Neenah (NP) 10-K 18 Feb 22 2021 FY Annual report Financial data

Cover Page

Cover Page - USD ($)	12 Months Ended
	Dec. 31, 2021	Feb. 16, 2022	Jun. 30, 2021
Cover [Abstract]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2021
Current Fiscal Year End Date	--12-31
Document Transition Report	false
Entity File Number	001-32240
Entity Registrant Name	Neenah Inc
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	20-1308307
Entity Address, Address Line One	3460 Preston Ridge Road
Entity Address, City or Town	Alpharetta
Entity Address, State or Province	GA
Entity Address, Postal Zip Code	30005
City Area Code	678
Local Phone Number	566-6500
Title of 12(b) Security	Common Stock — $0.01 Par Value
Trading Symbol	NP
Security Exchange Name	NYSE
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Public Float			$ 702,272,937
Entity Common Stock, Shares Outstanding (in shares)		16,787,000
Documents Incorporated by Reference	Certain information contained in the definitive proxy statement for the Company's Annual Meeting of Stockholders to be held on May 19, 2022 is incorporated by reference into Part III hereof.
Entity Central Index Key	0001296435
Amendment Flag	false
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	FY

Audit Information

Audit Information	12 Months Ended
	Dec. 31, 2021
Audit Information [Abstract]
Auditor Name	Deloitte & Touche LLP
Auditor Firm ID	34
Auditor Location	Atlanta, Georgia

CONSOLIDATED STATEMENTS OF OPER

CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Statement [Abstract]
Net Sales	$ 1,028.5	$ 792.6	$ 938.5
Cost, Product and Service [Extensible Enumeration]	Product	Product	Product
Cost of products sold	$ 865.2	$ 639.4	$ 755.1
Gross Profit	163.3	153.2	183.4
Selling, general and administrative expenses	101.4	88	98.6
Impairment and asset restructuring costs (Note 13)	35.2	57.8	4.7
Pension and SERP settlement and curtailment losses (gains) (Note 8)	17.4	1.6	(1.4)
Acquisition-related costs (Note 4)	13	1.5	0
Loss on debt extinguishment (Note 7)	7.2	1.9	0
Other restructuring and non-routine costs	1.9	4.2	1.5
COVID-19 costs	1.6	3.5	0
Other expense (income), net	(2.6)	0.8	1.7
Operating Income (Loss)	(11.8)	(6.1)	78.3
Interest expense	17.9	12.6	11.8
Income (Loss) Before Income taxes	(29.7)	(18.7)	66.5
Provision (benefit) for income taxes	(4.8)	(2.9)	11.1
Net Income (Loss)	$ (24.9)	$ (15.8)	$ 55.4
Earnings (Loss) Per Common Share
Basic (in dollars per share)	$ (1.49)	$ (0.96)	$ 3.27
Diluted (in dollars per share)	$ (1.49)	$ (0.96)	$ 3.26
Weighted Average Common Shares Outstanding
Basic (in shares)	16,821	16,813	16,848
Diluted (in shares)	16,821	16,813	16,906

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statement of Comprehensive Income [Abstract]
Net Income (Loss)	$ (24.9)	$ (15.8)	$ 55.4
Reclassification of amounts recognized in the consolidated statement of operations:
Amortization of adjustments to pension and other post-employment benefit liabilities	6	6.6	6
Pension plan settlement and curtailment losses	15.7	0.3	1.3
Amounts recognized in the consolidated statement of operations	21.7	6.9	7.3
Unrealized foreign currency translation gain (loss)	(24)	18	(3.5)
Net gain (loss) from pension and other post-employment benefit plans	18.6	(17.2)	(13.7)
Income (Loss) From Other Comprehensive Income Items Before Income Taxes	16.3	7.7	(9.9)
Provision (benefit) for income taxes	9.5	(1.9)	(1.7)
Other Comprehensive Income (Loss)	6.8	9.6	(8.2)
Comprehensive Income (Loss)	$ (18.1)	$ (6.2)	$ 47.2

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Current Assets
Cash and cash equivalents	$ 23.9	$ 37.1
Accounts receivable, net	142.3	100.2
Inventories	138.5	108.9
Asset held for sale (Note 13)	10.5	0
Prepaid and other current assets	31.8	25.1
Total Current Assets	347	271.3
Property, Plant and Equipment, net	295.5	329.4
Finance Lease Right-of-Use Assets (Note 11)	20.8	0
Operating Lease Right-of- Use Assets (Note 11)	17.8	20.2
Deferred Income Taxes (Note 6)	25.1	18.3
Goodwill (Note 5)	198.6	87.4
Intangible Assets, net (Note 5)	154.6	62.6
Over-funded Employee Benefit Plan (Note 8)	9.5	0
Other Assets	12.8	17.4
TOTAL ASSETS	1,081.7	806.6
Current Liabilities
Debt payable within one year (Note 7)	6.4	4.9
Finance lease liabilities payable within one year	0.8	0
Operating lease liabilities payable within one year	3.3	3.2
Accounts payable	97.4	46
Liabilities of assets held for sale (Note 13)	0.5	0
Accrued expenses	66.6	61.9
Total Current Liabilities	175	116
Long-term Debt (Note 7)	434.9	189.5
Finance Lease Liability, Noncurrent	20.4	0
Operating Lease Liabilities, Noncurrent	15.9	18.4
Noncurrent Employee Benefit Obligations (Note 8)	77.7	96.8
Deferred Income Taxes (Note 6)	38.2	12.3
Other Noncurrent Obligations	3.6	6
TOTAL LIABILITIES	765.7	439
Commitments and Contingencies (Note 12)
Stockholders' Equity
Common stock, par value $0.01, authorized: 100,000,000 shares; issued and outstanding: 16,779,000 shares and 16,829,000 shares	0.2	0.2
Treasury stock, at cost: 2,040,000 shares and 1,917,000 shares	(93.6)	(87.6)
Additional paid-in capital	342.9	338.3
Retained earnings	163.4	220.4
Accumulated other comprehensive loss	(96.9)	(103.7)
Total Stockholders' Equity	316	367.6
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 1,081.7	$ 806.6

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Dec. 31, 2021	Dec. 31, 2020
Statement of Financial Position [Abstract]
Par value of shares of common stock (in dollars per share)	$ 0.01	$ 0.01
Common stock, authorized shares (in shares)	100,000,000	100,000,000
Common stock, issued shares (in shares)	16,779,000	16,829,000
Common stock, outstanding shares (in shares)	16,779,000	16,829,000
Treasury stock, shares (in shares)	2,040,000	1,917,000

CONSOLIDATED STATEMENTS OF CHAN

CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Millions	Total	Common Stock	Treasury Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Loss
Beginning balance (in shares) at Dec. 31, 2018		18,597
Beginning balance at Dec. 31, 2018		$ 0.2	$ (76.6)	$ 328.5	$ 243.2	$ (105.1)
Increase (Decrease) in Stockholders' Equity
Net Income (Loss)	$ 55.4				55.4
Other comprehensive income (loss), after income tax	(8.2)					(8.2)
Dividends declared					(30.5)
Shares purchased (Note 10)			(4.9)
Stock options exercised (in shares)		17
Restricted stock vesting (Note 10) (in shares)		64
Restricted stock vesting (Note 9)			(1.3)
Stock-based compensation				5.6
Ending balance (in shares) at Dec. 31, 2019		18,678
Ending balance at Dec. 31, 2019		$ 0.2	(82.8)	334.1	268.1	(113.3)
Increase (Decrease) in Stockholders' Equity
Net Income (Loss)	(15.8)				(15.8)
Other comprehensive income (loss), after income tax	9.6					9.6
Dividends declared					(31.9)
Shares purchased (Note 10)			(3.6)
Stock options exercised (in shares)		6
Restricted stock vesting (Note 10) (in shares)		62
Restricted stock vesting (Note 9)			(1.2)
Stock-based compensation				4.2
Ending balance (in shares) at Dec. 31, 2020		18,746
Ending balance at Dec. 31, 2020	367.6	$ 0.2	(87.6)	338.3	220.4	(103.7)
Increase (Decrease) in Stockholders' Equity
Net Income (Loss)	(24.9)				(24.9)
Other comprehensive income (loss), after income tax	6.8					6.8
Dividends declared					(32.1)
Shares purchased (Note 10)			(5)
Stock options exercised (in shares)		8
Restricted stock vesting (Note 10) (in shares)		65
Restricted stock vesting (Note 9)			(1)
Stock-based compensation				4.5
Other				0.1
Ending balance (in shares) at Dec. 31, 2021		18,819
Ending balance at Dec. 31, 2021	$ 316	$ 0.2	$ (93.6)	$ 342.9	$ 163.4	$ (96.9)

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
OPERATING ACTIVITIES
Net income (loss)	$ (24.9)	$ (15.8)	$ 55.4
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	42.7	36.7	38.9
Stock-based compensation	4.5	4.2	5.6
Deferred income tax provision (benefit)	(16)	(4.9)	3.4
Asset impairment costs (Note 13)	32.4	54.8	0
Loss on debt extinguishment (Note 7)	7.2	1.9	0
Loss on foreign currency forward contracts (Note 4)	5.1	0	0
Pension and SERP settlement and curtailment losses (gains) (Note 8)	17.4	1.6	(1.4)
Loss on asset dispositions	0.6	0	0.1
Non-cash effects of changes in liabilities for uncertain income tax positions	(0.1)	(0.2)	(0.7)
Net cash provided by (used in) changes in operating working capital, net of effect of acquisitions (Note 15)	(5.3)	18.2	(0.6)
Pension and other post-employment benefits	(7.9)	(5.8)	(3.7)
Noncurrent payroll taxes	(2.2)	2.2	0
Other	(0.3)	0.5	0.6
Net Cash Provided By Operating Activities	53.2	93.4	97.6
INVESTING ACTIVITIES
Capital expenditures	(28.2)	(18.9)	(21.4)
Business acquisition (Note 4)	(240.2)	0	0
Proceeds from sale of property, plant and equipment (Note 13)	0	0.5	0
Sales (purchases) of marketable securities	3.7
Sales (purchases) of marketable securities		(0.1)	(0.4)
Other	0.4	(1)	(1.5)
Net Cash Used In Investing Activities	(264.3)	(19.5)	(23.3)
FINANCING ACTIVITIES
Proceeds from issuance of long-term debt (Note 7)	459.7	291.6	163.5
Debt issuance costs (Note 7)	(9.1)	(6)	(0.4)
Repayments of long-term debt (Note 7)	(212.8)	(295.9)	(201.6)
Cash dividends paid	(31.9)	(31.9)	(30.5)
Shares purchased (Note 10)	(6)	(4.8)	(6.2)
Other	(0.7)	0	0
Net Cash Provided By (Used In) Financing Activities	199.2	(47)	(75.2)
Effect of Exchange Rate Changes on Cash and Cash Equivalents	(1.3)	1.2	0
Net Increase (Decrease) in Cash and Cash Equivalents	(13.2)	28.1	(0.9)
Cash and Cash Equivalents, Beginning of Year	37.1	9	9.9
Cash and Cash Equivalents, End of Year	$ 23.9	$ 37.1	$ 9

Background and Basis of Present

Background and Basis of Presentation	12 Months Ended
	Dec. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Background and Basis of Presentation	Background and Basis of Presentation Background Neenah, Inc. ("Neenah" or the "Company"), is a Delaware corporation incorporated in April 2004. The Company has two primary operations: its technical products business and its fine paper and packaging business. The technical products business is an international producer of fiber-formed, coated and/or saturated specialized media that delivers high performance benefits to customers. Included in this segment are filtration media, tape and abrasives backings products, digital transfer papers, durable label and other specialty substrate products. The fine paper and packaging business is a supplier of branded premium printing, packaging and other high-end specialty papers primarily in North America. The Company's premium writing, text and cover papers, and specialty papers are used in commercial printing and imaging applications for corporate identity packages, invitations, personal stationery and high-end advertising, as well as premium labels and luxury packaging. Basis of Presentation The consolidated financial statements include the financial statements of the Company and its wholly owned and majority owned subsidiaries. All inter-company balances and transactions have been eliminated in consolidation. Impacts of COVID-19 The Company continues to assess the impacts of the novel coronavirus pandemic and its variants (“COVID-19” or the "pandemic") on its various accounting estimates and significant judgments, including those that require consideration of forecasted financial information in the context of its unknown future impacts, using information that is reasonably available at this time. The accounting estimates and other matters assessed included, but were not limited to, goodwill, indefinite-lived intangibles and other long-lived assets, and valuation allowances for income tax assets. The incremental and direct costs of responding to COVID-19 were $1.6 million and $3.5 million for the years ended December 31, 2021 and 2020, respectively. These included costs of personal protective equipment, additional cleaning and sanitation supplies in 2020, and non-productive labor costs of quarantined workers and COVID-19 medical costs for both periods.

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2021
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Use of Estimates The preparation of financial statements in conformity with accounting principles generally accepted in the United States ("GAAP") requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements and the reported amounts of net sales and expenses during the reporting periods. Actual results could differ from these estimates, and changes in these estimates are recorded when known. Significant management judgment is required in determining the accounting for, among other things, reserves for uncertain tax positions, pension and post-employment benefit obligations, retained insurable risks, reserves for sales discounts and allowances, purchase price allocations, useful lives for depreciation and amortization, asset retirement obligations ("AROs"), future cash flows associated with impairment testing for tangible and intangible long-lived assets, goodwill, valuation allowance for deferred tax assets, contingencies, inventory obsolescence and market reserves and the valuation of stock-based compensation. Revenue Recognition The Company recognizes sales revenue at a point in time following the transfer of control of the product to the customer, which typically occurs upon shipment or delivery depending on the terms of the underlying contractual arrangements. Sales are reported net of allowable discounts and estimated returns. Reserves for cash discounts, trade allowances and sales returns are estimated using historical experience. The Company accounts for shipping and handling activities related to contracts with customers as costs to fulfill the promise to transfer the associated products. Accordingly, the Company records customer payments of shipping and handling costs as a component of net sales and classifies such costs as a component of cost of sales. The Company excludes tax amounts assessed by governmental authorities that are both (i) imposed on and concurrent with a specific revenue-producing transaction and (ii) collected from customers from the measurement of transaction prices. Accordingly, such tax amounts are not included as a component of net sales or cost of sales. The Company considers each transaction/shipment as a separate performance obligation. Neenah recognizes revenue when the title transfers to the customer. As such, the remaining performance obligations at period end are not considered material. Sales terms in the technical products business vary depending on the type of product sold and customer category. In general, sales of the technical products businesses are collected in approximately 45 to 55 days, with extended credit terms for certain international customers. Fine paper and packaging sales terms range between 20 and 30 days with discounts of 0 to 2 percent for early customer payments, with discounts of 1 percent and 20-day terms used most often. Extended credit terms are offered to customers consistent with certain local markets. Refer to Note 14, "Business Segment and Geographic Information," for further disaggregation of revenue. Cash and Cash Equivalents Cash and cash equivalents include all cash balances and highly liquid investments with an initial maturity of three months or less. The Company places its temporary cash investments with high credit quality financial institutions. As of December 31, 2021 and 2020, $0.3 million and $0.3 million, respectively, of the Company's cash and cash equivalents is restricted to the payment of post-employment benefits. Inventories U.S. inventories are valued at the lower of cost, using the last-in, first-out ("LIFO") method for financial reporting purposes, or market. European inventories are valued at the lower of cost, using a weighted-average cost method, or net realizable value. Cost includes labor, materials and production overhead. Foreign Currency Balance sheet accounts of the Company's operations in Germany, Spain and the Netherlands, the United Kingdom (the "U.K."), and Canada are translated from Euros, British Pounds and Canadian dollars, respectively, into U.S. dollars at period-end exchange rates, and income and expense accounts are translated at average exchange rates during the period. Translation gains or losses related to net assets located in these foreign locations are recorded as unrealized foreign currency translation adjustments within accumulated other comprehensive income (loss) ("AOCI") in stockholders' equity. Gains and losses resulting from foreign currency transactions (transactions denominated in a currency other than the entity's functional currency) are included in Other expense (income), net in the consolidated statements of operations. Property and Depreciation Property, plant and equipment are stated at cost, less accumulated depreciation. Certain costs of software developed or obtained for internal use are capitalized. When property, plant and equipment is sold or retired, the costs and the related accumulated depreciation are removed from the accounts, and the gains or losses are recorded in Other expense (income), net. For financial reporting purposes, depreciation is principally computed on the straight-line method over estimated useful asset lives. The weighted average remaining useful lives for buildings, land improvements and machinery and equipment are approximately 17 years, 19 years and 9 years, respectively. The costs of major rebuilds and replacements of plant and equipment are capitalized, and the cost of maintenance performed on manufacturing facilities, composed of labor, materials and other incremental costs, is expensed as incurred. Start-up costs for new or expanded facilities, including costs related to trial production, are expensed as incurred. The Company accounts for AROs in accordance with Accounting Standards Codification ("ASC") Topic 410, Asset Retirements and Environmental Obligations , which requires companies to make estimates regarding future events in order to record a liability for AROs in the period in which a legal obligation is created. Such liabilities are recorded at fair value, with an offsetting increase to the carrying value of the related long-lived asset. As of December 31, 2021, the Company is unable to estimate its AROs for environmental liabilities at its manufacturing facilities, but does not believe the liabilities related to AROs, if any, are material. Stock-Based Compensation The Company accounts for stock-based compensation in accordance with the fair value recognition provisions of ASC Topic 718, Compensation — Stock Compensation ("ASC Topic 718"). The amount of stock-based compensation cost recognized is based on the fair value of grants that are ultimately expected to vest and is recognized pro-rata over the requisite service period for the entire award. Research and Development Expense Research and development costs are charged to expense as incurred and are recorded in "Selling, general and administrative expenses" on the consolidated statements of operations. See Note 15, "Supplemental Data — Supplemental Statement of Operations Data." Fair Value Measurements The Company measures fair value in accordance with ASC Topic 820, Fair Value Measurements and Disclosures ("ASC Topic 820") which establishes a framework for measuring fair value. ASC Topic 820 provides a fair value hierarchy 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). Fair Value of Financial Instruments As of December 31, 2021 and 2020, the carrying values of the Company’s debt approximated fair value.The fair value for all debt instruments was estimated from Level 2 measurements using rates currently available to the Company for debt of the same remaining maturities. The Company's investments in marketable securities are accounted for as "available-for-sale securities" in accordance with ASC Topic 320, Investments — Debt and Equity Securities ("ASC Topic 320"). Pursuant to ASC Topic 320, marketable securities are reported at fair value on the consolidated balance sheets and holding gains and losses are reported in "Other Income (Expense), net" on the Company's consolidated statements of operations. At December 31, 2021, the Company had $0.7 million in marketable securities classified as Other assets on the consolidated balance sheet. The cost of such marketable securities was $0.7 million. Fair value for the Company's marketable securities was estimated from Level 1 inputs. The Company's marketable securities are designated for the payment of benefits under its supplemental employee retirement plan ("SERP"). Fair Value of Pension Plan Assets With the exception of cash and cash equivalents which are considered Level 1, and certain annuity contracts which are considered Level 3, pension plan assets are measured at Net Asset Value ("NAV") (or its equivalent) as an alternative to fair market value due to the absence of readily available market prices, and as such are not subject to the fair value hierarchy. Following is the fair value of each investment category: • Cash and cash equivalents ($2.2 million and $3.8 million at December 31, 2021 and 2020, respectively). • U.S and non-U.S. Equities ($109.8 million and $144.1 million at December 31, 2021 and 2020, respectively) — These proprietary collective funds have observable NAVs (based on the fair value of the underlying investments of the funds) that are provided to investors and provide for liquidity either immediately or within a few days. • U.S and non-U.S. Fixed Income Securities ($196.3 million and $224.8 million at December 31, 2021 and 2020, respectively) — These proprietary collective funds have observable NAVs (based on the fair value of the underlying investments of the funds) that are provided to investors and provide for liquidity either immediately or within a few days. • Hedge Fund/Other ($34.4 million and $31.6 million at December 31, 2021 and 2020, respectively) — This fund is valued using NAVs calculated by the underlying investment managers and allow for quarterly or more frequent redemptions. The following table summarizes the changes in Level 3 defined benefit pension plan assets (Neenah Coldenhove B.V. ("Neenah Coldenhove") insurance contract for which fair value is determined based on actuarial assumptions) measured at fair value on a recurring basis for the year ended December 31, 2021, 2020 and 2019: Return on Plan Assets Fair Value at January 1 Attributable to Assets Held at December 31 Attributable to Assets Sold Net Purchases/ (Settlements) Transfers into/ (out of) Level 3 Foreign currency effects Fair For the year ended December 31, 2019 $ 45.1 7.5 — (0.2) — (0.9) $ 51.5 For the year ended December 31, 2020 $ 51.5 5.0 — (1.5) — 5.1 $ 60.1 For the year ended December 31, 2021 $ 60.1 (1.9) — (1.2) — (4.4) $ 52.6 Accounting Standards Changes In August 2018, the Financial Accounting Standards Board (the "FASB") issued the Accounting Standards Update ("ASU") 2018-14, Compensation—Retirement Benefits—Defined Benefit Plans—General (Topic 715-20): Disclosure Framework—Changes to the Disclosure Requirements For Defined Benefit Plans . The ASU modified the annual disclosure requirements for employers that sponsor defined benefit pension or other postretirement plans. The guidance requires disclosure changes to be presented on a retrospective basis. The Company adopted the guidance as of year-ended December 31, 2020. As this standard relates only to financial disclosures, its adoption did not have an impact on results of operations, financial position or cash flows. In January 2020, the Company adopted ASU 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments, which amends the FASB's guidance on the impairment of financial instruments. The ASU adds to U.S. GAAP an impairment model (known as the "current expected credit loss model" or "CECL") that is based on expected losses rather than incurred losses. The adoption of this standard did not have a material impact on the Company's financial position, results of operations or cash flows. In March 2020, the FASB issued ASU 2020-04, Reference Rate Reform (Topic 848)-Facilitation of the Effects of Reference Rate Reform on Financial Reporting . This ASU addresses accounting implications of the replacement of LIBOR (London Inter-Bank Offered Rate) with SOFR (Secured Overnight Financing Rate) or other alternatives by the end of 2021. The FASB allows immediate relief from application of contract modification accounting triggered by reference rate reform that otherwise would be costly to implement and result in burdensome financial reporting. The Company adopted this ASU in the fourth quarter 2021 by electing the expedients and exceptions offered in the ASU. As of December 31, 2021, no amendments to the ASC had been issued and not adopted by the Company that will have or are reasonably likely to have a material effect on its financial position, results of operations or cash flows.

Earnings per Share ("EPS")

Earnings per Share ("EPS")	12 Months Ended
	Dec. 31, 2021
Earnings Per Share [Abstract]
Earnings per Share ("EPS")	Earnings per Share ("EPS") The Company's restricted stock units ("RSUs") are paid non-forfeitable common stock dividends and thus meet the criteria of participating securities. Accordingly, basic EPS has been calculated using the two-class method, under which earnings are allocated to both common stock and participating securities. Basic EPS has been computed by dividing net income allocated to common stock by the weighted average common shares outstanding. For the computation of basic EPS, weighted average RSUs outstanding are excluded from the calculation of weighted average shares outstanding. ASC Topic 260, Earnings per Share ("ASC Topic 260") requires companies with participating securities to calculate diluted earnings per share using the "two class" method. The "two class" method requires first calculating diluted earnings per share using a denominator that includes the weighted average share equivalents from the assumed conversion of dilutive securities. Diluted earnings per share is then calculated using net income reduced by the amount of distributed and undistributed earnings allocated to participating securities calculated using the "Treasury Stock" method and a denominator that includes the weighted average share equivalents from the assumed conversion of dilutive securities excluding participating securities. Companies are required to report the lower of the diluted earnings per share amounts under the two calculations subject to the anti-dilution provisions of ASC Topic 260. Diluted EPS has been computed by dividing net income allocated to common stock by the weighted average number of common shares used in computing basic EPS, further adjusted to include the dilutive impact of the exercise or conversion of common stock equivalents, such as stock options, stock appreciation rights ("SARs") and target awards of RSUs with performance conditions ("Performance Share Units" or "PSUs"), into shares of common stock as if those securities were exercised or converted. For the years ended December 31, 2021, 2020 and 2019, approximately 324,000 , 332,000 and 231,000 potentially dilutive options, respectively, were excluded from the computation of dilutive common shares because the exercise price of such options exceeded the average market price of the Company's common stock for the respective 12-month periods during which the options were outstanding. In addition, as a result of the loss for the years ended December 31, 2021 and 2020, incremental shares of 15,553 and 20,576, respectively, resulting from the dilutive options and PSUs, were excluded from the diluted earnings per share calculation as the effect would have been anti-dilutive. The following table presents the computation of basic and diluted shares of common stock used in the calculation of EPS (amounts in millions, except share and per share amounts): Earnings (loss) per basic common share Year Ended December 31, 2021 2020 2019 Net income (loss) $ (24.9) $ (15.8) $ 55.4 Amounts attributable to participating securities (0.2) (0.2) (0.3) Net income (loss) available to common stockholders $ (25.1) $ (16.0) $ 55.1 Weighted-average basic shares outstanding 16,821 16,813 16,848 Basic earnings (loss) per share $ (1.49) $ (0.96) $ 3.27 Earnings (loss) per diluted common share Year Ended December 31, 2021 2020 2019 Net income (loss) $ (24.9) $ (15.8) $ 55.4 Amounts attributable to participating securities (0.2) (0.2) (0.3) Net income (loss) available to common stockholders $ (25.1) $ (16.0) $ 55.1 Weighted-average basic shares outstanding 16,821 16,813 16,848 Add: Assumed incremental shares under stock-based compensation plans — — 58 Weighted average diluted shares 16,821 16,813 16,906 Diluted earnings (loss) per share $ (1.49) $ (0.96) $ 3.26

Business Acquisitions

Business Acquisitions	12 Months Ended
	Dec. 31, 2021
Business Combination and Asset Acquisition [Abstract]
Business Acquisitions	Business Acquisition Acquisition of Itasa On April 6, 2021, the Company completed the acquisition (the “Itasa Acquisition”) of all of the outstanding capital stock of Global Release Liners, S.L., a Spanish limited company (“Itasa”), from Magnum Capital and other minority shareholders for approximately $240.2 million in cash, net of cash on hand and debt extinguishment, and including a loss on foreign currency forward contracts. Itasa, through its subsidiaries, is a leading global coater and converter of release liners used in hygiene, tapes, industrial, labels, composites, and various other end markets. The Itasa Acquisition was funded with available cash-on-hand and the net proceeds of the Term Loan B discussed in Note 7, "Debt." The Company incurred $12.8 million of costs related to the Itasa Acquisition, including a realized loss of $5.1 million related to the foreign currency forward contracts negotiated to fund the purchase price in Euros. See Note 1, "Background and Basis of Presentation," for further discussion on these contracts. The Itasa business is now part of the Company's Technical Products segment. The Company accounted for the transaction using the acquisition method in accordance with ASC Topic 805, Business Combinations ("ASC Topic 805"). The preliminary allocation of the purchase price was based on estimates of the fair value of assets acquired and liabilities assumed as of April 6, 2021, and income tax balances remain subject to possible adjustment as additional information is obtained. The Company may further revise the preliminary allocation of the purchase price during the remainder of the measurement period, which will not exceed twelve months from the closing of the Itasa Acquisition, and such revisions may be material. The following table summarizes the preliminary allocation of the purchase price to the estimated fair value of the assets acquired and liabilities assumed as of April 6, 2021. As of April 6, 2021 Assets Acquired Cash and cash equivalents $ 34.0 Accounts receivable 20.7 Inventories 24.6 Prepaid and other current assets 2.1 Property, plant and equipment 19.8 Finance lease right-of-use assets 22.1 Operating lease right-of-use assets 0.1 Non-amortizable intangible assets 4.1 Amortizable intangible assets 100.5 Other assets 0.3 Goodwill 119.6 Total assets acquired 347.9 Liabilities Assumed Accounts payable 22.3 Accrued expenses 6.5 Long-term debt 26.4 Lease liabilities - finance 22.1 Lease liabilities - operating 0.1 Deferred income taxes 27.6 Other noncurrent obligations 0.3 Total liabilities assumed 105.3 Net assets acquired $ 242.6 The Company estimated the preliminary fair value of the assets and liabilities acquired in accordance with ASC Topic 820, Fair Value Measurements and Disclosures ("ASC Topic 820"). The preliminary fair value of amortizable and non-amortizable intangible assets was estimated by applying a royalty rate to projected revenue, net of tax impacts and adjusted for present value considerations. The Company estimated the preliminary fair value of acquired property, plant and equipment using a combination of cost and market approaches. In general, the preliminary fair value of other acquired assets and liabilities was estimated using the cost basis of Itasa. There were no material changes to the preliminary purchase price allocation during the nine months ended December 31, 2021. The excess of the purchase price over the estimated fair value of the tangible net assets and identifiable intangible assets acquired was recorded as goodwill. The factors contributing to the amount of goodwill recognized are based on several strategic and synergistic benefits that are expected to be realized from the Itasa Acquisition. These benefits include entry into profitable new markets for silicone release liners with new capabilities and recognized brands and synergies from combining the business with Neenah's existing infrastructure. None of the goodwill recognized as part of the Itasa Acquisition will be deductible for income tax purposes. All of the acquired goodwill was allocated to the Technical Products segment. For the year ended December 31, 2021, the Company recorded net sales of $106.9 million and operating income of $3.7 million from the acquired business. Such results included $5.4 million of one-time costs including the step-up in inventory to fair value on the date of acquisition for year ended December 31, 2021. The following selected unaudited pro forma consolidated statement of operations data for the year ended December 31, 2021 and 2020, was prepared as though the Itasa Acquisition had occurred as of the beginning of 2020. The information does not reflect events that occurred after April 6, 2021 or any operating efficiencies or inefficiencies that may result from the Itasa Acquisition. The pro forma information below includes $18.2 million of non-recurring costs directly attributable to the Itasa Acquisition. Therefore, the information is not necessarily indicative of results that would have been achieved had the businesses been combined during the period presented or the results that the Company will experience going forward. For the Year Ended December 31, 2021 2020 Net Sales $ 1,061.1 $ 908.1 Operating Income (Loss) 16.8 (24.5) Net Income (Loss) (4.7) (34.5) Earnings (Loss) Per Common Share: Basic $ (0.29) $ (2.07) Diluted $ (0.29) $ (2.07)

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	12 Months Ended
	Dec. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	Goodwill and Other Intangible Assets The Company follows the guidance of ASC Topic 805, Business Combinations ("ASC Topic 805"), in recording goodwill arising from a business combination as the excess of purchase price over the fair value of identifiable assets acquired and liabilities assumed. The Company tests goodwill for impairment at least annually on November 30 in conjunction with preparation of its annual business plan, or more frequently if events or circumstances indicate it might be impaired. The Company tested goodwill for impairment as of November 30, 2021 under ASC Topic 350, Intangibles — Goodwill and Other ("ASC Topic 350"). The Company elected the option under ASC Topic 350 to perform a qualitative assessment of the Company's reporting units to determine whether further impairment testing was necessary. In this qualitative assessment, the Company considered the following items for each of the reporting units: macroeconomic conditions, industry and market conditions, overall financial performance and other entity specific events. In addition, for each of these reporting units, the most recent fair value determination resulted in an amount that exceeded the carrying amount of the reporting units. Based on these assessments, the Company determined that the likelihood that a current fair value determination would be less than the current carrying amount of the reporting units is not more likely than not. There was no impairment in the carrying value of goodwill for the years ended December 31, 2021, 2020 and 2019. The following table presents the carrying value of goodwill by business segment and changes in the carrying value of goodwill. Technical Products Fine Paper and Packaging Gross Accumulated Gross Amount Accumulated Net Net Total Balance at December 31, 2019 $ 123.4 $ (46.5) $ 76.9 $ 6.2 $ — $ 6.2 $ 83.1 Foreign currency translation 8.6 (4.3) 4.3 — — — 4.3 Balance at December 31, 2020 132.0 (50.8) 81.2 6.2 — 6.2 87.4 Business acquisition (See Note 4) 119.6 — 119.6 — — — 119.6 Adjustment (0.8) — (0.8) — — — (0.8) Foreign currency translation (11.4) 3.8 (7.6) — — — (7.6) Balance at December 31, 2021 $ 239.4 $ (47.0) $ 192.4 $ 6.2 $ — $ 6.2 $ 198.6 Intangible Assets As of December 31, 2021, the Company had net identifiable intangible assets of $154.6 million. All such intangible assets were acquired in the acquisitions of Itasa, Crane Technical Materials, FiberMark, Neenah Coldenhove, Neenah Germany, Fox River and the acquisition of the Wausau and Southworth brands. The following table details amounts related to those assets. December 31, 2021 December 31, 2020 Gross Accumulated Gross Accumulated Amortizable intangible assets Customer based intangibles $ 118.0 $ (15.9) $ 39.6 $ (24.0) Trade names and trademarks 3.3 (1.4) 5.2 (3.1) Acquired technology 17.7 (7.5) 17.3 (9.3) Total amortizable intangible assets 139.0 (24.8) 62.1 (36.4) Indefinite life trade names, net of cumulative impairment losses of $1.3 million as of December 31, 2021 40.4 — 36.9 — Total $ 179.4 $ (24.8) $ 99.0 $ (36.4) As of December 31, 2021, $128.8 million and $25.8 million of such intangible assets are reported within the Technical Products and Fine Paper and Packaging segments, respectively. See Note 14, "Business Segment and Geographic Information." Intangible assets with finite useful lives are amortized on a straight-line basis over their respective estimated useful lives to their estimated residual values, and reviewed for impairment in accordance with ASC Topic 360, Property, Plant, and Equipment . Intangible assets consist primarily of customer relationships, trade names and acquired intellectual property. Such intangible assets are amortized using the straight-line method over estimated useful lives of between 7 and 15 years. Certain trade names are estimated to have indefinite useful lives and as such are not amortized. Intangible assets with indefinite lives are reviewed for impairment at least annually. During the second quarter of 2020, the Company recorded an impairment loss for its indefinite-lived intangible assets (brand names) of $0.9 million and $0.4 million in the Fine Paper and Packaging and Technical Products segments, respectively, due to the adverse impacts of the pandemic. See Note 13, "Assets Held For Sale and Impairment and Asset Restructuring Costs." There was no impairment in the carrying value of intangible assets with indefinite lives for the years ended December 31, 2021 and 2019. During 2021, as part of the Itasa Acquisition, intangible assets of $104.6 million were added (See Note 4, "Business Acquisition"). In addition, fully amortized intangible assets of $16.0 million were written off. Aggregate amortization expense of acquired intangible assets for the years ended December 31, 2021, 2020 and 2019 was $8.8 million, $3.7 million and $3.9 million, respectively and was reported in selling, general and administrative expenses on the consolidated statements of operations. Estimated amortization expense for the years ended December 31, 2022, 2023, 2024, 2025 and 2026 is $9.4 million, $9.2 million, $9.2 million, $9.2 million and $9.2 million, respectively.

