Clearwater Paper (CLW) 10-Q2 May 182018 Q1 Quarterly reportFinancial data

Company Profile

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
Document and Entity Information - shares	Mar. 31, 2018	Apr. 27, 2018
Document and Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q1
Trading Symbol	CLW
Entity Registrant Name	CLEARWATER PAPER CORP
Entity Central Index Key	1,441,236
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		16,461,119

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2018	Mar. 31, 2017
Income Statement [Abstract]
Net sales		$ 436,952	$ 437,525
Costs and expenses:
Cost of sales		(392,433)	(387,060)
Selling, general and administrative expenses		(32,980)	(29,955)
Total operating costs and expenses		(425,413)	(417,015)
Income from operations		11,539	20,510
Interest expense, net		(8,020)	(8,043)
Non-operating pension and other postretirment benefit (costs) income	[1]	(1,279)	48
Earnings (loss) before income taxes		2,240	12,515
Income tax provision		360	(5,000)
Net earnings (loss)		$ 2,600	$ 7,515
Net earnings per common share:
Basic (in dollars per share)		$ 0.16	$ 0.46
Diluted (in dollars per share)		$ 0.16	$ 0.45

[1]	2 As a result of the adoption of ASU 2017-07, certain pension and OPEB (costs) income have been reclassified from operating to non-operating income. The service cost component of pension and OPEB costs remains within segment operating income. Refer to Note 2, "Recently Adopted and New Accounting Standards," and Note 10, "Pension and Other Postretirement Benefit Plans," for additional detail.

Condensed Consolidated Stateme3

Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Net earnings	$ 2,600	$ 7,515
Defined benefit pension and other postretirement employee benefits:
Amortization of actuarial loss included in net periodic cost, net of tax of $617 and $414	1,728	631
Amortization of prior service credit included in net periodic cost, net of tax of $(110) and $(151)	(309)	(230)	$ (230)
Other comprehensive income (loss), net of tax	1,419	401
Comprehensive income	$ 4,019	$ 7,916

Condensed Consolidated Stateme4

Condensed Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Amortization of actuarial loss included in net periodic cost, tax expense	$ 617	$ 414
Amortization of prior service credit included in net periodic cost, tax benefit	$ (110)	$ (151)

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Current assets:
Cash	$ 12,064	$ 15,738
Receivables, net	137,622	142,065
Taxes receivable	18,819	20,282
Inventories	259,432	266,043
Other Assets, Current	8,740	8,661
Total current assets	436,677	452,789
Property, plant and equipment, net	1,077,643	1,050,982
Goodwill	244,161	244,161
Intangible assets, net	30,592	32,542
Other assets, net	22,839	21,778
TOTAL ASSETS	1,811,912	1,802,252
Current liabilities:
Line of Credit, Current	168,500	155,000
Accounts payable and accrued liabilities	249,337	256,621
Current liability for pensions and other postretirement employee benefits	7,631	7,631
Total current liabilities	425,468	419,252
Long-term debt	570,716	570,524
Liability for pensions and other postretirement employee benefits	70,934	72,469
Other long-term obligations	42,189	43,275
Accrued taxes	2,807	2,770
Liabilities	1,231,192	1,226,818
Stockholders' equity:
Preferred stock, par value $0.0001 per share, 5,000,000 authorized shares, no shares issued	0	0
Common stock, par value $0.0001 per share, 100,000,000 authorized shares-16,461,119 and 16,447,898 shares issued	2	2
Additional paid-in capital	2,428	1,161
Retained earnings	633,706	618,254
Accumulated other comprehensive loss, net of tax	(55,416)	(43,983)
Total stockholders' equity	580,720	575,434
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 1,811,912	$ 1,802,252

