Clearwater Paper (CLW) 10-Q 6 Aug 24 2024 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2024	Aug. 05, 2024
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Amendment Flag	false
Document Period End Date	Jun. 30, 2024
Entity File Number	001-34146
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q2
Entity Registrant Name	CLEARWATER PAPER CORPORATION
Entity Central Index Key	0001441236
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	20-3594554
Entity Address, Address Line One	601 West Riverside,
Entity Address, Address Line Two	Suite 1100
Entity Address, City or Town	Spokane,
Entity Address, State or Province	WA
Entity Address, Postal Zip Code	99201
Current Fiscal Year End Date	--12-31
Title of 12(b) Security	Common Stock, par value $0.0001 per share
Trading Symbol	CLW
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Shell Company	false
Entity Emerging Growth Company	false
Entity Small Business	false
Document Transition Report	false
Entity Common Stock, Shares Outstanding		16,632,041
Local Phone Number	344-5900
City Area Code	509

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 39.6	$ 42
Receivables, Net	255.8	184.5
Inventories	420.2	319.8
Other current assets	18.3	17.9
Total current assets	733.9	564.1
Property, Plant and Equipment, Net	1,605.1	990.1
Goodwill and intangible assets	54.1	41.5
Other assets, net	85.3	76.1
TOTAL ASSETS	2,478.4	1,671.8
Current liabilities:
Current portion of long-term debt	5.2	0.8
Accounts payable and accrued liabilities	418.1	285.1
Total current liabilities	423.3	286
Long-term debt	1,137.9	462.3
Liability for pension and other postretirement employee benefits	54.7	55.7
Deferred tax liabilities and other long-term obligations	204	199.1
Total liabilities	1,819.8	1,003
Stockholders' equity:
Preferred Stock, Value, Issued	0	0
Common Stock, Value, Issued	0	0
Additional paid-in capital	13.5	14.9
Retained earnings	675.8	684.5
Accumulated other comprehensive loss, net of tax	(30.7)	(30.7)
Total stockholders' equity	658.6	668.8
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 2,478.4	$ 1,671.8

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Jun. 30, 2024	Dec. 31, 2023
Statement of Financial Position [Abstract]
Preferred stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Preferred Stock, Shares Authorized	5,000,000	5,000,000
Preferred stock, shares issued (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Common stock, authorized (in shares)	100,000,000	100,000,000
Common stock, shares issued (in shares)	16,641,910	16,484,550

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Income Statement [Abstract]
Net Sales	$ 586.4	$ 524.6	$ 1,082.6	$ 1,050
Costs and expenses:
Cost of sales	550.8	438.7	972.5	887.2
Selling, General and Administrative Expense	38	39.1	74.3	75.1
Other Operating Income (Expense), Net	(17)	0.4	(25)	(0.6)
Total operating costs and expenses	605.9	477.3	1,071.7	962.9
Income (loss) from operations	(19.5)	47.3	10.9	87.1
Interest Expense, Net	(16)	(7.5)	(22.6)	(15.1)
Other Nonoperating Income (Expense)	0.3	0.1	0.7	0.2
Total non-operating expense	(15.7)	(7.4)	(21.9)	(14.9)
Income (loss) before income taxes	(35.2)	39.9	(11)	72.2
Income tax provision (benefit)	(9.4)	10.2	(2.4)	18.6
Net income (loss)	$ (25.8)	$ 29.7	$ (8.6)	$ 53.5
Net income (loss) per common share:
Basic (in dollars per share)	$ (1.55)	$ 1.76	$ (0.52)	$ 3.18
Diluted (in dollars per share)	$ (1.55)	$ 1.75	$ (0.52)	$ 3.15
Weighted Average Number of Shares Outstanding, Basic	16,661	16,865	16,634	16,849
Weighted Average Number of Shares Outstanding, Diluted	16,661	16,958	16,634	17,003

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Statement of Comprehensive Income [Abstract]
Net income	$ (25.8)	$ 29.7	$ (8.6)	$ 53.5
Defined benefit pension and other postretirement employee benefits:
Amortization of actuarial gain included in net periodic cost, net of tax	0	(0.1)	(0.1)	(0.1)
Other comprehensive income (loss), net of tax	0	(0.1)	(0.1)	(0.1)
Comprehensive income (loss)	$ (25.8)	$ 29.6	$ (8.7)	$ 53.4

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024		Jun. 30, 2023
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ (25.8)	$ 29.7	$ (8.6)		$ 53.5
Depreciation and amortization	30.9	24.6	54.1		49.4
Equity-based compensation expense	4.7	1.5	8.1		3.4
Deferred taxes	(3.5)	(1.6)	(5.1)		(2.9)
Defined benefit pension and other postretirement employee benefits	(0.8)	(0.6)	(1.7)		(1.1)
Amortization of Debt Issuance Costs	0.7	0.3	1.1		0.6
Loss on sale or impairment associated with assets	0.7	0	0.8		1.1
Increase in accounts receivable	(65.6)	(7.7)	(57.8)		(14.1)
(Increase) decrease in inventories	9.2	5.3	1		(17)
(Increase) decrease in other current assets	2.3	5.4	0		5.8
Increase (decrease) in accounts payable and accrued liabilities	69.4	(10.7)	89.9		(42.5)
Other Operating Activities, Cash Flow Statement	(1.2)	(0.1)	(1.5)		0.6
Net cash flows provided by operating activities	21.1	46	80.3		36.9
CASH FLOWS FROM INVESTING ACTIVITIES
Additions to property, plant and equipment, net 1	(18.1)	(12.8)	(36.6)	[1]	(34.3)	[1]
Payments to Acquire Businesses, Net of Cash Acquired	(708.2)	0	(708.2)		0
Net cash flows used in investing activities	(726.3)	(12.8)	(744.8)		(34.3)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from (Repayments of) Other Long-Term Debt	726.7	0	723.5		12
Repayments of long-term debt	(30.3)	(0.2)	(50.5)		(12.5)
Payments for Repurchase of Common Stock	(3)	(8.4)	(3.5)		(10.1)
Payments of Debt Issuance Costs	(4.1)	0	(4.5)		(0.1)
Proceeds from (Payments for) Other Financing Activities	0.2	(0.4)	(2.9)		(4.6)
Net cash flows provided by (used in) financing activities	689.6	(8.9)	662.1		(15.3)
Increase (decrease) in cash, cash equivalents	(15.6)	24.3	(2.4)		(12.7)
Cash and cash equivalents at beginning of period	55.2	17.4	42		54.4
Cash and cash equivalents at end of period	39.6	41.7	39.6		41.7
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:
Cash paid for interest, net of amounts capitalized	8	0.8	17.8		15.4
Income Taxes Paid, Net	$ 15.2	$ 15.1	$ 15.4		$ 15.1
[1] Capital expenditures of $35.1 million and $14.0 million that have not been paid as of June 30, 2024 and 2023 were excluded from the Statements of Cash Flows.

