775,941,000						$ 315,419,000
Amortization expense related to deferred debt issuance costs	900,000
Letters of credit outstanding	$ 0
4.750% Senior Notes, due Oct. 2029
Debt Instrument [Line Items]
Interest rate on debt	4.75%			4.75%
Carrying Value	$ 500,000,000			$ 500,000,000			0
Revolving Credit Facility
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity					$ 400,000,000
Net debt to EBITDA ratio, maximum			5.25
Debt instrument covenant compliance leverage ratio, actual	3.8
Revolving Credit Facility | Forecast
Debt Instrument [Line Items]
Net debt to EBITDA ratio, maximum		4
Revolving Credit Facility | Minimum
Debt Instrument [Line Items]
Federal fund rate spread	0.125%
Revolving Credit Facility | Maximum
Debt Instrument [Line Items]
Federal fund rate spread	1.00%
Revolving Credit Facility | Euro Rate
Debt Instrument [Line Items]
Federal fund rate spread	1.00%
Revolving Credit Facility | EURIBOR | Minimum
Debt Instrument [Line Items]
Federal fund rate spread	1.125%
Revolving Credit Facility | EURIBOR | Maximum
Debt Instrument [Line Items]
Federal fund rate spread	2.00%
Revolving Credit Facility | Overnight Banking Funding Rate
Debt Instrument [Line Items]
Federal fund rate spread	0.50%
Term Loan Facility
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity | €						€ 220,000,000
Letters of Credit
Debt Instrument [Line Items]
Letters of credit issued	$ 6,700,000						$ 7,300,000

Long-Term Debt - Amortization o

Long-Term Debt - Amortization of Term Loan Agreements Together with Maturities of Other Long-term Debt (Detail) $ in Thousands	Dec. 31, 2021USD ($)
Debt Disclosure [Abstract]
2022	$ 26,438
2023	42,938
2024	195,525
2025	1,040
2026	10,000
Thereafter	$ 500,000

Fair Value of Financial Instr_3

Fair Value of Financial Instruments (Detail) - USD ($)	Dec. 31, 2021	Oct. 25, 2021	Dec. 31, 2020	Jul. 01, 2019
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying Value	$ 775,941,000		$ 315,419,000
Fair Value	792,906,000		315,646,000
Interest rate on debt				1.25%
Variable rate debt
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying Value	10,000,000		36,813,000
Fair Value	10,000,000		36,813,000
4.750% Senior Notes, due Oct. 2029
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying Value	500,000,000	$ 500,000,000	0
Fair Value	$ 516,875,000		0
Interest rate on debt	4.75%	4.75%
Term loan, due Feb 2024
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying Value	$ 218,026,000		249,715,000
Fair Value	218,026,000		249,715,000
2.40% Term Loan, due Jun 2022
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying Value	809,000		2,629,000
Fair Value	$ 813,000		2,651,000
Interest rate on debt	2.40%
2.05% Term Loan, due Mar 2023
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying Value	$ 7,556,000		14,737,000
Fair Value	$ 7,616,000		14,873,000
Interest rate on debt	2.05%
1.30% Term Loan, due Jun 2023
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying Value	$ 2,427,000		4,382,000
Fair Value	$ 2,433,000		4,384,000
Interest rate on debt	1.30%
1.55% Term Loan, due Sep 2025
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying Value	$ 5,204,000		7,143,000
Fair Value	$ 5,234,000		7,210,000
Interest rate on debt	1.55%
1.10% Term Loan
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying Value	$ 9,267,000		0
Fair Value	9,252,000		0
0.57% Term Loan, due Jul 2023
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying Value	22,652,000		0
Fair Value	$ 22,657,000		$ 0
Interest rate on debt	0.57%