Condensed Consolidated Balance6

Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Mar. 31, 2018	Dec. 31, 2017
Preferred stock, par value (in dollars per share)	$ 0.0001000000	$ 0.0001000000
Preferred stock, authorized (in shares)	5,000,000	5,000,000
Preferred stock, shares issued (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.0001000000	$ 0.0001000000
Common stock, authorized (in shares)	100,000,000	100,000,000
Common stock, shares issued (in shares)	16,461,119	16,447,898

Condensed Consolidated Stateme7

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Adjustments, Noncash Items, to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities	$ 336	$ 655
CASH FLOWS FROM OPERATING ACTIVITIES
Net cash provided by operating activities	30,853	45,538
Net earnings	2,600	7,515
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	25,167	27,557
Equity-based compensation expense	781	17
Deferred tax expense	(240)	4,375
Employee benefit plans	312	(788)
Changes in working capital, net	1,244	(1,089)
Change in taxes receivable, net	1,463	5,597
Other Operating Activities, Cash Flow Statement	(810)	1,699
CASH FLOWS FROM INVESTING ACTIVITIES
Additions to plant and equipment	(48,430)	(42,247)
Payments for (Proceeds from) Other Investing Activities	768	368
Net cash used for investing activities	(47,662)	(41,879)
CASH FLOWS FROM FINANCING ACTIVITIES
Purchase of treasury stock	0	(4,875)
Proceeds from (Repayments of) Short-term Debt	87,325	91,000
Payments of Debt Issuance Costs	(73,825)	(96,000)
Payment of tax withholdings on equity-based payment arrangements	(220)
Proceeds from (Payments for) Other Financing Activities	(365)	(790)
Net cash (used for) provided by financing activities	13,135	(10,665)
Decrease in cash and cash equivalents	(3,674)	(7,006)
Cash at beginning of period	15,738	23,001
Cash at end of period	12,064	15,995
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:
Cash paid for interest, net of amounts capitalized	13,927	14,418
Cash paid for income taxes	142	206
Cash received from income tax refunds	1,873	5,551
Changes in accrued plan and equipment	$ 1,317	$ (443)