Consolidated Statements of Stoc

Consolidated Statements of Stockholder's Equity Consolidated Statements of Stockholder's Equity - USD ($) shares in Thousands, $ in Millions	Total	Common Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Loss
Beginning balance (in shares) at Dec. 31, 2022		16,762
Beginning balance at Dec. 31, 2022	$ 572.1	$ 0	$ 28.5	$ 576.8	$ (33.3)
Net income	23.8			23.8
Stock-based compensation expense	2.2		2.2
Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture		242
Issuance of shares under stock plans, net	(4.2)		(4.2)
Pension and other postretirement employee benefit plans, net of tax	(0.1)				(0.1)
Stock Repurchased and Retired During Period, Shares		(51)
Stock Repurchased and Retired During Period, Value	(1.7)		(1.7)
Ending balance (in shares) at Mar. 31, 2023		16,953
Ending balance at Mar. 31, 2023	592	$ 0	24.7	600.6	(33.4)
Beginning balance (in shares) at Dec. 31, 2022		16,762
Beginning balance at Dec. 31, 2022	572.1	$ 0	28.5	576.8	(33.3)
Net income	53.5
Ending balance (in shares) at Jun. 30, 2023		16,708
Ending balance at Jun. 30, 2023	614.5	$ 0	17.7	630.3	(33.4)
Beginning balance (in shares) at Mar. 31, 2023		16,953
Beginning balance at Mar. 31, 2023	592	$ 0	24.7	600.6	(33.4)
Net income	29.7			29.7
Stock-based compensation expense	1.7		1.7
Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture		18
Issuance of shares under stock plans, net	(0.4)		(0.4)
Pension and other postretirement employee benefit plans, net of tax	$ (0.1)				(0.1)
Stock Repurchased and Retired During Period, Shares	(263)
Stock Repurchased and Retired During Period, Value	$ (8.4)		(8.4)
Ending balance (in shares) at Jun. 30, 2023		16,708
Ending balance at Jun. 30, 2023	614.5	$ 0	17.7	630.3	(33.4)
Beginning balance (in shares) at Dec. 31, 2023		16,485
Beginning balance at Dec. 31, 2023	668.8	$ 0	14.9	684.5	(30.7)
Net income	17.2			17.2
Stock-based compensation expense	2.2		2.2
Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture		175
Issuance of shares under stock plans, net	(3.1)		(3.1)
Stock Repurchased and Retired During Period, Shares		(13)
Stock Repurchased and Retired During Period, Value	(0.5)		(0.5)
Ending balance (in shares) at Mar. 31, 2024		16,647
Ending balance at Mar. 31, 2024	684.5	$ 0	13.5	701.7	(30.7)
Beginning balance (in shares) at Dec. 31, 2023		16,485
Beginning balance at Dec. 31, 2023	668.8	$ 0	14.9	684.5	(30.7)
Net income	(8.6)
Ending balance (in shares) at Jun. 30, 2024		16,642
Ending balance at Jun. 30, 2024	658.6	$ 0	13.5	675.8	(30.7)
Beginning balance (in shares) at Mar. 31, 2024		16,647
Beginning balance at Mar. 31, 2024	684.5	$ 0	13.5	701.7	(30.7)
Net income	(25.8)			(25.8)
Stock-based compensation expense	2.8		2.8
Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture		59
Issuance of shares under stock plans, net	0.2		0.2
Stock Repurchased and Retired During Period, Shares		(64)
Stock Repurchased and Retired During Period, Value	(3)		(3)
Ending balance (in shares) at Jun. 30, 2024		16,642
Ending balance at Jun. 30, 2024	$ 658.6	$ 0	$ 13.5	$ 675.8	$ (30.7)

Basis of Presentation

Basis of Presentation	6 Months Ended
	Jun. 30, 2024
Accounting Policies [Abstract]
Nature of Operations and Basis of Presentation	Basis of Presentation The accompanying unaudited consolidated financial statements have been prepared in accordance with the instructions to Form 10-Q and, in the opinion of management, include all adjustments (consisting of normal recurring adjustments) necessary to present fairly, in all material respects, the consolidated financial position, results of operations, stockholders' equity and cash flows for us and our subsidiaries for the interim periods presented. Results of operations for interim periods are not necessarily indicative of results to be expected for an entire year. These consolidated financial statements should be read in conjunction with the consolidated financial statements and the notes thereto included in our Annual Report on Form 10-K for the year ended December 31, 2023. All dollar amounts are shown in millions, except per share.

Recently Adopted and New Accoun

Recently Adopted and New Accounting Standards New Accounting Pronouncements (Notes)	3 Months Ended
	Jun. 30, 2024
Accounting Standards Update and Change in Accounting Principle [Abstract]
New Accounting Pronouncements and Changes in Accounting Principles [Text Block]	Recently Issued Accounting Standards In December 2023, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2023-09, Income Taxes— Improvements to Income Tax Disclosures (Topic 740) , which requires enhanced disclosures primarily related to the rate reconciliation and disaggregation of income taxes paid. This ASU is effective for annual periods beginning after December 15, 2024, with early adoption permitted. Adoption of this ASU will result in additional disclosure, but it will not impact our consolidated financial position, results of operations or cash flows. In November 2023, the FASB issued ASU No. 2023-07, Segment Reporting— Improvements to Reportable Segment Disclosures (Topic 280) . This standard requires enhanced disclosures of segment expenses as well as additional information provided to the Chief Operating Decision Maker. This ASU is effective for annual periods beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024. The amendments in this ASU should be applied retrospectively to all prior periods presented in the financial statements, with early adoption permitted. Adoption of this ASU will result in additional disclosure, but it will not impact our consolidated financial position, results of operations or cash flows.

Business Combinations and Asset

Business Combinations and Asset Acquisitions	6 Months Ended
	Jun. 30, 2024
Business Combination, Asset Acquisition, and Joint Venture Formation [Abstract]
Business Combination Disclosure	Business Acquisition On May 1, 2024, we completed the acquisition of a paperboard manufacturing facility and associated business, located in Augusta, Georgia (Augusta) from Graphic Packaging International, LLC (Augusta Acquisition). The acquisition is being accounted for under Financial Accounting Standards Board (FASB) Accounting Standards Codification (ASC) 805, Business Combination as a business combination as opposed to an asset acquisition. We used borrowings under our credit facilities to fund the acquisition. This acquisition strengthens our position as a premier, independent supplier of paperboard products to converters through improved scale and cost structure. This acquisition is reported within our Pulp and Paperboard segment. The purchase price of the Augusta Acquisition was allocated to assets acquired and liabilities assumed based on the estimated fair values as of the date of acquisition. The excess of the purchase price over the fair value of the net assets acquired was allocated to goodwill, which is expected to be deductible for tax purposes. The allocation of the purchase price shown below remains preliminary and is subject to further adjustment, pending additional refinement and final completion of valuations, including but not limited to valuations of property, plant and equipment. Goodwill is primarily attributed to synergies from future expected economic benefits, including enhanced revenue growth as well as cost savings from reduction of duplicative overhead, streamlined operations and enhanced operational efficiency. The purchase price allocation as of May 1, 2024 is as follows: Purchase price $ 708.2 Inventory 102.8 Other current assets 0.4 Property, plant and equipment 609.3 Other assets, net 11.8 Total assets acquired 724.3 Current portion of long-term debt (0.6) Accounts payable and accrued liabilities (7.7) Long-term debt (8.9) Other long-term obligation (12.6) Total liabilities assumed (29.7) Net assets acquired 694.5 Goodwill 13.7 Total estimated fair value of net assets acquired $ 708.2 The Consolidated Statements of Operations includes $81.2 million of Net Sales and $5.8 million of Net Loss for the quarter and six months ended June 30, 2024. The following unaudited pro forma consolidated financial information for the quarter and six months ended June 30, 2024 combines our results and the unaudited results of the Augusta operations for the corresponding periods. The unaudited pro forma consolidated financial information assumes that the Augusta Acquisition, which closed on May 1, 2024, was completed on January 1, 2023. The pro forma consolidated financial information has been calculated after applying our accounting policies and includes adjustments to reduce previous recorded amortization expense, fair value adjustments for acquired inventory, property, plant and equipment and operating leases. The impact to depreciation expense was de minimis due to the valuation step up being offset by increased useful lives. These pro forma results have been prepared for comparative purposes only and do not purport to be indicative of our operating results that would have been achieved had the Augusta Acquisition actually taken place on January 1, 2023. In addition, these results are not intended to be a projection of future results and do not reflect events that may occur after the Augusta Acquisition, including but not limited to revenue enhancements, cost savings or operating synergies that we may achieve as a result of the Augusta Acquisition. Quarter Ended June 30, Six Months Ended June 30, 2024 2023 2024 2023 Net sales $ 650.1 $669.6 $ 1,271.4 $1,383.2 Net income (loss) (23.2) 25.3 (21.9) 65.9

Receivables, net (Notes)

Receivables, net (Notes)	6 Months Ended
	Jun. 30, 2024
Receivables, Net, Current [Abstract]
Loans, Notes, Trade and Other Receivables Disclosure [Text Block]	Receivables Receivables consist of: June 30, 2024 December 31, 2023 Trade accounts receivable $ 230.7 $ 173.8 Allowance for current expected credit losses (1.9) (1.5) Unbilled receivables 3.9 4.1 Taxes receivable 18.1 4.8 Other 4.9 3.1 $ 255.8 $ 184.5

Inventories

Inventories	6 Months Ended
	Jun. 30, 2024
Inventory Disclosure [Abstract]
Inventories	Inventories Inventories are stated at the lower of net realizable value or current cost using the average cost method and consist of: June 30, 2024 December 31, 2023 Logs, chips and sawdust $ 28.0 $ 22.1 Pulp 20.2 16.8 Paperboard and tissue products 202.8 156.8 Materials and supplies 169.3 124.1 $ 420.2 $ 319.8