Financial Derivatives and Hed_3

Financial Derivatives and Hedging Activities - Additional Information (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2021USD ($)	Dec. 31, 2020USD ($)	Dec. 31, 2021EUR (€)	Oct. 31, 2019EUR (€)
Derivative [Line Items]
Carrying Value | $	$ 775,941	$ 315,419
Pre-tax gain (loss) from changes in currency exchange rates | $	$ 18,600	$ (21,100)
Term Loans
Derivative [Line Items]
Line of credit facility, maximum borrowing capacity			€ 220,000,000
Floating-to-fixed Interest Rate Swap Agreement
Derivative [Line Items]
Derivative notional amount				€ 180,000,000
Derivative fixed interest rate				0.0395%
Loans variable rate of interest				€ 180,000,000
Floating-to-fixed Interest Rate Swap Agreement | Term Loans
Derivative [Line Items]
Carrying Value				€ 180,000
Maximum | Foreign Exchange | Gains on cash flow hedges
Derivative [Line Items]
Accumulated other comprehensive income realization period	18 months
Minimum
Derivative [Line Items]
Long-term debt percentage bearing fixed Interest rate				0.00%
Minimum | Foreign Exchange | Gains on cash flow hedges
Derivative [Line Items]
Accumulated other comprehensive income realization period	12 months
Designated as Hedging | Foreign Exchange
Derivative [Line Items]
Maturities of foreign currency derivative contracts	18 months
Designated as Hedging | Cash Flow Hedges | Maximum
Derivative [Line Items]
Period of production costs expected to be incurred	18 months
Not Designated as Hedging
Derivative [Line Items]
Maturities of foreign currency derivative contracts	1 month

Financial Derivatives and Hed_4

Financial Derivatives and Hedging Activities - Outstanding Derivatives Used to Hedge Foreign Exchange Risks (Detail)	Dec. 31, 2021EUR (€)	Dec. 31, 2021PHP (₱)	Dec. 31, 2021USD ($)	Dec. 31, 2021CAD ($)	Dec. 31, 2021GBP (£)	Dec. 31, 2020EUR (€)	Dec. 31, 2020PHP (₱)	Dec. 31, 2020USD ($)	Dec. 31, 2020CAD ($)	Dec. 31, 2020GBP (£)
Cash Flow Hedges | Euro to British Pound | Designated as Hedging | Sell Notional
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Derivative notional amount | €	€ 18,823,000					€ 18,638,000
Cash Flow Hedges | Philippine Peso To Euro | Designated as Hedging | Sell Notional
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Derivative notional amount | ₱		₱ 0					₱ 18,522,000
Cash Flow Hedges | U S Dollar To Euro | Designated as Hedging | Sell Notional
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Derivative notional amount			$ 658,000					$ 1,041,000
Cash Flow Hedges | Canadian Dollar / U.S. Dollar | Designated as Hedging | Sell Notional
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Derivative notional amount				$ 0					$ 70,000
Cash Flow Hedges | U.S. Dollar / Canadian Dollar | Designated as Hedging | Buy Notional
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Derivative notional amount				$ 36,904,000					$ 34,847,000
Cash Flow Hedges | Euro To Philippine Peso | Designated as Hedging | Buy Notional
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Derivative notional amount | ₱		896,291,000					853,686,000
Cash Flow Hedges | British Pound / Philippine Peso | Designated as Hedging | Buy Notional
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Derivative notional amount | ₱		₱ 1,121,183,000					₱ 1,081,791,000
Cash Flow Hedges | Euro / U.S. Dollar | Designated as Hedging | Buy Notional
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Derivative notional amount			108,467,000					69,324,000
Cash Flow Hedges | U S Dollar To British Pound | Designated as Hedging | Sell Notional
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Derivative notional amount			16,205,000					0
Foreign Currency Hedges | Euro to British Pound | Not Designated as Hedging | Sell Notional
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Derivative notional amount | €	0					600,000
Foreign Currency Hedges | Euro / U.S. Dollar | Not Designated as Hedging | Sell Notional
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Derivative notional amount | €	11,000,000					0
Foreign Currency Hedges | Euro / U.S. Dollar | Not Designated as Hedging | Buy Notional
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Derivative notional amount			20,900,000					7,500,000
Foreign Currency Hedges | U S Dollar To British Pound | Not Designated as Hedging | Sell Notional
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Derivative notional amount			26,600,000					25,250,000
Foreign Currency Hedges | British Pound To Euro | Not Designated as Hedging | Sell Notional
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Derivative notional amount | £					£ 3,400,000					£ 1,900,000
Foreign Currency Hedges | British Pound To Euro | Not Designated as Hedging | Buy Notional
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Derivative notional amount | €	5,300,000					0
Foreign Currency Hedges | US Dollar To Swiss Franc | Not Designated as Hedging | Sell Notional
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Derivative notional amount			$ 2,180,000					$ 0
Foreign Currency Hedges | British Pound To Swiss Franc | Not Designated as Hedging | Sell Notional
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Derivative notional amount | £					£ 1,025,000					£ 0
Foreign Currency Hedges | Euro To Swiss Franc | Not Designated as Hedging | Sell Notional
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Derivative notional amount | €	€ 2,750,000					€ 0