Nature of Operations and Basis

Nature of Operations and Basis of Presentation	3 Months Ended
Nature of Operations and Basis of Presentation	Mar. 31, 2018
Accounting Policies [Abstract]
Nature of Operations and Basis of Presentation	Nature of Operations and Basis of Presentation GENERAL Clearwater Paper manufactures quality consumer tissue, away-from-home tissue, parent roll tissue, bleached paperboard and pulp at manufacturing facilities across the nation. The company is a premier supplier of private label tissue to major retailers and wholesale distributors, including grocery, drug, mass merchants and discount stores. In addition, the company produces bleached paperboard used by quality-conscious printers and packaging converters, and offers services that include custom sheeting, slitting and cutting. Clearwater Paper's employees build shareholder value by developing strong customer relationships through quality and service. In the second half of 2017, we began a review of our selling, general and administrative cost structure as part of our effort to maintain our longer-term competitiveness. As a result of this review, in the fourth quarter of 2017 we began executing on a plan that is expected to result in lower selling, general and administrative expenses beginning in 2018. For the three months ended March 31, 2018, we incurred $5.1 million of expenses associated with these efforts, which consisted primarily of severance and professional services expenses. On March 31, 2017, we closed our Oklahoma City, Oklahoma facility. In the first quarter of 2017, we incurred $5.7 million of costs associated with this closure, which included $3.7 million in accelerated depreciation. FINANCIAL STATEMENT PREPARATION AND PRESENTATION The accompanying Consolidated Balance Sheets at March 31, 2018 and December 31, 2017 , and the related Consolidated Statements of Operations, Comprehensive Income, and Condensed Consolidated Statements of Cash Flows for the three months ended March 31, 2018 and 2017 , have been prepared in conformity with accounting principles generally accepted in the United States of America, or GAAP. We believe that all adjustments necessary for a fair presentation of the results of the interim periods presented have been included. The results of operations for any interim period are not necessarily indicative of the results of operations to be expected for the full year. This Quarterly Report on Form 10-Q should be read in conjunction with our Annual Report on Form 10-K for the year ended December 31, 2017 , as filed with the Securities and Exchange Commission, or SEC, on February 21, 2018 . SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES SIGNIFICANT ESTIMATES The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of net sales and expenses during the reporting periods. Significant areas that may require the use of estimates and measurement of uncertainty include determination of net realizable value for deferred tax assets, uncertain tax positions, assessment of impairment of long-lived assets, variable consideration or reductions to revenue, revenue recognition estimates related to allocating the transaction price to various performance obligations, goodwill and intangibles, assessment of environmental matters, equity-based compensation and pension and postretirement obligation assumptions. Actual results could differ from those estimates and assumptions. CASH AND CASH EQUIVALENTS We consider all highly liquid instruments with maturities of three months or less at date of purchase to be cash equivalents. PROPERTY, PLANT AND EQUIPMENT Property, plant and equipment are stated at cost, including any interest costs capitalized, less accumulated depreciation. Depreciation of buildings, equipment and other depreciable assets is determined using the straight-line method. Assets we acquire through business combinations have estimated lives that are typically shorter than the assets we construct or buy new. Accumulated depreciation totaled $1,656.9 million and $1,636.3 million at March 31, 2018 and December 31, 2017 , respectively. For the three months ended March 31, 2018 , we capitalized $1.0 million of interest expense associated with the construction of a paper machine at our Shelby, North Carolina consumer products facility and $0.3 million of interest expense associated with the construction of a continuous pulp digester at our Lewiston, Idaho pulp and paperboard facility. For the three months ended March 31, 2017 , we capitalized $0.8 million of interest expense associated with the continuous pulp digester project and $0.1 million associated with the Shelby paper machine. Consistent with authoritative guidance, we assess the carrying amount of long-lived assets with definite lives that are held-for-use and evaluate them for recoverability whenever events or changes in circumstances indicate that we may be unable to recover the carrying amount of the assets. REVENUE RECOGNITION We enter into contracts that can include various combinations of tissue and paperboard products, which are generally capable of being distinct and accounted for as separate performance obligations. Revenue is recognized at a point in time upon transfer of control of promised products or services to customers in an amount that reflects the consideration we expect to receive in exchange for those products or services. Transfer of control typically occurs when the title and risk of loss passes to the customer. Shipping terms generally indicate when title and the risk of loss have passed. Revenue is recognized at shipment for sales when shipping terms are free on board, or FOB, shipping point. For sales where shipping terms are FOB destination, revenue is recognized when the goods are received by the customer. Revenue from both domestic and foreign sales of our products can involve shipping terms of either FOB shipping point or FOB destination or other shipping terms, depending upon the sales agreement with the customer. We have elected to treat shipping and handling costs for FOB shipping point contracts as a fulfillment cost, not as a separate performance obligation. No revenue is recognized over time. We typically expense incremental direct costs of obtaining a contract (sales commissions) when incurred because the amortization period is generally 12 months or less. We have also elected to use the practical expedient to not disclose unsatisfied or partially satisfied performance obligations as we have no unsatisfied contracts where the remaining portions are expected to be satisfied in a period greater than one year. We provide for trade promotions, customer cash discounts, customer returns and other deductions as reductions to net sales, which are accounted for as variable consideration when estimating the amount of revenue to recognize . Returns and credits are estimated at contract inception and updated at the end of each reporting period as additional information becomes available. Revenue net of returns and credits is only recognized to the extent that it is probable that a significant reversal of any incremental revenue will not occur. Significant judgment is required to determine the most probable amount of variable consideration to apply as a reduction to net sales. Revenue is recognized net of any taxes collected from customers, which are subsequently remitted to governmental authorities. Payment terms and conditions vary by contract type. Terms generally include a requirement of payment within 30 days, and do not include a significant financing component. Trade accounts receivable are stated at the amount we expect to collect. Trade accounts receivable do not bear interest. The allowance for doubtful accounts is our best estimate of the losses we expect will result from the inability of our customers to make required payments. We generally determine the allowance based on a combination of actual historical write-off experience and an analysis of specific customer accounts. As of March 31, 2018 and December 31, 2017 , we had allowances for doubtful accounts of $ 1.3 million and $1.4 million , respectively. Refer to Note 15, "Segment Information," for further information, including the disaggregation of revenue by segment, primary geographical market, and major product type. STOCKHOLDERS’ EQUITY On December 15, 2015, we announced that our Board of Directors had approved a stock repurchase program authorizing the repurchase of up to $100 million of our common stock. The repurchase program authorizes purchases of our common stock from time to time through open market purchases, negotiated transactions or other means, including accelerated stock repurchases and 10b5-1 trading plans in accordance with applicable securities laws and other restrictions. We have no obligation to repurchase stock under this program and may suspend or terminate the program at any time. In total, we have repurchased 1,440,696 shares of our outstanding common stock pursuant to this repurchase program, of which 84,750 shares were repurchased during the first quarter of 2017 at an average price of $57.53 per share. We did not repurchase shares during the first quarter of 2018. As of March 31, 2018 , we had up to $29.8 million of authorization remaining pursuant to this stock repurchase program. DERIVATIVES We had no activity during the three months ended March 31, 2018 and 2017 that required hedge or derivative accounting treatment. To help mitigate our exposure to market risk for changes in utility commodity pricing, we use firm price contracts to supply a portion of the natural gas requirements for our manufacturing facilities. As of March 31, 2018 , these contracts covered approximately 30% of our expected average monthly natural gas requirements for the remainder of 2018 . Historically, these contracts have qualified for treatment as “normal purchases or normal sales” under authoritative guidance and thus required no mark-to-market adjustment.