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The Company accounts for income taxes in accordance with ASC Topic 740, Income Taxes. Income tax expense (benefit) represented (16.2) percent, (15.5) percent and 16.7 percent of income (loss) before income taxes for the years ended December 31, 2021, 2020 and 2019, respectively. The Company's effective income tax rate can be affected by many factors, including but not limited to, changes in the mix of earnings in taxing jurisdictions with differing statutory rates, the impact of research and development tax credits ("R&D Credits"), changes in tax laws and changes in corporate structure as a result of business acquisitions and dispositions. The 2021 and 2020 effective income tax rates were significantly impacted by $83.8 million and $70.5 million, respectively, of unusual costs for asset impairment and restructuring costs, losses from pension and SERP settlements, acquisition-related costs and losses on debt extinguishments, which resulted in pre-tax book losses. As a result of the impacts of COVID-19 and other factors, in 2021 and 2020, the Company evaluated its ability to utilize deferred tax assets, including research and development and other tax credits and net operating losses ("NOLs"), before they expire and recorded an increase to the valuation allowance against state tax credits and NOLs of $2.4 million and $4.7 million, respectively. Also, in 2021, upon the permanent closure of the Appleton facility and termination of an intercompany royalty agreement, the Company wrote-off a deferred tax asset of $2.9 million which was no longer recoverable through future tax deductions. In March 2020, the U.S. government enacted the Coronavirus Aid, Relief and Economic Security Act ("CARES Act"). The CARES Act included various income and payroll tax provisions designed to stimulate the economy and provide relief to businesses. Among its benefits was the ability to enhance the value of NOLs by allowing the carryback of NOLs to tax years in which the U.S. federal statutory income tax rate was 35 percent. In 2020, the Company recorded an estimated income tax benefit of $0.9 million and a corresponding tax receivable for $8.0 million for the tax refund. In 2021, when the federal tax return was filed, an additional income tax benefit of $1.4 million was recorded and the corresponding tax refund receivable was increased to $9.1 million. In 2020, the Company also elected the option to delay payment of $4.4 million of 2020 payroll taxes. One-half was paid on December 31, 2021 and the remainder will be paid on December 31, 2022. Also, in 2020 the Company utilized the payroll tax provisions of the Employee Retention Credit of the CARES Act to partially offset qualified wages and benefits of employees impacted by COVID-19 travel and other restrictions. Similar COVID-19 relief legislation was also enacted in Germany, the Netherlands and the U.K. aimed at providing subsidies for employee retention and deferral of tax payments. The following table presents the principal reasons for the difference between the Company's effective income tax rate and the U.S. federal statutory income tax rate: Year Ended December 31, 2021 2021 2020 2020 2019 2019 U.S. federal statutory income tax rate (21.0) % $ (6.2) (21.0) % $ (3.9) 21.0 % $ 14.0 U.S. state income taxes, net of federal income tax benefit (10.1) % (3.0) (10.2) % (1.9) 1.4 % 0.9 Foreign tax rate differences (a) 9.8 % 2.9 15.0 % 2.8 3.6 % 2.4 Foreign financing structure (b) (4.7) % (1.4) (11.2) % (2.1) (3.0) % (2.0) U.S. tax on foreign earnings (c) 2.4 % 0.7 4.3 % 0.8 0.9 % 0.6 Research and development and other tax credits (11.8) % (3.5) (15.5) % (2.9) (6.2) % (4.1) Benefit of CARES Act NOL carryback (d) (4.7) % (1.4) (4.8) % (0.9) — % — Write-off of deferred tax asset for Appleton IP transfer (e) 9.8 % 2.9 — % — — % — Change in valuation allowances (f) 8.1 % 2.4 25.2 % 4.7 0.2 % 0.1 Change in reserves for uncertain tax positions 1.0 % 0.3 (3.7) % (0.7) (1.9) % (1.3) Change in statutory tax rates (g) 2.0 % 0.6 — % — — % — Excess tax benefits from stock compensation — % — 1.1 % 0.2 (0.2) % (0.1) Other differences, net 3.0 % 0.9 5.3 % 1.0 0.9 % 0.6 Effective income tax rate (16.2) % $ (4.8) (15.5) % $ (2.9) 16.7 % $ 11.1 _______________________ (a) Represents the impact on the Company's effective tax rate due to the mix of earnings among taxing jurisdictions with differing statutory rates. In each year, the U.S. federal tax rate is lower than the tax rate in Germany and the Netherlands, and in 2021 was lower than Spain and Mexico. (b) Represents the impact on the Company's effective tax rate of the Company's financing strategies. (c) Includes federal global intangible low-taxed income ("GILTI") impacts and state taxation of foreign earnings and profits ("E&P"). (d) Represents the net benefit of the CARES Act provision to allow for the carryback of the NOL generated in 2020 to the 2015 and 2016 tax years. The estimated tax benefit recorded in 2020 of $0.9 million included a $5.0 million benefit from the tax rate differential and other factors, offset by a $3.0 million impact from provisions of GILTI and a $1.1 million increase in the reserve for uncertain income tax positions for restored R&D Credits. In 2021 when the 2020 tax return was filed, an additional tax benefit of $1.4 million was recorded which included a $1.0 million reduction to the provisions of GILTI and a $0.5 million reduction in the benefit from the tax rate differential and other factors, offset by a $0.1 million increase in the reserve for uncertain income tax positions for restored R&D Credits. (e) In conjunction with the closure of the Appleton facility (see Note 13), the deferred tax asset associated with the future tax benefits from payments to a German subsidiary was written-off, since the royalty agreement for the transfer of intellectual property was terminated and no future payments will occur. (f) In 2021 and 2020, as a result of the impacts of COVID-19 and other factors, the Company evaluated its ability to utilize certain deferred tax assets, including research and development and other tax credits and NOLs, before they expire. The Company recorded in 2021 and 2020 a $2.4 million and $4.7 million, respectively, increase to the valuation allowance against state tax credits and NOLs, the majority of which related to adjustments to the beginning of year valuation allowance for changes in judgment about the realizability of these deferred tax assets in future years. (g) Represents the increase in the net deferred income tax liability from an increase in the statutory income tax rates in the U.K. and the Netherlands. The following table presents the U.S. and foreign components of income before income taxes: Year Ended December 31, 2021 2020 2019 Income (loss) before income taxes: U.S. $ (71.6) $ (55.6) $ 30.1 Foreign 41.9 36.9 36.4 Total $ (29.7) $ (18.7) $ 66.5 The following table presents the components of the provision (benefit) for income taxes: Year Ended December 31, 2021 2020 2019 Provision (benefit) for income taxes: Current: Federal $ (0.6) $ (8.1) $ 0.3 State (0.1) 0.3 (0.2) Foreign 11.9 9.8 7.6 Total current income tax provision 11.2 2.0 7.7 Deferred: Federal (14.9) (6.5) 3.0 State (0.3) 2.5 0.8 Foreign (0.8) (0.9) (0.4) Total deferred income tax provision (16.0) (4.9) 3.4 Total provision (benefit) for income taxes $ (4.8) $ (2.9) $ 11.1 The Company has elected to treat its Canadian subsidiary as a branch for U.S. income tax purpose. Therefore, its pre-tax loss, arising primarily from employee benefit plan costs, is included in determining U.S. federal and state income taxes. The asset and liability approach is used to recognize deferred income tax assets and liabilities for the expected future tax consequences of temporary differences between the carrying amounts and the tax basis of assets and liabilities. The presentation below reflects net deferred income tax assets of U.S. federal and state jurisdictions and the net deferred income tax liabilities related to operations of Germany, the Netherlands, Spain, Mexico and the U.K. The components of deferred income tax assets and liabilities, net of reserves for uncertain tax positions and valuation allowances, are as follows: December 31, 2021 2020 Deferred income tax assets (liabilities) Research and development tax credits $ 28.3 $ 27.5 Employee benefits 8.9 15.6 Capitalized research and development costs and disallowed interest 7.5 — Lease liabilities 4.1 4.6 Net operating losses and other tax credits 2.7 3.7 Accrued liabilities 2.0 1.4 Inventories (a) (1.3) — Lease right-of-use assets (3.7) (4.3) Intangibles (7.6) (4.7) Property, plant and equipment (a) (16.5) (26.7) Other 0.7 1.2 Net deferred income tax assets $ 25.1 $ 18.3 Deferred income tax assets (liabilities) Intangibles $ (27.1) $ (3.0) Property, plant and equipment (17.9) (16.8) Lease right-of-use assets (5.5) (0.9) Inventories (1.9) (0.8) Net operating losses — 0.2 Accrued liabilities 0.5 — Lease liabilities 5.5 0.9 Employee benefits 8.5 9.5 Other (0.3) (1.4) Net deferred income tax liabilities $ (38.2) $ (12.3) _______________________ (a) As of December 31, 2021, included within property, plant and equipment and inventories was a deferred tax liability resulting from tax accounting method changes of $(1.8) million and $(0.3) million, respectively. As of December 31, 2020, included within property, plant and equipment and inventories was a deferred tax liability resulting from tax accounting method changes of $(3.5) million and $(0.6) million, respectively. As of December 31, 2021, the Company had $30.8 million of U.S. federal and $7.7 million of U.S. state R&D Credits which, if not used, will expire between 2029 and 2041 for the U.S. federal R&D Credits and between 2022 and 2036 for the state R&D Credits. As of December 31, 2021, the Company had $69.9 million of state NOLs which may be used to offset state taxable income. The NOLs are reflected in the consolidated financial statements as a deferred income tax asset of $4.2 million. If not used, substantially all of the NOLs will expire in various amounts between 2022 and 2041. The Company had pre-acquisition and recognized built-in loss carryovers of $5.9 million, reflected as a deferred income tax asset of $1.2 million. As of December 31, 2021 and 2020, the Company had $52.1 million and $66.5 million, respectively, of undistributed earnings (net of foreign taxes) of foreign subsidiaries. Except for immaterial foreign currency exchange considerations, the Company will be able to repatriate these foreign earnings without U.S. federal taxation due to previously taxed income under the GILTI provisions. The Company or one of its subsidiaries files income tax returns in the U.S. federal jurisdiction, various U.S. state jurisdictions and foreign jurisdictions. The Company is no longer subject to U.S. federal examination for years before 2018, to state and local examinations for years before 2017 and to non-U.S. income tax examinations for years before 2015. The following is a tabular reconciliation of the total amounts of uncertain tax positions as of and for the years ended December 31, 2021, 2020 and 2019: Year Ended December 31, 2021 2020 2019 Balance at January 1, $ 8.0 $ 7.8 $ 10.1 Increases in prior period tax positions 0.1 1.1 0.7 Decreases in prior period tax positions — (0.2) (1.2) Increases in current period tax positions 0.5 0.6 0.6 Decreases due to lapse of statutes of limitations (0.4) (1.3) (1.5) Increases from business acquisitions 0.3 — — Decreases due to settlements with tax authorities — — (0.9) Balance at December 31, $ 8.5 $ 8.0 $ 7.8 The $8.5 million of reserves for uncertain tax positions as of December 31, 2021 were reflected on the consolidated balance sheet as follows: $7.9 million netted against deferred income tax assets and $0.6 million in other noncurrent obligations. The $8.0 million of reserves for uncertain tax positions as of December 31, 2020 were reflected on the consolidated balance sheet as follows: $7.7 million netted against deferred income tax assets and $0.3 million in other noncurrent obligations. If recognized, $6.8 million of the benefit for uncertain tax positions at December 31, 2021 would favorably affect the Company's effective tax rate in future periods. The Company files income tax returns and is subject to examination by various taxing jurisdictions. The Company records uncertain tax positions in accordance with ASC 740 on the basis of a two-step process in which (1) it is determined whether it is more likely than not that the tax positions will be sustained on the basis of the technical merits of the position, and (2) for those tax positions that meet the more-likely-than-not recognition threshold, the Company recognizes the largest amount of tax benefit that is more than 50 percent likely to be realized upon ultimate settlement with the related tax authority. The Company does not expect that facts and circumstances such as the expiration of statutes of limitations or the settlement of audits in the next twelve months will result in liabilities for uncertain income tax positions that are materially different than the amounts that were accrued as of December 31, 2021. The Company recognizes accrued interest and penalties related to uncertain income tax positions in the Provision for income taxes on the consolidated statements of operations. As of December 31, 2021 and 2020, the Company had less than $0.1 million and $0.1 million, respectively, accrued for interest and penalties related to uncertain income tax positions. As of December 31, 2021 and 2020, the Company had $5.3 million and $5.3 million of foreign tax credits, all of which the Company believes will expire unutilized. Therefore, as of December 31, 2021 and 2020, the Company recorded a full valuation allowance equal to the amount of this deferred income tax asset. As of December 31, 2021 and 2020, the

Debt

Debt	12 Months Ended
	Dec. 31, 2021
Debt Disclosure [Abstract]
Debt	3.25 50% of Excess Cash Flow The Term Loan Credit Agreement contains covenants and events of default which the Company believes are customary for agreements of this nature. Among other things, such covenants restrict the ability of the Company and its subsidiaries to incur certain debt, incur or create certain liens, make specified restricted payments, authorize or issue capital stock, enter into transactions with their affiliates, consolidate, merge with or acquire another business, sell certain of their assets, or dissolve or wind up. Under the most restrictive terms of the Term Loan Credit Agreement, the Company is permitted to pay cash dividends and repurchase shares of Neenah's common stock in an aggregate amount not to exceed $8,750,000 per fiscal quarter. However, as long as the total leverage ratio calculated in accordance with the Term Loan Credit Agreement does not exceed 3.0 to 1.0, the Company can pay dividends or repurchase shares without limitation. In the event the total leverage ratio exceeds 3.0 to 1.0 but is less than or equal to 4.0 to 1.0, the Company may still pay dividends or repurchase shares of Neenah common stock in an aggregate amount in excess of $8,750,000 per fiscal quarter by utilizing certain "restricted payment baskets" described in the Term Loan Credit Agreement. As of December 31, 2021, the total leverage ratio was 3.7 to 1.0. In addition, Neenah would be permitted to pay cash dividends and repurchase shares of, Neenah common stock in excess of $8,750,000 per fiscal quarter if the aggregate amount of such payments, together with the amount of redemptions or prepayments of certain indebtedness, is less than or equal to the greater of (i) $125 million and (ii) 15% of consolidated tangible assets. As of December 31, 2021, none of these covenants restricted our ability to pay dividends on or repurchase shares of our common stock. Amended and Restated Secured Global Revolving Credit Facility On December 10, 2018, the Company amended and restated its existing credit facility by entering into the Fourth Amended and Restated Credit Agreement (the "Fourth Amended Credit Agreement", and as amended from time to time, the “Revolving Credit Agreement”) by and among the Company and certain of its domestic subsidiaries (the "Domestic Borrowers"), Neenah Services GmbH & Co. KG and certain of its German subsidiaries (the "German Borrowers," and together with the Domestic Borrowers, the "ABL Borrowers")), certain other subsidiaries as the "German Guarantors", the financial institutions signatory to the Fourth Amended Credit Agreement as lenders (the "Lenders"), and JPMorgan Chase Bank, N.A., as agent for the Lenders (the "ABL Administrative Agent"). The Revolving Credit Agreement provides for a $125 million secured revolving credit facility for the Domestic Borrowers (the "U.S. Revolving Credit Facility") and a $50 million secured, multicurrency revolving credit facility for the German Borrowers (the "German Revolving Credit Facility," and together with the U.S. Revolving Credit Facility, the "Global Revolving Credit Facility"). The Global Revolving Credit Facility, which matures on December 10, 2023, contains an accordion feature permitting one or more increases in the Global Revolving Credit Facility in an aggregate principal amount not exceeding $125 million, such that the aggregate commitments under the Global Revolving Credit Facility do not exceed $300 million. In addition, the Domestic Borrowers may request letters of credit under the U.S. Revolving Credit Facility in an aggregate face amount not to exceed $20 million outstanding at any time, and the German Borrowers may request letters of credit under the German Revolving Credit Facility in an aggregate face amount not to exceed $5 million outstanding at any time. On April 6, 2021, in connection with the Itasa Acquisition, the Company amended the Fourth Amended Credit Agreement by entering into a Fourth Amendment to Fourth Amended and Restated Credit Agreement (the "Fourth Amendment"). The Fourth Amendment, among other things, added provisions (a) specifically permitting the consummation of the Itasa Acquisition, (b) permitting the incurrence of the Term Loan B, and (c) permitting certain indebtedness, liens and other transactions to facilitate consummation of the Itasa Acquisition and the financing of working capital for Itasa. On November 16, 2021, the Company further amended the Fourth Amended Credit Agreement by entering into a Fifth Amendment (the “Fifth Amendment”). The Fifth Amendment modified certain provisions of the Fourth Amended Credit Agreement to address the discontinuation of LIBOR published rates for Euro and Sterling denominated borrowings on December 31, 2021 and the planned discontinuation of LIBOR published rates for United States Dollar denominated borrowings after June 30, 2023. The Fifth Amendment provides customary LIBOR replacement language, including, among other things, (i) rules on determination of the replacement reference interest rates upon occurrence of specific events, (ii) the mechanics of how applicable interest rates will be determined in each case, (iii) the applicable fallback reference interest rates in case determination fails or rate ceases to be determinable. For loans not denominated in United States dollars, the Fifth Amendment provided that from the effective date of such amendment, (a) Euro-denominated loans under the Global Revolving Credit Facility would bear interest based on (1) the Euro short-term rate for German swingline borrowings, and (2) the Euro interbank offered rate for loans under the German Revolving Credit Facility other than swingline borrowings, for interest periods of one or three months, and (b) Sterling-denominated loans would bear interest based upon the Sterling overnight index average (“SONIA”). There were no Euro or Sterling-denominated loans outstanding under the Global Revolving Credit Facility as of December 31, 2021. For United States dollar-denominated loans under the Global Revolving Credit Facility, the LIBOR replacement language includes, without limitation, the use of rates based on SOFR as a replacement rate for LIBOR. The consolidated statements of cash flows present borrowings and repayments under the Global Revolving Credit Facility and the predecessor revolving bank credit facility using a gross approach. This approach presents not only discrete borrowings for transactions such as a business acquisition, but also reflects all borrowings and repayments that occur as part of daily management of cash receipts and disbursements. For the years ended December 31, 2021, 2020, and 2019 all of the borrowings related to daily cash management. The right of the Domestic Borrowers to borrow and obtain letters of credit under the U.S. Revolving Credit Facility is subject to, among other things, the borrowing base of the Domestic Borrowers on a consolidated basis (the "Domestic Borrowing Base"). The right of the German Borrowers to borrow and obtain letters of credit under the German Revolving Credit Facility is similarly subject to a borrowing base requirement (the "German Borrowing Base"). The German Borrowing Base is initially determined on a combined basis for all German Borrowers. Under certain circumstances (including the occurrence of an event of default resulting from an act or omission of any German Borrower or German Guarantor), the ABL Administrative Agent may require the German Borrowing Base to be determined separately for each of the German Borrowers. At its option the Company may, from time to time, allocate a portion of the Domestic Borrowing Base to the German Borrowing Base (resulting in a corresponding reduction of the Domestic Borrowing Base); however, the principal amount of borrowings and the outstanding letter of credit exposure under the German Revolving Credit Facility may not at any time exceed the German Revolving Credit Facility commitment amount then in effect. The guarantees of the German Guarantors are limited solely to the German Revolving Credit Facility obligations. Under the terms of the Revolving Credit Agreement and related loan documentation, neither the German Borrowers nor the German Guarantors (collectively, the "German Loan Parties") will be liable for any obligations relating to the U.S. Revolving Credit Facility. The Global Revolving Credit Facility is secured by liens on all or substantially all of the assets of the Domestic Borrowers, including (i) a first-priority security interest in substantially all of their ABL Priority Collateral, and (ii) a second-priority security interest in their TLB Priority Collateral. The German Revolving Credit Facility is secured by liens on all or substantially all of the assets of the German Borrowers and certain assets of the German Guarantors. Any liens granted by the German Loan Parties secure only the German Revolving Credit Facility obligations. Terms, Covenants and Events of Default. In general, borrowings under the Global Revolving Credit Facility will bear interest at the published benchmark rate for the denominated currency of the applicable borrowing (the "Benchmark Rate") (which cannot be less than zero) plus an applicable margin ranging from 1.25% to 1.75%, depending on the amount of availability under the Global Revolving Credit Agreement. The Benchmark Rate for United States dollar-denominated borrowings is currently reserve-adjusted LIBOR for the relevant interest period. In addition, the Company may elect an alternate borrowing rate ("ABR") for United States dollar-denominated borrowings under the Global Revolving Credit Facility. ABR borrowings under the Global Revolving Credit Facility will bear interest at the highest interest rate shown in the following table: Applicable Margin (a) U.S. Revolving German Revolving Prime rate 0% to 0.25% Not applicable Federal funds rate +0.50% 0% to 0.25% Not applicable Monthly Benchmark Rate (which cannot be less than zero) +1.00% 0% to 0.25% Not applicable Overnight Benchmark (which cannot be less than zero) Not applicable 1.25%-1.75% _______________________ (a) The applicable margin within the ranges above depends on the amount of availability under the Global Revolving Credit Agreement. The Company is also required to pay a monthly commitment fee on the unused amounts available under the Global Revolving Credit Facility at a per annum rate of 0.25%. If specified excess availability (i.e., aggregate availability, plus any excess of the aggregate borrowing base over the aggregate commitments under the Global Revolving Credit Facility as then in effect, subject to certain limitations) under the Global Revolving Credit Facility is less than the applicable threshold set forth in the Revolving Credit Agreement, the Company is required to comply with a fixed charge coverage ratio (as defined in the Revolving Credit Agreement), which is tested quarterly. As of December 31, 2021, specified excess availability under the Global Revolving Credit Facility exceeded the minimum required amount, and the Company was not required to comply with such fixed charge coverage ratio. The Revolving Credit Agreement contains representations and warranties, affirmative, reporting and negative covenants, events of default and other terms which the Company believes are ordinary and standard for agreements of this nature, with which the Company and its subsidiaries must comply during the term of the agreement. Among other things, such covenants restrict the ability of the Company and its subsidiaries to incur certain debt, incur or create certain liens, make specified restricted payments, authorize or issue capital stock, enter into transactions with their affiliates, consolidate, merge with or acquire another business, sell certain of their assets, or dissolve or wind-up. Under the terms of the Revolving Credit Agreement, we are permitted to pay cash dividends on, and repurchase shares of, Neenah common stock without limitation, as long as the specified excess availability exceeds the applicable threshold provided under the Revolving Credit Agreement. If the specified excess availability is less than the applicable threshold, the Company is subject to certain restrictions on the amount of cash dividends we are permitted to declare and the amount of share repurchases Neenah is permitted to execute . As of December 31, 2021, the Company's availability exceeded the applicable threshold, so this restriction did not apply. Availability under the Global Revolving Credit Facility varies over time depending on the value of the inventory and receivables of the respective ABL Borrowers and also (in the case of the German Revolving Credit Facility) various capital assets of the German Borrowers. As of December 31, 2021, the Company had $0.9 million in borrowings and $0.3 million in letters of credit outstanding under the Global Revolving Credit Facility and $146.1 million of available credit (based on exchanges rates at December 31, 2021). As of December 31, 2021 and 2020, the weighted-average interest rate on outstanding borrowings under the Global Revolving Credit Facility was 1.3% per annum. Other Debt In January 2013, Neenah Germany entered into a project financing agreement for the construction of a melt blown machine (the "Second German Loan Agreement"). The Second German Loan Agreement provided €9.0 million of construction financing which is secured by the melt blown machine. The loan matures in September 2022 and principal is repaid in equal quarterly installments. The interest rate on amounts outstanding is 2.45% and is payable quarterly. At December 31, 2021, €0.9 million ($1.0 million, based on exchange rates at December 31, 2021) was outstanding under the Second German Loan Agreement. In May 2018, Neenah Germany entered into a project financing agreement for the construction of a regenerative thermal oxidizer ("RTO") (the "Third German Loan Agreement"). The purposes of the project were to increase the capacity of the existing saturators and ensure compliance with new European air emission standards. The Third German Loan Agreement provided €5.0 million of financing and is secured by the asset. The loan matures in September 2022 and principal is repaid in equal quarterly installments. The interest rate on amounts outstanding is 1.45% and is payable quarterly. At December 31, 2021, €0.8 million ($0.9 million, based on exchange rates at December 31, 2021) was outstanding under the Third German Loan Agreement. Principal Payments The following table presents the Company's required debt payments: 2022 2023 2024 2025 2026 Thereafter Total Debt payments $ 6.4 $ 5.4 $ 4.5 $ 4.5 $ 4.5 $ 425.3 $ 450.6 " id="sjs-B4" xml:space="preserve">Debt Long-term debt consisted of the following: December 31, 2021 2020 Term Loan B Credit Facility (variable rates) due April 2028 $ 447.8 $ — Term Loan B Credit Facility (variable rates) extinguished April 2021 — 199.0 Global Revolving Credit Facility (variable rates) due December 2023 0.9 — Second German Loan Agreement (2.45% fixed rate) due in quarterly installments ending September 2022 1.0 2.4 Third German Loan Agreement (1.45% fixed rate) due in quarterly installments ending September 2022 0.9 2.6 Deferred financing costs (9.3) (9.6) Total Debt 441.3 194.4 Less: Debt payable within one year 6.4 4.9 Long-term debt $ 434.9 $ 189.5 Term Loan B Credit Facility On June 30, 2020, the Company entered into a Term Loan Credit Agreement (the “2020 Term Loan Credit Agreement”) by and among the Company, as borrower, certain of its domestic subsidiaries, as guarantors (the “Guarantors”, and together with the Company, the “2020 Term Loan Parties”), a syndicate of banks, financial institutions and other entities as lenders, and JPMorgan Chase Bank, N.A., as administrative agent for the lender group. The 2020 Term Loan Credit Agreement provided a seven-year Term Loan B credit facility (the "2020 Term B Facility") in the initial principal amount of $200 million (the "2020 Term Loan B"). Proceeds of the 2020 Term Loan B were used to redeem in full the Company’s 5.25% Senior Notes due 2021, repay borrowings under the Company’s senior secured revolving credit facility, pay fees and expenses of the transaction and for general corporate purposes. On April 6, 2021, in connection with the Itasa Acquisition, the Company entered into an Amendment and Restatement Agreement (the "Term Loan Credit Agreement") which provides a seven-year term loan B facility (the "Term B Facility") in the initial principal amount of $450 million (the "Term Loan B"), which replaced the 2020 Term Loan B. The Term Loan B is repayable in equal quarterly installments, commencing on September 30, 2021, in an aggregate annual amount equal to 1% of the original principal amount of Term Loan B (subject to certain reductions in connection with debt repayments and debt buybacks). The entire unpaid principal balance of the Term Loan B will be due and payable at maturity on April 6, 2028. Cash proceeds of borrowings on the closing date under the Term Loan B were used by the Company to pay cash consideration for the Itasa Acquisition, including the repayment of certain existing debt of Itasa, and to pay fees and expenses in connection with the Itasa Acquisition, the Term Loan B and the contemporaneous amendment of the Global Revolving Credit Facility to permit the Itasa Acquisition. The Company recognized a $7.2 million loss on debt extinguishment in connection with the transaction. Under the terms of the Term Loan Credit Agreement, and subject to certain conditions and adjustments, the Company may from time to time solicit the Term Loan B Lenders or new lenders to provide incremental term loan financings under the Term B Facility up to $150 million in the aggregate. The obligations under the Term Loan Credit Agreement are jointly and severally guaranteed by the Company, as borrower, and certain of its domestic subsidiaries, as guarantors (the "Guarantors", and together with the Company, the "Term Loan Parties") and are secured by all or substantially all of the assets of the Term Loan Parties, including (i) a first-priority security interest in substantially all of the tangible and intangible non-current assets of the Term Loan Parties (collectively, the “TLB Priority Collateral”), and (ii) a second-priority security interest in substantially all of the current assets of the Term Loan Parties comprising priority collateral of the lenders under the Global Revolving Credit Facility described below (the “ABL Priority Collateral”). Under the terms of the Term Loan Credit Agreement, borrowings under the Term B Facility will bear interest, as selected by the Company, at a per annum rate equal to either (a) the reserve-adjusted LIBOR rate for interest periods of one or three months, plus an applicable rate of 3.0% per annum, or (b) the Alternate Base Rate (as defined in the Term B Credit Agreement), plus an applicable rate of 2.0% per annum. The Alternate Base Rate is subject to a “floor” of 1.5%, and the adjusted LIBOR rate is subject to a “floor” of 0.5%. As of December 31, 2021, the weighted-average interest rate on outstanding Term Loan borrowings was 3.5% per annum. The Term Loan Credit Agreement includes customary LIBOR replacement language, including, but not limited to, the use of rates based on the secured overnight financing rate (“SOFR”) recommended by the Alternative Reference Rates Committee, a steering committee comprised of U.S. financial market participants, as a replacement rate for LIBOR. SOFR is a broad measure of the cost of borrowing cash in the overnight U.S. Treasury repo market, and is administered by the Federal Reserve Bank of New York. In addition to mandatory prepayments with net cash proceeds of certain debt issuances and certain asset dispositions, the Company is required to make mandatory prepayments of the Term Loan B from excess cash flow (as defined in the Term B Credit Agreement), commencing with the fiscal year ending December 31, 2021, based on certain secured leverage ratio levels, among other requirements, as per below: Secured leverage ratio levels Mandatory prepayments < 2.75 No prepayments required 2.75 - 3.25 25% of Excess Cash Flow > 3.25 50% of Excess Cash Flow The Term Loan Credit Agreement contains covenants and events of default which the Company believes are customary for agreements of this nature. Among other things, such covenants restrict the ability of the Company and its subsidiaries to incur certain debt, incur or create certain liens, make specified restricted payments, authorize or issue capital stock, enter into transactions with their affiliates, consolidate, merge with or acquire another business, sell certain of their assets, or dissolve or wind up. Under the most restrictive terms of the Term Loan Credit Agreement, the Company is permitted to pay cash dividends and repurchase shares of Neenah's common stock in an aggregate amount not to exceed $8,750,000 per fiscal quarter. However, as long as the total leverage ratio calculated in accordance with the Term Loan Credit Agreement does not exceed 3.0 to 1.0, the Company can pay dividends or repurchase shares without limitation. In the event the total leverage ratio exceeds 3.0 to 1.0 but is less than or equal to 4.0 to 1.0, the Company may still pay dividends or repurchase shares of Neenah common stock in an aggregate amount in excess of $8,750,000 per fiscal quarter by utilizing certain "restricted payment baskets" described in the Term Loan Credit Agreement. As of December 31, 2021, the total leverage ratio was 3.7 to 1.0. In addition, Neenah would be permitted to pay cash dividends and repurchase shares of, Neenah common stock in excess of $8,750,000 per fiscal quarter if the aggregate amount of such payments, together with the amount of redemptions or prepayments of certain indebtedness, is less than or equal to the greater of (i) $125 million and (ii) 15% of consolidated tangible assets. As of December 31, 2021, none of these covenants restricted our ability to pay dividends on or repurchase shares of our common stock. Amended and Restated Secured Global Revolving Credit Facility On December 10, 2018, the Company amended and restated its existing credit facility by entering into the Fourth Amended and Restated Credit Agreement (the "Fourth Amended Credit Agreement", and as amended from time to time, the “Revolving Credit Agreement”) by and among the Company and certain of its domestic subsidiaries (the "Domestic Borrowers"), Neenah Services GmbH & Co. KG and certain of its German subsidiaries (the "German Borrowers," and together with the Domestic Borrowers, the "ABL Borrowers")), certain other subsidiaries as the "German Guarantors", the financial institutions signatory to the Fourth Amended Credit Agreement as lenders (the "Lenders"), and JPMorgan Chase Bank, N.A., as agent for the Lenders (the "ABL Administrative Agent"). The Revolving Credit Agreement provides for a $125 million secured revolving credit facility for the Domestic Borrowers (the "U.S. Revolving Credit Facility") and a $50 million secured, multicurrency revolving credit facility for the German Borrowers (the "German Revolving Credit Facility," and together with the U.S. Revolving Credit Facility, the "Global Revolving Credit Facility"). The Global Revolving Credit Facility, which matures on December 10, 2023, contains an accordion feature permitting one or more increases in the Global Revolving Credit Facility in an aggregate principal amount not exceeding $125 million, such that the aggregate commitments under the Global Revolving Credit Facility do not exceed $300 million. In addition, the Domestic Borrowers may request letters of credit under the U.S. Revolving Credit Facility in an aggregate face amount not to exceed $20 million outstanding at any time, and the German Borrowers may request letters of credit under the German Revolving Credit Facility in an aggregate face amount not to exceed $5 million outstanding at any time. On April 6, 2021, in connection with the Itasa Acquisition, the Company amended the Fourth Amended Credit Agreement by entering into a Fourth Amendment to Fourth Amended and Restated Credit Agreement (the "Fourth Amendment"). The Fourth Amendment, among other things, added provisions (a) specifically permitting the consummation of the Itasa Acquisition, (b) permitting the incurrence of the Term Loan B, and (c) permitting certain indebtedness, liens and other transactions to facilitate consummation of the Itasa Acquisition and the financing of working capital for Itasa. On November 16, 2021, the Company further amended the Fourth Amended Credit Agreement by entering into a Fifth Amendment (the “Fifth Amendment”). The Fifth Amendment modified certain provisions of the Fourth Amended Credit Agreement to address the discontinuation of LIBOR published rates for Euro and Sterling denominated borrowings on December 31, 2021 and the planned discontinuation of LIBOR published rates for United States Dollar denominated borrowings after June 30, 2023. The Fifth Amendment provides customary LIBOR replacement language, including, among other things, (i) rules on determination of the replacement reference interest rates upon occurrence of specific events, (ii) the mechanics of how applicable interest rates will be determined in each case, (iii) the applicable fallback reference interest rates in case determination fails or rate ceases to be determinable. For loans not denominated in United States dollars, the Fifth Amendment provided that from the effective date of such amendment, (a) Euro-denominated loans under the Global Revolving Credit Facility would bear interest based on (1) the Euro short-term rate for German swingline borrowings, and (2) the Euro interbank offered rate for loans under the German Revolving Credit Facility other than swingline borrowings, for interest periods of one or three months, and (b) Sterling-denominated loans would bear interest based upon the Sterling overnight index average (“SONIA”). There were no Euro or Sterling-denominated loans outstanding under the Global Revolving Credit Facility as of December 31, 2021. For United States dollar-denominated loans under the Global Revolving Credit Facility, the LIBOR replacement language includes, without limitation, the use of rates based on SOFR as a replacement rate for LIBOR. The consolidated statements of cash flows present borrowings and repayments under the Global Revolving Credit Facility and the predecessor revolving bank credit facility using a gross approach. This approach presents not only discrete borrowings for transactions such as a business acquisition, but also reflects all borrowings and repayments that occur as part of daily management of cash receipts and disbursements. For the years ended December 31, 2021, 2020, and 2019 all of the borrowings related to daily cash management. The right of the Domestic Borrowers to borrow and obtain letters of credit under the U.S. Revolving Credit Facility is subject to, among other things, the borrowing base of the Domestic Borrowers on a consolidated basis (the "Domestic Borrowing Base"). The right of the German Borrowers to borrow and obtain letters of credit under the German Revolving Credit Facility is similarly subject to a borrowing base requirement (the "German Borrowing Base"). The German Borrowing Base is initially determined on a combined basis for all German Borrowers. Under certain circumstances (including the occurrence of an event of default resulting from an act or omission of any German Borrower or German Guarantor), the ABL Administrative Agent may require the German Borrowing Base to be determined separately for each of the German Borrowers. At its option the Company may, from time to time, allocate a portion of the Domestic Borrowing Base to the German Borrowing Base (resulting in a corresponding reduction of the Domestic Borrowing Base); however, the principal amount of borrowings and the outstanding letter of credit exposure under the German Revolving Credit Facility may not at any time exceed the German Revolving Credit Facility commitment amount then in effect. The guarantees of the German Guarantors are limited solely to the German Revolving Credit Facility obligations. Under the terms of the Revolving Credit Agreement and related loan documentation, neither the German Borrowers nor the German Guarantors (collectively, the "German Loan Parties") will be liable for any obligations relating to the U.S. Revolving Credit Facility. The Global Revolving Credit Facility is secured by liens on all or substantially all of the assets of the Domestic Borrowers, including (i) a first-priority security interest in substantially all of their ABL Priority Collateral, and (ii) a second-priority security interest in their TLB Priority Collateral. The German Revolving Credit Facility is secured by liens on all or substantially all of the assets of the German Borrowers and certain assets of the German Guarantors. Any liens granted by the German Loan Parties secure only the German Revolving Credit Facility obligations. Terms, Covenants and Events of Default. In general, borrowings under the Global Revolving Credit Facility will bear interest at the published benchmark rate for the denominated currency of the applicable borrowing (the "Benchmark Rate") (which cannot be less than zero) plus an applicable margin ranging from 1.25% to 1.75%, depending on the amount of availability under the Global Revolving Credit Agreement. The Benchmark Rate for United States dollar-denominated borrowings is currently reserve-adjusted LIBOR for the relevant interest period. In addition, the Company may elect an alternate borrowing rate ("ABR") for United States dollar-denominated borrowings under the Global Revolving Credit Facility. ABR borrowings under the Global Revolving Credit Facility will bear interest at the highest interest rate shown in the following table: Applicable Margin (a) U.S. Revolving German Revolving Prime rate 0% to 0.25% Not applicable Federal funds rate +0.50% 0% to 0.25% Not applicable Monthly Benchmark Rate (which cannot be less than zero) +1.00% 0% to 0.25% Not applicable Overnight Benchmark (which cannot be less than zero) Not applicable 1.25%-1.75% _______________________ (a) The applicable margin within the ranges above depends on the amount of availability under the Global Revolving Credit Agreement. The Company is also required to pay a monthly commitment fee on the unused amounts available under the Global Revolving Credit Facility at a per annum rate of 0.25%. If specified excess availability (i.e., aggregate availability, plus any excess of the aggregate borrowing base over the aggregate commitments under the Global Revolving Credit Facility as then in effect, subject to certain limitations) under the Global Revolving Credit Facility is less than the applicable threshold set forth in the Revolving Credit Agreement, the Company is required to comply with a fixed charge coverage ratio (as defined in the Revolving Credit Agreement), which is tested quarterly. As of December 31, 2021, specified excess availability under the Global Revolving Credit Facility exceeded the minimum required amount, and the Company was not required to comply with such fixed charge coverage ratio. The Revolving Credit Agreement contains representations and warranties, affirmative, reporting and negative covenants, events of default and other terms which the Company believes are ordinary and standard for agreements of this nature, with which the Company and its subsidiaries must comply during the term of the agreement. Among other things, such covenants restrict the ability of the Company and its subsidiaries to incur certain debt, incur or create certain liens, make specified restricted payments, authorize or issue capital stock, enter into transactions with their affiliates, consolidate, merge with or acquire another business, sell certain of their assets, or dissolve or wind-up. Under the terms of the Revolving Credit Agreement, we are permitted to pay cash dividends on, and repurchase shares of, Neenah common stock without limitation, as long as the specified excess availability exceeds the applicable threshold provided under the Revolving Credit Agreement. If the specified excess availability is less than the applicable threshold, the Company is subject to certain restrictions on the amount of cash dividends we are permitted to declare and the amount of share repurchases Neenah is permitted to execute . As of December 31, 2021, the Company's availability exceeded the applicable threshold, so this restriction did not apply. Availability under the Global Revolving Credit Facility varies over time depending on the value of the inventory and receivables of the respective ABL Borrowers and also (in the case of the German Revolving Credit Facility) various capital assets of the German Borrowers. As of December 31, 2021, the Company had $0.9 million in borrowings and $0.3 million in letters of credit outstanding under the Global Revolving Credit Facility and $146.1 million of available credit (based on exchanges rates at December 31, 2021). As of December 31, 2021 and 2020, the weighted-average interest rate on outstanding borrowings under the Global Revolving Credit Facility was 1.3% per annum. Other Debt In January 2013, Neenah Germany entered into a project financing agreement for the construction of a melt blown machine (the "Second German Loan Agreement"). The Second German Loan Agreement provided €9.0 million of construction financing which is secured by the melt blown machine. The loan matures in September 2022 and principal is repaid in equal quarterly installments. The interest rate on amounts outstanding is 2.45% and is payable quarterly. At December 31, 2021, €0.9 million ($1.0 million, based on exchange rates at December 31, 2021) was outstanding under the Second German Loan Agreement. In May 2018, Neenah Germany entered into a project financing agreement for the construction of a regenerative thermal oxidizer ("RTO") (the "Third German Loan Agreement"). The purposes of the project were to increase the capacity of the existing saturators and ensure compliance with new European air emission standards. The Third German Loan Agreement provided €5.0 million of financing and is secured by the asset. The loan matures in September 2022 and principal is repaid in equal quarterly installments. The interest rate on amounts outstanding is 1.45% and is payable quarterly. At December 31, 2021, €0.8 million ($0.9 million, based on exchange rates at December 31, 2021) was outstanding under the Third German Loan Agreement. Principal Payments The following table presents the Company's required debt payments: 2022 2023 2024 2025 2026 Thereafter Total Debt payments $ 6.4 $ 5.4 $ 4.5 $ 4.5 $ 4.5 $ 425.3 $ 450.6