Financial Derivatives and Hed_5

Financial Derivatives and Hedging Activities - Fair Values of Derivative Instruments (Detail) - Forward Foreign Currency Exchange Contracts - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Designated as Hedging | Prepaid Expenses and Other Current Assets
Derivatives Fair Value [Line Items]
Derivative asset, fair value	$ 3,197	$ 577
Designated as Hedging | Other Current Liabilities
Derivatives Fair Value [Line Items]
Derivative liability, fair value	288	4,342
Designated as Hedging | Interest Rate Swap | Prepaid Expenses and Other Current Assets
Derivatives Fair Value [Line Items]
Derivative asset, fair value	0	0
Designated as Hedging | Interest Rate Swap | Other Current Liabilities
Derivatives Fair Value [Line Items]
Derivative liability, fair value	44	136
Not Designated as Hedging | Prepaid Expenses and Other Current Assets
Derivatives Fair Value [Line Items]
Derivative asset, fair value	701	456
Not Designated as Hedging | Other Current Liabilities
Derivatives Fair Value [Line Items]
Derivative liability, fair value	$ 116	$ 118

Financial Derivatives and Hed_6

Financial Derivatives and Hedging Activities - Income or Loss from Derivative Instruments Recognized in Results of Operations (Detail) - Forward Foreign Currency Exchange Contracts - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Effective portion – cost of products sold | Designated as Hedging
Derivative Instruments Gain Loss [Line Items]
Derivative instruments, gain (loss)	$ 382	$ 5,503	$ 6,468
Other - Net | Not Designated as Hedging
Derivative Instruments Gain Loss [Line Items]
Derivative instruments, gain (loss)	2,666	1,679	300
Interest expense | Designated as Hedging
Derivative Instruments Gain Loss [Line Items]
Derivative instruments, gain (loss)	$ 85	$ 83	$ 0

Financial Derivatives and Hed_7

Financial Derivatives and Hedging Activities - Fair Value Amounts Recorded as Component of Accumulated Other Comprehensive Income (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Fair Value Amounts Of Derivative Assets Recorded As A Component Of AOCI [Roll Forward]
Beginning Balance	$ 577,932	$ 555,959
Ending Balance	542,762	577,932
Gains on cash flow hedges
Fair Value Amounts Of Derivative Assets Recorded As A Component Of AOCI [Roll Forward]
Beginning Balance	(2,496)	4,316
Ending Balance	1,988	(2,496)
Gains on cash flow hedges | Fair Value, Inputs, Level 2 | Foreign Exchange
Fair Value Amounts Of Derivative Assets Recorded As A Component Of AOCI [Roll Forward]
Beginning Balance	(3,460)	5,859
Deferred (losses) gains on cash flow hedges	6,646	(3,899)
Reclassified to earnings	(297)	(5,420)
Ending Balance	$ 2,889	$ (3,460)

Shareholders' Equity (Detail)

Shareholders' Equity (Detail) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statement of Stockholders' Equity [Abstract]
Shares outstanding at beginning of year (in shares)	44,368	44,248	43,959
Treasury shares issued for:
Restricted stock awards (in shares)	181	110	188
Employee stock options exercised (in shares)	0	10	101
Shares outstanding at end of year (in shares)	44,549	44,368	44,248

Commitments, Contingencies an_3

Commitments, Contingencies and Legal Proceedings - Minimum Annual Payment Due (Detail) $ in Thousands	Dec. 31, 2021USD ($)
Leases
2022	$ 6,479
2023	3,921
2024	3,028
2025	2,618
2026	2,541
Thereafter	38,588
Other
2022	0
2023	19,154
2024	0
2025	0
2026	0
Thereafter	$ 0

Commitments, Contingencies an_4

Commitments, Contingencies and Legal Proceedings - Additional Information (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2021USD ($)Operable_Unit	Dec. 31, 2020USD ($)
Commitments Contingencies And Litigation [Line Items]
Annual payments due under operating leases	$ 57,200
Other obligations	$ 19,200
Number of operable units | Operable_Unit	5
Difference recorded in escrow account	$ 1,700
Total amount available in escrow account	8,700
Reserve for environmental liabilities, current portion	2,200	$ 3,700
Other long-term liabilities
Commitments Contingencies And Litigation [Line Items]
Reserve for environmental liabilities, remaining portion	$ 14,000

Commitments, Contingencies an_5

Commitments, Contingencies and Legal Proceedings - Schedule of Reserves (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Reserve For Government Oversight Costs And Maintenance [Roll Forward]
Beginning balance	$ 18,455	$ 21,870
Payments	(2,458)	(3,622)
Accretion	203	207
Ending balance	$ 16,200	$ 18,455