Property, Plant, and Equipment

Property, Plant, and Equipment	6 Months Ended
	Jun. 30, 2024
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment Disclosure	Property, Plant and Equipment Property, plant and equipment consist of: June 30, 2024 December 31, 2023 Land and land improvements $ 126.7 $ 106.0 Buildings and improvements 513.9 461.0 Machinery and equipment 2,889.2 2,359.9 Construction in progress 111.2 53.0 3,641.0 2,979.8 Less accumulated depreciation and amortization (2,035.9) (1,989.7) Property, plant and equipment, net $ 1,605.1 $ 990.1

Intangible Assets, Goodwill and

Intangible Assets, Goodwill and Other	6 Months Ended
	Jun. 30, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets Disclosure	Goodwill and Intangibles Changes in the carrying amounts of goodwill and intangible assets allocated to the pulp and paperboard segment as follows: Pulp and Paperboard Goodwill Intangibles Total Balance as of December 31, 2023 35.1 6.4 41.5 Recognized goodwill 13.7 — 13.7 Amortization — (1.1) (1.1) Balance as of June 30, 2024 $ 48.8 $ 5.4 $ 54.1 Intangible assets consisted of $5.4 million customer relationships. Outstanding definite-lived intangible assets are amortized over their useful lives of 10 years. The gross book value and accumulated amortization of definite lived intangible assets at June 30, 2024 was $34.9 million and $29.5 million. The gross book value and accumulated amortization of definite lived intangible assets at December 31, 2023 was $34.9 million and $28.4 million.

Payables and Accruals

Payables and Accruals	6 Months Ended
	Jun. 30, 2024
Payables and Accruals [Abstract]
Accounts Payable and Accrued Liabilities Disclosure	Accounts Payable and Accrued Liabilities Accounts payable and accrued liabilities consist of: June 30, 2024 December 31, 2023 Trade payables $ 278.8 $ 163.9 Accrued compensation 39.1 39.0 Operating lease liabilities 17.4 15.4 Other 82.9 66.9 $ 418.1 $ 285.1 Included in "Accounts payable and accrued liabilities" are $35.1 million and $13.0 million related to capital expenditures that had not yet been paid as of June 30, 2024 and December 31, 2023. We maintain a program with a financial institution to provide our vendors with an option to receive payment earlier than our standard payment terms. As of June 30, 2024 and December 31, 2023, $15.1 million and $14.7 million of outstanding obligations under this program were included in "Other" in the table above. As of June 30, 2024 and December 31, 2023, unrecognized tax benefits, including associated interest, of $28.5 million and $27.4 million were included in "Other" in the table above.

Income Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2024
Income Tax Disclosure [Abstract]
Taxes	Income Taxes For interim periods, accounting standards require that income tax expense be determined by applying the estimated annual effective income tax rate to year-to-date results, unless this method does not result in a reliable estimate of year-to-date income tax expense. Each period, the income tax accrual is adjusted to the latest estimate and the difference from the previously accrued year-to-date balance is adjusted to the current quarter.

Debt

Debt	6 Months Ended
	Jun. 30, 2024
Debt Disclosure [Abstract]
Debt Disclosure	Debt Long-term debt at the balance sheet dates consisted of: June 30, 2024 December 31, 2023 Interest Rate at June 30, 2024 Principal Unamortized Debt Costs Total Principal Unamortized Debt Costs Total Term Revolving Facility under Term loan Credit Agreement maturing 2029, fixed interest rate 9.1% $ 150.0 $ (2.5) $ 147.5 $ 150.0 $ (2.8) $ 147.2 Term Revolving Facility under Term Loan Credit Agreement maturing 2029, variable interest rate 9.1% $ 120.0 $ — $ 120.0 $ — $ — $ — Farm Credit Term Loan Facility under Term Loan Credit Agreement maturing 2031, variable interest rate 9.1% 394.8 (2.7) 392.1 — — — Commercial Bank Term Loan Facility under Term Loan Credit Agreement, maturing 2029, variable interest rate 8.6% 88.8 (0.6) 88.2 — — — 2020 Notes, maturing 2028, fixed interest rate 4.8% 275.0 (2.1) 272.9 275.0 (2.4) 272.6 Revolving loan facility under ABL Credit Agreement, maturing 2027, variable interest rate 6.9% 90.0 — 90.0 20.0 — 20.0 Finance leases 32.2 — 32.2 23.3 — 23.3 Total debt 1,150.9 (7.8) 1,143.0 468.3 (5.1) 463.1 Less: current portion (5.6) 0.5 (5.2) (0.8) — (0.8) Net long-term portion $ 1,145.2 $ (7.4) $ 1,137.9 $ 467.4 $ (5.1) $ 462.3 TERM CREDIT AGREEMENTS On May 1, 2024, the Company entered into an amendment and restatement of our Credit Agreement, dated October 27, 2023, with AgWest Farm Credit, PCA, as administrative agent, and several lenders (as so amended and restated, the “Term Credit Agreement”). After giving effect to the amendment and restatement, the credit facilities provided under the Term Credit Agreement consist of (i) a term revolver loan commitment in the amount of $270 million (the “Term Revolver Facility”), $150 million of which was borrowed on October 27, 2023 and $120 million of which was borrowed on May 1, 2024, (ii) a term loan commitment in the amount of $400 million (the “Farm Credit Term Loan Facility”), which was fully drawn on May 1, 2024 and (iii) a term loan commitment in the amount of $90 million (the “Commercial Bank Term Loan Facility” and together with the Farm Credit Term Loan Facility, collectively, the “Term Loan Facilities”), which was fully drawn on May 1, 2024. We may increase commitments under the Term Revolver Facility in an aggregate principal amount of up to $60 million, subject to obtaining commitments from participating lenders. The Term Credit Agreement matures on the earlier of (i) in the case of the Term Revolver Facility and the Commercial Bank Term Loan Facility, May 1, 2029, (ii) in the case of the Farm Credit Term Loan Facility, May 1, 2031 and (iii) and subject to springing maturity 91 days prior to the maturity of the 2020 Notes, if the outstanding principal amount of the 2020 Notes plus $50 million is less than our available borrowing liquidity and unrestricted cash. We may prepay and reborrow the borrowings under the Term Revolver Facility, in whole or in part, at any time and from time to time without premium or penalty (other than prepayments of the initial advance on the Term Revolver Facility of $150 million to the extent made prior to November 1, 2024 and in certain other circumstances). In addition, we must make mandatory prepayments of principal under the Term Revolver Facility upon the occurrence of certain asset sales. We are required to repay a percentage of the aggregate outstanding principal amount of the borrowings under the Term Loan Facilities in quarterly installments on the last day of each March, June, September and December, commencing on the first day of the third full fiscal quarter after May 1, 2024. We may prepay any borrowings under the Term Loan Facilities, in whole or in part, at any time and from time to time without premium or penalty. In addition, we must make mandatory prepayments of principal under the Term Loan Facilities upon the occurrence of certain specified events, including certain asset sales (as disclosed in Note 19), debt issuances not permitted under the Term Credit Agreement, and of 50% of our quarterly excess cash flows, less any voluntary prepayments of the Term Loan Facilities. ABL CREDIT AGREEMENT On May 1, 2024, the Company entered into an amendment (the “ABL Amendment”) of its Credit Agreement, dated July 26, 2019, with JPMorgan Chase Bank, N.A., as administrative agent and several lenders (as so amended, the “ABL Credit Agreement”). After giving effect to the ABL Amendment, the maximum commitment of the lenders (subject to borrowing base limitations) under the ABL Credit Agreement was increased from $275 million to $375 million, $120 million of which was borrowed as of May 1, 2024 and $3.7 million of which was utilized for outstanding but undrawn letters of credit. At June 30, 2024, we were in compliance with the currently applicable covenants associated with the Term Credit Agreement and the ABL Credit Agreement. The fair value of our debt is included in the following table: June 30, 2024 December 31, 2023 Farm Credit Term Loan Facility under Term Credit agreement, maturing 2031, variable interest rate $ 400.0 $ — 2020 Notes, maturing 2028, fixed interest rate 255.1 255.1 Term Revolver Facility under Term Credit Agreement, maturing 2029, fixed interest rate 150.0 150.6 Term Revolver Facility under Term Credit Agreement, maturing 2029, variable interest rate 120.0 — Commercial Bank Term Loan Facility under Term Credit Agreement, maturing 2029, variable interest rate 90.0 — Revolving loan facility under ABL Credit Agreement, maturing 2027, variable interest rate 90.0 20.0 $ 1,105.1 $ 425.7