Pension and Other Post-employme

Pension and Other Post-employment Benefits	12 Months Ended
	Dec. 31, 2021
Retirement Benefits [Abstract]
Pension and Other Post-employment Benefits	Pension and Other Post-employment Benefits Pension Plans Substantially all active employees of the Company's U.S. operations participate in defined benefit pension plans and/or defined contribution retirement plans. The Company also has defined benefit plans and/or alternative retirement plans for substantially all its employees in Germany, the U.K., and the Netherlands. In addition, the Company maintains a SERP which is a non-qualified defined benefit plan. The Company provides benefits under the SERP to the extent necessary to fulfill the intent of its defined benefit retirement plans without regard to the limitations set by the Internal Revenue Code on qualified defined benefit plans. The Company's policy is to recognize settlement losses for deferred vested pension benefit payments regardless of whether the amount exceeded the sum of expected service cost and interest costs of the pension plan for the respective calendar year. During 2021, 2020, 2019, the Company recorded $17.1 million, $0.3 million and $0.1 million of settlement losses related to total pension trust fund payments of $68.8 million, $1.2 million, $0.5 million, respectively. In addition, a curtailment loss of $0.3 million was realized in 2021 in conjunction with permanent closure of the Appleton facility and a curtailment gain of $1.6 million was recorded in 2019, as discussed below. During November 2021, to reduce pension risk of a U.S. pension plan, the Company liquidated trust assets to acquire a $64 million group insurance annuity for 1,400 retirees with relatively small monthly pension benefits. Recognition of a pro-rata share of the cumulative actuarial losses was triggered by this transaction, resulting in a $15.6 million settlement loss. Historically, the Company contributed to the PACE Industry Union-Management Pension Fund (the “PIUMPF"), a multiemployer pension plan. Effective July 1, 2018, the Company and representatives of the United Steelworkers Union (the "USW") of the Lowville mill withdrew from the PIUMPF. In October 2019, the Company received a billing from PIUMPF of a withdrawal liability, which the Company challenged, but began making monthly payments totaling $0.1 million per year over 20 years. In December 2020, the Company reached a settlement with PIUMPF and paid $1.2 million related to the accumulated funding deficiency and recognized a settlement loss of such amount. In 2018 and 2019, the Company separately reached agreements with its hourly employee unions in the Netherlands and select U.S. locations that closed new participation to its defined benefit plans. All new hourly employees at these locations will participate in new defined contribution plans. At the time of the agreements, current hourly employees (with the exception of select long-tenured hourly U.S. employees) had their benefit frozen at the current levels under the defined benefit plan and began participation in the new defined contribution plans. In 2019, the Company recognized a curtailment gain of $1.6 million due to these changes in the Netherlands. The Company's funding policy for its U.S. qualified defined benefit plans and its U.K. defined benefit plan is to contribute assets in compliance with regulatory requirements to fund the projected benefit obligation. There is no legal or governmental obligation to fund Neenah Germany's benefit plans and as such the Neenah Germany defined benefit plans are currently unfunded. The Neenah Coldenhove retirement benefit obligations are administered by a third-party insurance company, and funding for these benefits comes from premiums paid. Nonqualified plans providing pension benefits in excess of limitations imposed by taxing authorities are not funded. During the year ended December 31, 2021 and 2020, the Company's funded status of its pension benefits improved $27.7 million and $8.8 million, respectively, from the prior year, due primarily to higher than expected investment returns and an increase in discount rates. The Company uses the fair value of pension plan assets to determine pension expense, rather than averaging gains and losses over a period of years. Investment gains or losses represent the difference between the expected return calculated using the fair value of the assets and the actual return based on the fair value of assets. The Company's pension obligations are measured annually as of December 31. Other Post-employment Benefit Plans The Company maintains post-employment health care and life insurance benefit plans for certain active employees of the Company and former employees of the Canadian pulp operations. These plans are not funded, however as of December 31, 2021, Neenah Germany had investments of $2.5 million that were restricted for the payment of certain post-employment benefits, with $0.7 million and $1.8 million of such investments classified as Prepaid and other current assets and Other assets, respectively, on the consolidated balance sheet. The Canadian plans are generally noncontributory for employees who were eligible to retire on or before December 31, 1992 and contributory for most employees who became eligible to retire on or after January 1, 1993. The Company does not provide a subsidized benefit to non-union U.S. employees hired after 2003 or collectively bargained employees after 2005. The Company's obligations for post-employment benefits other than pensions are measured annually as of December 31. The following table reconciles the benefit obligations, plan assets, funded status and net liability information of the Company's pension and other post-employment benefit plans: Pension Benefits Post-employment Year Ended December 31, 2021 2020 2021 2020 Change in Benefit Obligation: Benefit obligation at beginning of year $ 531.5 $ 482.4 $ 39.8 $ 39.7 Service cost 3.9 4.6 1.0 1.0 Interest cost 12.5 14.1 0.6 1.0 Currency (8.1) 9.7 (0.2) 0.3 Actuarial (gain) loss (12.4) 44.6 — 2.5 Benefit payments from plans (23.6) (22.3) (5.7) (4.7) Plan curtailment (0.3) — (0.8) — Settlement payments (68.8) (1.6) — — Other — — — — Benefit obligation at end of year $ 434.7 $ 531.5 $ 34.7 $ 39.8 Change in Plan Assets: Fair value of plan assets at beginning of year $ 464.4 $ 424.1 $ — $ — Actual gain (loss) on plan assets 22.0 51.9 — — Employer contributions 5.8 6.8 5.7 — Currency (4.5) 5.5 — — Benefit payments (23.6) (22.3) (5.7) — Settlement payments (68.8) (1.6) — — Other — — — — Fair value of plan assets at end of year $ 395.3 $ 464.4 $ — $ — Reconciliation of Funded Status Fair value of plan assets $ 395.3 $ 464.4 $ — $ — Projected benefit obligation 434.7 531.5 34.7 39.8 Net liability recognized in statement of financial position $ (39.4) $ (67.1) $ (34.7) $ (39.8) Amounts Recognized in the Consolidated Balance Sheets Consist of Noncurrent assets $ 9.5 $ — $ — $ — Current liabilities (1.5) (5.1) (5.5) (6.0) Noncurrent liabilities (47.4) (62.0) (29.2) (33.8) Net amount recognized $ (39.4) $ (67.1) $ (34.7) $ (39.8) Amounts recognized in accumulated other comprehensive income (loss) consist of: Pension Post-employment December 31, 2021 2020 2021 2020 Accumulated actuarial loss $ 89.2 $ 126.8 $ 6.6 $ 8.8 Prior service cost 0.1 0.6 — — Total recognized in AOCI $ 89.3 $ 127.4 $ 6.6 $ 8.8 Summary disaggregated information about the pension plans on an accumulated benefit obligation ("ABO") basis follows: December 31, Assets Exceed ABO Exceeds Total 2021 2020 2021 2020 2021 2020 Projected benefit obligation $ 323.4 $ — $ 111.3 $ 531.5 $ 434.7 $ 531.5 Accumulated benefit obligation 318.9 — 111.3 527.9 430.2 527.9 Fair value of plan assets 331.0 — 64.3 464.4 395.3 464.4 Summary disaggregated information about the pension plans on a projected benefit obligation ("PBO") basis follows: December 31, Assets Exceed PBO Exceeds Total 2021 2020 2021 2020 2021 2020 Projected benefit obligation $ 229.2 $ — $ 205.5 $ 531.5 $ 434.7 $ 531.5 Fair value of plan assets 238.7 — 156.6 464.4 395.3 464.4 Summary disaggregated information about post-employment benefits other than pensions follows: December 31, Assets Exceed PBO Exceeds Total 2021 2020 2021 2020 2021 2020 Projected benefit obligation $ — $ — $ 34.7 $ 39.8 $ 34.7 $ 39.8 Fair value of plan assets — — — — — — Components of Net Periodic Benefit Cost Pension Benefits Post-employment Benefits Year Ended December 31, 2021 2020 2019 2021 2020 2019 Service cost $ 3.9 $ 4.6 $ 5.0 $ 1.0 $ 1.0 $ 1.2 Interest cost 12.5 14.1 16.2 0.6 1.0 1.5 Expected return on plan assets (a) (19.8) (20.7) (21.1) — — — Recognized net actuarial loss 4.5 5.4 4.9 1.4 0.9 0.9 Amortization of prior service cost (credit) 0.2 0.3 0.2 — — — Curtailment loss (gain) 0.3 — (1.6) — — — Settlement loss 17.1 0.3 0.1 — — — Net periodic benefit cost $ 18.7 $ 4.0 $ 3.7 $ 3.0 $ 2.9 $ 3.6 _______________________ (a) The expected return on plan assets, excluding the Neenah Coldenhove plan assets, is determined by multiplying the fair value of plan assets at the prior year-end (adjusted for estimated current year cash benefit payments and contributions) by the expected long-term rate of return. The Neenah Coldenhove pension plan is funded through an insurance contract, and the expected return on plan assets is calculated based on the discount rate of the insured obligations. Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income (Loss) Pension Benefits Post-employment Benefits Year Ended December 31, 2021 2020 2019 2021 2020 2019 Net periodic benefit expense $ 18.7 $ 4.0 $ 3.7 $ 3.0 $ 2.9 $ 3.6 Accumulated actuarial gain (loss) (37.6) 9.0 7.7 (2.2) 1.6 (1.5) Prior service cost (credit) (0.5) (0.3) 0.2 — — — Total recognized in other comprehensive income (loss) (38.1) 8.7 7.9 (2.2) 1.6 (1.5) Total recognized in net periodic benefit cost and other comprehensive income (loss) $ (19.4) $ 12.7 $ 11.6 $ 0.8 $ 4.5 $ 2.1 Weighted-Average Assumptions Used to Determine Benefit Obligations at December 31 Pension Post-employment 2021 2020 2021 2020 Discount rate 2.58 % 2.28 % 2.25 % 1.67 % Rate of compensation increase 1.47 % 1.54 % — % — % Initial healthcare cost trend rate — % — % 5.20 % 5.25 % Ultimate healthcare cost trend rate — % — % 4.00 % 4.00 % Ultimate year — — 2045 2045 Weighted-Average Assumptions Used to Determine Net Periodic Benefit Cost for Years Ended December 31 Pension Benefits Post-employment Year Ended December 31, 2021 2020 2019 2021 2020 2019 Discount rate 2.53 % 2.98 % 3.78 % 1.67 % 2.68 % 3.84 % Expected long-term return on plan assets (a) 4.90 % 5.42 % 5.91 % — % — % — % Rate of compensation increase 1.54 % 2.05 % 2.33 % 2.50 % 2.50 % 2.50 % Initial healthcare cost trend rate — % — % — % 5.25 % 6.10 % 6.50 % Ultimate healthcare cost trend rate — % — % — % 4.00 % 4.50 % 4.50 % Ultimate year — — — 2045 2037 2037 _______________________ (a) The expected long-term return on plan assets does not include the Neenah Coldenhove plan assets. The Neenah Coldenhove pension plan is funded through an insurance contract, and the expected return on plan assets is calculated based on the discount rate of the insured obligations. Expected Long-Term Rate of Return and Investment Strategies The expected long-term rate of return on pension fund assets held by the Company's pension trusts was determined based on several factors, including input from pension investment consultants and projected long-term returns of broad equity and bond indices. Also considered were the plans' historical compounded annual returns. It is anticipated that, on average, the managed pension plan assets will generate a return of 5 to 6 percent. The expected long-term rate of return on the assets in the plans was based on an asset allocation assumption of approximately 32 percent with equity managers, with expected long-term rates of return of approximately 7 to 9 percent, 10 percent with hedge funds/other, with expected long-term rates of return of approximately 4 to 6 percent, and 58 percent with fixed income managers, with an expected long-term rate of return of about 2 to 4 percent. The actual asset allocation is regularly reviewed and periodically rebalanced to the targeted allocation when considered appropriate. Plan Assets Pension plan asset allocations are as follows: Percentage of Plan 2021 2020 Asset Category (a) Equity securities 32 % 36 % Hedge fund / Other 10 % 8 % Debt securities / Fixed Income 57 % 56 % Cash and money-market funds 1 % — % Total 100 % 100 % _______________________ (a) The asset categories do not include the insurance contract related to the Neenah Coldenhove pension plan. The Company's investment objective for pension plan assets is to ensure, over the long-term life of the pension plans, an adequate pool of assets to support the benefit obligations to participants, retirees, and beneficiaries. Specifically, these objectives include the desire to: (a) invest assets in a manner such that future assets are available to fund liabilities, (b) maintain liquidity sufficient to pay current benefits when due and (c) diversify, over time, among asset classes so assets earn a reasonable return with acceptable risk to capital. The weighted average target investment allocation and permissible allocation range for plan assets by category are as follows: Strategic Target Permitted Range Asset Category Equity securities 32 % 27%-37% Hedge fund / Other 8 % 3%-13% Debt securities / Fixed Income 60 % 55%-65% As of December 31, 2021, no company or group of companies in a single industry represented more than 5 percent of plan assets. The Company's investment assumptions are established by an investment committee composed of members of senior management and are validated periodically against actual investment returns. As of December 31, 2021, the Company's investment assumptions are as follows: (1) The plan should be substantially fully invested in debt and equity securities at all times because substantial cash holdings will reduce long-term rates of return; (2) Equity investments will provide greater long-term returns than fixed income investments, although with greater short-term volatility; (3) It is prudent to diversify plan investments across major asset classes; (4) Allocating a portion of plan assets to foreign equities will increase portfolio diversification, decrease portfolio risk and provide the potential for long-term returns; (5) Investment managers with active mandates can reduce portfolio risk below market risk and potentially add value through security selection strategies, and a portion of plan assets should be allocated to such active mandates; (6) A component of passive, indexed management can benefit the plans through greater diversification and lower cost, and a portion of the plan assets should be allocated to such passive mandates, and (7) It is appropriate to retain more than one investment manager, given the size of the plans, provided that such managers offer asset class or style diversification. For the years ended December 31, 2021, 2020 and 2019, no plan assets were invested in the Company's securities. Cash Flows At December 31, 2021, the Company expects to make aggregate contributions to qualified and nonqualified defined benefit pension trusts and to pay pension benefits for unfunded pension and other post-employment benefit plans in 2022 of approximately $10 million (based on exchange rates at December 31, 2021). Future Benefit Payments The following benefit payments, which reflect expected future service, as appropriate, are expected to be paid: Pension Plans Post-employment Benefits 2022 $ 19.3 $ 5.4 2023 20.0 4.4 2024 20.7 4.1 2025 21.0 3.7 2026 21.3 3.3 Years 2026-2030 110.4 11.1 Defined Contribution Retirement Plans Company contributions to defined contribution retirement plans are based on various factors for covered employees. Contributions to these plans, all of which were charged to expense, wer e $1.6 million in 2021, $1.8 million in 2020 and $2.0 million in 2019. In addition, the Company maintains a supplemental retirement contribution plan (the "SRCP") which is a non-qualified, unfunded defined contribution plan. The Company provides benefits under the SRCP to the extent necessary to fulfill the intent of its defined contribution retirement plans without regard to the limitations set by the Internal Revenue Code on qualified defined contribution plans. For the years ended December 31, 2021, 2020 and 2019, .the Company recognized expense related to the SRCP of $0.3 million , $0.4 million and $0.4 million, respectively. At December 31, 2021 and December 31, 2020, the unfunded obligation of the SRCP was $1.1 million and $2.0 million, respectively. Investment Plans The Company provides voluntary contribution investment plans (401(k) plans) to substantially all North American employees. Under the plans, the Company matches a portion of employee contributions. For the years ended December 31, 2021, 2020 and 2019, costs charged to expense for Company matching contributions under these plans were $5.3 million , $4.6 million and $4.7 million, respectively.

Stock Compensation Plans

Stock Compensation Plans	12 Months Ended
	Dec. 31, 2021
Share-based Payment Arrangement [Abstract]
Stock Compensation Plans	Stock Compensation Plans The Company established the 2004 Omnibus Stock and Incentive Plan (the "2004 Omnibus Plan") in December 2004 and reserved 3,500,000 shares of $0.01 par value common stock ("Common Stock") for issuance under the Omnibus Plan. Pursuant to the terms of the 2004 Omnibus Plan, the compensation committee of the Company's Board of Directors may grant various types of equity-based compensation awards, including incentive and nonqualified stock options, SARs, RSUs and PSUs, in addition to certain cash-based awards. All grants under the Omnibus Plan will be made at fair market value and no grant may be repriced. In general, the options expire 10 years from the date of grant and vest over a 3-year service period. At the 2018 Annual Meeting of Stockholders, the Company's stockholders approved an amendment and restatement of the 2004 Omnibus Plan (as amended and restated the "2018 Omnibus Plan"). The amendment and restatement authorized the Company to reserve an additional 800,000 shares of Common Stock for future issuance. As of December 31, 2021, the Company had 588,903 shares of Common Stock reserved for future issuance under the 2018 Omnibus Plan. As of December 31, 2021, the number of shares available for future issuance was reduced by approximately 38,926 shares for outstanding SARs where the closing market price for the Company's common stock was greater than the exercise price of the SAR. The Company accounts for stock-based compensation pursuant to the fair value recognition provisions of ASC Topic 718, Compensation — Stock Compensation ("ASC Topic 718"). Valuation and Expense Information Under ASC Topic 718 Substantially all stock-based compensation expense has been recorded in Selling, general and administrative expenses on the consolidated statements of operations. The following table summarizes stock-based compensation costs and related income tax benefits. Year Ended December 31, 2021 2020 2019 Stock-based compensation expense $ 4.5 $ 4.2 $ 5.6 Income tax benefit (1.1) (1.1) (1.4) Stock-based compensation, net of income tax benefit $ 3.4 $ 3.1 $ 4.2 The following table summarizes total compensation costs related to the Company's equity awards and amounts recognized in the year ended December 31, 2021: PSUs and RSUs Unrecognized compensation cost — December 31, 2020 $ 3.9 Grant date fair value current year grants 6.6 Shares forfeited (0.2) Compensation expense recognized (4.5) Unrecognized compensation cost — December 31, 2021 $ 5.8 Expected amortization period (in years) 1.8 Stock Options/SARs Prior to 2020, Company granted nonqualified stock options to certain non-U.S. employees and SARs (collectively 'stock options') to certain U.S. employees. Upon exercise, the holder of a SAR receives common shares equal to the number of SARs exercised multiplied by a fraction where the numerator is equal to the market price at the time of exercise minus the exercise price of the SAR and the denominator is equal to the market price at the time of exercise. The SARs can only be settled for shares of Common Stock and the Company does not receive any cash proceeds upon exercise. There were no stock options awarded during the years ended December 31, 2021 and 2020. The following tables present information regarding stock options awarded during the year ended December 31, 2019. 2019 Stock options granted 1,272 Per share weighted-average exercise price $66.59 Per share weighted-average grant date fair value $10.32 The weighted-average grant date fair value for stock options granted for the year ended December 31, 2019 was estimated using the Black-Scholes option valuation model with the following assumptions: 2019 Expected term in years 5.0 Risk free interest rate 1.8 % Volatility 23.1 % Dividend yield 3.0 % Expected volatility and the expected term were estimated by reference to the historical stock price performance of the Company and historical data for the Company's stock option awards, respectively. The risk-free interest rate was based on the yield on U.S. Treasury bonds with a remaining term approximately equal to the expected term of the stock option awards. Forfeitures were estimated at the date of grant. The following table summarizes stock option activity under the Omnibus Plan for the year ended December 31, 2021: Number of Weighted-Average Options outstanding — December 31, 2020 380,844 $70.99 Add: Options granted — — Less: Options exercised 15,118 $27.28 Less: Options forfeited/cancelled 4,295 $75.59 Options outstanding — December 31, 2021 361,431 $72.76 The status of outstanding and exercisable stock options as of December 31, 2021, summarized by exercise price follows: Options Vested or Expected to Vest Options Exercisable Exercise Price Number of Weighted- Weighted- Aggregate Number of Weighted- Aggregate $24.09 — $42.82 38,926 1.5 $36.61 $ 0.4 37,796 $36.42 $ 0.4 $48.19 — $72.29 109,894 3.8 $58.37 — 109,136 $58.31 — $74.20 — $93.35 212,611 5.5 $86.82 — 212,611 $86.82 — 361,431 4.5 $72.76 $ 0.4 359,543 $72.87 $ 0.4 _______________________ (a) Represents the total pre-tax intrinsic value as of December 31, 2021 that option holders would have received had they exercised their options as of such date. The pre-tax intrinsic value is based on the closing market price for the Company's common stock of $46.28 on December 31, 2021. For the year ended December 31, 2021, the aggregate grant date fair value of options vested was $0.2 million. The aggregate pre-tax intrinsic value of stock options exercised for the years ended December 31, 2021, 2020 and 2019 was $0.4 million, $0.3 million and $1.2 million, respectively. The following table summarizes the status of the Company's unvested stock options as of December 31, 2021 and activity for the year then ended: Number of Weighted-Average Outstanding — December 31, 2020 18,193 $14.48 Add: Options granted — — Less: Options vested 16,126 $14.96 Less: Options forfeited 179 $15.03 Outstanding — December 31, 2021 1,888 $10.32 PSUs/RSUs For the year ended December 31, 2021, the Company granted target awards of 86,584 PSUs. The measurement period for the PSUs is January 1, 2021 through December 31, 2023. Common Stock equal to not more than 200 percent of the PSUs target will be awarded based on the Company’s return on invested capital, consolidated revenue growth, free cash flow and total return to shareholders relative to the companies in the Russell 2000® Value small cap index. The Company’s return on invested capital, consolidated revenue growth and free cash flow are adjusted for certain items as further described in the Performance Share Unit Award Agreement. As of December 31, 2021, the PSU awards were sized at 100 percent of the PSU target value. The market price on the date of grant for the PSUs was $53.00 per share. At the end of the measurement period, the PSUs convert into shares of Common Stock, at the determined rate mentioned above. The Company is recognizing stock-based compensation expense pro-rata over the vesting term of the PSUs/RSUs. For further discussion on participating securities refer to Note 3, "Earnings Per Share." For the year ended December 31, 2021, the Company awarded 11,174 RSUs to non-employee members of the Board of Directors and 44,178 RSUs to employees. The weighted-average grant date fair value of such awards was $53.21 per share and the awards vest one year from the date of grant for the Board of Directors grants and vest in equal amounts per year for three years on the grant date anniversary for the employee grants. During the vesting period, the holders of the RSUs are entitled to dividends, but the RSUs do not have voting rights and are forfeited in the event the holder is no longer an employee or member of the Board of Directors on the vesting date, as further described in the Restricted Stock Unit Award Agreement. The following table summarizes the activity of the Company's unvested stock-based awards (other than stock options) for the years ended December 31, 2021, 2020 and 2019: RSUs Weighted-Average PSUs Weighted-Average Outstanding — December 31, 2018 53,460 $67.53 47,221 $93.21 Shares granted (a) 46,556 $67.04 49,730 $69.05 Shares vested (63,595) $72.91 — — Performance shares vested 10,354 $93.21 (25,833) $93.21 Shares expired or cancelled (2,113) $69.35 (4,927) $85.67 Outstanding — December 31, 2019 44,662 $65.23 66,191 $75.62 Shares granted (a) 100,418 $56.39 44,206 $63.07 Shares vested (61,767) $68.28 — — Performance shares vested 21,101 $69.22 (37,804) $75.60 Shares expired or cancelled (22,210) $64.16 (18,545) $83.30 Outstanding — December 31, 2020 82,204 $53.45 54,048 $62.73 Shares granted (a) 55,352 $53.21 86,584 $54.34 Shares vested (63,490) $54.14 (1,543) $80.15 Shares expired or cancelled (1,441) $59.31 (12,968) $47.52 Outstanding — December 31, 2021 (b) 72,625 $52.55 126,121 $58.32 _______________________ (a) For the years ended December 31, 2021, 2020 and 2019, includes 74 RSUs, 72 RSUs and 43 RSUs, respectively, that were granted in lieu of cash dividends. Such dividends-in-kind vest concurrently with the underlying RSUs. (b) The aggregate pre-tax intrinsic value of outstanding RSUs as of December 31, 2021 was $3.4 million . The aggregate pre-tax intrinsic value of PSUs and RSUs that vested for the years ended December 31, 2021, 2020 and 2019 was $3.2 million , $3.4 million and $4.2 million, respectively. Excess Tax Benefits Excess tax benefits represent the difference between the tax deduction the Company will receive on its tax return for compensation recognized by employees upon the vesting or exercise of stock-based awards and the tax benefit recognized for the grant date fair value of such awards. For the years ended December 31, 2021, 2020 and 2019, the Company recognized excess tax benefits (deficit) related to the exercise or vesting of stock-based awards of $(0.2) million, $(0.4) million and $0.1 million, respectively.