Segment and Geographic Inform_3

Segment and Geographic Information - Schedule of Financial and Other Information by Segment (Detail) T in Thousands, $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2021USD ($)	Dec. 31, 2021USD ($)T	Dec. 31, 2020USD ($)T	Dec. 31, 2019USD ($)T
Segment Reporting Information [Line Items]
Type of Revenue [Extensible List]		Net sales	Net sales	Net sales
Net sales		$ 1,084,694	$ 916,498	$ 927,673
Operating income		28,614	49,156	54,635
Depreciation, depletion and amortization		61,421	56,600	50,820
Capital expenditures		$ 30,037	$ 28,136	$ 27,765
Tons shipped (metric) | T		292,844	271,419	271,068
Plant, equipment and timberlands, net	758,812	$ 758,812	$ 543,267	$ 537,421
Corporate, Non-Segment
Segment Reporting Information [Line Items]
Operating income		(49,714)	(49,242)	(34,366)
Depreciation, depletion and amortization		3,937	8,009	3,531
Capital expenditures		5,884	5,563	2,126
Plant, equipment and timberlands, net	23,565	23,565	22,017	20,932
Composite Fibers
Segment Reporting Information [Line Items]
Net sales		$ 556,807	$ 525,089	$ 521,666
Tons shipped (metric) | T		132,196	134,758	133,473
Composite Fibers | Operating Segments
Segment Reporting Information [Line Items]
Net sales		$ 556,807	$ 525,089	$ 521,666
Operating income		37,422	52,094	47,883
Depreciation, depletion and amortization		27,690	26,175	26,153
Capital expenditures		11,912	13,262	11,972
Plant, equipment and timberlands, net	202,445	202,445	225,444	222,710
Airlaid Materials
Segment Reporting Information [Line Items]
Net sales		$ 470,250	$ 391,409	$ 406,007
Tons shipped (metric) | T		148,134	136,661	137,595
Airlaid Materials | Operating Segments
Segment Reporting Information [Line Items]
Net sales		$ 470,250	$ 391,409	$ 406,007
Operating income		42,244	46,304	41,118
Depreciation, depletion and amortization		28,101	22,416	21,136
Capital expenditures		8,431	9,311	13,667
Plant, equipment and timberlands, net	371,324	371,324	295,806	293,779
Spunlace
Segment Reporting Information [Line Items]
Net sales		$ 57,637	$ 0	$ 0
Tons shipped (metric) | T		12,514	0	0
Spunlace | Operating Segments
Segment Reporting Information [Line Items]
Net sales		$ 57,637	$ 0	$ 0
Operating income		(1,338)	0	0
Depreciation, depletion and amortization		1,693	0	0
Capital expenditures		3,810	0	0
Plant, equipment and timberlands, net	$ 161,478	$ 161,478	$ 0	$ 0

Segment and Geographic Inform_4

Segment and Geographic Information - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Procter & Gamble Company | Sales Revenue, Net | Customer Concentration Risk
Segment Reporting Revenue Reconciling Item [Line Items]
Concentration risk, percentage	16.00%	16.00%	16.00%

Segment and Geographic Inform_5

Segment and Geographic Information - Schedule of Net Sales to External Customers and Locations (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales		$ 1,084,694	$ 916,498	$ 927,673
Plant, equipment and timberlands, net	758,812	758,812	543,267	537,421
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales		255,086	166,131	167,887
Plant, equipment and timberlands, net	326,668	326,668	103,570	105,763
Germany
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales		513,043	489,655	504,012
Plant, equipment and timberlands, net	251,375	251,375	286,591	274,146
United Kingdom
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales		82,144	73,604	70,018
Plant, equipment and timberlands, net	50,420	50,420	50,140	52,039
Canada
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales		120,808	112,128	121,789
Plant, equipment and timberlands, net	65,291	65,291	68,975	72,436
Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales		113,613	74,980	63,967
Plant, equipment and timberlands, net	$ 65,057	$ 65,057	$ 33,991	$ 33,037

Valuation and Qualifying Acco_2

Valuation and Qualifying Accounts (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Doubtful Accounts
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance, beginning of year	$ 2,093	$ 1,682	$ 1,661
Provision	469	488	720
Write-offs, recoveries and discounts allowed	(10)	(114)	(678)
Other	179	37	(21)
Balance, end of year	2,731	2,093	1,682
Sales Discounts and Deductions
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance, beginning of year	791	578	832
Provision	1,649	1,516	1,440
Write-offs, recoveries and discounts allowed	(1,493)	(1,291)	(1,526)
Other	(122)	(12)	(168)
Balance, end of year	$ 825	$ 791	$ 578