Other Operating Charges, net (N

Other Operating Charges, net (Notes)	6 Months Ended
	Jun. 30, 2024
Other Income and Expenses [Abstract]
Other Operating Income and Expense	Other Operating Charges The major components of “Other operating (income) charges, net” in the Consolidated Statements of Operations for the quarter and six months ended June 30, 2024 and 2023 are reflected in the table below and described in the paragraphs following the table. These items are considered outside of our core operations. Quarter Ended June 30, Six Months Ended June 30, 2024 2023 2024 2023 Acquisition and divestiture related costs $ 10.3 $ — $ 14.5 $ — Integration costs 4.1 — 6.5 — Loss on sale or impairment associated with assets 0.7 — 0.8 1.1 Directors' equity-based compensation expense 2.0 (0.2) 3.1 (0.4) Other — (0.3) — (0.1) $ 17.0 $ (0.4) $ 25.0 $ 0.6 2024 During the second quarter of 2024, we recorded $17.0 million of expense in "Other operating (income) charges, net." The main components of the expense include: • expense of $10.3 million associated with acquisition and divestiture activities (primarily legal and professional services); • expense of $4.1 million associated with integration activities (primarily professional services); • loss of $0.7 million associated with the impairment of property, plant and equipment; and • expense of $2.0 million relating to directors' equity-based compensation which is remeasured each period based upon changes in our stock price. During the first quarter of 2024, we recorded $7.9 million of expense in "Other operating (income) charges, net." The main components of the expense include: • expense of $4.2 million associated with acquisition and divestiture activities (primarily legal and professional services); • expense of $2.3 million associated with integration activities (primarily professional services); • loss of $0.2 million associated with the impairment of equipment and related spare parts no longer being used; and • expense of $1.2 million relating to directors' equity-based compensation which is remeasured each period based upon changes in our stock price. 2023 During the second quarter of 2023, we recorded $0.4 million of income in "Other operating (income) charges, net." The components of the expense include: • reversal of expense of $0.2 million relating to directors' equity-based compensation which is remeasured each period based upon changes in our stock price. During the first quarter of 2023, we recorded $1.1 million of expenses in "Other (income) operating charges, net." The components of the expense include: • loss of $1.1 million associated with the impairment of equipment and related spare parts no longer being used; and • reversal of expense of $0.2 million relating to directors' equity based compensation which is remeasured each period based upon changes in our stock price.

Non-operating Income (Expense)

Non-operating Income (Expense) (Notes)	6 Months Ended
	Jun. 30, 2024
Nonoperating Income (Expense) [Abstract]
Other Nonoperating Income and Expense [Text Block]	Non-Operating Expense The components of “Non-operating expense” in the Consolidated Statements of Operations for the quarter and six months ended June 30, 2024 and 2023 are reflected in the table below: Quarter Ended June 30, Six Months Ended June 30, 2024 2023 2024 2023 Interest expense $ (16.1) $ (7.6) $ (22.8) $ (15.2) Amortization of debt issuance costs and accretion of debt discount (0.7) (0.3) (1.1) (0.6) Interest income 0.8 0.3 1.4 0.6 Interest expense, net (16.0) (7.5) (22.6) (15.1) Non-operating pension and other postretirement employee benefits 0.3 0.1 0.7 0.2 Total non-operating expense $ (15.7) $ (7.4) $ (21.9) $ (14.9)

Retirement Plans and Postretire

Retirement Plans and Postretirement Benefits	6 Months Ended
	Jun. 30, 2024
Postemployment Benefits [Abstract]
Pension and Other Postretirement Employee Benefit Plans	Retirement Plans and Postretirement Benefits The following table details the components of net periodic cost of our company-sponsored pension and other postretirement employee benefit plans for the periods presented: Quarter Ended June 30, Six Months Ended June 30, Pension Benefit Plans 2024 2023 2024 2023 Service cost $ 0.6 $ 0.9 $ 1.3 $ 1.7 Interest cost 3.0 3.1 5.9 6.2 Expected return on plan assets (3.9) (3.8) (7.9) (7.6) Net periodic cost $ (0.3) $ 0.2 $ (0.6) $ 0.4 Quarter Ended June 30, Six Months Ended June 30, Other Postretirement Employee Benefit Plans 2024 2023 2024 2023 Service cost $ 0.1 $ — $ 0.1 $ 0.1 Interest cost 0.7 0.7 1.3 1.4 Amortization of actuarial gain (0.1) (0.1) (0.1) (0.3) Net periodic cost $ 0.6 $ 0.6 $ 1.3 $ 1.2

Accumulated Other Comprehensive

Accumulated Other Comprehensive Loss (Notes)	6 Months Ended
	Jun. 30, 2024
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]	Accumulated Other Comprehensive Loss Accumulated other comprehensive loss, net of tax, is comprised of the following: Pension Plan Adjustments Other Post Retirement Employee Benefit Plan Adjustments Total Balance at December 31, 2022 $ (46.5) $ 13.3 $ (33.3) Amounts reclassified from accumulated other comprehensive loss — (0.1) (0.1) Balance at June 30, 2023 $ (46.5) $ 13.1 $ (33.4) Balance at December 31, 2023 $ (42.0) $ 11.3 $ (30.7) Amounts reclassified from accumulated other comprehensive loss 0.1 (0.1) (0.1) Balance at June 30, 2024 $ (41.9) $ 11.2 $ (30.7)

Stockholders' Equity

Stockholders' Equity	6 Months Ended
	Jun. 30, 2024
Share-Based Payment Arrangement [Abstract]
Equity-Based Compensation	Stockholders' Equity Common Stock Plans We have stock-based compensation plans under which restricted stock awards and stock options are outstanding or granted subject to time or performance vesting requirements. At June 30, 2024, approximately 0.5 million shares were available for future issuance under our current plan. Quarter Ended June 30, Six Months Ended June 30, 2024 2023 2024 2023 Total stock-based compensation expense $ 4.7 $ 1.5 $ 8.1 $ 3.4 Income tax benefit related to stock-based compensation $ 1.0 $ 0.4 $ 1.3 $ 0.9 Impact on cash flow from proceeds on options exercised $ 1.1 $ — $ 1.1 $ — Impact on cash flow due to taxes paid related to net share settlement of equity awards $ 0.8 $ 0.4 $ 3.9 $ 4.6 At June 30, 2024, there was $19.0 million of total unrecognized compensation costs related to outstanding restricted stock unit awards. During the six months ended June 30, 2024, we granted 221,319 restricted stock units (time vesting) at an average grant date fair value of $38.18 per share and 163,310 restricted stock units (performance vesting) at an average grant date fair value of $40.17 per share.

Earnings per Common Share

Earnings per Common Share	6 Months Ended
	Jun. 30, 2024
Earnings Per Share [Abstract]
Earnings per Common Share	Earnings (Loss) per Share Basic income (loss) per share is based on the weighted-average number of shares of common stock outstanding. Diluted income (loss) per share is based upon the weighted-average number of shares of common stock outstanding plus all potentially dilutive securities that were assumed to be converted into common shares at the beginning of the period under the treasury stock method. This method requires the effect of potentially dilutive common stock equivalents be excluded from the calculation of diluted earnings per share for the periods in which net losses are reported because the effect is anti-dilutive. Quarter Ended June 30, Six Months Ended June 30, (In thousands) 2024 2023 2024 2023 Basic weighted-average common shares outstanding 16,661 16,865 16,634 16,849 Incremental shares due to: Stock-based awards — 91 — 152 Performance shares — 2 — 2 Diluted weighted-average common shares outstanding 16,661 16,958 16,634 17,003 Shares excluded from the computation of diluted earnings (loss) per share were 0.4 million for the quarter and six months ended June 30, 2024 and 0.5 million and 0.4 million for the quarter and six months ended June 30, 2023 as they were either antidilutive (not in-the-money) or the required performance conditions were not met.