Stockholders' Equity

Stockholders' Equity	12 Months Ended
	Dec. 31, 2021
Stockholders' Equity Note [Abstract]
Stockholders' Equity	Stockholders' Equity Common Stock The Company has authorized 100 million shares of Common Stock. Holders of the Company's Common Stock are entitled to one vote per share. In November 2020, the Company's Board of Directors authorized a program, effective January 1, 2021, that would allow the Company to repurchase up to $25 million of its outstanding Common Stock (the "2021 Stock Purchase Plan"). Purchases by the Company under the 2021 Stock Purchase Plan would be made from time to time in the open market or in privately negotiated transactions in accordance with the requirements of applicable law. The timing and amount of any purchases will depend on share price, market conditions and other factors. The 2021 Stock Purchase Plan does not expire or require the Company to purchase any specific number of shares and may be suspended or discontinued at any time. The Stock Purchase Plan is expected to be funded using cash on hand or borrowings under the Company's bank credit facility. The Company also had $25 million repurchase programs in place during the preceding two years that expired in December 2020 (the “2020 Stock Purchase Plan”) and December 2019 (the “2019 Stock Purchase Plan”), respectively. The following table shows shares purchased under the respective stock purchase plans: Year Ended December 31, 2021 2020 2019 Shares $ Shares $ Shares $ 2021 Stock Purchase Plan 103,785 $ 5.0 2020 Stock Purchase Plan 59,577 $ 3.6 2019 Stock Purchase Plan 79,676 $ 4.9 As of December 31, 2021, under the terms of the Fourth Amended and Restated Credit Agreement and the Term Loan B, the Company has limitations on its ability to repurchase shares of its Common Stock, as further discussed in Note 7, "Debt." For the years ended December 31, 2021, 2020 and 2019, the Company acquir ed 19,273 sh ares, 22,064 shares and 17,774 shares of Common Stock, respectively, at a cost of $1.0 million, $1.2 million and $1.3 million, respectively, for shares surrendered by employees to pay taxes due on vested restricted stock awards and SARs exerci sed. Preferred Stock The Company has authorized 20 million shares of $0.01 par value preferred stock. The preferred stock may be issued in one or more series and with such designations and preferences for each series as shall be stated in the resolutions providing for the designation and issue of each such series adopted by the Board of Directors of the Company. The Board of Directors is authorized by the Company's articles of incorporation to determine the voting, dividend, redemption and liquidation preferences pertaining to each such series. No shares of preferred stock have been issued by the Company. Other Comprehensive Income (Loss) Comprehensive income (loss) includes, in addition to net income (loss), gains and losses recorded directly into stockholders' equity on the consolidated balance sheets. These gains and losses are referred to as other comprehensive income (loss) ("OCI") items. AOCI consists of foreign currency translation gains and (losses), adjustments related to pensions and other post-employment benefits. The Company does not provide income taxes for foreign currency translation adjustments related to indefinite investments in foreign subsidiaries. The components of accumulated other comprehensive income (loss), net of applicable income taxes are as follows: December 31, 2021 2020 Net loss from pension and other post-employment benefit liabilities, net of income tax benefits of $24.2 million and $34.2 million, respectively $ (71.7) $ (102.0) Unrealized foreign currency translation losses, net of income tax benefit of $0.1 million and $(0.4), respectively (25.2) (1.7) AOCI $ (96.9) $ (103.7) The following table presents changes in accumulated other comprehensive income (loss): Year Ended December 31, 2021 2020 2019 Pretax Tax Net Pretax Tax Net Pretax Tax Net Unrealized foreign currency translation gains (losses) $ (24.0) $ 0.5 $ (23.5) $ 18.0 $ (0.7) $ 17.3 $ (3.5) $ — $ (3.5) Adjustment to pension and other benefit liabilities 40.3 (10.0) 30.3 (10.3) 2.6 (7.7) (6.4) 1.7 (4.7) Other comprehensive income (loss) $ 16.3 $ (9.5) $ 6.8 $ 7.7 $ 1.9 $ 9.6 $ (9.9) $ 1.7 $ (8.2) For the years ended December 31, 2021, 2020 and 2019, the Company reclassified $6.0 million, $6.6 million and $6.0 million, respectively, of costs from AOCI to Other expense (income), net on the consolidated statements of operations. For the years ended December 31, 2021, 2020 and 2019, the Company recognized an income tax benefit of $1.4 million, $1.7 million and $1.5 million, respectively, related to such reclassifications classified as Provision (benefit) for income taxes on the consolidated statements of operations. For the year ended December 31, 2021, 2020 and 2019, the Company reclassified costs of $15.7 million, $0.3 million, and $1.3 million, respectively, from AOCI to the Pension and SERP settlement and curtailment losses (gains) on the consolidated statements of operations. For the years ended December 31, 2021, 2020 and 2019, the Company recognized an income tax benefit of $3.9 million, $0.1 million, and $0.3 million, respectively, related to such reclassifications classified as Provision (benefit) for income taxes on the consolidated statements of operations.

Leases

Leases	12 Months Ended
	Dec. 31, 2021
Leases [Abstract]
Leases	Leases Effective January 1, 2019, the Company adopted ASU 2016-02, Leases (Topic 842) using the modified retrospective transition option. The Company also elected the package of transition provisions available for expired or existing contracts, which allowed us to carry forward the historical assessments of (1) whether contracts are or contain leases, (2) lease classification and (3) initial direct costs. The most significant impact was the recognition of right-of-use ("ROU") assets of $16 million and lease liabilities of $17 million as of January 1, 2019. The adoption of this standard did not have a significant effect related to existing leases, and as a result, no cumulative-effect adjustment was needed. The Company also completed the implementation of new processes to assist in the ongoing lease data collection and analysis, and updated its accounting policies and internal controls in connection with the adoption of the new standard. The Company has operating leases for corporate offices, warehouses and certain equipment, with remaining lease terms of up to nine years, some of which include options to extend the leases for up to five years. The Company determines if an arrangement is a lease at inception. Operating leases with terms greater than twelve months are included in "Lease Right- of-Use Assets," "Lease liabilities payable within one year" and "Noncurrent Lease Liabilities" on the consolidated balance sheets. As a result of the Itasa Acquisition, the Company has finance leases for facilities located in Mexico and Spain, with lease terms ranging from 16 to 20 years. As of December 31, 2021, the Company has finance leases in the amount of $21.2 million. Operating lease ROU assets and lease liabilities are recognized based on the present value of the future minimum lease payments over the lease term at commencement date. As most of the Company’s leases do not provide an implicit rate, the Company uses its incremental borrowing rate based on the information available at commencement date in determining the present value of future payments. Lease terms may include options to extend or terminate the lease when it is reasonably certain that the Company will exercise that option. Lease expense for minimum lease payments is recognized on a straight-line basis over the lease term. The Company’s lease agreements contain lease and non-lease components, which are accounted for as a single lease component. Additionally, for certain equipment leases, the Company applies a portfolio approach to effectively account for the operating lease ROU assets and liabilities. The components of lease expense were as follows: Year Ended December 31, 2021 2020 2019 Operating lease cost $ 4.4 $ 4.0 $ 3.1 Finance lease cost: Amortization of ROU assets $ 1.0 $ — $ — Interest on lease liabilities 0.7 — — Total finance lease cost $ 1.7 $ — $ — Short-term lease cost $ 1.6 $ 1.3 $ 1.5 Variable lease cost (a) $ 1.4 $ 1.2 $ 2.1 _______________________ (a) The variable lease costs consist mainly of a warehouse lease where the cost is determined based on the square footage used each month. Supplemental cash flow information related to leases was as follows: Year Ended December 31, 2021 2020 2019 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 4.3 $ 4.0 $ 3.1 Operating cash flows from finance leases $ 0.7 $ — $ — Financing cash flows from finance leases $ 0.7 $ — $ — ROU assets obtained in exchange for lease obligations: Operating leases $ 9.3 $ 9.3 $ 0.4 Finance leases $ 1.0 $ — $ — As of December 31, 2021, the weighted average remaining lease term and weighted average discount rate for operating leases were 6.8 years and 4.5%, respectively. As of December 31, 2021, the weighted average remaining lease term and weighted average discount rate for finance leases were 18.67 years and 4.3% percent, respectively. Maturities of lease liabilities were as follows: Year Ending December 31, Operating Leases Finance Leases 2022 $ 4.1 $ 1.7 2023 3.6 1.7 2024 3.1 1.7 2025 2.6 1.6 2026 2.2 1.6 Thereafter 7.1 22.2 Total lease payments 22.7 30.5 Less: Imputed interest 3.5 9.3 Total lease liabilities $ 19.2 $ 21.2
Leases	Leases Effective January 1, 2019, the Company adopted ASU 2016-02, Leases (Topic 842) using the modified retrospective transition option. The Company also elected the package of transition provisions available for expired or existing contracts, which allowed us to carry forward the historical assessments of (1) whether contracts are or contain leases, (2) lease classification and (3) initial direct costs. The most significant impact was the recognition of right-of-use ("ROU") assets of $16 million and lease liabilities of $17 million as of January 1, 2019. The adoption of this standard did not have a significant effect related to existing leases, and as a result, no cumulative-effect adjustment was needed. The Company also completed the implementation of new processes to assist in the ongoing lease data collection and analysis, and updated its accounting policies and internal controls in connection with the adoption of the new standard. The Company has operating leases for corporate offices, warehouses and certain equipment, with remaining lease terms of up to nine years, some of which include options to extend the leases for up to five years. The Company determines if an arrangement is a lease at inception. Operating leases with terms greater than twelve months are included in "Lease Right- of-Use Assets," "Lease liabilities payable within one year" and "Noncurrent Lease Liabilities" on the consolidated balance sheets. As a result of the Itasa Acquisition, the Company has finance leases for facilities located in Mexico and Spain, with lease terms ranging from 16 to 20 years. As of December 31, 2021, the Company has finance leases in the amount of $21.2 million. Operating lease ROU assets and lease liabilities are recognized based on the present value of the future minimum lease payments over the lease term at commencement date. As most of the Company’s leases do not provide an implicit rate, the Company uses its incremental borrowing rate based on the information available at commencement date in determining the present value of future payments. Lease terms may include options to extend or terminate the lease when it is reasonably certain that the Company will exercise that option. Lease expense for minimum lease payments is recognized on a straight-line basis over the lease term. The Company’s lease agreements contain lease and non-lease components, which are accounted for as a single lease component. Additionally, for certain equipment leases, the Company applies a portfolio approach to effectively account for the operating lease ROU assets and liabilities. The components of lease expense were as follows: Year Ended December 31, 2021 2020 2019 Operating lease cost $ 4.4 $ 4.0 $ 3.1 Finance lease cost: Amortization of ROU assets $ 1.0 $ — $ — Interest on lease liabilities 0.7 — — Total finance lease cost $ 1.7 $ — $ — Short-term lease cost $ 1.6 $ 1.3 $ 1.5 Variable lease cost (a) $ 1.4 $ 1.2 $ 2.1 _______________________ (a) The variable lease costs consist mainly of a warehouse lease where the cost is determined based on the square footage used each month. Supplemental cash flow information related to leases was as follows: Year Ended December 31, 2021 2020 2019 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 4.3 $ 4.0 $ 3.1 Operating cash flows from finance leases $ 0.7 $ — $ — Financing cash flows from finance leases $ 0.7 $ — $ — ROU assets obtained in exchange for lease obligations: Operating leases $ 9.3 $ 9.3 $ 0.4 Finance leases $ 1.0 $ — $ — As of December 31, 2021, the weighted average remaining lease term and weighted average discount rate for operating leases were 6.8 years and 4.5%, respectively. As of December 31, 2021, the weighted average remaining lease term and weighted average discount rate for finance leases were 18.67 years and 4.3% percent, respectively. Maturities of lease liabilities were as follows: Year Ending December 31, Operating Leases Finance Leases 2022 $ 4.1 $ 1.7 2023 3.6 1.7 2024 3.1 1.7 2025 2.6 1.6 2026 2.2 1.6 Thereafter 7.1 22.2 Total lease payments 22.7 30.5 Less: Imputed interest 3.5 9.3 Total lease liabilities $ 19.2 $ 21.2

Commitments, Contingencies, and

Commitments, Contingencies, and Legal Matters	12 Months Ended
	Dec. 31, 2021
Commitments and Contingencies Disclosure [Abstract]
Commitments, Contingencies, and Legal Matters	Commitments, Contingencies, and Legal Matters Litigation The Company is involved in certain legal actions and claims arising in the ordinary course of business. While the outcome of these legal actions and claims cannot be predicted with certainty, it is the opinion of management that the outcome of any such claim which is pending or threatened, either individually or on a combined basis, will not have a material effect on the consolidated financial condition, results of operations or liquidity of the Company. Income Taxes The Company periodically undergoes examination by the Internal Revenue Service (the "IRS") as well as various state and foreign jurisdictions. These tax authorities routinely challenge certain deductions and credits reported by the Company on its income tax returns. No significant tax audit findings are being contested at this time with either the IRS or any state or foreign tax authority. Environmental, Health and Safety Matters The Company is subject to federal, state and local laws, regulations and ordinances relating to various environmental, health and safety matters. The Company is in compliance with, or is taking actions designed to ensure compliance with, these laws, regulations and ordinances. However, the nature of the Company's business exposes it to the risk of claims with respect to environmental, health and safety matters, and there can be no assurance that material costs or liabilities will not be incurred in connection with such claims. Except for certain orders issued by environmental, health and safety regulatory agencies, with which management believes the Company is in compliance and which management believes are immaterial to the results of operations of the Company's business, Neenah is not currently named as a party in any judicial or administrative proceeding relating to environmental, health and safety matters. While the Company has incurred in the past several years, and will continue to incur, capital and operating expenditures in order to comply with environmental, health and safety laws, regulations and ordinances, management believes that the Company's future cost of compliance with environmental, health and safety laws, regulations and ordinances, and its exposure to liability for environmental, health and safety claims will not have a material effect on its financial condition, results of operations or liquidity. However, future events, such as changes in existing laws and regulations or contamination of sites owned, operated or used for waste disposal by the Company (including currently unknown contamination and contamination caused by prior owners and operators of such sites or other waste generators) may give rise to additional costs which could have a material effect on the Company's financial condition, results of operations or liquidity. The Company incurs capital expenditures necessary to meet legal requirements and otherwise relating to the protection of the environment at its facilities in the United States and internationally. The Company's anticipated capital expenditures for environmental projects are not expected to have a material effect on the Company's financial condition, results of operations or liquidity. Employees and Labor Relations As of December 31, 2021, the Company had approximately 2,493 regular full-time employees of whom 952 hourly and 523 salaried employees were located in the North America and 648 hourly and 370 salaried employees were located in Europe. Of the Company's U.S. hourly union employees 690 are represented by the USW. Certain employees of Neenah Germany are eligible to be represented by the Mining, Chemicals and Energy Trade Union, Industriegewerkschaft Bergbau, Chemie and Energie (the "IG BCE"). Under German law union membership is voluntary and does not need to be disclosed to the Company. As a result, the number of employees covered by the collective bargaining agreement with the IG BCE cannot be determined. In Spain and Mexico, most of the employees are eligible to be represented by the local workers' unions: Confederacion Sindical de Comisiones Obreras ("CCOO") and Langile Abertzaalen Batzordeak ("LAB") in Spain; and Confederacion de Trabajadores del Estado de Queretaro ("CTM") in Mexico. Under local laws, union membership is voluntary and does not need to be disclosed to the Company. In Netherlands, most of the employees are eligible to be represented by the Christelijke Nationale Vakbond ("CNV") and the Federatie Nederlandse Vakvereniging ("FNV"). Under Netherlands law, union membership is voluntary and does not need to be disclosed to the Company. The collective bargaining arrangement with CNV and FNV will expire in April 2023. Hourly union employees at the Company's Bolton, England manufacturing facility are represented by Unite the Union ("UNITE"). As of December 31, 2021, 873 employees are covered under collective bargaining agreements that will expire in the next twelve months, not including the employees covered by the collective bargaining arrangements with the CNV and FNV. The following table shows the status of the Company's bargaining agreements as of December 31, 2021: Contract Expiration Date Location Union Number of Employees November 2021 (b) Lowville, NY USW 84 December 2021 (b) Andoain, Spain CCOO, LAB (a) January 2022 (b) Whiting, WI USW 192 June 2022 Neenah, WI USW 213 July 2022 Munising, MI USW 201 September 2022 Weidach and Bruckmühl, Germany IG BCE (a) (c) Queretaro, Mexico CTM (a) April 2023 Eerbeek, Netherlands CNV, FNV (a) _______________________ (a) Under local laws, union membership is voluntary and does not need to be disclosed to the Company. As a result, the number of employees covered by the collective bargaining agreement with the CCOO, LAB, IG BCE, CTM, and the CNV and FNV cannot be determined. (b) The Company is currently in negotiations with the respective unions. Until new contracts are signed, the terms of the previous contracts still apply. (c) Indefinite term contract with periodic revisions approximately every two years. Purchase Commitments The Company has certain minimum purchase commitments that extend beyond December 31, 2021. Commitments under these contracts are approximately $5.7 million, $3.8 million, $3.0 million, and $1.4 million for the years ended December 31, 2022, 2023, and 2024 respectively. Such purchase commitments for the year ended December 31, 2022 are primarily for utilities and information technology contracts. Although the Company is primarily liable for payments on the above-mentioned purchase commitments, management believes exposure to losses, if any, under these arrangements is not material.

Assets Held For Sale and Impair

Assets Held For Sale and Impairment and Asset Restructuring Costs	12 Months Ended
	Dec. 31, 2021
Restructuring and Related Activities [Abstract]
Assets Held For Sale and Impairment and Asset Restructuring Costs	Assets Held For Sale and Impairment and Asset Restructuring Costs Appleton Facility In June 2020, the COVID-19 pandemic triggered the evaluation of the carrying values of long-lived assets in the Technical Products segment, with the largest impact resulting from changes in the duration of the ramp-up of net sales of the Appleton facility. As a result, the Company recorded a non-cash impairment loss of $51.0 million related to the long-lived assets of the Appleton facility. Due to the change in the forecast of net sales and profitability, the Company determined that indicators of impairment in the carrying value of the property, plant and equipment were present. Accordingly, based on the applicable accounting guidance, the Company tested the recoverability of those long-lived assets using undiscounted estimates of the future cash flows from the use of those assets. The recoverability tests indicated that the long-lived assets were impaired at June 30, 2020. As a result, the Company determined the fair value of the long-lived assets principally on a probability-weighting of the discounted cash flows expected under multiple operating scenarios, based in part on the Company's current and future evaluation of economic conditions, as well as current and future plans. The Company used a credit-adjusted risk-free rate of 9.5 percent based on the expected rate of return from the highest and best use of similar assets by a market participant. An impairment charge of $51.0 million was recorded in the Technical Products segment to reduce the carrying value of the assets to their indicated fair values. These fair value calculations were highly subjective and required management to make assumptions and apply judgments to estimates regarding the timing and amount of future cash flows, probabilities related to various cash flow scenarios, and appropriate discount rates based on the perceived risks, among others. Long-lived assets are measured at fair value on a nonrecurring basis using Level 3 inputs. On June 28, 2021, the Company's Board of Directors approved the permanent closure of the Appleton facility. The closure of the facility was substantially complete by the end of the third quarter. In connection with the closure, the Company reduced the carrying value of the facility's assets to an estimated salvage value of $10.5 million, which resulted in an additional non-cash impairment loss of $32.4 million. In addition, the Company recorded $4.9 million of other restructuring charges, including reserves for obsolete inventory, severance costs and environmental exposures. A curtailment loss of $0.5 million was also recognized on the pension obligations of the terminated workers and a settlement loss of $0.3 million was recorded for those workers who opted to take lump-sum distributions (see Note 8, "Pension and Other Post-employment Benefits"). Further, the Company incurred a charge of $2.9 million relating to the loss of certain deferred income tax benefits under a terminated intercompany royalty agreement (see Note 6, "Income Taxes"). During the third quarter of 2021, the Company initiated a process to market for sale the Appleton facility ("disposal group"). The contemplated disposal transaction does not constitute a strategic shift in the business that will have a major effect on operations of the Company. The disposal group was measured at the lower of carrying value and fair value (a Level 2 measurement, based on observable market inputs), less costs to sell. As of December 31, 2021, the disposal group of assets of $10.5 million (consisting of property, plant and equipment) was separately reported as Assets held for sale in the consolidated balance sheets. In addition, an estimated environmental liability of $0.5 million was reported separately as Liabilities of assets held for sale in the consolidated balance sheets as of December 31, 2021. Other Impairments and Asset Restructuring Costs The adverse impacts of COVID-19 led to additional actions in 2020 to consolidate the Company's operational footprint with the idling of a fine paper machine and other smaller assets, and reallocating their volume, optimizing and eliminating certain product brands and SKUs and restructuring parts of its workforce. As a result, the Company recorded accelerated depreciation of $2.6 million related to the idling of the manufacturing assets and $0.4 million of employee termination benefit costs. In 2020, the Company also tested its indefinite-lived intangible assets (brand names) for impairment using the applicable accounting guidance and as a result recorded an impairment loss of $0.9 million and $0.4 million in the Fine Paper and Packaging and Technical Products segments, respectively. In addition, the Company fully impaired its $2.5 million joint venture investment of the Technical Products segment in India with AIM Filtertech. In 2019, the Company recorded $4.7 million of accelerated depreciation and spare parts inventory reserves related to an idled paper machine in the Fine Paper and Packaging segment. A summary of the Assets Held For Sale and Impairment and Asset Restructuring Costs incurred during the years ended December 31, 2021, 2020, and 2019 is as follows: For the Year Ended December 31, 2021 2020 2019 Assets held for sale $ 10.5 $ — $ — Impairment losses $ 32.4 $ 54.8 $ — Restructuring charges from idled assets 4.3 2.6 4.7 Severance costs 0.6 0.4 — Total $ 37.3 $ 57.8 $ 4.7
Assets Held For Sale and Impairment and Asset Restructuring Costs	Assets Held For Sale and Impairment and Asset Restructuring Costs Appleton Facility In June 2020, the COVID-19 pandemic triggered the evaluation of the carrying values of long-lived assets in the Technical Products segment, with the largest impact resulting from changes in the duration of the ramp-up of net sales of the Appleton facility. As a result, the Company recorded a non-cash impairment loss of $51.0 million related to the long-lived assets of the Appleton facility. Due to the change in the forecast of net sales and profitability, the Company determined that indicators of impairment in the carrying value of the property, plant and equipment were present. Accordingly, based on the applicable accounting guidance, the Company tested the recoverability of those long-lived assets using undiscounted estimates of the future cash flows from the use of those assets. The recoverability tests indicated that the long-lived assets were impaired at June 30, 2020. As a result, the Company determined the fair value of the long-lived assets principally on a probability-weighting of the discounted cash flows expected under multiple operating scenarios, based in part on the Company's current and future evaluation of economic conditions, as well as current and future plans. The Company used a credit-adjusted risk-free rate of 9.5 percent based on the expected rate of return from the highest and best use of similar assets by a market participant. An impairment charge of $51.0 million was recorded in the Technical Products segment to reduce the carrying value of the assets to their indicated fair values. These fair value calculations were highly subjective and required management to make assumptions and apply judgments to estimates regarding the timing and amount of future cash flows, probabilities related to various cash flow scenarios, and appropriate discount rates based on the perceived risks, among others. Long-lived assets are measured at fair value on a nonrecurring basis using Level 3 inputs. On June 28, 2021, the Company's Board of Directors approved the permanent closure of the Appleton facility. The closure of the facility was substantially complete by the end of the third quarter. In connection with the closure, the Company reduced the carrying value of the facility's assets to an estimated salvage value of $10.5 million, which resulted in an additional non-cash impairment loss of $32.4 million. In addition, the Company recorded $4.9 million of other restructuring charges, including reserves for obsolete inventory, severance costs and environmental exposures. A curtailment loss of $0.5 million was also recognized on the pension obligations of the terminated workers and a settlement loss of $0.3 million was recorded for those workers who opted to take lump-sum distributions (see Note 8, "Pension and Other Post-employment Benefits"). Further, the Company incurred a charge of $2.9 million relating to the loss of certain deferred income tax benefits under a terminated intercompany royalty agreement (see Note 6, "Income Taxes"). During the third quarter of 2021, the Company initiated a process to market for sale the Appleton facility ("disposal group"). The contemplated disposal transaction does not constitute a strategic shift in the business that will have a major effect on operations of the Company. The disposal group was measured at the lower of carrying value and fair value (a Level 2 measurement, based on observable market inputs), less costs to sell. As of December 31, 2021, the disposal group of assets of $10.5 million (consisting of property, plant and equipment) was separately reported as Assets held for sale in the consolidated balance sheets. In addition, an estimated environmental liability of $0.5 million was reported separately as Liabilities of assets held for sale in the consolidated balance sheets as of December 31, 2021. Other Impairments and Asset Restructuring Costs The adverse impacts of COVID-19 led to additional actions in 2020 to consolidate the Company's operational footprint with the idling of a fine paper machine and other smaller assets, and reallocating their volume, optimizing and eliminating certain product brands and SKUs and restructuring parts of its workforce. As a result, the Company recorded accelerated depreciation of $2.6 million related to the idling of the manufacturing assets and $0.4 million of employee termination benefit costs. In 2020, the Company also tested its indefinite-lived intangible assets (brand names) for impairment using the applicable accounting guidance and as a result recorded an impairment loss of $0.9 million and $0.4 million in the Fine Paper and Packaging and Technical Products segments, respectively. In addition, the Company fully impaired its $2.5 million joint venture investment of the Technical Products segment in India with AIM Filtertech. In 2019, the Company recorded $4.7 million of accelerated depreciation and spare parts inventory reserves related to an idled paper machine in the Fine Paper and Packaging segment. A summary of the Assets Held For Sale and Impairment and Asset Restructuring Costs incurred during the years ended December 31, 2021, 2020, and 2019 is as follows: For the Year Ended December 31, 2021 2020 2019 Assets held for sale $ 10.5 $ — $ — Impairment losses $ 32.4 $ 54.8 $ — Restructuring charges from idled assets 4.3 2.6 4.7 Severance costs 0.6 0.4 — Total $ 37.3 $ 57.8 $ 4.7

Business Segment and Geographic

Business Segment and Geographic Information	12 Months Ended
	Dec. 31, 2021
Segment Reporting [Abstract]
Business Segment and Geographic Information	Business Segment and Geographic Information The Company's two reportable operating segments consist of Technical Products and Fine Paper and Packaging. In January 2021, the Company realigned management of the publishing products component of the Technical Products segment to be part of the Fine Paper and Packaging segment. As a result, the Company recast the comparable 2020 and 2019 information and presented the $26.3 million and $39.9 million of net sales and ($0.9) million and $1.3 million of operating income (loss) for the years ended December 31, 2020 and 2019, respectively, formerly in the Technical Products segment as part of the Fine Paper and Packaging segment. The Company also recast the total assets by segment and presented the $21.0 million of total assets as of December 31, 2020 related to publishing products within the Fine Paper and Packaging segment. The technical products business is an aggregation of the Company’s fiber-formed, coated and/or saturated specialized media that deliver high performance benefits to its international customers, which are similar in terms of economic characteristics, nature of products, processes, customer class and product distribution methods. In the prior year, this segment had two categories: tape and abrasive backings products, digital transfer papers, durable labels and other specialty substrate products (performance materials), and filtration media for transportation, water and other end use applications (filtration). During the three months ended March 31, 2021, the Company further disaggregated the former performance materials business into industrial solutions (tape and abrasive backings products, performance labels and other specialty substrates used for industrial solutions) and specialty coatings (media used for release liners, digital image transfer and other applications), and recast the prior years' disclosure. The increase in the specialty coatings component beginning in the second quarter of 2021 was due to the Itasa Acquisition (see Note 4, "Business Acquisition"). The following table presents sales by product category for the technical products business: Year Ended December 31, 2021 2020 2019 Filtration 40 % 48 % 46 % Industrial Solutions 33 % 39 % 40 % Specialty Coatings 27 % 13 % 14 % Total 100 % 100 % 100 % The fine paper and packaging business is a leading supplier of premium printing and other high-end specialty papers (graphic imaging), premium packaging, and specialty office papers, primarily in North America. During the three months ended March 31, 2021, the Company further disaggregated the former graphic imaging business into commercial and consumer components and recast the prior years' disclosure to combine the consumer and packaging businesses based on the similarity of final customers and end markets they serve. The following table presents sales by product category for the fine paper and packaging business: Year Ended December 31, 2021 2020 2019 Commercial 52 % 54 % 61 % Consumer and packaging 48 % 46 % 39 % Total 100 % 100 % 100 % Each segment employs different technologies and marketing strategies. Disclosure of segment information is on the same basis that management uses internally for evaluating segment performance and allocating resources. Transactions between segments are eliminated in consolidation. The costs of shared services, and other administrative functions managed on a common basis, are allocated to the segments based on usage, where possible, or other factors based on the nature of the activity. General corporate expenses that do not directly support the operations of the business segments are shown as Unallocated corporate costs. The accounting policies of the reportable operating segments are the same as those described in Note 2, "Summary of Significant Accounting Policies." Business Segments Year Ended December 31, 2021 2020 2019 Net sales Technical Products $ 664.2 $ 482.6 $ 501.7 Fine Paper and Packaging 364.3 310.0 436.8 Consolidated $ 1,028.5 $ 792.6 $ 938.5 Year Ended December 31, 2021 2020 2019 Operating income (loss) Technical Products (a) $ 5.6 $ (3.9) $ 43.3 Fine Paper and Packaging (b) 40.9 22.4 54.5 Unallocated corporate costs (c) (58.3) (24.6) (19.5) Consolidated $ (11.8) $ (6.1) $ 78.3 _______________________ (a) Operating income for the year ended December 31, 2021 included impairment costs of $37.3 million, acquisition-related costs of $5.8 million, other restructuring and non-routine costs of $1.0 million, pension settlement and curtailment losses of $0.9 million and COVID-19 costs of $0.5 million. Operating income for the year ended December 31, 2020 included impairment costs of $54.1 million, other restructuring and other non-routine costs of $0.6 million, COVID-19 costs of $1.3 million, and pension settlements of $0.8 million. Operating income for the year ended December 31, 2019 included restructuring and other non-routine costs of $0.3 million and a curtailment gain of $1.5 million related to the Neenah Coldenhove pension plan. (b) Operating income for the year ended December 31, 2021 included COVID-19 costs of $0.8 million. Operating income for the year ended December 31, 2020 included asset restructuring costs of $3.7 million, other restructuring and non-routine costs of $2.3 million, COVID-19 costs of $1.6 million, and pension settlement of $0.4 million. Operating income for the year ended December 31, 2019 included $5.7 million of non-routine costs, primarily related to idled paper machine costs due to the consolidation of the fine paper manufacturing footprint. (c) Unallocated corporate costs for the year ended December 31, 2021 included $37.5 million of one-time costs related to restructuring, loss on debt extinguishment, acquisition-related costs, pension and SERP settlements, and other non-routine charges. Unallocated corporate costs for the year ended December 31, 2020 included costs of $5.6 million, consisting of restructuring and other non-routine costs and a SERP settlement charge. Unallocated corporate costs for the year ended December 31, 2019 included costs of $0.3 million, consisting of restructuring and other non-routine costs and a SERP settlement charge. Year Ended December 31, 2021 2020 2019 Depreciation and amortization Technical Products $ 29.1 $ 21.7 $ 22.0 Fine Paper and Packaging 10.6 12.8 15.3 Corporate 3.0 2.2 1.6 Consolidated $ 42.7 $ 36.7 $ 38.9 Year Ended December 31, 2021 2020 2019 Capital expenditures Technical Products $ 17.7 $ 13.4 $ 13.1 Fine Paper and Packaging 7.5 4.6 7.7 Corporate 3.0 0.9 0.6 Consolidated $ 28.2 $ 18.9 $ 21.4 December 31, 2021 2020 Total Assets (a) Technical Products $ 800.7 $ 531.0 Fine Paper and Packaging 228.4 213.4 Corporate and other (b) 52.6 62.2 Total $ 1,081.7 $ 806.6 _______________________ (a) Segment identifiable assets are those that are directly used in the segments operations. (b) Corporate assets are primarily deferred income taxes, lease ROU assets, and cash. Geographic Information Year Ended December 31, 2021 2020 2019 Net sales North America $ 626.0 $ 533.1 $ 673.0 Germany 246.9 203.9 196.3 Spain 84.1 — — Rest of Europe 71.5 55.6 69.2 Consolidated $ 1,028.5 $ 792.6 $ 938.5 Net sales are attributed to geographic areas based on the physical location of the selling entities. December 31, 2021 2020 Long-Lived Assets North America $ 328.7 $ 314.4 Spain 202.8 — Germany 147.4 160.8 Rest of Europe 55.8 60.1 Total $ 734.7 $ 535.3 Long-lived assets consist of property, plant and equipment, lease ROU assets, deferred income taxes, goodwill, intangibles, over-funded employee benefit plan and other assets. Concentrations For the years ended December 31, 2021, 2020, and 2019 sales to the technical products business' largest customer represented approximately 9 percent, 9 percent, and 8 percent of consolidated net sales, respectively, and approximately 14 percent, 16 percent, and 15 percent of net sales for the technical products segment, respectively. For the years ended December 31, 2021, 2020, and 2019 sales to the largest customer of fine paper and packaging business represented approximately 6 percent, 6 percent, and 8 percent of consolidated net sales, respectively, and approximately 17 percent for the year ended December 31, 2021 and approximately 18 percent of net sales of the fine paper and packaging business for each of the years ended December 31, 2020 and 2019. Except for certain specialty latex grades and specialty softwood pulp used by Technical Products, management is not aware of any significant concentration of business transacted with a particular supplier that could, if suddenly eliminated, have a material effect on its operations.