Segment Information

Segment Information	6 Months Ended
	Jun. 30, 2024
Segment Reporting [Abstract]
Reportable Segments Information	Segment Information We operate in two segments: Pulp and Paperboard and Consumer Products. Our business units have been aggregated into these two segments based upon the similarity of economic characteristics, customers and distribution methods. Our results of operations are summarized below for each of these segments separately. Segment information was prepared in accordance with the same accounting principles as those described in Note 1 of the Notes to the Consolidated Financial Statements included in our Annual Report on Form 10-K for the year ended December 31, 2023. Quarter Ended June 30, Six Months Ended June 30, 2024 2023 2024 2023 Segment net sales: Pulp and Paperboard $ 333.6 $ 272.3 $ 578.1 $ 551.0 Consumer Products 252.8 253.6 505.9 502.0 Eliminations — (1.3) (1.4) (3.0) Net sales $ 586.4 $ 524.6 $ 1,082.6 $ 1,050.0 Operating income (loss): Pulp and Paperboard $ (12.2) $ 42.0 $ 13.1 $ 99.1 Consumer Products 27.4 25.0 59.0 29.2 Corporate and eliminations (17.7) (20.1) (36.2) (40.6) Other operating (income) charges, net (17.0) 0.4 (25.0) (0.6) Income (loss) from operations $ (19.5) $ 47.3 $ 10.9 $ 87.1 June 30, 2024 December 31, 2023 Assets: Pulp and Paperboard $ 1,483.4 $ 665.8 Consumer Products 894.1 917.2 Corporate 100.9 88.8 Total Assets $ 2,478.4 $ 1,671.8 Net sales, classified by major products, were as follows: Quarter Ended June 30, Six Months Ended June 30, 2024 2023 2024 2023 Major products: Paperboard $ 331.5 $ 263.0 $ 571.9 $ 536.4 Retail tissue 252.0 252.8 502.8 498.8 Pulp 0.2 7.0 2.5 10.3 Other 2.8 3.1 6.8 7.5 Eliminations — (1.3) (1.4) (3.0) Total net sales $ 586.4 $ 524.6 $ 1,082.6 $ 1,050.0

Unusual or Infrequently Occurri

Unusual or Infrequently Occurring Items	6 Months Ended
	Jun. 30, 2024
Unusual or Infrequent Items, or Both [Abstract]
Unusual or Infrequent Items, or Both, Disclosure	Insurance RecoveryDuring the first quarter of 2024, we experienced a natural gas disruption due to an extreme weather event that resulted in damage at our Lewiston, Idaho facility. During the quarter ended June 30, 2024, we received $10.5 million in insurance proceeds, of which $4.7 million was related to business interruption insurance and $5.8 million was related to reimbursable costs. Proceeds of $0.9 million and $9.3 million were allocated to our Consumer Products and Pulp and Paperboard segments, and were recorded within "Cost of sales" in the Consolidated Statements of Operations. Proceeds of $0.3 million were

Subsequent Events

Subsequent Events	3 Months Ended
	Jun. 30, 2024
Subsequent Events [Abstract]
Subsequent Events	Subsequent Event - Business Divestiture On July 21, 2024, the Company entered into a Membership Interest Purchase Agreement and an Asset Purchase Agreement with Sofidel America Corp. (“Sofidel”), a wholly owned subsidiary of Sofidel S.p.A., pursuant to which, among other things, the Company agreed to sell our consumer products division (tissue business) to Sofidel for approximately $1.06 billion in cash, subject to adjustments for debt, cash, transaction expenses and net working capital (the “Tissue Divestiture”). The Company expects net proceeds from the Tissue Divestiture of approximately $850 million, which we intend to use to meaningfully de-lever our balance sheet. The Tissue Divestiture is expected to close in the fourth quarter of 2024, subject to regulatory approvals and other customary closing conditions.

Pay vs Performance Disclosure

Pay vs Performance Disclosure - USD ($) $ in Millions	3 Months Ended				6 Months Ended
	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2024	Jun. 30, 2023
Pay vs Performance Disclosure
Net income	$ (25.8)	$ 17.2	$ 29.7	$ 23.8	$ (8.6)	$ 53.5

Insider Trading Arrangements

Insider Trading Arrangements	3 Months Ended
	Jun. 30, 2024
Trading Arrangements, by Individual
Material Terms of Trading Arrangement	During the quarter ended June 30, 2024, none of our officers or directors adopted or terminated a Rule 10b5-1 arrangement or non-Rule 10b5-1 trading arrangement, as each is defined in Item 408(a) of regulation S-K.
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

Business Combinations and Ass_2

Business Combinations and Asset Acquisitions (Tables)	6 Months Ended
	Jun. 30, 2024
Business Combination, Asset Acquisition, and Joint Venture Formation [Abstract]
Business Acquisition, Pro Forma Information	Quarter Ended June 30, Six Months Ended June 30, 2024 2023 2024 2023 Net sales $ 650.1 $669.6 $ 1,271.4 $1,383.2 Net income (loss) (23.2) 25.3 (21.9) 65.9
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed	Purchase price $ 708.2 Inventory 102.8 Other current assets 0.4 Property, plant and equipment 609.3 Other assets, net 11.8 Total assets acquired 724.3 Current portion of long-term debt (0.6) Accounts payable and accrued liabilities (7.7) Long-term debt (8.9) Other long-term obligation (12.6) Total liabilities assumed (29.7) Net assets acquired 694.5 Goodwill 13.7 Total estimated fair value of net assets acquired $ 708.2

Receivables, net (Tables)

Receivables, net (Tables)	6 Months Ended
	Jun. 30, 2024
Receivables, Net, Current [Abstract]
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]	June 30, 2024 December 31, 2023 Trade accounts receivable $ 230.7 $ 173.8 Allowance for current expected credit losses (1.9) (1.5) Unbilled receivables 3.9 4.1 Taxes receivable 18.1 4.8 Other 4.9 3.1 $ 255.8 $ 184.5

Inventories - (Tables)

Inventories - (Tables)	6 Months Ended
	Jun. 30, 2024
Inventory Disclosure [Abstract]
Inventories	Inventories Inventories are stated at the lower of net realizable value or current cost using the average cost method and consist of: June 30, 2024 December 31, 2023 Logs, chips and sawdust $ 28.0 $ 22.1 Pulp 20.2 16.8 Paperboard and tissue products 202.8 156.8 Materials and supplies 169.3 124.1 $ 420.2 $ 319.8

Property, Plant, and Equipment

Property, Plant, and Equipment (Tables)	6 Months Ended
	Jun. 30, 2024
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	Property, Plant and Equipment Property, plant and equipment consist of: June 30, 2024 December 31, 2023 Land and land improvements $ 126.7 $ 106.0 Buildings and improvements 513.9 461.0 Machinery and equipment 2,889.2 2,359.9 Construction in progress 111.2 53.0 3,641.0 2,979.8 Less accumulated depreciation and amortization (2,035.9) (1,989.7) Property, plant and equipment, net $ 1,605.1 $ 990.1

Intangible Assets, Goodwill a_2

Intangible Assets, Goodwill and Other (Tables)	6 Months Ended
	Jun. 30, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Intangible Assets and Goodwill	Pulp and Paperboard Goodwill Intangibles Total Balance as of December 31, 2023 35.1 6.4 41.5 Recognized goodwill 13.7 — 13.7 Amortization — (1.1) (1.1) Balance as of June 30, 2024 $ 48.8 $ 5.4 $ 54.1

Payables and Accruals (Tables)

Payables and Accruals (Tables)	6 Months Ended
	Jun. 30, 2024
Payables and Accruals [Abstract]
Schedule of Accounts Payable and Accrued Liabilities	Accounts payable and accrued liabilities consist of: June 30, 2024 December 31, 2023 Trade payables $ 278.8 $ 163.9 Accrued compensation 39.1 39.0 Operating lease liabilities 17.4 15.4 Other 82.9 66.9 $ 418.1 $ 285.1

Debt (Tables)