Supplemental Data

Supplemental Data	12 Months Ended
	Dec. 31, 2021
Balance Sheet Related Disclosures [Abstract]
Supplemental Data	Supplemental Data Supplemental Statement of Operations Data Summary of Advertising and Research and Development Expenses Year Ended December 31, 2021 2020 2019 Advertising expense (a) $ 2.1 $ 3.0 $ 4.9 Research and development expense (a) 8.3 7.6 8.7 _______________________ (a) Advertising expense and research and development expense are recorded in Selling, general and administrative expenses on the consolidated statements of operations. Supplemental Balance Sheet Data Summary of Accounts Receivable, net December 31, 2021 2020 From customers $ 143.9 $ 101.7 Less allowance for doubtful accounts and sales discounts (1.6) (1.5) Total $ 142.3 $ 100.2 Summary of Inventories December 31, 2021 2020 Inventories by Major Class: Raw materials $ 54.7 $ 28.9 Work in progress 32.6 20.1 Finished goods 64.0 61.0 Supplies and other 3.8 5.3 155.1 115.3 Excess of FIFO over LIFO cost (16.6) (6.4) Total $ 138.5 $ 108.9 The first-in, first-out ("FIFO") value of inventories valued on the LIFO method was $95.4 million and $88.5 million at December 31, 2021 and 2020, respectively. For the years ended December 31, 2021 and 2020, income before income taxes was reduced by less than $0.1 million, due to a decrease in certain LIFO inventory quantities. Summary of Prepaid and Other Current Assets December 31, 2021 2020 Prepaid and other current assets $ 14.9 $ 10.6 Spare parts 7.4 6.4 Receivable for income taxes 9.5 8.1 Total $ 31.8 $ 25.1 Summary of Property, Plant and Equipment, net December 31, 2021 2020 Land and land improvements $ 18.9 $ 20.5 Buildings 151.2 160.0 Machinery and equipment 610.4 614.9 Construction in progress 16.3 17.4 796.8 812.8 Less accumulated depreciation 501.3 483.4 Net Property, Plant and Equipment $ 295.5 $ 329.4 Depreciation expense for the years ended December 31, 2021, 2020 and 2019 was $30.8 million, $31.5 million and $33.9 million, respectively. Interest expense capitalized as part of the costs of capital projects was $0.2 million, $0.3 million and $0.2 million, respectively, for the years ended December 31, 2021, 2020 and 2019. Summary of Accrued Expenses December 31, 2021 2020 Accrued salaries and employee benefits $ 25.8 $ 34.0 Amounts due to customers 12.1 8.4 Accrued income taxes 9.1 5.5 Accrued utilities 4.7 3.4 Other 14.9 10.6 Total $ 66.6 $ 61.9 Summary of Noncurrent Employee Benefits December 31, 2021 2020 Pension benefits $ 47.4 $ 62.0 Post-employment benefits other than pensions (a) 30.3 34.8 Total $ 77.7 $ 96.8 _______________________ (a) Post-employment benefits other than pensions included $0.9 million of SRCP benefits and $0.2 million of other long-term benefits as of December 31, 2021. As of December 31, 2020, $0.8 million of SRCP benefits and $0.2 million of other long-term benefits were included. Supplemental Cash Flow Data Supplemental Disclosure of Cash Flow Information Year Ended December 31, 2021 2020 2019 Cash paid during the year for interest, net of interest expense capitalized $ 15.1 $ 12.3 $ 10.9 Cash paid during the year for income taxes, net of refunds 12.2 3.6 13.3 Non-cash investing activities: Liability for equipment acquired 5.8 3.3 3.2 Net Cash Provided by (Used in) Changes in Operating Working Capital, Net of Effect of Acquisitions Year Ended December 31, 2021 2020 2019 Accounts receivable $ (26.2) $ 4.5 $ 11.6 Inventories (8.1) 15.7 8.2 Income taxes receivable/payable (1.0) (1.4) (5.4) Prepaid and other current assets (3.9) (0.2) 2.4 Accounts payable 28.7 (3.6) (14.0) Accrued expenses 5.2 3.2 (3.4) Total $ (5.3) $ 18.2 $ (0.6)

Subsequent Events

Subsequent Events	12 Months Ended
	Dec. 31, 2021
Subsequent Events [Abstract]
Subsequent Events	Subsequent EventOn January 21, 2022, a fire occurred at the Company’s manufacturing facility in Brownville, New York and the facility is currently out of operation. The Company is assessing the financial impact of the fire (net of insurance coverage), the extent of which could vary based on several factors, including, but not limited to, repair costs, material and labor availability, and the time required to complete repairs and restore operations.

SCHEDULE II SCHEDULE OF VALUATI

SCHEDULE II SCHEDULE OF VALUATION AND QUALIFYING ACCOUNTS	12 Months Ended
	Dec. 31, 2021
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]
SCHEDULE II SCHEDULE OF VALUATION AND QUALIFYING ACCOUNTS	SCHEDULE OF VALUATION AND QUALIFYING ACCOUNTS (Dollars in millions) Description Balance at Charged to Charged Write-offs Balance at December 31, 2021 Allowances deducted from assets to which they apply Allowance for doubtful accounts receivable $ 1.1 $ (0.2) $ 0.3 $ — $ 1.2 Allowance for sales discounts 0.4 — — — 0.4 Valuation allowance for deferred income tax assets 10.4 2.4 — (0.3) 12.5 December 31, 2020 Allowances deducted from assets to which they apply Allowance for doubtful accounts receivable $ 1.0 $ 0.5 $ — $ (0.4) $ 1.1 Allowance for sales discounts 0.4 — — — 0.4 Valuation allowance for deferred income tax assets 5.8 4.6 — — 10.4 December 31, 2019 Allowances deducted from assets to which they apply Allowance for doubtful accounts receivable $ 0.8 $ 0.5 $ — $ (0.3) $ 1.0 Allowance for sales discounts 0.5 — (0.1) — 0.4 Valuation allowance for deferred income tax assets 2.7 — 3.1 — 5.8

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2021
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The consolidated financial statements include the financial statements of the Company and its wholly owned and majority owned subsidiaries. All inter-company balances and transactions have been eliminated in consolidation.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with accounting principles generally accepted in the United States ("GAAP") requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements and the reported amounts of net sales and expenses during the reporting periods. Actual results could differ from these estimates, and changes in these estimates are recorded when known. Significant management judgment is required in determining the accounting for, among other things, reserves for uncertain tax positions, pension and post-employment benefit obligations, retained insurable risks, reserves for sales discounts and allowances, purchase price allocations, useful lives for depreciation and amortization, asset retirement obligations ("AROs"), future cash flows associated with impairment testing for tangible and intangible long-lived assets, goodwill, valuation allowance for deferred tax assets, contingencies, inventory obsolescence and market reserves and the valuation of stock-based compensation.
Revenue Recognition	Revenue Recognition The Company recognizes sales revenue at a point in time following the transfer of control of the product to the customer, which typically occurs upon shipment or delivery depending on the terms of the underlying contractual arrangements. Sales are reported net of allowable discounts and estimated returns. Reserves for cash discounts, trade allowances and sales returns are estimated using historical experience. The Company accounts for shipping and handling activities related to contracts with customers as costs to fulfill the promise to transfer the associated products. Accordingly, the Company records customer payments of shipping and handling costs as a component of net sales and classifies such costs as a component of cost of sales. The Company excludes tax amounts assessed by governmental authorities that are both (i) imposed on and concurrent with a specific revenue-producing transaction and (ii) collected from customers from the measurement of transaction prices. Accordingly, such tax amounts are not included as a component of net sales or cost of sales. The Company considers each transaction/shipment as a separate performance obligation. Neenah recognizes revenue when the title transfers to the customer. As such, the remaining performance obligations at period end are not considered material. Sales terms in the technical products business vary depending on the type of product sold and customer category. In general, sales of the technical products businesses are collected in approximately 45 to 55 days, with extended credit terms for certain international customers. Fine paper and packaging sales terms range between 20 and 30 days with discounts of 0 to 2 percent for early customer payments, with discounts of 1 percent and 20-day terms used most often. Extended credit terms are offered to customers consistent with certain local markets. Refer to Note 14, "Business Segment and Geographic Information," for further disaggregation of revenue.
Cash and Cash Equivalents	Cash and Cash EquivalentsCash and cash equivalents include all cash balances and highly liquid investments with an initial maturity of three months or less. The Company places its temporary cash investments with high credit quality financial institutions.
Inventories	Inventories U.S. inventories are valued at the lower of cost, using the last-in, first-out ("LIFO") method for financial reporting purposes, or market. European inventories are valued at the lower of cost, using a weighted-average cost method, or net realizable value. Cost includes labor, materials and production overhead.
Foreign Currency	Foreign Currency Balance sheet accounts of the Company's operations in Germany, Spain and the Netherlands, the United Kingdom (the "U.K."), and Canada are translated from Euros, British Pounds and Canadian dollars, respectively, into U.S. dollars at period-end exchange rates, and income and expense accounts are translated at average exchange rates during the period. Translation gains or losses related to net assets located in these foreign locations are recorded as unrealized foreign currency translation adjustments within accumulated other comprehensive income (loss) ("AOCI") in stockholders' equity. Gains and losses resulting from foreign currency transactions (transactions denominated in a currency other than the entity's functional currency) are included in Other expense (income), net in the consolidated statements of operations.
Property and Depreciation	Property and Depreciation Property, plant and equipment are stated at cost, less accumulated depreciation. Certain costs of software developed or obtained for internal use are capitalized. When property, plant and equipment is sold or retired, the costs and the related accumulated depreciation are removed from the accounts, and the gains or losses are recorded in Other expense (income), net. For financial reporting purposes, depreciation is principally computed on the straight-line method over estimated useful asset lives. The weighted average remaining useful lives for buildings, land improvements and machinery and equipment are approximately 17 years, 19 years and 9 years, respectively. The costs of major rebuilds and replacements of plant and equipment are capitalized, and the cost of maintenance performed on manufacturing facilities, composed of labor, materials and other incremental costs, is expensed as incurred. Start-up costs for new or expanded facilities, including costs related to trial production, are expensed as incurred. The Company accounts for AROs in accordance with Accounting Standards Codification ("ASC") Topic 410, Asset Retirements and Environmental Obligations
Stock-Based Compensation	Stock-Based Compensation The Company accounts for stock-based compensation in accordance with the fair value recognition provisions of ASC Topic 718, Compensation — Stock Compensation ("ASC Topic 718"). The amount of stock-based compensation cost recognized is based on the fair value of grants that are ultimately expected to vest and is recognized pro-rata over the requisite service period for the entire award.
Research and Development Expense	Research and Development Expense Research and development costs are charged to expense as incurred and are recorded in "Selling, general and administrative expenses" on the consolidated statements of operations. See Note 15, "Supplemental Data — Supplemental Statement of Operations Data."
Fair Value Measurements and Fair Value of Pension Plan Assets	Fair Value Measurements The Company measures fair value in accordance with ASC Topic 820, Fair Value Measurements and Disclosures ("ASC Topic 820") which establishes a framework for measuring fair value. ASC Topic 820 provides a fair value hierarchy 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).
Fair Value of Financial Instruments	Fair Value of Financial Instruments As of December 31, 2021 and 2020, the carrying values of the Company’s debt approximated fair value.The fair value for all debt instruments was estimated from Level 2 measurements using rates currently available to the Company for debt of the same remaining maturities. The Company's investments in marketable securities are accounted for as "available-for-sale securities" in accordance with ASC Topic 320, Investments — Debt and Equity Securities ("ASC Topic 320"). Pursuant to ASC Topic 320, marketable securities are reported at fair value on the consolidated balance sheets and holding gains and losses are reported in "Other Income (Expense), net" on the Company's consolidated statements of operations. At December 31, 2021, the Company had $0.7 million in marketable securities classified as Other assets on the consolidated balance sheet. The cost of such marketable securities was $0.7 million. Fair value for the Company's marketable securities was estimated from Level 1 inputs. The Company's marketable securities are designated for the payment of benefits under its supplemental employee retirement plan ("SERP").
Accounting Standards Changes	Accounting Standards Changes In August 2018, the Financial Accounting Standards Board (the "FASB") issued the Accounting Standards Update ("ASU") 2018-14, Compensation—Retirement Benefits—Defined Benefit Plans—General (Topic 715-20): Disclosure Framework—Changes to the Disclosure Requirements For Defined Benefit Plans . The ASU modified the annual disclosure requirements for employers that sponsor defined benefit pension or other postretirement plans. The guidance requires disclosure changes to be presented on a retrospective basis. The Company adopted the guidance as of year-ended December 31, 2020. As this standard relates only to financial disclosures, its adoption did not have an impact on results of operations, financial position or cash flows. In January 2020, the Company adopted ASU 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments, which amends the FASB's guidance on the impairment of financial instruments. The ASU adds to U.S. GAAP an impairment model (known as the "current expected credit loss model" or "CECL") that is based on expected losses rather than incurred losses. The adoption of this standard did not have a material impact on the Company's financial position, results of operations or cash flows. In March 2020, the FASB issued ASU 2020-04, Reference Rate Reform (Topic 848)-Facilitation of the Effects of Reference Rate Reform on Financial Reporting . This ASU addresses accounting implications of the replacement of LIBOR (London Inter-Bank Offered Rate) with SOFR (Secured Overnight Financing Rate) or other alternatives by the end of 2021. The FASB allows immediate relief from application of contract modification accounting triggered by reference rate reform that otherwise would be costly to implement and result in burdensome financial reporting. The Company adopted this ASU in the fourth quarter 2021 by electing the expedients and exceptions offered in the ASU. As of December 31, 2021, no amendments to the ASC had been issued and not adopted by the Company that will have or are reasonably likely to have a material effect on its financial position, results of operations or cash flows.
Earnings per Share	The Company's restricted stock units ("RSUs") are paid non-forfeitable common stock dividends and thus meet the criteria of participating securities. Accordingly, basic EPS has been calculated using the two-class method, under which earnings are allocated to both common stock and participating securities. Basic EPS has been computed by dividing net income allocated to common stock by the weighted average common shares outstanding. For the computation of basic EPS, weighted average RSUs outstanding are excluded from the calculation of weighted average shares outstanding. ASC Topic 260, Earnings per Share ("ASC Topic 260") requires companies with participating securities to calculate diluted earnings per share using the "two class" method. The "two class" method requires first calculating diluted earnings per share using a denominator that includes the weighted average share equivalents from the assumed conversion of dilutive securities. Diluted earnings per share is then calculated using net income reduced by the amount of distributed and undistributed earnings allocated to participating securities calculated using the "Treasury Stock" method and a denominator that includes the weighted average share equivalents from the assumed conversion of dilutive securities excluding participating securities. Companies are required to report the lower of the diluted earnings per share amounts under the two calculations subject to the anti-dilution provisions of ASC Topic 260.
Goodwill	The Company follows the guidance of ASC Topic 805, Business Combinations ("ASC Topic 805"), in recording goodwill arising from a business combination as the excess of purchase price over the fair value of identifiable assets acquired and liabilities assumed. The Company tests goodwill for impairment at least annually on November 30 in conjunction with preparation of its annual business plan, or more frequently if events or circumstances indicate it might be impaired. The Company tested goodwill for impairment as of November 30, 2021 under ASC Topic 350, Intangibles — Goodwill and Other
Finite-Lived Intangible Assets	Intangible assets with finite useful lives are amortized on a straight-line basis over their respective estimated useful lives to their estimated residual values, and reviewed for impairment in accordance with ASC Topic 360, Property, Plant, and Equipment
Business Segments	The Company's two reportable operating segments consist of Technical Products and Fine Paper and Packaging. The technical products business is an aggregation of the Company’s fiber-formed, coated and/or saturated specialized media that deliver high performance benefits to its international customers, which are similar in terms of economic characteristics, nature of products, processes, customer class and product distribution methods. In the prior year, this segment had two categories: tape and abrasive backings products, digital transfer papers, durable labels and other specialty substrate products (performance materials), and filtration media for transportation, water and other end use applications (filtration). During the three months ended March 31, 2021, the Company further disaggregated the former performance materials business into industrial solutions (tape and abrasive backings products, performance labels and other specialty substrates used for industrial solutions) and specialty coatings (media used for release liners, digital image transfer and other applications), and recast the prior years' disclosure. The increase in the specialty coatings component beginning in the second quarter of 2021 was due to the Itasa Acquisition (see Note 4, "Business Acquisition")Each segment employs different technologies and marketing strategies. Disclosure of segment information is on the same basis that management uses internally for evaluating segment performance and allocating resources. Transactions between segments are eliminated in consolidation. The costs of shared services, and other administrative functions managed on a common basis, are allocated to the segments based on usage, where possible, or other factors based on the nature of the activity. General corporate expenses that do not directly support the operations of the business segments are shown as Unallocated corporate costs. The accounting policies of the reportable operating segments are the same as those described in Note 2, "Summary of Significant Accounting Policies."

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2021
Accounting Policies [Abstract]
Schedule of level 3 defined benefit pension plan assets measured at fair value	The following table summarizes the changes in Level 3 defined benefit pension plan assets (Neenah Coldenhove B.V. ("Neenah Coldenhove") insurance contract for which fair value is determined based on actuarial assumptions) measured at fair value on a recurring basis for the year ended December 31, 2021, 2020 and 2019: Return on Plan Assets Fair Value at January 1 Attributable to Assets Held at December 31 Attributable to Assets Sold Net Purchases/ (Settlements) Transfers into/ (out of) Level 3 Foreign currency effects Fair For the year ended December 31, 2019 $ 45.1 7.5 — (0.2) — (0.9) $ 51.5 For the year ended December 31, 2020 $ 51.5 5.0 — (1.5) — 5.1 $ 60.1 For the year ended December 31, 2021 $ 60.1 (1.9) — (1.2) — (4.4) $ 52.6

Earnings per Share ("EPS") (Tab

Earnings per Share ("EPS") (Tables)	12 Months Ended
	Dec. 31, 2021
Earnings Per Share [Abstract]
Schedule of earnings per share, basic and diluted	The following table presents the computation of basic and diluted shares of common stock used in the calculation of EPS (amounts in millions, except share and per share amounts): Earnings (loss) per basic common share Year Ended December 31, 2021 2020 2019 Net income (loss) $ (24.9) $ (15.8) $ 55.4 Amounts attributable to participating securities (0.2) (0.2) (0.3) Net income (loss) available to common stockholders $ (25.1) $ (16.0) $ 55.1 Weighted-average basic shares outstanding 16,821 16,813 16,848 Basic earnings (loss) per share $ (1.49) $ (0.96) $ 3.27 Earnings (loss) per diluted common share Year Ended December 31, 2021 2020 2019 Net income (loss) $ (24.9) $ (15.8) $ 55.4 Amounts attributable to participating securities (0.2) (0.2) (0.3) Net income (loss) available to common stockholders $ (25.1) $ (16.0) $ 55.1 Weighted-average basic shares outstanding 16,821 16,813 16,848 Add: Assumed incremental shares under stock-based compensation plans — — 58 Weighted average diluted shares 16,821 16,813 16,906 Diluted earnings (loss) per share $ (1.49) $ (0.96) $ 3.26

Business Acquisitions (Tables)

Business Acquisitions (Tables)	12 Months Ended
	Dec. 31, 2021
Business Combination and Asset Acquisition [Abstract]
Schedule of purchase price allocation	The following table summarizes the preliminary allocation of the purchase price to the estimated fair value of the assets acquired and liabilities assumed as of April 6, 2021. As of April 6, 2021 Assets Acquired Cash and cash equivalents $ 34.0 Accounts receivable 20.7 Inventories 24.6 Prepaid and other current assets 2.1 Property, plant and equipment 19.8 Finance lease right-of-use assets 22.1 Operating lease right-of-use assets 0.1 Non-amortizable intangible assets 4.1 Amortizable intangible assets 100.5 Other assets 0.3 Goodwill 119.6 Total assets acquired 347.9 Liabilities Assumed Accounts payable 22.3 Accrued expenses 6.5 Long-term debt 26.4 Lease liabilities - finance 22.1 Lease liabilities - operating 0.1 Deferred income taxes 27.6 Other noncurrent obligations 0.3 Total liabilities assumed 105.3 Net assets acquired $ 242.6
Schedule of pro forma information	The following selected unaudited pro forma consolidated statement of operations data for the year ended December 31, 2021 and 2020, was prepared as though the Itasa Acquisition had occurred as of the beginning of 2020. The information does not reflect events that occurred after April 6, 2021 or any operating efficiencies or inefficiencies that may result from the Itasa Acquisition. The pro forma information below includes $18.2 million of non-recurring costs directly attributable to the Itasa Acquisition. Therefore, the information is not necessarily indicative of results that would have been achieved had the businesses been combined during the period presented or the results that the Company will experience going forward. For the Year Ended December 31, 2021 2020 Net Sales $ 1,061.1 $ 908.1 Operating Income (Loss) 16.8 (24.5) Net Income (Loss) (4.7) (34.5) Earnings (Loss) Per Common Share: Basic $ (0.29) $ (2.07) Diluted $ (0.29) $ (2.07)

Goodwill and Other Intangible_2

Goodwill and Other Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of changes in the carrying amount of goodwill	The following table presents the carrying value of goodwill by business segment and changes in the carrying value of goodwill. Technical Products Fine Paper and Packaging Gross Accumulated Gross Amount Accumulated Net Net Total Balance at December 31, 2019 $ 123.4 $ (46.5) $ 76.9 $ 6.2 $ — $ 6.2 $ 83.1 Foreign currency translation 8.6 (4.3) 4.3 — — — 4.3 Balance at December 31, 2020 132.0 (50.8) 81.2 6.2 — 6.2 87.4 Business acquisition (See Note 4) 119.6 — 119.6 — — — 119.6 Adjustment (0.8) — (0.8) — — — (0.8) Foreign currency translation (11.4) 3.8 (7.6) — — — (7.6) Balance at December 31, 2021 $ 239.4 $ (47.0) $ 192.4 $ 6.2 $ — $ 6.2 $ 198.6
Schedule of gross carrying amount of intangible assets and the related accumulated amortization for intangible assets subject to amortization	The following table details amounts related to those assets. December 31, 2021 December 31, 2020 Gross Accumulated Gross Accumulated Amortizable intangible assets Customer based intangibles $ 118.0 $ (15.9) $ 39.6 $ (24.0) Trade names and trademarks 3.3 (1.4) 5.2 (3.1) Acquired technology 17.7 (7.5) 17.3 (9.3) Total amortizable intangible assets 139.0 (24.8) 62.1 (36.4) Indefinite life trade names, net of cumulative impairment losses of $1.3 million as of December 31, 2021 40.4 — 36.9 — Total $ 179.4 $ (24.8) $ 99.0 $ (36.4)

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Schedule of difference between the effective income tax rate and the U.S. federal statutory income tax rate	The following table presents the principal reasons for the difference between the Company's effective income tax rate and the U.S. federal statutory income tax rate: Year Ended December 31, 2021 2021 2020 2020 2019 2019 U.S. federal statutory income tax rate (21.0) % $ (6.2) (21.0) % $ (3.9) 21.0 % $ 14.0 U.S. state income taxes, net of federal income tax benefit (10.1) % (3.0) (10.2) % (1.9) 1.4 % 0.9 Foreign tax rate differences (a) 9.8 % 2.9 15.0 % 2.8 3.6 % 2.4 Foreign financing structure (b) (4.7) % (1.4) (11.2) % (2.1) (3.0) % (2.0) U.S. tax on foreign earnings (c) 2.4 % 0.7 4.3 % 0.8 0.9 % 0.6 Research and development and other tax credits (11.8) % (3.5) (15.5) % (2.9) (6.2) % (4.1) Benefit of CARES Act NOL carryback (d) (4.7) % (1.4) (4.8) % (0.9) — % — Write-off of deferred tax asset for Appleton IP transfer (e) 9.8 % 2.9 — % — — % — Change in valuation allowances (f) 8.1 % 2.4 25.2 % 4.7 0.2 % 0.1 Change in reserves for uncertain tax positions 1.0 % 0.3 (3.7) % (0.7) (1.9) % (1.3) Change in statutory tax rates (g) 2.0 % 0.6 — % — — % — Excess tax benefits from stock compensation — % — 1.1 % 0.2 (0.2) % (0.1) Other differences, net 3.0 % 0.9 5.3 % 1.0 0.9 % 0.6 Effective income tax rate (16.2) % $ (4.8) (15.5) % $ (2.9) 16.7 % $ 11.1 _______________________ (a) Represents the impact on the Company's effective tax rate due to the mix of earnings among taxing jurisdictions with differing statutory rates. In each year, the U.S. federal tax rate is lower than the tax rate in Germany and the Netherlands, and in 2021 was lower than Spain and Mexico. (b) Represents the impact on the Company's effective tax rate of the Company's financing strategies. (c) Includes federal global intangible low-taxed income ("GILTI") impacts and state taxation of foreign earnings and profits ("E&P"). (d) Represents the net benefit of the CARES Act provision to allow for the carryback of the NOL generated in 2020 to the 2015 and 2016 tax years. The estimated tax benefit recorded in 2020 of $0.9 million included a $5.0 million benefit from the tax rate differential and other factors, offset by a $3.0 million impact from provisions of GILTI and a $1.1 million increase in the reserve for uncertain income tax positions for restored R&D Credits. In 2021 when the 2020 tax return was filed, an additional tax benefit of $1.4 million was recorded which included a $1.0 million reduction to the provisions of GILTI and a $0.5 million reduction in the benefit from the tax rate differential and other factors, offset by a $0.1 million increase in the reserve for uncertain income tax positions for restored R&D Credits. (e) In conjunction with the closure of the Appleton facility (see Note 13), the deferred tax asset associated with the future tax benefits from payments to a German subsidiary was written-off, since the royalty agreement for the transfer of intellectual property was terminated and no future payments will occur. (f) In 2021 and 2020, as a result of the impacts of COVID-19 and other factors, the Company evaluated its ability to utilize certain deferred tax assets, including research and development and other tax credits and NOLs, before they expire. The Company recorded in 2021 and 2020 a $2.4 million and $4.7 million, respectively, increase to the valuation allowance against state tax credits and NOLs, the majority of which related to adjustments to the beginning of year valuation allowance for changes in judgment about the realizability of these deferred tax assets in future years. (g) Represents the increase in the net deferred income tax liability from an increase in the statutory income tax rates in the U.K. and the Netherlands.
Schedule of the U.S. and foreign components of income from continuing operations before income taxes	The following table presents the U.S. and foreign components of income before income taxes: Year Ended December 31, 2021 2020 2019 Income (loss) before income taxes: U.S. $ (71.6) $ (55.6) $ 30.1 Foreign 41.9 36.9 36.4 Total $ (29.7) $ (18.7) $ 66.5
Schedule of components of the provision (benefit) for income taxes	The following table presents the components of the provision (benefit) for income taxes: Year Ended December 31, 2021 2020 2019 Provision (benefit) for income taxes: Current: Federal $ (0.6) $ (8.1) $ 0.3 State (0.1) 0.3 (0.2) Foreign 11.9 9.8 7.6 Total current income tax provision 11.2 2.0 7.7 Deferred: Federal (14.9) (6.5) 3.0 State (0.3) 2.5 0.8 Foreign (0.8) (0.9) (0.4) Total deferred income tax provision (16.0) (4.9) 3.4 Total provision (benefit) for income taxes $ (4.8) $ (2.9) $ 11.1
Schedule of components of deferred tax assets and liabilities	The components of deferred income tax assets and liabilities, net of reserves for uncertain tax positions and valuation allowances, are as follows: December 31, 2021 2020 Deferred income tax assets (liabilities) Research and development tax credits $ 28.3 $ 27.5 Employee benefits 8.9 15.6 Capitalized research and development costs and disallowed interest 7.5 — Lease liabilities 4.1 4.6 Net operating losses and other tax credits 2.7 3.7 Accrued liabilities 2.0 1.4 Inventories (a) (1.3) — Lease right-of-use assets (3.7) (4.3) Intangibles (7.6) (4.7) Property, plant and equipment (a) (16.5) (26.7) Other 0.7 1.2 Net deferred income tax assets $ 25.1 $ 18.3 Deferred income tax assets (liabilities) Intangibles $ (27.1) $ (3.0) Property, plant and equipment (17.9) (16.8) Lease right-of-use assets (5.5) (0.9) Inventories (1.9) (0.8) Net operating losses — 0.2 Accrued liabilities 0.5 — Lease liabilities 5.5 0.9 Employee benefits 8.5 9.5 Other (0.3) (1.4) Net deferred income tax liabilities $ (38.2) $ (12.3) _______________________ (a) As of December 31, 2021, included within property, plant and equipment and inventories was a deferred tax liability resulting from tax accounting method changes of $(1.8) million and $(0.3) million, respectively. As of December 31, 2020, included within property, plant and equipment and inventories was a deferred tax liability resulting from tax accounting method changes of $(3.5) million and $(0.6) million, respectively.
Schedule of reconciliation of the total amounts of uncertain tax positions	The following is a tabular reconciliation of the total amounts of uncertain tax positions as of and for the years ended December 31, 2021, 2020 and 2019: Year Ended December 31, 2021 2020 2019 Balance at January 1, $ 8.0 $ 7.8 $ 10.1 Increases in prior period tax positions 0.1 1.1 0.7 Decreases in prior period tax positions — (0.2) (1.2) Increases in current period tax positions 0.5 0.6 0.6 Decreases due to lapse of statutes of limitations (0.4) (1.3) (1.5) Increases from business acquisitions 0.3 — — Decreases due to settlements with tax authorities — — (0.9) Balance at December 31, $ 8.5 $ 8.0 $ 7.8

Debt (Tables)

Debt (Tables)	12 Months Ended
	Dec. 31, 2021
Debt Disclosure [Abstract]
Schedule of long-term debt	Long-term debt consisted of the following: December 31, 2021 2020 Term Loan B Credit Facility (variable rates) due April 2028 $ 447.8 $ — Term Loan B Credit Facility (variable rates) extinguished April 2021 — 199.0 Global Revolving Credit Facility (variable rates) due December 2023 0.9 — Second German Loan Agreement (2.45% fixed rate) due in quarterly installments ending September 2022 1.0 2.4 Third German Loan Agreement (1.45% fixed rate) due in quarterly installments ending September 2022 0.9 2.6 Deferred financing costs (9.3) (9.6) Total Debt 441.3 194.4 Less: Debt payable within one year 6.4 4.9 Long-term debt $ 434.9 $ 189.5
Schedule of leverage ratios and mandatory prepayment requirements	he Company is required to make mandatory prepayments of the Term Loan B from excess cash flow (as defined in the Term B Credit Agreement), commencing with the fiscal year ending December 31, 2021, based on certain secured leverage ratio levels, among other requirements, as per below: Secured leverage ratio levels Mandatory prepayments < 2.75 No prepayments required 2.75 - 3.25 25% of Excess Cash Flow > 3.25 50% of Excess Cash Flow
Schedule of ABR interest rates applicable to outstanding borrowings	ABR borrowings under the Global Revolving Credit Facility will bear interest at the highest interest rate shown in the following table: Applicable Margin (a) U.S. Revolving German Revolving Prime rate 0% to 0.25% Not applicable Federal funds rate +0.50% 0% to 0.25% Not applicable Monthly Benchmark Rate (which cannot be less than zero) +1.00% 0% to 0.25% Not applicable Overnight Benchmark (which cannot be less than zero) Not applicable 1.25%-1.75% _______________________
Schedule of debt payments	The following table presents the Company's required debt payments: 2022 2023 2024 2025 2026 Thereafter Total Debt payments $ 6.4 $ 5.4 $ 4.5 $ 4.5 $ 4.5 $ 425.3 $ 450.6

Pension and Other Post-employ_2

Pension and Other Post-employment Benefits (Tables)	12 Months Ended
	Dec. 31, 2021
Retirement Benefits [Abstract]
Schedule of reconciliation of benefit obligations, plan assets, funded status and net liability information of the Company's pension and other postretirement benefit plans	The following table reconciles the benefit obligations, plan assets, funded status and net liability information of the Company's pension and other post-employment benefit plans: Pension Benefits Post-employment Year Ended December 31, 2021 2020 2021 2020 Change in Benefit Obligation: Benefit obligation at beginning of year $ 531.5 $ 482.4 $ 39.8 $ 39.7 Service cost 3.9 4.6 1.0 1.0 Interest cost 12.5 14.1 0.6 1.0 Currency (8.1) 9.7 (0.2) 0.3 Actuarial (gain) loss (12.4) 44.6 — 2.5 Benefit payments from plans (23.6) (22.3) (5.7) (4.7) Plan curtailment (0.3) — (0.8) — Settlement payments (68.8) (1.6) — — Other — — — — Benefit obligation at end of year $ 434.7 $ 531.5 $ 34.7 $ 39.8 Change in Plan Assets: Fair value of plan assets at beginning of year $ 464.4 $ 424.1 $ — $ — Actual gain (loss) on plan assets 22.0 51.9 — — Employer contributions 5.8 6.8 5.7 — Currency (4.5) 5.5 — — Benefit payments (23.6) (22.3) (5.7) — Settlement payments (68.8) (1.6) — — Other — — — — Fair value of plan assets at end of year $ 395.3 $ 464.4 $ — $ — Reconciliation of Funded Status Fair value of plan assets $ 395.3 $ 464.4 $ — $ — Projected benefit obligation 434.7 531.5 34.7 39.8 Net liability recognized in statement of financial position $ (39.4) $ (67.1) $ (34.7) $ (39.8) Amounts Recognized in the Consolidated Balance Sheets Consist of Noncurrent assets $ 9.5 $ — $ — $ — Current liabilities (1.5) (5.1) (5.5) (6.0) Noncurrent liabilities (47.4) (62.0) (29.2) (33.8) Net amount recognized $ (39.4) $ (67.1) $ (34.7) $ (39.8)
Schedule of amounts recognized in accumulated other comprehensive income (loss)	Amounts recognized in accumulated other comprehensive income (loss) consist of: Pension Post-employment December 31, 2021 2020 2021 2020 Accumulated actuarial loss $ 89.2 $ 126.8 $ 6.6 $ 8.8 Prior service cost 0.1 0.6 — — Total recognized in AOCI $ 89.3 $ 127.4 $ 6.6 $ 8.8
Summary of disaggregated information about the plans	Summary disaggregated information about the pension plans on an accumulated benefit obligation ("ABO") basis follows: December 31, Assets Exceed ABO Exceeds Total 2021 2020 2021 2020 2021 2020 Projected benefit obligation $ 323.4 $ — $ 111.3 $ 531.5 $ 434.7 $ 531.5 Accumulated benefit obligation 318.9 — 111.3 527.9 430.2 527.9 Fair value of plan assets 331.0 — 64.3 464.4 395.3 464.4 Summary disaggregated information about the pension plans on a projected benefit obligation ("PBO") basis follows: December 31, Assets Exceed PBO Exceeds Total 2021 2020 2021 2020 2021 2020 Projected benefit obligation $ 229.2 $ — $ 205.5 $ 531.5 $ 434.7 $ 531.5 Fair value of plan assets 238.7 — 156.6 464.4 395.3 464.4 Summary disaggregated information about post-employment benefits other than pensions follows: December 31, Assets Exceed PBO Exceeds Total 2021 2020 2021 2020 2021 2020 Projected benefit obligation $ — $ — $ 34.7 $ 39.8 $ 34.7 $ 39.8 Fair value of plan assets — — — — — —
Schedule of components of net periodic benefit cost for defined benefit plans	Components of Net Periodic Benefit Cost Pension Benefits Post-employment Benefits Year Ended December 31, 2021 2020 2019 2021 2020 2019 Service cost $ 3.9 $ 4.6 $ 5.0 $ 1.0 $ 1.0 $ 1.2 Interest cost 12.5 14.1 16.2 0.6 1.0 1.5 Expected return on plan assets (a) (19.8) (20.7) (21.1) — — — Recognized net actuarial loss 4.5 5.4 4.9 1.4 0.9 0.9 Amortization of prior service cost (credit) 0.2 0.3 0.2 — — — Curtailment loss (gain) 0.3 — (1.6) — — — Settlement loss 17.1 0.3 0.1 — — — Net periodic benefit cost $ 18.7 $ 4.0 $ 3.7 $ 3.0 $ 2.9 $ 3.6 _______________________ (a) The expected return on plan assets, excluding the Neenah Coldenhove plan assets, is determined by multiplying the fair value of plan assets at the prior year-end (adjusted for estimated current year cash benefit payments and contributions) by the expected long-term rate of return. The Neenah Coldenhove pension plan is funded through an insurance contract, and the expected return on plan assets is calculated based on the discount rate of the insured obligations.
Schedule of 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) Pension Benefits Post-employment Benefits Year Ended December 31, 2021 2020 2019 2021 2020 2019 Net periodic benefit expense $ 18.7 $ 4.0 $ 3.7 $ 3.0 $ 2.9 $ 3.6 Accumulated actuarial gain (loss) (37.6) 9.0 7.7 (2.2) 1.6 (1.5) Prior service cost (credit) (0.5) (0.3) 0.2 — — — Total recognized in other comprehensive income (loss) (38.1) 8.7 7.9 (2.2) 1.6 (1.5) Total recognized in net periodic benefit cost and other comprehensive income (loss) $ (19.4) $ 12.7 $ 11.6 $ 0.8 $ 4.5 $ 2.1
Schedule of weighted-average assumptions used to determine benefit obligations	Weighted-Average Assumptions Used to Determine Benefit Obligations at December 31 Pension Post-employment 2021 2020 2021 2020 Discount rate 2.58 % 2.28 % 2.25 % 1.67 % Rate of compensation increase 1.47 % 1.54 % — % — % Initial healthcare cost trend rate — % — % 5.20 % 5.25 % Ultimate healthcare cost trend rate — % — % 4.00 % 4.00 % Ultimate year — — 2045 2045
Schedule of weighted-average assumptions used to determine net periodic benefit cost	Weighted-Average Assumptions Used to Determine Net Periodic Benefit Cost for Years Ended December 31 Pension Benefits Post-employment Year Ended December 31, 2021 2020 2019 2021 2020 2019 Discount rate 2.53 % 2.98 % 3.78 % 1.67 % 2.68 % 3.84 % Expected long-term return on plan assets (a) 4.90 % 5.42 % 5.91 % — % — % — % Rate of compensation increase 1.54 % 2.05 % 2.33 % 2.50 % 2.50 % 2.50 % Initial healthcare cost trend rate — % — % — % 5.25 % 6.10 % 6.50 % Ultimate healthcare cost trend rate — % — % — % 4.00 % 4.50 % 4.50 % Ultimate year — — — 2045 2037 2037 _______________________ (a) The expected long-term return on plan assets does not include the Neenah Coldenhove plan assets. The Neenah Coldenhove pension plan is funded through an insurance contract, and the expected return on plan assets is calculated based on the discount rate of the insured obligations.
Schedule of pension plan asset allocations	Pension plan asset allocations are as follows: Percentage of Plan 2021 2020 Asset Category (a) Equity securities 32 % 36 % Hedge fund / Other 10 % 8 % Debt securities / Fixed Income 57 % 56 % Cash and money-market funds 1 % — % Total 100 % 100 % _______________________ (a) The asset categories do not include the insurance contract related to the Neenah Coldenhove pension plan.
Schedule of target investment allocation and permissible allocation range for plan assets by category	The weighted average target investment allocation and permissible allocation range for plan assets by category are as follows: Strategic Target Permitted Range Asset Category Equity securities 32 % 27%-37% Hedge fund / Other 8 % 3%-13% Debt securities / Fixed Income 60 % 55%-65%
Schedule of future benefit payments	The following benefit payments, which reflect expected future service, as appropriate, are expected to be paid: Pension Plans Post-employment Benefits 2022 $ 19.3 $ 5.4 2023 20.0 4.4 2024 20.7 4.1 2025 21.0 3.7 2026 21.3 3.3 Years 2026-2030 110.4 11.1

Stock Compensation Plans (Table

Stock Compensation Plans (Tables)	12 Months Ended
	Dec. 31, 2021
Share-based Payment Arrangement [Abstract]
Schedule of stock-based compensation expense and related income tax benefits	The following table summarizes stock-based compensation costs and related income tax benefits. Year Ended December 31, 2021 2020 2019 Stock-based compensation expense $ 4.5 $ 4.2 $ 5.6 Income tax benefit (1.1) (1.1) (1.4) Stock-based compensation, net of income tax benefit $ 3.4 $ 3.1 $ 4.2
Schedule of total compensation costs related to the Company's equity awards and amounts recognized	The following table summarizes total compensation costs related to the Company's equity awards and amounts recognized in the year ended December 31, 2021: PSUs and RSUs Unrecognized compensation cost — December 31, 2020 $ 3.9 Grant date fair value current year grants 6.6 Shares forfeited (0.2) Compensation expense recognized (4.5) Unrecognized compensation cost — December 31, 2021 $ 5.8 Expected amortization period (in years) 1.8
Schedule of stock options awarded	There were no stock options awarded during the years ended December 31, 2021 and 2020. The following tables present information regarding stock options awarded during the year ended December 31, 2019. 2019 Stock options granted 1,272 Per share weighted-average exercise price $66.59 Per share weighted-average grant date fair value $10.32
Schedule of assumptions used to determine the grant date fair value of options granted	The weighted-average grant date fair value for stock options granted for the year ended December 31, 2019 was estimated using the Black-Scholes option valuation model with the following assumptions: 2019 Expected term in years 5.0 Risk free interest rate 1.8 % Volatility 23.1 % Dividend yield 3.0 %
Schedule of stock option activity under the Omnibus Plan	The following table summarizes stock option activity under the Omnibus Plan for the year ended December 31, 2021: Number of Weighted-Average Options outstanding — December 31, 2020 380,844 $70.99 Add: Options granted — — Less: Options exercised 15,118 $27.28 Less: Options forfeited/cancelled 4,295 $75.59 Options outstanding — December 31, 2021 361,431 $72.76
Schedule of outstanding and exercisable stock options summarized by exercise price	The status of outstanding and exercisable stock options as of December 31, 2021, summarized by exercise price follows: Options Vested or Expected to Vest Options Exercisable Exercise Price Number of Weighted- Weighted- Aggregate Number of Weighted- Aggregate $24.09 — $42.82 38,926 1.5 $36.61 $ 0.4 37,796 $36.42 $ 0.4 $48.19 — $72.29 109,894 3.8 $58.37 — 109,136 $58.31 — $74.20 — $93.35 212,611 5.5 $86.82 — 212,611 $86.82 — 361,431 4.5 $72.76 $ 0.4 359,543 $72.87 $ 0.4 _______________________ (a) Represents the total pre-tax intrinsic value as of December 31, 2021 that option holders would have received had they exercised their options as of such date. The pre-tax intrinsic value is based on the closing market price for the Company's common stock of $46.28 on December 31, 2021.
Schedule of status of the Company's unvested stock options	The following table summarizes the status of the Company's unvested stock options as of December 31, 2021 and activity for the year then ended: Number of Weighted-Average Outstanding — December 31, 2020 18,193 $14.48 Add: Options granted — — Less: Options vested 16,126 $14.96 Less: Options forfeited 179 $15.03 Outstanding — December 31, 2021 1,888 $10.32
Summary of activity of unvested stock-based awards	The following table summarizes the activity of the Company's unvested stock-based awards (other than stock options) for the years ended December 31, 2021, 2020 and 2019: RSUs Weighted-Average PSUs Weighted-Average Outstanding — December 31, 2018 53,460 $67.53 47,221 $93.21 Shares granted (a) 46,556 $67.04 49,730 $69.05 Shares vested (63,595) $72.91 — — Performance shares vested 10,354 $93.21 (25,833) $93.21 Shares expired or cancelled (2,113) $69.35 (4,927) $85.67 Outstanding — December 31, 2019 44,662 $65.23 66,191 $75.62 Shares granted (a) 100,418 $56.39 44,206 $63.07 Shares vested (61,767) $68.28 — — Performance shares vested 21,101 $69.22 (37,804) $75.60 Shares expired or cancelled (22,210) $64.16 (18,545) $83.30 Outstanding — December 31, 2020 82,204 $53.45 54,048 $62.73 Shares granted (a) 55,352 $53.21 86,584 $54.34 Shares vested (63,490) $54.14 (1,543) $80.15 Shares expired or cancelled (1,441) $59.31 (12,968) $47.52 Outstanding — December 31, 2021 (b) 72,625 $52.55 126,121 $58.32 _______________________ (a) For the years ended December 31, 2021, 2020 and 2019, includes 74 RSUs, 72 RSUs and 43 RSUs, respectively, that were granted in lieu of cash dividends. Such dividends-in-kind vest concurrently with the underlying RSUs. (b) The aggregate pre-tax intrinsic value of outstanding RSUs as of December 31, 2021 was $3.4 million .

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	12 Months Ended
	Dec. 31, 2021
Stockholders' Equity Note [Abstract]
Schedules of shares purchased under stock purchase plan	The following table shows shares purchased under the respective stock purchase plans: Year Ended December 31, 2021 2020 2019 Shares $ Shares $ Shares $ 2021 Stock Purchase Plan 103,785 $ 5.0 2020 Stock Purchase Plan 59,577 $ 3.6 2019 Stock Purchase Plan 79,676 $ 4.9
Schedule of accumulated other comprehensive income (loss)	The components of accumulated other comprehensive income (loss), net of applicable income taxes are as follows: December 31, 2021 2020 Net loss from pension and other post-employment benefit liabilities, net of income tax benefits of $24.2 million and $34.2 million, respectively $ (71.7) $ (102.0) Unrealized foreign currency translation losses, net of income tax benefit of $0.1 million and $(0.4), respectively (25.2) (1.7) AOCI $ (96.9) $ (103.7) The following table presents changes in accumulated other comprehensive income (loss): Year Ended December 31, 2021 2020 2019 Pretax Tax Net Pretax Tax Net Pretax Tax Net Unrealized foreign currency translation gains (losses) $ (24.0) $ 0.5 $ (23.5) $ 18.0 $ (0.7) $ 17.3 $ (3.5) $ — $ (3.5) Adjustment to pension and other benefit liabilities 40.3 (10.0) 30.3 (10.3) 2.6 (7.7) (6.4) 1.7 (4.7) Other comprehensive income (loss) $ 16.3 $ (9.5) $ 6.8 $ 7.7 $ 1.9 $ 9.6 $ (9.9) $ 1.7 $ (8.2)

Leases (Tables)

Leases (Tables)	12 Months Ended
	Dec. 31, 2021
Leases [Abstract]
Components of lease expense and supplemental cash flow information	The components of lease expense were as follows: Year Ended December 31, 2021 2020 2019 Operating lease cost $ 4.4 $ 4.0 $ 3.1 Finance lease cost: Amortization of ROU assets $ 1.0 $ — $ — Interest on lease liabilities 0.7 — — Total finance lease cost $ 1.7 $ — $ — Short-term lease cost $ 1.6 $ 1.3 $ 1.5 Variable lease cost (a) $ 1.4 $ 1.2 $ 2.1 _______________________ (a) The variable lease costs consist mainly of a warehouse lease where the cost is determined based on the square footage used each month. Supplemental cash flow information related to leases was as follows: Year Ended December 31, 2021 2020 2019 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 4.3 $ 4.0 $ 3.1 Operating cash flows from finance leases $ 0.7 $ — $ — Financing cash flows from finance leases $ 0.7 $ — $ — ROU assets obtained in exchange for lease obligations: Operating leases $ 9.3 $ 9.3 $ 0.4 Finance leases $ 1.0 $ — $ —
Operating lease, liability, maturities	Maturities of lease liabilities were as follows: Year Ending December 31, Operating Leases Finance Leases 2022 $ 4.1 $ 1.7 2023 3.6 1.7 2024 3.1 1.7 2025 2.6 1.6 2026 2.2 1.6 Thereafter 7.1 22.2 Total lease payments 22.7 30.5 Less: Imputed interest 3.5 9.3 Total lease liabilities $ 19.2 $ 21.2
Finance lease, liability, maturities	Maturities of lease liabilities were as follows: Year Ending December 31, Operating Leases Finance Leases 2022 $ 4.1 $ 1.7 2023 3.6 1.7 2024 3.1 1.7 2025 2.6 1.6 2026 2.2 1.6 Thereafter 7.1 22.2 Total lease payments 22.7 30.5 Less: Imputed interest 3.5 9.3 Total lease liabilities $ 19.2 $ 21.2

Commitments, Contingencies, a_2

Commitments, Contingencies, and Legal Matters (Tables)	12 Months Ended
	Dec. 31, 2021
Commitments and Contingencies Disclosure [Abstract]
Schedule of bargaining agreements	The following table shows the status of the Company's bargaining agreements as of December 31, 2021: Contract Expiration Date Location Union Number of Employees November 2021 (b) Lowville, NY USW 84 December 2021 (b) Andoain, Spain CCOO, LAB (a) January 2022 (b) Whiting, WI USW 192 June 2022 Neenah, WI USW 213 July 2022 Munising, MI USW 201 September 2022 Weidach and Bruckmühl, Germany IG BCE (a) (c) Queretaro, Mexico CTM (a) April 2023 Eerbeek, Netherlands CNV, FNV (a) _______________________ (a) Under local laws, union membership is voluntary and does not need to be disclosed to the Company. As a result, the number of employees covered by the collective bargaining agreement with the CCOO, LAB, IG BCE, CTM, and the CNV and FNV cannot be determined. (b) The Company is currently in negotiations with the respective unions. Until new contracts are signed, the terms of the previous contracts still apply.

Assets Held For Sale and Impa_2

Assets Held For Sale and Impairment and Asset Restructuring Costs (Tables)	12 Months Ended
	Dec. 31, 2021
Restructuring and Related Activities [Abstract]
Schedule of asset restructuring and impairment costs	A summary of the Assets Held For Sale and Impairment and Asset Restructuring Costs incurred during the years ended December 31, 2021, 2020, and 2019 is as follows: For the Year Ended December 31, 2021 2020 2019 Assets held for sale $ 10.5 $ — $ — Impairment losses $ 32.4 $ 54.8 $ — Restructuring charges from idled assets 4.3 2.6 4.7 Severance costs 0.6 0.4 — Total $ 37.3 $ 57.8 $ 4.7

Business Segment and Geograph_2

Business Segment and Geographic Information (Tables)	12 Months Ended
	Dec. 31, 2021
Segment Reporting [Abstract]
Schedule of net sales by product	The following table presents sales by product category for the technical products business: Year Ended December 31, 2021 2020 2019 Filtration 40 % 48 % 46 % Industrial Solutions 33 % 39 % 40 % Specialty Coatings 27 % 13 % 14 % Total 100 % 100 % 100 % Year Ended December 31, 2021 2020 2019 Commercial 52 % 54 % 61 % Consumer and packaging 48 % 46 % 39 % Total 100 % 100 % 100 %
Schedule of net sales, operating income (loss) and total assets for each business segment	Business Segments Year Ended December 31, 2021 2020 2019 Net sales Technical Products $ 664.2 $ 482.6 $ 501.7 Fine Paper and Packaging 364.3 310.0 436.8 Consolidated $ 1,028.5 $ 792.6 $ 938.5 Year Ended December 31, 2021 2020 2019 Operating income (loss) Technical Products (a) $ 5.6 $ (3.9) $ 43.3 Fine Paper and Packaging (b) 40.9 22.4 54.5 Unallocated corporate costs (c) (58.3) (24.6) (19.5) Consolidated $ (11.8) $ (6.1) $ 78.3 _______________________ (a) Operating income for the year ended December 31, 2021 included impairment costs of $37.3 million, acquisition-related costs of $5.8 million, other restructuring and non-routine costs of $1.0 million, pension settlement and curtailment losses of $0.9 million and COVID-19 costs of $0.5 million. Operating income for the year ended December 31, 2020 included impairment costs of $54.1 million, other restructuring and other non-routine costs of $0.6 million, COVID-19 costs of $1.3 million, and pension settlements of $0.8 million. Operating income for the year ended December 31, 2019 included restructuring and other non-routine costs of $0.3 million and a curtailment gain of $1.5 million related to the Neenah Coldenhove pension plan. (b) Operating income for the year ended December 31, 2021 included COVID-19 costs of $0.8 million. Operating income for the year ended December 31, 2020 included asset restructuring costs of $3.7 million, other restructuring and non-routine costs of $2.3 million, COVID-19 costs of $1.6 million, and pension settlement of $0.4 million. Operating income for the year ended December 31, 2019 included $5.7 million of non-routine costs, primarily related to idled paper machine costs due to the consolidation of the fine paper manufacturing footprint. (c) Unallocated corporate costs for the year ended December 31, 2021 included $37.5 million of one-time costs related to restructuring, loss on debt extinguishment, acquisition-related costs, pension and SERP settlements, and other non-routine charges. Unallocated corporate costs for the year ended December 31, 2020 included costs of $5.6 million, consisting of restructuring and other non-routine costs and a SERP settlement charge. Unallocated corporate costs for the year ended December 31, 2019 included costs of $0.3 million, consisting of restructuring and other non-routine costs and a SERP settlement charge. Year Ended December 31, 2021 2020 2019 Depreciation and amortization Technical Products $ 29.1 $ 21.7 $ 22.0 Fine Paper and Packaging 10.6 12.8 15.3 Corporate 3.0 2.2 1.6 Consolidated $ 42.7 $ 36.7 $ 38.9 Year Ended December 31, 2021 2020 2019 Capital expenditures Technical Products $ 17.7 $ 13.4 $ 13.1 Fine Paper and Packaging 7.5 4.6 7.7 Corporate 3.0 0.9 0.6 Consolidated $ 28.2 $ 18.9 $ 21.4 December 31, 2021 2020 Total Assets (a) Technical Products $ 800.7 $ 531.0 Fine Paper and Packaging 228.4 213.4 Corporate and other (b) 52.6 62.2 Total $ 1,081.7 $ 806.6 _______________________ (a) Segment identifiable assets are those that are directly used in the segments operations. (b) Corporate assets are primarily deferred income taxes, lease ROU assets, and cash.
Schedule of net sales and assets by geographic areas	Geographic Information Year Ended December 31, 2021 2020 2019 Net sales North America $ 626.0 $ 533.1 $ 673.0 Germany 246.9 203.9 196.3 Spain 84.1 — — Rest of Europe 71.5 55.6 69.2 Consolidated $ 1,028.5 $ 792.6 $ 938.5
Long-lived assets by geographic areas	Net sales are attributed to geographic areas based on the physical location of the selling entities. December 31, 2021 2020 Long-Lived Assets North America $ 328.7 $ 314.4 Spain 202.8 — Germany 147.4 160.8 Rest of Europe 55.8 60.1 Total $ 734.7 $ 535.3

Supplemental Data (Tables)

Supplemental Data (Tables)	12 Months Ended
	Dec. 31, 2021
Balance Sheet Related Disclosures [Abstract]
Summary of advertising and research and development expenses	Summary of Advertising and Research and Development Expenses Year Ended December 31, 2021 2020 2019 Advertising expense (a) $ 2.1 $ 3.0 $ 4.9 Research and development expense (a) 8.3 7.6 8.7 _______________________ (a) Advertising expense and research and development expense are recorded in Selling, general and administrative expenses on the consolidated statements of operations.
Summary of accounts receivable - net	Summary of Accounts Receivable, net December 31, 2021 2020 From customers $ 143.9 $ 101.7 Less allowance for doubtful accounts and sales discounts (1.6) (1.5) Total $ 142.3 $ 100.2
Schedule of inventories by major class	Summary of Inventories December 31, 2021 2020 Inventories by Major Class: Raw materials $ 54.7 $ 28.9 Work in progress 32.6 20.1 Finished goods 64.0 61.0 Supplies and other 3.8 5.3 155.1 115.3 Excess of FIFO over LIFO cost (16.6) (6.4) Total $ 138.5 $ 108.9
Summary of prepaid and other current assets	Summary of Prepaid and Other Current Assets December 31, 2021 2020 Prepaid and other current assets $ 14.9 $ 10.6 Spare parts 7.4 6.4 Receivable for income taxes 9.5 8.1 Total $ 31.8 $ 25.1
Summary of property, plant and equipment - net	Summary of Property, Plant and Equipment, net December 31, 2021 2020 Land and land improvements $ 18.9 $ 20.5 Buildings 151.2 160.0 Machinery and equipment 610.4 614.9 Construction in progress 16.3 17.4 796.8 812.8 Less accumulated depreciation 501.3 483.4 Net Property, Plant and Equipment $ 295.5 $ 329.4
Summary of accrued expenses	Summary of Accrued Expenses December 31, 2021 2020 Accrued salaries and employee benefits $ 25.8 $ 34.0 Amounts due to customers 12.1 8.4 Accrued income taxes 9.1 5.5 Accrued utilities 4.7 3.4 Other 14.9 10.6 Total $ 66.6 $ 61.9
Summary of noncurrent employee benefits	Summary of Noncurrent Employee Benefits December 31, 2021 2020 Pension benefits $ 47.4 $ 62.0 Post-employment benefits other than pensions (a) 30.3 34.8 Total $ 77.7 $ 96.8 _______________________ (a) Post-employment benefits other than pensions included $0.9 million of SRCP benefits and $0.2 million of other long-term benefits as of December 31, 2021. As of December 31, 2020, $0.8 million of SRCP benefits and $0.2 million of other long-term benefits were included.
Schedule of supplemental disclosure of cash flow information	Supplemental Disclosure of Cash Flow Information Year Ended December 31, 2021 2020 2019 Cash paid during the year for interest, net of interest expense capitalized $ 15.1 $ 12.3 $ 10.9 Cash paid during the year for income taxes, net of refunds 12.2 3.6 13.3 Non-cash investing activities: Liability for equipment acquired 5.8 3.3 3.2
Schedule of net cash provided by (used in) changes in working capital, net of effect of acquisitions	Net Cash Provided by (Used in) Changes in Operating Working Capital, Net of Effect of Acquisitions Year Ended December 31, 2021 2020 2019 Accounts receivable $ (26.2) $ 4.5 $ 11.6 Inventories (8.1) 15.7 8.2 Income taxes receivable/payable (1.0) (1.4) (5.4) Prepaid and other current assets (3.9) (0.2) 2.4 Accounts payable 28.7 (3.6) (14.0) Accrued expenses 5.2 3.2 (3.4) Total $ (5.3) $ 18.2 $ (0.6)

Background and Basis of Prese_2

Background and Basis of Presentation - Background (Details)	12 Months Ended
	Dec. 31, 2021operation
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of primary operations	2

Background and Basis of Prese_3

Background and Basis of Presentation - Impacts of COVID-19 (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Restructuring Cost and Reserve [Line Items]
COVID-19 costs	$ 1.6	$ 3.5	$ 0
COVID-19
Restructuring Cost and Reserve [Line Items]
COVID-19 costs	$ 1.6	$ 3.5

Summary of Significant Accoun_4

Summary of Significant Accounting Policies - Revenue Recognition (Details)	12 Months Ended
	Dec. 31, 2021
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Payment discount	1.00%
Payment discount days available	20 days
Minimum
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Collection terms	45 days
Maximum
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Collection terms	55 days
Fine Paper and Packaging | Minimum
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Collection terms	20 days
Payment discount	0.00%
Fine Paper and Packaging | Maximum
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Collection terms	30 days
Payment discount	2.00%

Summary of Significant Accoun_5

Summary of Significant Accounting Policies - Cash and Cash Equivalents (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Post-employment Benefits Other than Pensions
Cash and Cash Equivalents
Restricted cash and cash equivalent	$ 0.3	$ 0.3

Summary of Significant Accoun_6

Summary of Significant Accounting Policies - Property and Depreciation (Details)	12 Months Ended
	Dec. 31, 2021
Buildings
Property and Depreciation
Weighted average useful lives	17 years
Land improvements
Property and Depreciation
Weighted average useful lives	19 years
Machinery and equipment
Property and Depreciation
Weighted average useful lives	9 years

Summary of Significant Accoun_7

Summary of Significant Accounting Policies - Fair Value of Financial Instruments (Details) $ in Millions	Dec. 31, 2021USD ($)
Fair Value of Financial Instruments
Cost of marketable securities	$ 0.7
Fair Value | Other assets | Level 1
Fair Value of Financial Instruments
Fair value of marketable securities	$ 0.7

Summary of Significant Accoun_8

Summary of Significant Accounting Policies - Fair Value of Pension Plan Assets (Details) - Pension Benefits - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 395.3	$ 464.4	$ 424.1
Cash and money-market funds | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	2.2	3.8
U.S. and Non-U.S. Equities
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets measured at NAV	109.8	144.1
U.S. and Non-U.S. Fixed Income Securities
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets measured at NAV	196.3	224.8
Hedge fund / Other
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets measured at NAV	$ 34.4	$ 31.6

Summary of Significant Accoun_9

Summary of Significant Accounting Policies - Summary of the Changes in Level 3 Defined Benefit Plan Assets (Details) - Level 3 - W.A. Sanders Coldenhove Holding B.V. - Insurance Contracts Acquired in Business Combination - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation
Fair value of plan assets at beginning of year	$ 60.1	$ 51.5	$ 45.1
Attributable to Assets Held at December 31	(1.9)	5	7.5
Attributable to Assets Sold	0	0	0
Net Purchases/ (Settlements)	(1.2)	(1.5)	(0.2)
Transfers into/ (out of) Level 3	0	0	0
Foreign currency effects	(4.4)	5.1	(0.9)
Fair value of plan assets at end of year	$ 52.6	$ 60.1	$ 51.5

Earnings per Share ("EPS") - Na

Earnings per Share ("EPS") - Narrative (Details) - shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive options, excluded from the computation of dilutive common shares (in shares)	324,000	332,000	231,000
Dilutive Options and Performance Share Units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive options, excluded from the computation of dilutive common shares (in shares)	15,553	20,576

Earnings per Share ("EPS") - Sc

Earnings per Share ("EPS") - Schedule of Earnings Per Share Calculations, Basic and Diluted (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Earnings (loss) per basic common share
Net income (loss)	$ (24.9)	$ (15.8)	$ 55.4
Amounts attributable to participating securities	(0.2)	(0.2)	(0.3)
Net income (loss) available to common stockholders	$ (25.1)	$ (16)	$ 55.1
Weighted-average basic shares outstanding (in shares)	16,821	16,813	16,848
Basic earnings (loss) per share (in dollars per share)	$ (1.49)	$ (0.96)	$ 3.27
Earnings (loss) per diluted common share
Net Income (Loss)	$ (24.9)	$ (15.8)	$ 55.4
Amounts attributable to participating securities	(0.2)	(0.2)	(0.3)
Net income (loss) available to common stockholders	$ (25.1)	$ (16)	$ 55.1
Weighted-average basic shares outstanding (in shares)	16,821	16,813	16,848
Assumed incremental shares under stock-based compensation plans (in shares)	0	0	58
Weighted average diluted shares (in shares)	16,821	16,813	16,906
Diluted earnings (loss) per share (in dollars per share)	$ (1.49)	$ (0.96)	$ 3.26

Business Acquisitions - Narrati

Business Acquisitions - Narrative (Details) - USD ($)	Apr. 06, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Business Acquisition [Line Items]
Payments to acquire businesses		$ 240,200,000	$ 0	$ 0
Due diligence and transaction costs		200,000	1,500,000	0
Loss on foreign currency forward contracts		5,100,000	$ 0	$ 0
Itasa
Business Acquisition [Line Items]
Payments to acquire businesses	$ 240,200,000
Due diligence and transaction costs	12,800,000
Loss on foreign currency forward contracts	$ (5,100,000)
Goodwill, tax deductible amount		0
Pro forma net sales, actual		106,900,000
Pro forma operating income, actual		3,700,000
One-time cost resulting from step-up in inventory to fair value		$ 5,400,000

Business Acquisitions - Schedul

Business Acquisitions - Schedule of Purchase Price Allocation (Details) - USD ($) $ in Millions	Dec. 31, 2021	Apr. 06, 2021	Dec. 31, 2020	Dec. 31, 2019
Assets Acquired
Non-amortizable intangible assets	$ 198.6		$ 87.4	$ 83.1
Itasa
Assets Acquired
Cash and cash equivalents		$ 34
Accounts receivable		20.7
Inventories		24.6
Property, plant and equipment		2.1
Finance lease right-of-use assets		19.8
Finance lease right-of-use assets		22.1
Operating lease right-of-use assets		0.1
Operating lease right-of-use assets		4.1
Amortizable intangible assets		100.5
Amortizable intangible assets		0.3
Non-amortizable intangible assets		119.6
Total assets acquired		347.9
Liabilities Assumed
Total assets acquired		22.3
Accrued expenses		6.5
Long-term debt		26.4
Lease liabilities - finance		22.1
Lease liabilities - operating		0.1
Accounts payable		27.6
Lease liabilities - finance		0.3
Lease liabilities - operating		105.3
Net assets acquired		$ 242.6

Business Acquisitions - Sched_2

Business Acquisitions - Schedule of Pro Forma Information (Details) - Itasa - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Business Acquisition [Line Items]
Non-recurring transaction costs	$ 18.2
Net Sales	1,061.1	$ 908.1
Operating Income (Loss)	16.8	(24.5)
Net Income (Loss)	$ (4.7)	$ (34.5)
Earnings (Loss) Per Common Share:
Basic (in dollars per share)	$ (0.29)	$ (2.07)
Diluted (in dollars per share)	$ (0.29)	$ (2.07)

Goodwill and Other Intangible_3

Goodwill and Other Intangible Assets - Additional Information (Details) - USD ($)	3 Months Ended	12 Months Ended
	Jun. 30, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Acquired Indefinite-lived Intangible Assets [Line Items]
Goodwill impairment		$ 0	$ 0	$ 0
Net identifiable intangible assets		154,600,000	62,600,000
Impairment of indefinite lived intangible assets		0		0
Finite-lived intangible assets, writeoffs		16,000,000
Estimated annual amortization expense
2022		9,400,000
2023		9,200,000
2024		9,200,000
2025		9,200,000
2026		9,200,000
Itasa
Acquired Indefinite-lived Intangible Assets [Line Items]
Intangible assets acquired		$ 104,600,000
Minimum
Acquired Indefinite-lived Intangible Assets [Line Items]
Intangible asset useful lives		7 years
Maximum
Acquired Indefinite-lived Intangible Assets [Line Items]
Intangible asset useful lives		15 years
Fine Paper and Packaging
Acquired Indefinite-lived Intangible Assets [Line Items]
Net identifiable intangible assets		$ 25,800,000
Impairment of intangible assets	$ 900,000		900,000
Technical Products
Acquired Indefinite-lived Intangible Assets [Line Items]
Net identifiable intangible assets		128,800,000
Impairment of intangible assets	$ 400,000		400,000
Selling, General and Administrative Expenses
Acquired Indefinite-lived Intangible Assets [Line Items]
Aggregate amortization expense of acquired intangible assets		$ 8,800,000	$ 3,700,000	$ 3,900,000