Debt (Tables)	6 Months Ended
	Jun. 30, 2024
Debt Disclosure [Abstract]
Schedule of Long-Term Debt Instruments	June 30, 2024 December 31, 2023 Interest Rate at June 30, 2024 Principal Unamortized Debt Costs Total Principal Unamortized Debt Costs Total Term Revolving Facility under Term loan Credit Agreement maturing 2029, fixed interest rate 9.1% $ 150.0 $ (2.5) $ 147.5 $ 150.0 $ (2.8) $ 147.2 Term Revolving Facility under Term Loan Credit Agreement maturing 2029, variable interest rate 9.1% $ 120.0 $ — $ 120.0 $ — $ — $ — Farm Credit Term Loan Facility under Term Loan Credit Agreement maturing 2031, variable interest rate 9.1% 394.8 (2.7) 392.1 — — — Commercial Bank Term Loan Facility under Term Loan Credit Agreement, maturing 2029, variable interest rate 8.6% 88.8 (0.6) 88.2 — — — 2020 Notes, maturing 2028, fixed interest rate 4.8% 275.0 (2.1) 272.9 275.0 (2.4) 272.6 Revolving loan facility under ABL Credit Agreement, maturing 2027, variable interest rate 6.9% 90.0 — 90.0 20.0 — 20.0 Finance leases 32.2 — 32.2 23.3 — 23.3 Total debt 1,150.9 (7.8) 1,143.0 468.3 (5.1) 463.1 Less: current portion (5.6) 0.5 (5.2) (0.8) — (0.8) Net long-term portion $ 1,145.2 $ (7.4) $ 1,137.9 $ 467.4 $ (5.1) $ 462.3
Schedule of Carrying Values and Estimated Fair Values of Debt Instruments	The fair value of our debt is included in the following table: June 30, 2024 December 31, 2023 Farm Credit Term Loan Facility under Term Credit agreement, maturing 2031, variable interest rate $ 400.0 $ — 2020 Notes, maturing 2028, fixed interest rate 255.1 255.1 Term Revolver Facility under Term Credit Agreement, maturing 2029, fixed interest rate 150.0 150.6 Term Revolver Facility under Term Credit Agreement, maturing 2029, variable interest rate 120.0 — Commercial Bank Term Loan Facility under Term Credit Agreement, maturing 2029, variable interest rate 90.0 — Revolving loan facility under ABL Credit Agreement, maturing 2027, variable interest rate 90.0 20.0 $ 1,105.1 $ 425.7

Other Operating Charges, net (T

Other Operating Charges, net (Tables)	6 Months Ended
	Jun. 30, 2024
Other Income and Expenses [Abstract]
Schedule of Other Operating Cost and Expense, by Component [Table Text Block]	Quarter Ended June 30, Six Months Ended June 30, 2024 2023 2024 2023 Acquisition and divestiture related costs $ 10.3 $ — $ 14.5 $ — Integration costs 4.1 — 6.5 — Loss on sale or impairment associated with assets 0.7 — 0.8 1.1 Directors' equity-based compensation expense 2.0 (0.2) 3.1 (0.4) Other — (0.3) — (0.1) $ 17.0 $ (0.4) $ 25.0 $ 0.6

Non-operating Income (Expense_2

Non-operating Income (Expense) (Tables)	6 Months Ended
	Jun. 30, 2024
Nonoperating Income (Expense) [Abstract]
Schedule of Other Nonoperating Income (Expense) [Table Text Block]	Quarter Ended June 30, Six Months Ended June 30, 2024 2023 2024 2023 Interest expense $ (16.1) $ (7.6) $ (22.8) $ (15.2) Amortization of debt issuance costs and accretion of debt discount (0.7) (0.3) (1.1) (0.6) Interest income 0.8 0.3 1.4 0.6 Interest expense, net (16.0) (7.5) (22.6) (15.1) Non-operating pension and other postretirement employee benefits 0.3 0.1 0.7 0.2 Total non-operating expense $ (15.7) $ (7.4) $ (21.9) $ (14.9)

Retirement Plans and Postreti_2

Retirement Plans and Postretirement Benefits - (Tables)	6 Months Ended
	Jun. 30, 2024
Retirement Benefits [Abstract]
Components of Net Periodic Cost of Pension and Other Postretirement Employee Benefit Plans	Retirement Plans and Postretirement Benefits The following table details the components of net periodic cost of our company-sponsored pension and other postretirement employee benefit plans for the periods presented: Quarter Ended June 30, Six Months Ended June 30, Pension Benefit Plans 2024 2023 2024 2023 Service cost $ 0.6 $ 0.9 $ 1.3 $ 1.7 Interest cost 3.0 3.1 5.9 6.2 Expected return on plan assets (3.9) (3.8) (7.9) (7.6) Net periodic cost $ (0.3) $ 0.2 $ (0.6) $ 0.4 Quarter Ended June 30, Six Months Ended June 30, Other Postretirement Employee Benefit Plans 2024 2023 2024 2023 Service cost $ 0.1 $ — $ 0.1 $ 0.1 Interest cost 0.7 0.7 1.3 1.4 Amortization of actuarial gain (0.1) (0.1) (0.1) (0.3) Net periodic cost $ 0.6 $ 0.6 $ 1.3 $ 1.2

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Loss (Tables)	6 Months Ended
	Jun. 30, 2024
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Reclassification out of Accumulated Other Comprehensive Income [Table Text Block]	Accumulated other comprehensive loss, net of tax, is comprised of the following: Pension Plan Adjustments Other Post Retirement Employee Benefit Plan Adjustments Total Balance at December 31, 2022 $ (46.5) $ 13.3 $ (33.3) Amounts reclassified from accumulated other comprehensive loss — (0.1) (0.1) Balance at June 30, 2023 $ (46.5) $ 13.1 $ (33.4) Balance at December 31, 2023 $ (42.0) $ 11.3 $ (30.7) Amounts reclassified from accumulated other comprehensive loss 0.1 (0.1) (0.1) Balance at June 30, 2024 $ (41.9) $ 11.2 $ (30.7)

Stockholders' Equity - (Tables)

Stockholders' Equity - (Tables)	6 Months Ended
	Jun. 30, 2024
Share-Based Payment Arrangement [Abstract]
Employee Equity-Based Compensation Expense	Quarter Ended June 30, Six Months Ended June 30, 2024 2023 2024 2023 Total stock-based compensation expense $ 4.7 $ 1.5 $ 8.1 $ 3.4 Income tax benefit related to stock-based compensation $ 1.0 $ 0.4 $ 1.3 $ 0.9 Impact on cash flow from proceeds on options exercised $ 1.1 $ — $ 1.1 $ — Impact on cash flow due to taxes paid related to net share settlement of equity awards $ 0.8 $ 0.4 $ 3.9 $ 4.6

Earnings per Common Share - (Ta

Earnings per Common Share - (Tables)	6 Months Ended
	Jun. 30, 2024
Earnings Per Share [Abstract]
Reconciliation of Number of Common Shares Used in Calculating Basic and Diluted Net Earnings per Share	Quarter Ended June 30, Six Months Ended June 30, (In thousands) 2024 2023 2024 2023 Basic weighted-average common shares outstanding 16,661 16,865 16,634 16,849 Incremental shares due to: Stock-based awards — 91 — 152 Performance shares — 2 — 2 Diluted weighted-average common shares outstanding 16,661 16,958 16,634 17,003

Segment Information - (Tables)

Segment Information - (Tables)	6 Months Ended
	Jun. 30, 2024
Segment Reporting [Abstract]
Reportable Segments Information	Segment Information We operate in two segments: Pulp and Paperboard and Consumer Products. Our business units have been aggregated into these two segments based upon the similarity of economic characteristics, customers and distribution methods. Our results of operations are summarized below for each of these segments separately. Segment information was prepared in accordance with the same accounting principles as those described in Note 1 of the Notes to the Consolidated Financial Statements included in our Annual Report on Form 10-K for the year ended December 31, 2023. Quarter Ended June 30, Six Months Ended June 30, 2024 2023 2024 2023 Segment net sales: Pulp and Paperboard $ 333.6 $ 272.3 $ 578.1 $ 551.0 Consumer Products 252.8 253.6 505.9 502.0 Eliminations — (1.3) (1.4) (3.0) Net sales $ 586.4 $ 524.6 $ 1,082.6 $ 1,050.0 Operating income (loss): Pulp and Paperboard $ (12.2) $ 42.0 $ 13.1 $ 99.1 Consumer Products 27.4 25.0 59.0 29.2 Corporate and eliminations (17.7) (20.1) (36.2) (40.6) Other operating (income) charges, net (17.0) 0.4 (25.0) (0.6) Income (loss) from operations $ (19.5) $ 47.3 $ 10.9 $ 87.1 June 30, 2024 December 31, 2023 Assets: Pulp and Paperboard $ 1,483.4 $ 665.8 Consumer Products 894.1 917.2 Corporate 100.9 88.8 Total Assets $ 2,478.4 $ 1,671.8 Net sales, classified by major products, were as follows: Quarter Ended June 30, Six Months Ended June 30, 2024 2023 2024 2023 Major products: Paperboard $ 331.5 $ 263.0 $ 571.9 $ 536.4 Retail tissue 252.0 252.8 502.8 498.8 Pulp 0.2 7.0 2.5 10.3 Other 2.8 3.1 6.8 7.5 Eliminations — (1.3) (1.4) (3.0) Total net sales $ 586.4 $ 524.6 $ 1,082.6 $ 1,050.0
Disaggregation of Revenue [Table Text Block]	Net sales, classified by major products, were as follows: Quarter Ended June 30, Six Months Ended June 30, 2024 2023 2024 2023 Major products: Paperboard $ 331.5 $ 263.0 $ 571.9 $ 536.4 Retail tissue 252.0 252.8 502.8 498.8 Pulp 0.2 7.0 2.5 10.3 Other 2.8 3.1 6.8 7.5 Eliminations — (1.3) (1.4) (3.0) Total net sales $ 586.4 $ 524.6 $ 1,082.6 $ 1,050.0