Goodwill and Other Intangible_4

Goodwill and Other Intangible Assets - Changes in carrying value of goodwill (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Goodwill [Roll Forward]
Goodwill, net, beginning balance	$ 87.4	$ 83.1
Foreign currency translation	(7.6)	4.3
Business acquisition (See Note 4)	119.6
Adjustment	(0.8)
Goodwill, net, ending balance	198.6	87.4
Technical Products
Goodwill [Roll Forward]
Goodwill gross, beginning balance	132	123.4
Accumulated impairment loss, beginning of period	(50.8)	(46.5)
Goodwill, net, beginning balance	81.2	76.9
Foreign currency translation gross impact	(11.4)	8.6
Foreign currency translation, accumulated impairment losses impact	3.8	(4.3)
Foreign currency translation	(7.6)	4.3
Business acquisition (See Note 4)	119.6
Adjustment	(0.8)
Goodwill gross, ending balance	239.4	132
Accumulated impairment loss, end of period	(47)	(50.8)
Goodwill, net, ending balance	192.4	81.2
Fine Paper and Packaging
Goodwill [Roll Forward]
Goodwill gross, beginning balance	6.2	6.2
Accumulated impairment loss, beginning of period	0	0
Goodwill, net, beginning balance	6.2	6.2
Foreign currency translation gross impact	0	0
Foreign currency translation, accumulated impairment losses impact	0	0
Foreign currency translation	0	0
Goodwill gross, ending balance	6.2	6.2
Accumulated impairment loss, end of period	0	0
Goodwill, net, ending balance	$ 6.2	$ 6.2

Goodwill and Other Intangible_5

Goodwill and Other Intangible Assets - Schedule of intangible assets (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Finite Lived and Indefinite Live Intangible Assets by Major Class [Line Items]
Impairment of indefinite lived intangible assets	$ 1.3
Amortizable intangible assets, gross amount	139	$ 62.1
Accumulated amortization	(24.8)	(36.4)
Non-amortizable trade names, gross amount	40.4	36.9
Total gross intangible assets	179.4	99
Customer based intangibles
Finite Lived and Indefinite Live Intangible Assets by Major Class [Line Items]
Amortizable intangible assets, gross amount	118	39.6
Accumulated amortization	(15.9)	(24)
Trade names and trademarks
Finite Lived and Indefinite Live Intangible Assets by Major Class [Line Items]
Amortizable intangible assets, gross amount	3.3	5.2
Accumulated amortization	(1.4)	(3.1)
Acquired technology
Finite Lived and Indefinite Live Intangible Assets by Major Class [Line Items]
Amortizable intangible assets, gross amount	17.7	17.3
Accumulated amortization	$ (7.5)	$ (9.3)

Income Taxes - Additional Infor

Income Taxes - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Contingency [Line Items]
Effective income tax rate	16.20%	15.50%	16.70%
Unusual asset impairment and restructuring costs	$ 83.8	$ 70.5
Asset restructuring and impairment costs	35.2	57.8	$ 4.7
Change in valuation allowances	2.4	4.7	$ 0.1
Elimination of deferred tax benefits due to mill closure	2.9
Income tax benefit for tax refunds, CARES Act	1.4	0.9
Income tax receivable, CARES Act	9.1	8
Deferred payroll taxes, CARES Act		4.4
COVID-19
Income Tax Contingency [Line Items]
Change in valuation allowances	$ 2.4	$ 4.7

Income Taxes - Effective Tax Ra

Income Taxes - Effective Tax Rate Reconciliation (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Difference between the effective income tax provision rate and the U.S. federal statutory income tax provision rate
U.S. federal statutory income tax rate	21.00%	21.00%	21.00%
U.S. state income taxes, net of federal income tax benefit	10.10%	10.20%	1.40%
Foreign tax rate differences	(9.80%)	(15.00%)	3.60%
Foreign financing structure	4.70%	11.20%	(3.00%)
U.S. Tax on foreign dividends	(0.024)	(0.043)	0.009
Research and development and other tax credits	11.80%	15.50%	(6.20%)
Benefit of CARES Act NOL carryback	4.70%	4.80%	0.00%
Write-off of deferred tax asset for Appleton IP transfer	9.80%	0.00%	0.00%
Change in valuation allowances	(8.10%)	(25.20%)	0.20%
Change in reserves for uncertain tax positions	(1.00%)	3.70%	(1.90%)
Change in statutory tax rates	(2.00%)	0.00%	0.00%
Excess tax benefits from stock compensation	0.00%	(1.10%)	(0.20%)
Other differences, net	(3.00%)	(5.30%)	0.90%
Effective income tax rate	16.20%	15.50%	16.70%
Difference between the effective income tax provision and the U.S. federal statutory income tax provision
U.S. federal statutory income tax rate	$ (6.2)	$ (3.9)	$ 14
U.S. state income taxes, net of federal income tax benefit	(3)	(1.9)	0.9
Foreign tax rate differences	2.9	2.8	2.4
Foreign financing structure	(1.4)	(2.1)	(2)
U.S. Tax on foreign dividends	0.7	0.8	0.6
Research and development and other tax credits	(3.5)	(2.9)	(4.1)
Benefit of CARES Act NOL carryback	(1.4)	(0.9)	0
Write-off of deferred tax asset for Appleton IP transfer	2.9	0	0
Change in valuation allowances	2.4	4.7	0.1
Change in reserves for uncertain tax positions	0.3	(0.7)	(1.3)
Change in statutory tax rate, amount	0.6	0	0
Excess tax benefits from stock compensation	0	0.2	(0.1)
Other differences, net	0.9	1	0.6
Total provision (benefit) for income taxes	(4.8)	(2.9)	$ 11.1
Benefit from tax rate change and other factors, CARES Act	0.5	5
Impact from GILTI provisions, CARES Act	1	3
Increase in reserve for uncertain income tax positions, CARES Act	0.1	1.1
COVID-19
Difference between the effective income tax provision and the U.S. federal statutory income tax provision
Change in valuation allowances	$ 2.4	$ 4.7

Income Taxes - U.S. and Foreign

Income Taxes - U.S. and Foreign Components (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income (loss) before income taxes:
U.S.	$ (71.6)	$ (55.6)	$ 30.1
Foreign	41.9	36.9	36.4
Income (Loss) Before Income taxes	(29.7)	(18.7)	66.5
Current:
Federal	(0.6)	(8.1)	0.3
State	(0.1)	0.3	(0.2)
Foreign	11.9	9.8	7.6
Total current income tax provision	11.2	2	7.7
Deferred:
Federal	(14.9)	(6.5)	3
State	(0.3)	2.5	0.8
Foreign	(0.8)	(0.9)	(0.4)
Total deferred income tax provision	(16)	(4.9)	3.4
Total provision (benefit) for income taxes	$ (4.8)	$ (2.9)	$ 11.1

Income Taxes - Deferred Tax Ass

Income Taxes - Deferred Tax Asset/Liability and NOLs (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Deferred income tax assets (liabilities)
Net deferred income tax assets	$ 25.1	$ 18.3
Deferred income tax assets (liabilities)
Net deferred income tax liabilities	(38.2)	(12.3)
NOLs
Deferred tax asset related to net operating losses	4.2
Pre-acquisition built-in loss carryforward	5.9
Pre-acquisition built-in carryovers, deferred tax asset	1.2
Undistributed earnings of foreign subsidiaries	52.1	66.5
Domestic Tax Authority
Deferred income tax assets (liabilities)
Research and development tax credits	28.3	27.5
Employee benefits	8.9	15.6
Capitalized research and development costs and disallowed interest	7.5	0
Lease liabilities	4.1	4.6
Net operating losses and other tax credits	2.7	3.7
Accrued liabilities	2	1.4
Inventories	(1.3)	0
Lease right-of-use assets	(3.7)	(4.3)
Intangibles	(7.6)	(4.7)
Property, plant and equipment	(16.5)	(26.7)
Other	0.7	1.2
Net deferred income tax assets	25.1	18.3
Deferred income tax assets (liabilities)
Intangibles	(7.6)	(4.7)
Property, plant and equipment	(16.5)	(26.7)
Lease right-of-use assets	(3.7)	(4.3)
Inventories	(1.3)	0
Accrued liabilities	2	1.4
Lease liabilities	4.1	4.6
Employee benefits	8.9	15.6
Domestic Tax Authority | Change in Accounting Method Accounted for as Change in Estimate
Deferred income tax assets (liabilities)
Inventories	(0.3)	(0.6)
Property, plant and equipment	(1.8)	(3.5)
Deferred income tax assets (liabilities)
Property, plant and equipment	(1.8)	(3.5)
Inventories	(0.3)	(0.6)
Foreign Tax Authority
Deferred income tax assets (liabilities)
Employee benefits	8.5	9.5
Lease liabilities	5.5	0.9
Accrued liabilities	0.5	0
Inventories	(1.9)	(0.8)
Lease right-of-use assets	(5.5)	(0.9)
Intangibles	(27.1)	(3)
Property, plant and equipment	(17.9)	(16.8)
Deferred income tax assets (liabilities)
Intangibles	(27.1)	(3)
Property, plant and equipment	(17.9)	(16.8)
Lease right-of-use assets	(5.5)	(0.9)
Inventories	(1.9)	(0.8)
Net operating losses	0	0.2
Accrued liabilities	0.5	0
Lease liabilities	5.5	0.9
Employee benefits	8.5	9.5
Other	(0.3)	(1.4)
Net deferred income tax liabilities	(38.2)	$ (12.3)
State and Local Jurisdiction
NOLs
Net operating losses	69.9
Research Tax Credit Carryforward | Domestic Tax Authority
NOLs
R & D credits subject to expiration	30.8
Research Tax Credit Carryforward | State and Local Jurisdiction
NOLs
R & D credits subject to expiration	$ 7.7

Income Taxes - Uncertain Tax Po

Income Taxes - Uncertain Tax Positions (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Reconciliation of the total amounts of uncertain tax positions
Balance at beginning of year	$ 8	$ 7.8	$ 10.1
Increases in prior period tax positions	0.1	1.1	0.7
Decreases in prior period tax positions	0	(0.2)	(1.2)
Increases in current period tax positions	0.5	0.6	0.6
Decreases due to lapse of statutes of limitations	(0.4)	(1.3)	(1.5)
Increases from business acquisitions	0.3	0	0
Decreases due to settlements with tax authorities	0	0	(0.9)
Balance at end of year	8.5	8	$ 7.8
Benefit for uncertain tax positions, if recognized	6.8
Accrued for interest and penalties related to uncertain income tax positions	0.1	0.1
Operating loss carryfowards, valuation allowance	7.2	5.1
Deferred Tax Asset
Reconciliation of the total amounts of uncertain tax positions
Balance at beginning of year	7.7
Balance at end of year	7.9	7.7
Other Noncurrent Liabilities
Reconciliation of the total amounts of uncertain tax positions
Balance at end of year	0.6
Deferred Tax Liability
Reconciliation of the total amounts of uncertain tax positions
Balance at beginning of year	0.3
Balance at end of year		0.3
Foreign Tax Authority
Reconciliation of the total amounts of uncertain tax positions
Foreign tax credits set to expire	5.3	5.3
State and Local Jurisdiction
Reconciliation of the total amounts of uncertain tax positions
Operating loss carryfowards, valuation allowance	$ 9.1	$ 6.4

Debt - Schedule of Long-term De

Debt - Schedule of Long-term Debt (Details) € in Millions, $ in Millions	Dec. 31, 2021USD ($)	Dec. 31, 2021EUR (€)	Dec. 31, 2020USD ($)
Debt Instrument [Line Items]
Total debt	$ 441.3		$ 194.4
Deferred financing costs	(9.3)		(9.6)
Less: Debt payable within one year	6.4		4.9
Long-term debt	434.9		189.5
Line of credit | Term Loan B Credit Facility (variable rates) due April 2028
Debt Instrument [Line Items]
Total debt	447.8		0
Line of credit | Term Loan B Credit Facility (variable rates) extinguished April 2021
Debt Instrument [Line Items]
Total debt	0		199
Secured debt | Global Revolving Credit Facility (variable rates) due December 2023
Debt Instrument [Line Items]
Total debt	$ 0.9		0
Secured debt | Second German Loan Agreement (2.45% fixed rate) due in quarterly installments ending September 2022
Debt Instrument [Line Items]
Fixed rate of interest	2.45%	2.45%
Total debt	$ 1	€ 0.9	2.4
Secured debt | Third German Loan Agreement (1.45% fixed rate) due in quarterly installments ending September 2022
Debt Instrument [Line Items]
Fixed rate of interest	1.45%	1.45%
Total debt	$ 0.9	€ 0.8	$ 2.6

Debt - Narrative (Details)

Debt - Narrative (Details)	Apr. 06, 2021USD ($)	Jun. 30, 2020USD ($)	Dec. 31, 2021USD ($)	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)	Dec. 31, 2021EUR (€)	Jun. 30, 2021USD ($)	Dec. 31, 2018USD ($)	May 31, 2018EUR (€)	Jan. 31, 2013EUR (€)
Debt Instrument [Line Items]
Loss on debt extinguishment			$ 7,200,000	$ 1,900,000	$ 0
Borrowings outstanding			441,300,000	194,400,000
German Revolving Credit Facility | Letter of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity								$ 5,000,000
U.S. Revolving Credit Facility | Letter of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity								20,000,000
Line of credit | Term Loan B Credit Facility (variable rates) extinguished April 2021
Debt Instrument [Line Items]
Borrowings outstanding			0	199,000,000
Line of credit | Term Loan B Credit Facility (variable rates) extinguished April 2021 | Term B Facility
Debt Instrument [Line Items]
Term of instrument		7 years
Face amount		$ 200,000,000
Line of credit | Term Loan B Credit Facility (variable rates) due April 2028
Debt Instrument [Line Items]
Borrowings outstanding			$ 447,800,000	$ 0
Line of credit | Term Loan B Credit Facility (variable rates) due April 2028 | Term B Facility
Debt Instrument [Line Items]
Term of instrument	7 years
Face amount	$ 450,000,000
Aggregate annual payments as percentage of original principal amount	1.00%
Additional borrowing capacity (up to)							$ 150,000,000
Weighted-average interest rate			3.50%			3.50%
Dividends included in excess cashflow calculation		$ 8,750,000
Leverage ratio			370.00%			370.00%
Dividends included in excess cashflow and redemptions or prepayments of debt, maximum amount of tangible assets							$ 125,000,000
Dividends included in excess cashflow and redemptions or prepayments of debt, maximum percent of tangible assets							15.00%
Line of credit | Term Loan B Credit Facility (variable rates) due April 2028 | Minimum | Term B Facility | Leverage Ratio exceeds 3.0 but is less than or equal to 4.0
Debt Instrument [Line Items]
Secured leverage ratio levels		300.00%
Line of credit | Term Loan B Credit Facility (variable rates) due April 2028 | Maximum | Term B Facility | Leverage Ratio does not exceed 3.0
Debt Instrument [Line Items]
Secured leverage ratio levels		300.00%
Line of credit | Term Loan B Credit Facility (variable rates) due April 2028 | Maximum | Term B Facility | Leverage Ratio exceeds 3.0 but is less than or equal to 4.0
Debt Instrument [Line Items]
Secured leverage ratio levels		400.00%
Line of credit | Term Loan B Credit Facility (variable rates) extinguished April 2021 | Minimum | Term B Facility
Debt Instrument [Line Items]
Secured leverage ratio levels			275.00%
Line of credit | Term Loan B Credit Facility (variable rates) extinguished April 2021 | Maximum | Term B Facility
Debt Instrument [Line Items]
Secured leverage ratio levels			325.00%
Secured debt | Letter of Credit
Debt Instrument [Line Items]
Borrowings outstanding			$ 300,000
Secured debt | German Revolving Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity								50,000,000
Secured debt | Global Revolving Credit Facility (variable rates) due December 2023
Debt Instrument [Line Items]
Weighted-average interest rate			1.30%	1.30%		1.30%
Maximum borrowing capacity								300,000,000
Maximum borrowing capacity that may be increased								125,000,000
Facility fee on unused amount of revolver commitment			0.25%
Borrowings outstanding			$ 900,000
Available credit			146,100,000
Borrowings outstanding			$ 900,000	$ 0
Secured debt | U.S. Revolving Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity								$ 125,000,000
Secured debt | Second German Loan Agreement (2.45% fixed rate) due in quarterly installments ending September 2022
Debt Instrument [Line Items]
Fixed rate of interest			2.45%			2.45%
Maximum borrowing capacity | €										€ 9,000,000
Borrowings outstanding			$ 1,000,000	2,400,000		€ 900,000
Secured debt | Third German Loan Agreement (1.45% fixed rate) due in quarterly installments ending September 2022
Debt Instrument [Line Items]
Face amount | €									€ 5,000,000
Fixed rate of interest			1.45%			1.45%
Borrowings outstanding			$ 900,000	$ 2,600,000		€ 800,000
Senior notes | New Senior Notes Due May 2021
Debt Instrument [Line Items]
Fixed rate of interest			5.25%			5.25%
LIBOR | Line of credit | Term Loan B Credit Facility (variable rates) due April 2028 | Term B Facility
Debt Instrument [Line Items]
Debt instrument basis spread on variable rate	3.00%
Base Rate | Line of credit | Term Loan B Credit Facility (variable rates) due April 2028 | Term B Facility
Debt Instrument [Line Items]
Debt instrument basis spread on variable rate		2.00%
Debt instrument, alternate borrowing rate floor		1.50%
Benchmark Rate | German Revolving Credit Facility
Debt Instrument [Line Items]
Debt instrument, alternate borrowing rate floor			0.00%
Benchmark Rate | German Revolving Credit Facility | Minimum
Debt Instrument [Line Items]
Debt instrument basis spread on variable rate			1.25%
Benchmark Rate | German Revolving Credit Facility | Maximum
Debt Instrument [Line Items]
Debt instrument basis spread on variable rate			1.75%
Benchmark Rate | U.S. Revolving Credit Facility
Debt Instrument [Line Items]
Debt instrument, alternate borrowing rate floor			0.00%
Benchmark Rate | U.S. Revolving Credit Facility | Minimum
Debt Instrument [Line Items]
Debt instrument basis spread on variable rate			0.00%
Benchmark Rate | U.S. Revolving Credit Facility | Maximum
Debt Instrument [Line Items]
Debt instrument basis spread on variable rate			0.25%
Benchmark Rate | Line of credit | Term Loan B Credit Facility (variable rates) due April 2028 | Term B Facility
Debt Instrument [Line Items]
Debt instrument, alternate borrowing rate floor		0.50%
Benchmark Rate | Secured debt | German Revolving Credit Facility | Minimum
Debt Instrument [Line Items]
Debt instrument basis spread on variable rate			1.25%
Benchmark Rate | Secured debt | German Revolving Credit Facility | Maximum
Debt Instrument [Line Items]
Debt instrument basis spread on variable rate			1.75%

Debt - Schedule of Term Loan Re

Debt - Schedule of Term Loan Repayments (Details) - Term B Facility - Line of credit	Jun. 30, 2020	Dec. 31, 2021
Term Loan B Credit Facility (variable rates) extinguished April 2021 | Minimum
Debt Instrument [Line Items]
Secured leverage ratio levels		275.00%
Term Loan B Credit Facility (variable rates) extinguished April 2021 | Maximum
Debt Instrument [Line Items]
Secured leverage ratio levels		325.00%
Leverage Ratio 2.75 to 3.25 | Term Loan B Credit Facility (variable rates) due April 2028
Debt Instrument [Line Items]
Mandatory prepayments		25.00%
Leverage Ratio 2.75 to 3.25 | Term Loan B Credit Facility (variable rates) due April 2028 | Maximum
Debt Instrument [Line Items]
Secured leverage ratio levels	300.00%
Leverage Ratio 3.25 | Term Loan B Credit Facility (variable rates) due April 2028
Debt Instrument [Line Items]
Mandatory prepayments		50.00%
Leverage Ratio 3.25 | Term Loan B Credit Facility (variable rates) due April 2028 | Minimum
Debt Instrument [Line Items]
Secured leverage ratio levels	300.00%
Leverage Ratio 3.25 | Term Loan B Credit Facility (variable rates) due April 2028 | Maximum
Debt Instrument [Line Items]
Secured leverage ratio levels	400.00%

Debt - Summary of Variable Rate

Debt - Summary of Variable Rates (Details)	12 Months Ended
	Dec. 31, 2021
Prime rate | U.S. Revolving Credit Facility | Minimum
Line of Credit Facility [Line Items]
Debt instrument basis spread on variable rate	0.00%
Prime rate | U.S. Revolving Credit Facility | Maximum
Line of Credit Facility [Line Items]
Debt instrument basis spread on variable rate	0.25%
Federal funds rate | U.S. Revolving Credit Facility
Line of Credit Facility [Line Items]
Debt instrument, basis spread alternate borrowing rate	0.50%
Federal funds rate | U.S. Revolving Credit Facility | Minimum
Line of Credit Facility [Line Items]
Debt instrument basis spread on variable rate	0.00%
Federal funds rate | U.S. Revolving Credit Facility | Maximum
Line of Credit Facility [Line Items]
Debt instrument basis spread on variable rate	0.25%
Benchmark Rate | U.S. Revolving Credit Facility
Line of Credit Facility [Line Items]
Debt instrument, basis spread alternate borrowing rate	1.00%
Debt instrument, alternate borrowing rate floor	0.00%
Benchmark Rate | U.S. Revolving Credit Facility | Minimum
Line of Credit Facility [Line Items]
Debt instrument basis spread on variable rate	0.00%
Benchmark Rate | U.S. Revolving Credit Facility | Maximum
Line of Credit Facility [Line Items]
Debt instrument basis spread on variable rate	0.25%
Benchmark Rate | German Revolving Credit Facility
Line of Credit Facility [Line Items]
Debt instrument, alternate borrowing rate floor	0.00%
Benchmark Rate | German Revolving Credit Facility | Minimum
Line of Credit Facility [Line Items]
Debt instrument basis spread on variable rate	1.25%
Benchmark Rate | German Revolving Credit Facility | Maximum
Line of Credit Facility [Line Items]
Debt instrument basis spread on variable rate	1.75%

Debt - Principal Payments (Deta

Debt - Principal Payments (Details) $ in Millions	Dec. 31, 2021USD ($)
Debt payments
2022	$ 6.4
2023	5.4
2024	4.5
2025	4.5
2026	4.5
Thereafter	425.3
Total	$ 450.6

Pension and Other Post-employ_3

Pension and Other Post-employment Benefits - Narrative (Details)	Jun. 28, 2021USD ($)	Nov. 30, 2021USD ($)retiree	Oct. 31, 2019USD ($)	Dec. 31, 2021USD ($)	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)
Defined Benefit Plan Disclosure [Line Items]
Noncurrent assets				$ 9,500,000	$ 0
Aggregate contributions to qualified and non-qualified pension trusts and payments of pension benefits for unfunded pension plans				10,000,000
Pace Industry Union-Management Pension Fund
Defined Benefit Plan Disclosure [Line Items]
Multiemployer plans minimum contribution			$ 100,000
Multiemployer plans minimum contribution period			20 years
Multiemployer plans, accumulated funding deficiency, settlement amount					1,200,000
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Settlement loss		$ 15,600,000		17,100,000	300,000	$ 100,000
Payment for pension and other postretirement benefits				68,800,000	1,200,000	500,000
Curtailment gain (loss)				(300,000)	0	$ 1,600,000
Payments to acquire group annuity		$ 64,000,000
Number of retirees | retiree		1,400
Funded status increase from prior year				27,700,000	8,800,000
Noncurrent assets				$ 9,500,000	$ 0
Expected long-term return on plan assets				4.90%	5.42%	5.91%
Amount of plan assets invested in the entity's securities				$ 0	$ 0	$ 0
Pension Benefits | Neenah Germany
Defined Benefit Plan Disclosure [Line Items]
Noncurrent assets				2,500,000
Pension Benefits | Facility Closing | Appleton Mill Closure
Defined Benefit Plan Disclosure [Line Items]
Settlement loss	$ 300,000
Curtailment gain (loss)	$ (500,000)			$ (300,000)
Pension Benefits | Minimum
Defined Benefit Plan Disclosure [Line Items]
Expected long-term return on plan assets				5.00%
Pension Benefits | Maximum
Defined Benefit Plan Disclosure [Line Items]
Expected long-term return on plan assets				6.00%
Defined contribution retirement plans
Defined Benefit Plan Disclosure [Line Items]
Defined contribution plan, cost				$ 1,600,000	1,800,000	2,000,000
Supplemental retirement contribution plan
Defined Benefit Plan Disclosure [Line Items]
Defined contribution plan, cost				300,000	400,000	400,000
Unfunded obligation				1,100,000	2,000,000
Voluntary contribution investment plans
Defined Benefit Plan Disclosure [Line Items]
Defined contribution plan, cost				$ 5,300,000	$ 4,600,000	$ 4,700,000
Equity securities
Defined Benefit Plan Disclosure [Line Items]
Asset allocation				32.00%
Equity securities | Minimum
Defined Benefit Plan Disclosure [Line Items]
Expected long-term return on plan assets				7.00%
Equity securities | Maximum
Defined Benefit Plan Disclosure [Line Items]
Expected long-term return on plan assets				9.00%
Equity securities | Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Asset allocation				32.00%
Equity securities | Pension Benefits | Minimum
Defined Benefit Plan Disclosure [Line Items]
Asset allocation				27.00%
Equity securities | Pension Benefits | Maximum
Defined Benefit Plan Disclosure [Line Items]
Asset allocation				37.00%
Hedge fund / Other
Defined Benefit Plan Disclosure [Line Items]
Asset allocation				10.00%
Hedge fund / Other | Minimum
Defined Benefit Plan Disclosure [Line Items]
Expected long-term return on plan assets				400.00%
Hedge fund / Other | Maximum
Defined Benefit Plan Disclosure [Line Items]
Expected long-term return on plan assets				6.00%
Hedge fund / Other | Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Asset allocation				8.00%
Hedge fund / Other | Pension Benefits | Minimum
Defined Benefit Plan Disclosure [Line Items]
Asset allocation				3.00%
Hedge fund / Other | Pension Benefits | Maximum
Defined Benefit Plan Disclosure [Line Items]
Asset allocation				13.00%
U.S. and Non-U.S. Fixed Income Securities
Defined Benefit Plan Disclosure [Line Items]
Asset allocation				58.00%
U.S. and Non-U.S. Fixed Income Securities | Minimum
Defined Benefit Plan Disclosure [Line Items]
Expected long-term return on plan assets				2.00%
U.S. and Non-U.S. Fixed Income Securities | Maximum
Defined Benefit Plan Disclosure [Line Items]
Expected long-term return on plan assets				4.00%
U.S. and Non-U.S. Fixed Income Securities | Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Asset allocation				60.00%
U.S. and Non-U.S. Fixed Income Securities | Pension Benefits | Minimum
Defined Benefit Plan Disclosure [Line Items]
Asset allocation				55.00%
U.S. and Non-U.S. Fixed Income Securities | Pension Benefits | Maximum
Defined Benefit Plan Disclosure [Line Items]
Asset allocation				65.00%
Prepaid Expenses and Other Current Assets | Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Noncurrent assets				$ 700,000
Other assets | Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Noncurrent assets				$ 1,800,000

Pension and Other Post-employ_4

Pension and Other Post-employment Benefits - Benefit Plan Obligations, Plan Assets, Funded Status, and Net Liability Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Amounts Recognized in the Consolidated Balance Sheets Consist of
Noncurrent assets	$ 9.5	$ 0
Noncurrent liabilities	(77.7)	(96.8)
Pension Benefits
Change in Benefit Obligation:
Benefit obligation at beginning of year	531.5	482.4
Service cost	3.9	4.6	$ 5
Interest cost	12.5	14.1	16.2
Currency	(8.1)	9.7
Actuarial (gain) loss	(12.4)	44.6
Benefit payments from plans	(23.6)	(22.3)
Plan curtailment	(0.3)	0
Settlement payments	(68.8)	(1.6)
Other	0	0
Benefit obligation at end of year	434.7	531.5	482.4
Change in Plan Assets:
Fair value of plan assets at beginning of year	464.4	424.1
Actual gain (loss) on plan assets	22	51.9
Employer contributions	5.8	6.8
Currency	(4.5)	5.5
Benefit payments	(23.6)	(22.3)
Settlement payments	(68.8)	(1.6)
Other	0	0
Fair value of plan assets at end of year	395.3	464.4	424.1
Reconciliation of Funded Status
Fair value of plan assets	395.3	464.4	424.1
Projected benefit obligation	434.7	531.5	482.4
Net liability recognized in statement of financial position	(39.4)	(67.1)
Amounts Recognized in the Consolidated Balance Sheets Consist of
Noncurrent assets	9.5	0
Current liabilities	(1.5)	(5.1)
Noncurrent liabilities	(47.4)	(62)
Net amount recognized	(39.4)	(67.1)
Post-employment Benefits Other than Pensions
Change in Benefit Obligation:
Benefit obligation at beginning of year	39.8	39.7
Service cost	1	1	1.2
Interest cost	0.6	1	1.5
Currency	(0.2)	0.3
Actuarial (gain) loss	0	2.5
Benefit payments from plans	(5.7)	(4.7)
Plan curtailment	(0.8)	0
Settlement payments	0	0
Other	0	0
Benefit obligation at end of year	34.7	39.8	39.7
Change in Plan Assets:
Fair value of plan assets at beginning of year	0	0
Actual gain (loss) on plan assets	0	0
Employer contributions	5.7	0
Currency	0	0
Benefit payments	(5.7)	0
Settlement payments	0	0
Other	0	0
Fair value of plan assets at end of year	0	0	0
Reconciliation of Funded Status
Fair value of plan assets	0	0	0
Projected benefit obligation	34.7	39.8	$ 39.7
Net liability recognized in statement of financial position	(34.7)	(39.8)
Amounts Recognized in the Consolidated Balance Sheets Consist of
Noncurrent assets	0	0
Current liabilities	(5.5)	(6)
Noncurrent liabilities	(29.2)	(33.8)
Net amount recognized	$ (34.7)	$ (39.8)

Pension and Other Post-employ_5

Pension and Other Post-employment Benefits - Amounts Recognized in AOCI and Disaggregated Information (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plan Disclosure [Line Items]
Total recognized in AOCI	$ 71.7	$ 102
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Accumulated actuarial loss	89.2	126.8
Prior service cost	0.1	0.6
Total recognized in AOCI	89.3	127.4
Assets Exceed ABO
Projected benefit obligation	323.4	0
Accumulated benefit obligation	318.9	0
Fair value of plan assets	331	0
ABO Exceeds Assets
Projected benefit obligation	111.3	531.5
Accumulated benefit obligation	111.3	527.9
Fair value of plan assets	64.3	464.4
Assets Exceed PBO
Projected benefit obligation	229.2	0
Fair value of plan assets	238.7	0
PBO Exceeds Assets
Projected benefit obligation	205.5	531.5
Fair value of plan assets	156.6	464.4
Total
Projected benefit obligation	434.7	531.5	$ 482.4
Accumulated benefit obligation	430.2	527.9
Fair value of plan assets	395.3	464.4	424.1
Post-employment Benefits Other than Pensions
Defined Benefit Plan Disclosure [Line Items]
Accumulated actuarial loss	6.6	8.8
Prior service cost	0	0
Total recognized in AOCI	6.6	8.8
Assets Exceed PBO
Projected benefit obligation	0	0
Fair value of plan assets	0	0
PBO Exceeds Assets
Projected benefit obligation	34.7	39.8
Fair value of plan assets	0	0
Total
Projected benefit obligation	34.7	39.8	39.7
Fair value of plan assets	$ 0	$ 0	$ 0

Pension and Other Post-employ_6

Pension and Other Post-employment Benefits - Components of Net Periodic Benefit Cost (Details) - USD ($) $ in Millions	1 Months Ended	12 Months Ended
	Nov. 30, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost		$ 3.9	$ 4.6	$ 5
Interest cost		12.5	14.1	16.2
Expected return on plan assets		(19.8)	(20.7)	(21.1)
Recognized net actuarial loss		4.5	5.4	4.9
Amortization of prior service cost (credit)		0.2	0.3	0.2
Curtailment loss (gain)		0.3	0	(1.6)
Settlement loss	$ 15.6	17.1	0.3	0.1
Net periodic benefit cost		18.7	4	3.7
Post-employment Benefits Other than Pensions
Defined Benefit Plan Disclosure [Line Items]
Service cost		1	1	1.2
Interest cost		0.6	1	1.5
Expected return on plan assets		0	0	0
Recognized net actuarial loss		1.4	0.9	0.9
Amortization of prior service cost (credit)		0	0	0
Curtailment loss (gain)		0	0	0
Settlement loss		0	0	0
Net periodic benefit cost		$ 3	$ 2.9	$ 3.6

Pension and Other Post-employ_7

Pension and Other Post-employment Benefits - Other Changes in Plan Assets and Benefit Obligations Recognized in OCI (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Net periodic benefit expense	$ 18.7	$ 4	$ 3.7
Accumulated actuarial gain (loss)	(37.6)	9	7.7
Prior service cost (credit)	(0.5)	(0.3)	0.2
Total recognized in other comprehensive income (loss)	(38.1)	8.7	7.9
Total recognized in net periodic benefit cost and other comprehensive income (loss)	(19.4)	12.7	11.6
Post-employment Benefits Other than Pensions
Defined Benefit Plan Disclosure [Line Items]
Net periodic benefit expense	3	2.9	3.6
Accumulated actuarial gain (loss)	(2.2)	1.6	(1.5)
Prior service cost (credit)	0	0	0
Total recognized in other comprehensive income (loss)	(2.2)	1.6	(1.5)
Total recognized in net periodic benefit cost and other comprehensive income (loss)	$ 0.8	$ 4.5	$ 2.1

Pension and Other Post-employ_8

Pension and Other Post-employment Benefits - Weighted-Average Assumptions Used to Determine Benefit Obligations (Details)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Pension Benefits
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract]
Discount rate	2.58%	2.28%
Rate of compensation increase	1.47%	1.54%
Initial healthcare cost trend rate	0.00%	0.00%
Ultimate healthcare cost trend rate	0.00%	0.00%
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Discount rate	2.53%	2.98%	3.78%
Expected long-term return on plan assets	4.90%	5.42%	5.91%
Rate of compensation increase	1.54%	2.05%	2.33%
Initial healthcare cost trend rate	0.00%	0.00%	0.00%
Ultimate healthcare cost trend rate	0.00%	0.00%	0.00%
Post-employment Benefits Other than Pensions
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract]
Discount rate	2.25%	1.67%
Rate of compensation increase	0.00%	0.00%
Initial healthcare cost trend rate	5.20%	5.25%
Ultimate healthcare cost trend rate	4.00%	4.00%
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Discount rate	1.67%	2.68%	3.84%
Expected long-term return on plan assets	0.00%	0.00%	0.00%
Rate of compensation increase	2.50%	2.50%	2.50%
Initial healthcare cost trend rate	5.25%	6.10%	6.50%
Ultimate healthcare cost trend rate	4.00%	4.50%	4.50%

Pension and Other Post-employ_9

Pension and Other Post-employment Benefits - Pension Plan Assets Allocation (Details)	Dec. 31, 2021	Dec. 31, 2020
Equity securities
Target investment allocation and permissible allocation range for plan assets
Strategic target	32.00%
Hedge fund / Other
Target investment allocation and permissible allocation range for plan assets
Strategic target	10.00%
Debt securities / Fixed Income
Target investment allocation and permissible allocation range for plan assets
Strategic target	58.00%
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Percentage of plan assets	100.00%	100.00%
Pension Benefits | Equity securities
Defined Benefit Plan Disclosure [Line Items]
Percentage of plan assets	32.00%	36.00%
Target investment allocation and permissible allocation range for plan assets
Strategic target	32.00%
Pension Benefits | Hedge fund / Other
Defined Benefit Plan Disclosure [Line Items]
Percentage of plan assets	10.00%	8.00%
Target investment allocation and permissible allocation range for plan assets
Strategic target	8.00%
Pension Benefits | Debt securities / Fixed Income
Defined Benefit Plan Disclosure [Line Items]
Percentage of plan assets	57.00%	56.00%
Target investment allocation and permissible allocation range for plan assets
Strategic target	60.00%
Pension Benefits | Cash and money-market funds
Defined Benefit Plan Disclosure [Line Items]
Percentage of plan assets	1.00%	0.00%
Minimum | Pension Benefits | Equity securities
Target investment allocation and permissible allocation range for plan assets
Strategic target	27.00%
Minimum | Pension Benefits | Hedge fund / Other
Target investment allocation and permissible allocation range for plan assets
Strategic target	3.00%
Minimum | Pension Benefits | Debt securities / Fixed Income
Target investment allocation and permissible allocation range for plan assets
Strategic target	55.00%
Maximum | Pension Benefits | Equity securities
Target investment allocation and permissible allocation range for plan assets
Strategic target	37.00%
Maximum | Pension Benefits | Hedge fund / Other
Target investment allocation and permissible allocation range for plan assets
Strategic target	13.00%
Maximum | Pension Benefits | Debt securities / Fixed Income
Target investment allocation and permissible allocation range for plan assets
Strategic target	65.00%

Pension and Other Post-emplo_10

Pension and Other Post-employment Benefits - Future Benefit Payments (Details) $ in Millions	Dec. 31, 2021USD ($)
Pension Benefits
Future service benefit payments
2022	$ 19.3
2023	20
2024	20.7
2025	21
2026	21.3
Years 2026-2030	110.4
Post-employment Benefits Other than Pensions
Future service benefit payments
2022	5.4
2023	4.4
2024	4.1
2025	3.7
2026	3.3
Years 2026-2030	$ 11.1

Stock Compensation Plans - Omni

Stock Compensation Plans - Omnibus Plan (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2004
Stock Compensation Plans
Par value of shares of common stock (in dollars per share)	$ 0.01	$ 0.01
Reduction in hares of common stock reserved for future issuance, market price in excess of exercise price (in shares)	38,926
Stock-based compensation expense and related income tax benefits
Stock-based compensation expense	$ 4.5	$ 4.2	$ 5.6
Income tax benefit	(1.1)	(1.1)	(1.4)
Stock-based compensation, net of income tax benefit	3.4	3.1	4.2
Compensation costs related to equity awards and amounts recognized
Compensation expense recognized	$ (4.5)	(4.2)	$ (5.6)
Stock options awarded
Nonqualified stock options granted (in shares)	0
Per share weighted-average grant date fair value (in dollars per share)	$ 0
Number of Stock Options
Add: options granted (in shares)	0
Stock Options
Stock Compensation Plans
Expiration period					10 years
Vesting period					3 years
Fair value assumptions
Expected term			5 years
Risk free interest rate			1.80%
Volatility			23.10%
Dividend yield			3.00%
PSUs and RSUs
Stock-based compensation expense and related income tax benefits
Stock-based compensation expense	$ 4.5
Compensation costs related to equity awards and amounts recognized
Beginning balance	3.9
Grant date fair value current year grants	6.6
Shares forfeited	(0.2)
Compensation expense recognized	(4.5)
Ending balance	$ 5.8	$ 3.9
Expected amortization period	1 year 9 months 18 days
Nonqualified stock options
Stock options awarded
Nonqualified stock options granted (in shares)	0	0	1,272
Per share weighted-average exercise price (in dollars per share)			$ 66.59
Per share weighted-average grant date fair value (in dollars per share)			$ 10.32
Number of Stock Options
Add: options granted (in shares)	0	0	1,272
Weighted-Average Exercise Price
Add: Options granted (in dollars per share)			$ 66.59
Omnibus Plan
Stock Compensation Plans
Shares of common stock reserved for future issuance (in shares)					3,500,000
Par value of shares of common stock (in dollars per share)					$ 0.01
Stock options awarded
Nonqualified stock options granted (in shares)	0
Per share weighted-average exercise price (in dollars per share)	$ 0
Number of Stock Options
Options outstanding at the beginning of the period (in shares)	380,844
Add: options granted (in shares)	0
Less: Options exercised (in shares)	15,118
Less: Options forfeited/cancelled (in shares)	4,295
Options outstanding at the end of the period (in shares)	361,431	380,844
Weighted-Average Exercise Price
Options outstanding at the beginning of the period (in dollars per share)	$ 70.99
Add: Options granted (in dollars per share)	0
Less: Options exercised (in dollars per share)	27.28
Less: Options forfeited/cancelled (in dollars per share)	75.59
Options outstanding at the end of the period (in dollars per share)	$ 72.76	$ 70.99
Omnibus Plan 2018
Stock Compensation Plans
Shares of common stock reserved for future issuance (in shares)	588,903
Additional common stock reserved for issuance subject to shareholders approval (in shares)				800,000

Stock Compensation Plans - Outs

Stock Compensation Plans - Outstanding and Exercisable Stock Options (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Options Vested or Expected to Vest
Number of options (in shares)	361,431
Weighted-average remaining contractual life	4 years 6 months
Weighted-average exercise price (in dollars per share)	$ 72.76
Aggregate intrinsic value	$ 0.4
Options Exercisable
Number of options (in shares)	359,543
Weighted-average exercise price (in dollars per share)	$ 72.87
Aggregate intrinsic value	$ 0.4
Closing market price for common stock (in dollars per share)	$ 46.28
Aggregate grant date fair value of options vested, including options subject to accelerated vesting	$ 0.2
Intrinsic value, exercises in the period	$ 0.4	$ 0.3	$ 1.2
$24.09 — $42.82
Exercise Price
Exercise price, low end of range (in dollars per share)	$ 24.09
Exercise price, high end of range (in dollars per share)	$ 42.82
Options Vested or Expected to Vest
Number of options (in shares)	38,926
Weighted-average remaining contractual life	1 year 6 months
Weighted-average exercise price (in dollars per share)	$ 36.61
Aggregate intrinsic value	$ 0.4
Options Exercisable
Number of options (in shares)	37,796
Weighted-average exercise price (in dollars per share)	$ 36.42
Aggregate intrinsic value	$ 0.4
$48.19 — $72.29
Exercise Price
Exercise price, low end of range (in dollars per share)	$ 48.19
Exercise price, high end of range (in dollars per share)	$ 72.29
Options Vested or Expected to Vest
Number of options (in shares)	109,894
Weighted-average remaining contractual life	3 years 9 months 18 days
Weighted-average exercise price (in dollars per share)	$ 58.37
Aggregate intrinsic value	$ 0
Options Exercisable
Number of options (in shares)	109,136
Weighted-average exercise price (in dollars per share)	$ 58.31
Aggregate intrinsic value	$ 0
$74.20 — $93.35
Exercise Price
Exercise price, low end of range (in dollars per share)	$ 74.20
Exercise price, high end of range (in dollars per share)	$ 93.35
Options Vested or Expected to Vest
Number of options (in shares)	212,611
Weighted-average remaining contractual life	5 years 6 months
Weighted-average exercise price (in dollars per share)	$ 86.82
Aggregate intrinsic value	$ 0
Options Exercisable
Number of options (in shares)	212,611
Weighted-average exercise price (in dollars per share)	$ 86.82
Aggregate intrinsic value	$ 0

Stock Compensation Plans - Unve

Stock Compensation Plans - Unvested Stock Options and Activity (Details)	12 Months Ended
	Dec. 31, 2021$ / sharesshares
Number of Stock Options
Outstanding at the beginning of the period (in shares) | shares	18,193
Add: options granted (in shares) | shares	0
Less: options vested (in shares) | shares	16,126
Less: options forfeited (in shares) | shares	179
Outstanding at the end of the period (in shares) | shares	1,888
Weighted-Average Grant Date Fair Value
Outstanding at the beginning of the period (in dollars per share) | $ / shares	$ 14.48
Add: options granted (in dollars per share) | $ / shares	0
Less: options vested (in dollars per share) | $ / shares	14.96
Less: options forfeited (in dollars per share) | $ / shares	15.03
Outstanding at the end of the period (in dollars per share) | $ / shares	$ 10.32

Stock Compensation Plans - Perf

Stock Compensation Plans - Performance Units/RSU (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Weighted-Average Grant Date Fair Value
Excess tax benefits from stock-based compensation	$ (0.2)	$ (0.4)	$ 0.1
Performance units
Stock Compensation Plans
Granted (in shares)	86,584	44,206	49,730
Percentage of target to be awarded, high end of range	200.00%
Common stock earned as a percentage of the performance unit target	100.00%
Market price at grant date of performance units (in dollars per share)	$ 53
Unvested stock-based awards (other than stock options)
Outstanding at the beginning of the period (in shares)	54,048	66,191	47,221
Shares granted (in shares)	86,584	44,206	49,730
Shares vested (in shares)	(1,543)	0	0
Performance shares vested (in shares)		37,804	25,833
Shares expired or cancelled (in shares)	(12,968)	(18,545)	(4,927)
Outstanding at the end of the period (in shares)	126,121	54,048	66,191
Weighted-Average Grant Date Fair Value
Outstanding at the beginning of the period (in dollars per share)	$ 62.73	$ 75.62	$ 93.21
Shares granted (in dollars per share)	54.34	63.07	69.05
Shares vested (in dollars per share)	80.15	0	0
Performance shares vested (in dollars per share)		75.60	93.21
Shares expired or cancelled (in dollars per share)	47.52	83.30	85.67
Outstanding at the end of the period (in dollars per share)	$ 58.32	$ 62.73	$ 75.62
RSUs
Stock Compensation Plans
Granted (in shares)	55,352	100,418	46,556
Unvested stock-based awards (other than stock options)
Outstanding at the beginning of the period (in shares)	82,204	44,662	53,460
Shares granted (in shares)	55,352	100,418	46,556
Shares vested (in shares)	(63,490)	(61,767)	(63,595)
Performance shares vested (in shares)		21,101	10,354
Shares expired or cancelled (in shares)	(1,441)	(22,210)	(2,113)
Outstanding at the end of the period (in shares)	72,625	82,204	44,662
Weighted-Average Grant Date Fair Value
Outstanding at the beginning of the period (in dollars per share)	$ 53.45	$ 65.23	$ 67.53
Shares granted (in dollars per share)	53.21	56.39	67.04
Shares vested (in dollars per share)	54.14	68.28	72.91
Performance shares vested (in dollars per share)		69.22	93.21
Shares expired or cancelled (in dollars per share)	59.31	64.16	69.35
Outstanding at the end of the period (in dollars per share)	$ 52.55	$ 53.45	$ 65.23
Units issued in lieu of dividends (in shares)	74	72	43
Aggregate pre-tax intrinsic value of outstanding RSUs	$ 3.4
Aggregate pre-tax intrinsic value of restricted stock and RSUs that vested during the period	$ 3.2	$ 3.4	$ 4.2
RSUs | Non-employee members of the board of directors
Stock Compensation Plans
Granted (in shares)	11,174
Market price at grant date of performance units (in dollars per share)	$ 53.21
Vesting period	1 year
Unvested stock-based awards (other than stock options)
Shares granted (in shares)	11,174
RSUs | Employees
Stock Compensation Plans
Granted (in shares)	44,178
Vesting period	3 years
Unvested stock-based awards (other than stock options)
Shares granted (in shares)	44,178

Stockholders' Equity - Common a

Stockholders' Equity - Common and Preferred Stock (Details)	12 Months Ended
	Dec. 31, 2021USD ($)seriesvote$ / sharesshares	Dec. 31, 2020USD ($)shares	Dec. 31, 2019USD ($)shares	Nov. 30, 2019USD ($)
Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Authorized shares of common stock (in shares) | shares	100,000,000	100,000,000
Voting rights per common share | vote	1
Shares acquired by the entity (in shares) | shares	19,273	22,064	17,774
Cost of shares acquired by the entity | $	$ 1,000,000	$ 1,200,000	$ 1,300,000
Preferred Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Authorized shares of preferred stock (in shares) | shares	20,000,000
Preferred stock, par value (in dollars per share) | $ / shares	$ 0.01
Minimum number of series of preferred stock to be issued | series	1
Number of preferred shares issued (in shares) | shares	0
Stock Purchase Place
Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Authorized amount of repurchase under the stock purchase plan | $				$ 25,000,000
2021 Stock Purchase Plan
Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Common stock purchased under the stock purchase plan (in shares) | shares	103,785
Cost of shares of common stock acquired | $	$ 5,000,000
2020 Stock Purchase Plan
Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Authorized amount of repurchase under the stock purchase plan | $		$ 25,000,000
Common stock purchased under the stock purchase plan (in shares) | shares		59,577
Cost of shares of common stock acquired | $		$ 3,600,000
2019 Stock Purchase Plan
Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Authorized amount of repurchase under the stock purchase plan | $			$ 25,000,000
Common stock purchased under the stock purchase plan (in shares) | shares			79,676
Cost of shares of common stock acquired | $			$ 4,900,000

Stockholder's Equity - Schedule

Stockholder's Equity - Schedule of Other Comprehensive Loss (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Stockholders' Equity Note [Abstract]
Net loss from pension and other postretirement benefit liabilities, tax benefit	$ 24.2	$ 34.2
Foreign currency translation losses, tax benefit	0.1	(0.4)
Net loss from pension and other post-employment benefit liabilities, net of income tax benefits of $24.2 million and $34.2 million, respectively	(71.7)	(102)
Unrealized foreign currency translation losses, net of income tax benefit of $0.1 million and $(0.4), respectively	(25.2)	(1.7)
AOCI	$ (96.9)	$ (103.7)

Stockholders' Equity - Changes

Stockholders' Equity - Changes in Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss), pretax amount	$ 16.3	$ 7.7	$ (9.9)
Other comprehensive income (loss), tax effect	(9.5)	1.9	1.7
Other comprehensive income (loss), net amount	6.8	9.6	(8.2)
Benefit for income taxes	4.8	2.9	(11.1)
Unrealized foreign currency translation gains (losses)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss), pretax amount	(24)	18	(3.5)
Other comprehensive income (loss), tax effect	0.5	(0.7)	0
Other comprehensive income (loss), net amount	(23.5)	17.3	(3.5)
Adjustment to pension and other benefit liabilities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss), pretax amount	40.3	(10.3)	(6.4)
Other comprehensive income (loss), tax effect	(10)	2.6	1.7
Other comprehensive income (loss), net amount	30.3	(7.7)	(4.7)
Cost of Sales and Selling General and Administrative Expenses | Reclassification out of Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income (Loss) [Line Items]
Cost of products sold and selling, general, and admin expense	6	6.6	6
Benefit for income taxes	1.4	1.7	1.5
Pension Plan Settlement Charge | Adjustment to pension and other benefit liabilities | Reclassification out of Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification from AOCI, before tax	15.7	0.3	1.3
Reclassification from AOCI, tax	$ 3.9	$ 0.1	$ 0.3

Leases - Narrative (Details)

Leases - Narrative (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020	Jan. 01, 2019
Lessee, Lease, Description [Line Items]
Lease right-of-use assets	$ 17.8	$ 20.2	$ 16
Operating lease liability	$ 19.2		$ 17
Remaining lease term (up to)	9 years
Finance lease, liability	$ 21.2
Weighted average remaining lease term, operating leases	6 years 9 months 18 days
Weighted average discount rate, operating leases	4.50%
Weighted average remaining lease term, finance leases	18 years 8 months 1 day
Weighted average discount rate, operating leases	4.30%
Maximum
Lessee, Lease, Description [Line Items]
Lease extension term	5 years
Lessee, finance lease, term of contract	20 years
Minimum
Lessee, Lease, Description [Line Items]
Lessee, finance lease, term of contract	16 years

Leases - Components of Lease Ex

Leases - Components of Lease Expense and Supplemental Cash Flow Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Operating lease cost	$ 4.4	$ 4	$ 3.1
Finance lease cost:
Amortization of ROU assets	1	0	0
Interest on lease liabilities	0.7	0	0
Total finance lease cost	1.7	0	0
Short-term lease cost	1.6	1.3	1.5
Variable lease cost	1.4	1.2	2.1
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	4.3	4	3.1
Operating cash flows from finance leases	0.7	0	0
Financing cash flows from finance leases	0.7	0	0
Right-of-use assets obtained in exchange for operating lease obligations	9.3	9.3	0.4
Right-of-use assets obtained in exchange for finance lease obligations	$ 1	$ 0	$ 0

Leases - Lease Maturity Schedul

Leases - Lease Maturity Schedule (Details) - USD ($) $ in Millions	Dec. 31, 2021	Jan. 01, 2019
Operating Leases
2022	$ 4.1
2023	3.6
2024	3.1
2025	2.6
2026	2.2
Thereafter	7.1
Total lease payments	22.7
Less: Imputed interest	3.5
Total lease liabilities	19.2	$ 17
Finance Leases
2022	1.7
2023	1.7
2024	1.7
2025	1.6
2026	1.6
Thereafter	22.2
Total lease payments	30.5
Less: Imputed interest	9.3
Total lease liabilities	$ 21.2

Commitments, Contingencies, a_3

Commitments, Contingencies, and Legal Matters (Details) $ in Millions	Dec. 31, 2021USD ($)employee
Loss Contingencies [Line Items]
Number of regular full-time employees	2,493
2022 | $	$ 5.7
2023 | $	3.8
2024 | $	3
2025 | $	$ 1.4
Workforce Subject to Collective Bargaining Arrangements Expiring within One Year
Loss Contingencies [Line Items]
Number of regular full-time employees	873
North America
Loss Contingencies [Line Items]
Number of hourly employees	952
Number of salaried employees	523
Europe
Loss Contingencies [Line Items]
Number of hourly employees	648
Number of salaried employees	370
Lowville, NY
Loss Contingencies [Line Items]
Number of regular full-time employees	84
Whiting, WI
Loss Contingencies [Line Items]
Number of regular full-time employees	192
Neenah, WI
Loss Contingencies [Line Items]
Number of regular full-time employees	213
Munising, MI
Loss Contingencies [Line Items]
Number of regular full-time employees	201

Assets Held For Sale and Impa_3

Assets Held For Sale and Impairment and Asset Restructuring Costs - Additional Information (Details) $ in Millions	Jun. 28, 2021USD ($)	Nov. 30, 2021USD ($)	Jun. 30, 2020USD ($)	Jun. 30, 2020USD ($)	Dec. 31, 2021USD ($)	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)
Restructuring Cost and Reserve [Line Items]
Impairment loss					$ 32.4	$ 54.8	$ 0
Other restructuring and non-routine costs					1.9	4.2	1.5
Elimination of deferred tax benefits due to mill closure					2.9
Asset held for sale					10.5	0	0
Liabilities of assets held for sale (Note 13)					0.5	0
Accelerated depreciation charges from idled assets					4.3	2.6	4.7
Severance costs					0.6	0.4	0
Restructuring charges included in cost of products sold					2.1
Disposal Group, Held-for-sale, Not Discontinued Operations | Appleton Mill
Restructuring Cost and Reserve [Line Items]
Asset held for sale					10.5
Liabilities of assets held for sale (Note 13)					0.5
Pension Benefits
Restructuring Cost and Reserve [Line Items]
Curtailment loss (gain)					0.3	0	(1.6)
Settlement loss		$ 15.6			17.1	0.3	0.1
Facility Closing | Appleton Mill Closure
Restructuring Cost and Reserve [Line Items]
Salvage value of assets	$ 10.5
Impairment loss	32.4
Other restructuring and non-routine costs	4.9
Elimination of deferred tax benefits due to mill closure	2.9
Facility Closing | Appleton Mill Closure | Pension Benefits
Restructuring Cost and Reserve [Line Items]
Curtailment loss (gain)	0.5				$ 0.3
Settlement loss	$ 0.3
AIM Filtertech | Corporate Joint Venture
Restructuring Cost and Reserve [Line Items]
Impairment of investment						2.5
Technical Products
Restructuring Cost and Reserve [Line Items]
Impairment losses				$ 51
Impairment of intangible assets			$ 0.4			0.4
Fine Paper and Packaging
Restructuring Cost and Reserve [Line Items]
Accelerated depreciation charges from idled assets							$ 4.7
Impairment of intangible assets			$ 0.9			0.9
Risk Free Interest Rate | Technical Products
Restructuring Cost and Reserve [Line Items]
Long-lived asset measurement input			0.095	0.095
Fine Paper Machine
Restructuring Cost and Reserve [Line Items]
Accelerated depreciation charges from idled assets						$ 2.6

Assets Held For Sale and Impa_4

Assets Held For Sale and Impairment and Asset Restructuring Costs - Schedule of Restructuring and Impairment Charges (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Restructuring and Related Activities [Abstract]
Asset held for sale	$ 10.5	$ 0	$ 0
Impairment loss	32.4	54.8	0
Restructuring charges from idled assets	4.3	2.6	4.7
Severance costs	0.6	0.4	0
Total	$ 37.3	$ 57.8	$ 4.7

Business Segment and Geograph_3

Business Segment and Geographic Information - Narrative (Details) $ in Millions	12 Months Ended
	Dec. 31, 2021USD ($)segment	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)
Business segment
Number of reportable operating segments | segment	2
Net Sales	$ 1,028.5	$ 792.6	$ 938.5
Operating income	(11.8)	(6.1)	78.3
Total assets	$ 1,081.7	806.6
Revision of Prior Period, Adjustment | Fine Paper and Packaging
Business segment
Net Sales		26.3	39.9
Operating income		(0.9)	1.3
Total assets		21
Revision of Prior Period, Adjustment | Technical Products
Business segment
Net Sales		(26.3)	(39.9)
Operating income		0.9	$ (1.3)
Total assets		$ (21)

Business Segment and Geograph_4

Business Segment and Geographic Information - Segment Information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Business segment
Net Sales	$ 1,028,500,000	$ 792,600,000	$ 938,500,000
Operating income (loss)	(11,800,000)	(6,100,000)	78,300,000
Impairment loss	32,400,000	54,800,000	0
Acquisition-related costs	200,000	1,500,000	0
Asset restructuring and impairment costs	35,200,000	57,800,000	4,700,000
Depreciation and amortization	42,700,000	36,700,000	38,900,000
Capital expenditures	28,200,000	18,900,000	21,400,000
Total assets	1,081,700,000	806,600,000
Long-lived assets	734,700,000	535,300,000
North America
Business segment
Long-lived assets	328,700,000	314,400,000
Germany
Business segment
Long-lived assets	147,400,000	160,800,000
Spain
Business segment
Long-lived assets	202,800,000	0
Rest of Europe
Business segment
Long-lived assets	55,800,000	60,100,000
Pension Benefits
Business segment
Curtailment gain (loss)	(300,000)	0	1,600,000
Unallocated corporate costs
Business segment
Operating income (loss)	(58,300,000)	(24,600,000)	(19,500,000)
Depreciation and amortization	3,000,000	2,200,000	1,600,000
Capital expenditures	3,000,000	900,000	600,000
Total assets	52,600,000	62,200,000
Unallocated corporate costs | Supplemental Employee Retirement Plan
Business segment
Restructuring costs and various other non-routine costs	37,500,000	5,600,000	300,000
Product
Business segment
Net Sales	1,028,500,000	792,600,000	938,500,000
Product | North America
Business segment
Net Sales	626,000,000	533,100,000	673,000,000
Product | Germany
Business segment
Net Sales	246,900,000	203,900,000	196,300,000
Product | Spain
Business segment
Net Sales	84,100,000	0	0
Product | Rest of Europe
Business segment
Net Sales	71,500,000	55,600,000	69,200,000
Technical Products | Operating Segments
Business segment
Operating income (loss)	5,600,000	(3,900,000)	43,300,000
Impairment loss	37,300,000	54,100,000
Acquisition-related costs	5,800,000
Non-routine costs	1,000,000	600,000	300,000
Curtailment gain (loss)	(900,000)		1,500,000
COVID-19 costs	500,000	1,300,000
Pension settlements		800,000
Depreciation and amortization	29,100,000	21,700,000	22,000,000
Capital expenditures	17,700,000	13,400,000	13,100,000
Total assets	800,700,000	531,000,000
Technical Products | Product
Business segment
Net Sales	$ 664,200,000	$ 482,600,000	$ 501,700,000
Technical Products | Product Concentration Risk | Sales
Business segment
Percentage of concentration risk	100.00%	100.00%	100.00%
Technical Products | Product Concentration Risk | Filtration | Sales
Business segment
Percentage of concentration risk	40.00%	48.00%	46.00%
Technical Products | Product Concentration Risk | Industrial Solutions | Sales
Business segment
Percentage of concentration risk	33.00%	39.00%	40.00%
Technical Products | Product Concentration Risk | Specialty Coatings | Sales
Business segment
Percentage of concentration risk	27.00%	13.00%	14.00%
Fine Paper and Packaging | Operating Segments
Business segment
Operating income (loss)	$ 40,900,000	$ 22,400,000	$ 54,500,000
Non-routine costs		2,300,000	5,700,000
COVID-19 costs	800,000	1,600,000
Pension settlements		400,000
Asset restructuring and impairment costs		3,700,000
Depreciation and amortization	10,600,000	12,800,000	15,300,000
Capital expenditures	7,500,000	4,600,000	7,700,000
Total assets	228,400,000	213,400,000
Fine Paper and Packaging | Product
Business segment
Net Sales	$ 364,300,000	$ 310,000,000	$ 436,800,000
Fine Paper and Packaging | Product Concentration Risk | Sales
Business segment
Percentage of concentration risk	100.00%	100.00%	100.00%
Fine Paper and Packaging | Product Concentration Risk | Commercial | Sales
Business segment
Percentage of concentration risk	52.00%	54.00%	61.00%
Fine Paper and Packaging | Product Concentration Risk | Consumer and packaging | Sales
Business segment
Percentage of concentration risk	48.00%	46.00%	39.00%

Business Segment and Geograph_5

Business Segment and Geographic Information - Concentrations (Details) - Sales - Customer concentration risk	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Technical Products Business' Customer Number One
Concentrations
Percentage of concentration risk	9.00%	9.00%	8.00%
Technical Products Business' Customer Number One | Technical Products
Concentrations
Percentage of concentration risk	14.00%	16.00%	15.00%
Fine Paper And Packaging Business' Customer Number One
Concentrations
Percentage of concentration risk	6.00%	6.00%	8.00%
Fine Paper And Packaging Business' Customer Number One | Fine Paper and Packaging
Concentrations
Percentage of concentration risk	17.00%	18.00%	18.00%

Supplemental Data - Advertising

Supplemental Data - Advertising and Research and Development, Accounts Receivable, Inventory, Prepaid and Other Current Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Advertising and Research Development Expenses
Advertising expense	$ 2.1	$ 3	$ 4.9
Research and development expense	8.3	7.6	$ 8.7
Accounts Receivable - net
From customers	143.9	101.7
Less allowance for doubtful accounts and sales discounts	(1.6)	(1.5)
Total	142.3	100.2
Inventories by Major Class:
Raw materials	54.7	28.9
Work in progress	32.6	20.1
Finished goods	64	61
Supplies and other	3.8	5.3
Inventories, gross	155.1	115.3
Excess of FIFO over LIFO cost	(16.6)	(6.4)
Total	138.5	108.9
FIFO values of inventories valued on the LIFO method	95.4	88.5
Decrease in LIFO inventory quantities	0.1	0.1
Prepaid and Other Current Assets
Prepaid and other current assets	14.9	10.6
Spare parts	7.4	6.4
Receivable for income taxes	9.5	8.1
Total	$ 31.8	$ 25.1

Supplemental Data - Property, P

Supplemental Data - Property, Plant, and Equipment, Accrued Expense, Noncurrent Liabilities (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment - Net
Gross property, plant and equipment	$ 796.8	$ 812.8
Less accumulated depreciation	501.3	483.4
Net Property, Plant and Equipment	295.5	329.4
Depreciation expense	30.8	31.5	$ 33.9
Interest expense capitalized	0.2	0.3	$ 0.2
Accrued Expenses
Accrued salaries and employee benefits	25.8	34
Amounts due to customers	12.1	8.4
Accrued income taxes	9.1	5.5
Accrued utilities	4.7	3.4
Other	14.9	10.6
Total	66.6	61.9
Noncurrent Employee Benefits
Pension benefits	47.4	62
Post-employment benefits other than pensions	30.3	34.8
Total	77.7	96.8
Supplemental RCP benefits	0.9	0.8
Other long term benefits	0.2	0.2
Land and land improvements
Property, Plant and Equipment - Net
Gross property, plant and equipment	18.9	20.5
Buildings
Property, Plant and Equipment - Net
Gross property, plant and equipment	151.2	160
Machinery and equipment
Property, Plant and Equipment - Net
Gross property, plant and equipment	610.4	614.9
Construction in progress
Property, Plant and Equipment - Net
Gross property, plant and equipment	$ 16.3	$ 17.4

Supplemental Data - Supplementa

Supplemental Data - Supplemental Cash Flow Data (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Supplemental Disclosure of Cash Flow Information
Cash paid during the year for interest, net of interest expense capitalized	$ 15.1	$ 12.3	$ 10.9
Cash paid during the year for income taxes, net of refunds	12.2	3.6	13.3
Non-cash investing activities:
Liability for equipment acquired	5.8	3.3	3.2
Net cash provided by (used in) changes in working capital
Accounts receivable	(26.2)	4.5	11.6
Inventories	(8.1)	15.7	8.2
Income taxes receivable/payable	(1)	(1.4)	(5.4)
Prepaid and other current assets	(3.9)	(0.2)	2.4
Accounts payable	28.7	(3.6)	(14)
Accrued expenses	5.2	3.2	(3.4)
Total	$ (5.3)	$ 18.2	$ (0.6)

SCHEDULE II SCHEDULE OF VALUA_2

SCHEDULE II SCHEDULE OF VALUATION AND QUALIFYING ACCOUNTS (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Movement in valuation and qualifying accounts
Write-offs and Reclassifications			$ 0
Allowance for doubtful accounts receivable
Movement in valuation and qualifying accounts
Balance at Beginning of Period	$ 1.1	$ 1	0.8
Charged to Costs and Expenses	(0.2)	0.5	0.5
Charged to Other Accounts	0.3	0	0
Write-offs and Reclassifications	0	(0.4)	(0.3)
Balance at End of Period	1.2	1.1	1
Allowance for sales discounts
Movement in valuation and qualifying accounts
Balance at Beginning of Period	0.4	0.4	0.5
Charged to Costs and Expenses	0	0	0
Charged to Other Accounts	0	0	(0.1)
Write-offs and Reclassifications	0	0
Balance at End of Period	0.4	0.4	0.4
Valuation allowance for deferred income tax assets
Movement in valuation and qualifying accounts
Balance at Beginning of Period	10.4	5.8	2.7
Charged to Costs and Expenses	2.4	4.6	0
Charged to Other Accounts	0	0	3.1
Write-offs and Reclassifications	(0.3)	0	0
Balance at End of Period	$ 12.5	$ 10.4	$ 5.8