Business Combinations and Ass_3

Business Combinations and Asset Acquisitions (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
	May 01, 2024	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Business Acquisition [Line Items]
Business Acquisition, Pro Forma Revenue		$ 650.1	$ 669.6	$ 1,271.4	$ 1,383.2
Business Acquisition, Pro Forma Net Income (Loss)		(23.2)	$ 25.3	$ (21.9)	$ 65.9
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual		81.2
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual		$ (5.8)
Pending Augusta, Georgia Mill Acquisition [Member]
Business Acquisition [Line Items]
Business Combination, Consideration Transferred	$ 708.2
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Inventory	102.8
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Other	0.4
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment	609.3
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets	11.8
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets	724.3
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Long-Term Debt	(0.6)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other	(7.7)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-Term Debt	(8.9)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other	(12.6)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities	(29.7)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net	694.5
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net	13.7
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net	$ 708.2

Receivables, net (Details)

Receivables, net (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Receivables, Net, Current [Abstract]
Trade accounts receivable	$ 230.7	$ 173.8
Accounts Receivable, Allowance for Credit Loss, Current	(1.9)	(1.5)
Unbilled Receivables, Current	3.9	4.1
Income Taxes Receivable, Current	18.1	4.8
Other Receivables, Net, Current	4.9	3.1
Receivables, Net	$ 255.8	$ 184.5

Inventories - Inventories (Deta

Inventories - Inventories (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Inventory Disclosure [Abstract]
Inventories	$ 420.2	$ 319.8
Inventory [Line Items]
Inventory, Finished Goods, Net of Reserves	202.8	156.8
Inventory, Supplies, Net of Reserves	169.3	124.1
Inventories	420.2	319.8
Inventories
Inventory [Line Items]
Inventory, Raw Materials, Net of Reserves	28	22.1
Inventory Pulp
Inventory [Line Items]
Inventory, Raw Materials, Net of Reserves	$ 20.2	$ 16.8

Property, Plant, and Equipmen_2

Property, Plant, and Equipment (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 3,641	$ 2,979.8
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	(2,035.9)	(1,989.7)
Property, Plant and Equipment, Net	1,605.1	990.1
Land and Land Improvements
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	126.7	106
Building and Building Improvements
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	513.9	461
Machinery and Equipment
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	2,889.2	2,359.9
Construction in Progress
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 111.2	$ 53

Intangible Assets, Goodwill a_3

Intangible Assets, Goodwill and Other (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2024	Dec. 31, 2023
Goodwill [Line Items]
Amortization of Intangible Assets	$ (1.1)
Finite-Lived Intangible Assets, Accumulated Amortization	29.5	$ 28.4
Intangible Assets, Gross (Excluding Goodwill)	$ 34.9	34.9
Maximum
Goodwill [Line Items]
Finite-Lived Intangible Asset, Useful Life	10 years
Pulp And Paperboard [Member]
Goodwill [Line Items]
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net	$ 48.8	35.1
Goodwill, Acquired During Period	13.7
Amortization of Intangible Assets	(1.1)
Intangible Assets, Net (Excluding Goodwill)	5.4	$ 6.4
Customer Relationships
Goodwill [Line Items]
Intangible Assets, Net (Excluding Goodwill)	$ 5.4

Payables and Accruals (Details)

Payables and Accruals (Details) - USD ($) $ in Millions	6 Months Ended		12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Payables and Accruals [Abstract]
Trade payables	$ 278.8		$ 163.9
Accrued compensation	39.1		39
Operating Lease, Liability, Current	17.4		15.4
Other Accrued Liabilities, Current	82.9		66.9
Accounts payable and accrued liabilities	418.1		285.1
Capital Expenditures Incurred but Not yet Paid	35.1	$ 14	13
Supplier Finance Program, Obligation	15.1		14.7
Unrecognized Tax Benefits	$ 28.5		$ 27.4

Income Taxes - Narrative (Detai

Income Taxes - Narrative (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Income Tax Disclosure [Abstract]
Income Tax Expense (Benefit)	$ (9.4)	$ 10.2	$ (2.4)	$ 18.6
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent			21%

Debt (Details)

Debt (Details) - USD ($)		3 Months Ended		6 Months Ended
	May 01, 2024	Jun. 30, 2024	Dec. 31, 2023	Jun. 30, 2024	Oct. 27, 2023
Debt Instrument [Line Items]
Long-term Debt, Gross		$ 1,150,900,000	$ 468,300,000	$ 1,150,900,000
Unamortized Debt Issuance Expense		(7,800,000)	(5,100,000)	(7,800,000)
Unamortized Loan Commitment and Origination Fees and Unamortized Discounts or Premiums		500,000		500,000
Long-term Debt and Lease Obligation, Current		(5,600,000)	(800,000)	(5,600,000)
Long-term Debt and Lease Obligation		1,145,200,000	467,400,000	1,145,200,000
Finance Lease, Liability		32,200,000	23,300,000	32,200,000
Debt, Long-Term and Short-Term, Combined Amount		1,143,000,000	463,100,000	1,143,000,000
Long-term Debt, Fair Value		1,105,100,000	425,700,000	1,105,100,000
Borrowings on long-term debt			150,000,000
Line of credit facility, maximum borrowing capacity	$ 375,000,000				$ 270,000,000
Line of Credit Facility [Line Items]
Long-term Debt and Lease Obligation, Including Current Maturities		5,200,000		5,200,000
Long-term debt		1,137,900,000	462,300,000	1,137,900,000
Debt Issuance Costs, Current, Net		7,400,000	5,100,000	7,400,000
Potential additional lines of credit				60,000,000
Outstanding stand by letters of credit	3,700,000
Proceeds from Lines of Credit	$ 120,000,000
Term Loan | Ag West Farm Credit
Debt Instrument [Line Items]
Long-term Debt, Gross		$ 150,000,000	150,000,000	$ 150,000,000
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate		9.10%		9.10%
Long-term Debt		$ 147,500,000	147,200,000	$ 147,500,000
Unamortized Debt Issuance Expense		(2,500,000)	(2,800,000)	(2,500,000)
Long-term Debt, Fair Value		150,000,000	150,600,000	150,000,000
Term Loan | Rabobank
Debt Instrument [Line Items]
Long-term Debt, Gross		88,800,000	0	88,800,000
Long-term Debt		88,200,000	0	88,200,000
Unamortized Debt Issuance Expense		$ (600,000)	0	$ (600,000)
Long-Term Debt, Percentage Bearing Variable Interest, Percentage Rate		8.60%		8.60%
Long-term Debt, Fair Value		$ 90,000,000	0	$ 90,000,000
Term Loan | Ag West Farm Credit $400M
Debt Instrument [Line Items]
Long-term Debt, Gross		394,800,000	0	394,800,000
Long-term Debt		392,100,000	0	392,100,000
Unamortized Debt Issuance Expense		$ (2,700,000)	0	$ (2,700,000)
Long-Term Debt, Percentage Bearing Variable Interest, Percentage Rate		9.10%		9.10%
Long-term Debt, Fair Value		$ 400,000,000	0	$ 400,000,000
Term Loan | AgWest Farm Credit $120M
Debt Instrument [Line Items]
Long-term Debt, Gross		$ 120,000,000	0	$ 120,000,000
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate		9.10%		9.10%
Long-term Debt		$ 120,000,000	0	$ 120,000,000
Unamortized Debt Issuance Expense		0	0	0
Long-term Debt, Fair Value		120,000,000	0	120,000,000
Borrowings on long-term debt		120,000,000
Senior Note Due 2028 [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross		$ 275,000,000	275,000,000	$ 275,000,000
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate		4.80%		4.80%
Long-term Debt		$ 272,900,000	272,600,000	$ 272,900,000
Unamortized Debt Issuance Expense		(2,100,000)	(2,400,000)	(2,100,000)
Long-term Debt, Fair Value		$ 255,100,000	255,100,000	$ 255,100,000
J P Morgan
Debt Instrument [Line Items]
Long-Term Debt, Percentage Bearing Variable Interest, Percentage Rate		6.90%		6.90%
Long-term Debt, Fair Value		$ 90,000,000	20,000,000	$ 90,000,000
Line of Credit Facility [Line Items]
Long-term Line of Credit		90,000,000	$ 20,000,000	90,000,000
Unfunded Loan Commitment | Rabobank
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity		90,000,000		90,000,000
Unfunded Loan Commitment | Ag West Farm Credit $400M
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity		$ 400,000,000		$ 400,000,000

Other Operating Charges, net (D

Other Operating Charges, net (Details) - USD ($) $ in Millions	3 Months Ended				6 Months Ended
	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2024	Jun. 30, 2023
Other Operating Income (Expense), Net	$ 17	$ 7.9	$ (0.4)	$ 1.1	$ 25	$ 0.6
Operating Expense
Asset Impairment Charges	0.7	0.2	0	1.1	0.8	1.1
Other Operating Income	0
BusinessCombinationAndDivestitureCosts	10.3	4.2	0		14.5	0
Business Combination, Integration Related Costs	4.1	2.3	0		6.5	0
Other Income
Other Operating Income			(0.3)		0	(0.1)
Director [Member]
Share based compensation expense	$ 2	$ 1.2	$ (0.2)	$ (0.2)	$ 3.1	$ (0.4)

Non-operating Income (Expense_3

Non-operating Income (Expense) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Nonoperating Income (Expense) [Abstract]
Interest Expense	$ (16.1)	$ (7.6)	$ (22.8)	$ (15.2)
Amortization of Debt Issuance Costs	(0.7)	(0.3)	(1.1)	(0.6)
Interest Income, Other	0.8	0.3	1.4	0.6
Interest Expense, Net	(16)	(7.5)	(22.6)	(15.1)
Net Periodic Defined Benefits Expense (Reversal of Expense), Excluding Service Cost Component	0.3	0.1	0.7	0.2
Total non-operating expense	$ (15.7)	$ (7.4)	$ (21.9)	$ (14.9)

Retirement Plans and Postreti_3

Retirement Plans and Postretirement Benefits - Narrative (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Service Cost	$ 0.6	$ 0.9	$ 1.3	$ 1.7
Interest cost	3	3.1	5.9	6.2
Expected return on plan assets	(3.9)	(3.8)	(7.9)	(7.6)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)	(0.3)	0.2	(0.6)	0.4
Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Service Cost	0.1	0	0.1	0.1
Interest cost	0.7	0.7	1.3	1.4
Defined Benefit Plan, Amortization of Gain (Loss)	(0.1)	0.1	(0.1)	(0.3)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)	0.6	0.6	1.3	1.2
Cost of Sales [Member]
Defined Benefit Plan Disclosure [Line Items]
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, before Tax	0.6	0.8	1.1	1.5
Selling, General and Administrative Expenses [Member]
Defined Benefit Plan Disclosure [Line Items]
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, before Tax	$ 0.1	$ 0.1	$ 0.3	$ 0.3

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023	Dec. 31, 2022
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	$ (30.7)	$ (33.4)	$ (30.7)	$ (33.3)
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	(0.1)	(0.1)
Pension Plan [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	(41.9)	(46.5)	(42)	(46.5)
Pension Plan [Member] | Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	0.1	0
Other Postretirement Benefits Plan [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	11.2	13.1	$ 11.3	$ 13.3
Other Postretirement Benefits Plan [Member] | Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	$ (0.1)	$ (0.1)

Stockholders' Equity - (Detail)

Stockholders' Equity - (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	500,000		500,000
Equity-based compensation expense	$ 4.7	$ 1.5	$ 8.1	$ 3.4
Payment, Tax Withholding, Share-based Payment Arrangement	0.8	0.4	3.9	4.6
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount	19		19
Share-based Payment Arrangement, Expense, Tax Benefit	1	0.4	1.3	0.9
Proceeds from Stock Options Exercised	1.1	0	1.1	0
Cost of Sales [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, before Tax	$ 0.6	$ 0.8	$ 1.1	$ 1.5
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of share-based awards granted			221,319
Grant-date fair value of awards per share			$ 38.18
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements	0	91,000	0	152,000
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of share-based awards granted			163,310
Grant-date fair value of awards per share			$ 40.17
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements	0	2,000	0	2,000

Earnings per Common Share - Rec

Earnings per Common Share - Reconciliation of Number of Common Shares Used in Calculating Basic and Diluted Net Earnings Per Share (Detail) - shares shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted Average Number of Shares Outstanding, Basic	16,661	16,865	16,634	16,849
Weighted Average Number of Shares Outstanding, Diluted	16,661	16,958	16,634	17,003
Anti-dilutive shares excluded from calculation	400	500	400	400
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements	0	91	0	152
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements	0	2	0	2

Segment Information (Detail)

Segment Information (Detail) - USD ($) $ in Millions	3 Months Ended				6 Months Ended
	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Segment Reporting Information [Line Items]
Net Sales	$ 586.4		$ 524.6		$ 1,082.6	$ 1,050
Income (loss) from operations	(19.5)		47.3		10.9	87.1
Other operating charges, net	(17)	$ (7.9)	0.4	$ (1.1)	(25)	(0.6)
Assets	2,478.4				2,478.4		$ 1,671.8
Intersegment Eliminations
Segment Reporting Information [Line Items]
Net Sales	0		(1.3)		(1.4)	(3)
Corporate, Non-Segment
Segment Reporting Information [Line Items]
Income (loss) from operations	(17.7)		(20.1)		(36.2)	(40.6)
Paperboard [Domain]
Segment Reporting Information [Line Items]
Net Sales	331.5		263		502.8	498.8
Retail tissue [Domain]
Segment Reporting Information [Line Items]
Net Sales	252		252.8		571.9	536.4
Pulp [Domain]
Segment Reporting Information [Line Items]
Net Sales	0.2		7		2.5	10.3
Other [Domain]
Segment Reporting Information [Line Items]
Net Sales	2.8		3.1		6.8	7.5
Pulp And Paperboard [Member]
Segment Reporting Information [Line Items]
Assets	1,483.4				1,483.4		665.8
Pulp And Paperboard [Member] | Operating Segments
Segment Reporting Information [Line Items]
Net Sales	333.6		272.3		578.1	551
Income (loss) from operations	(12.2)		42		13.1	99.1
Consumer Products
Segment Reporting Information [Line Items]
Assets	894.1				894.1		917.2
Consumer Products | Operating Segments
Segment Reporting Information [Line Items]
Net Sales	252.8		253.6		505.9	502
Income (loss) from operations	27.4		$ 25		59	$ 29.2
Corporate Segment [Member]
Segment Reporting Information [Line Items]
Assets	$ 100.9				$ 100.9		$ 88.8

Unusual or Infrequently Occur_2

Unusual or Infrequently Occurring Items (Details) $ in Millions	3 Months Ended
	Jun. 30, 2024 USD ($)
Unusual or Infrequent Item, or Both [Line Items]
Unusual or Infrequent Item, or Both, Insurance Proceeds	$ 10.5
Operating Segments | Consumer Products
Unusual or Infrequent Item, or Both [Line Items]
Unusual or Infrequent Item, or Both, Insurance Proceeds	0.9
Operating Segments | Pulp And Paperboard [Member]
Unusual or Infrequent Item, or Both [Line Items]
Unusual or Infrequent Item, or Both, Insurance Proceeds	9.3
Insurance Settlement
Unusual or Infrequent Item, or Both [Line Items]
Insurance Recoveries	4.7
Insurance Claims
Unusual or Infrequent Item, or Both [Line Items]
Insurance Recoveries	5.8
Property, Plant and Equipment
Unusual or Infrequent Item, or Both [Line Items]
Unusual or Infrequent Item, or Both, Insurance Proceeds	$ 0.3

Subsequent Events (Details)

Subsequent Events (Details) - Subsequent Event - USD ($) $ in Millions	3 Months Ended
	Dec. 31, 2024	Jul. 21, 2024
Subsequent Event [Line Items]
Disposal Group, Including Discontinued Operation, Consideration		$ 1,060
Proceeds from Divestiture of Businesses	$ 850