Recently Adopted and New Accoun

Recently Adopted and New Accounting Standards	3 Months Ended
Recently Adopted and New Accounting Standards	Mar. 31, 2018
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Recently Adopted and New Accounting Standards	Recently Adopted and New Accounting Standards Recently Adopted In February 2018, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2018-02, Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income to allow for reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from the Tax Cuts and Jobs Act (Act). This ASU also requires certain disclosures about stranded tax effects. We adopted this standard on January 1, 2018, which resulted in the reclassification of $12.9 million between retained earnings and accumulated other comprehensive loss (AOCL), increasing retained earnings and AOCL within the equity section of our Consolidated Balance Sheet. In May 2017, the FASB issued ASU 2017-09, Compensation—Stock Compensation (Topic 718): Scope of Modification Accounting to clarify when to account for a change to the terms or conditions of a share-based payment award as a modification. Under the new guidance, modification accounting is required only if the fair value, the vesting conditions, or the classification of the award (as equity or liability) changes as a result of the change in terms or conditions. The ASU was effective prospectively for annual periods beginning after December 15, 2017, including interim periods within those annual periods. We adopted this standard on January 1, 2018. The adoption of this ASU did not have a material impact on our consolidated financial statements. In March 2017, the FASB issued ASU 2017-07, Compensation - Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost . The standard requires that an employer disaggregate the service cost component, presented within the "Cost of sales" and "Selling, general, and administrative" line items on our Consolidated Statements of Operations, from the other components of net periodic cost (benefit), which are now presented within the "Non-operating pension and other postretirement benefit (costs) income" line item in our Consolidated Statements of Operations. We adopted the standard effective January 1, 2018, which resulted in the retrospective presentation in the income statement of the disaggregated components and the prospective changes to the capitalized portion of both service cost and the other components within inventory. The adoption did not have a material impact on our consolidated financial statements. Refer to Note 10, "Pension and Other Postretirement Employee Benefit Plans," for further information, including the amounts associated with the reclassification of the components of net periodic cost as operating and non-operating. In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606) . The core principle of the new standard is for companies to recognize revenue in a manner that depicts the transfer of goods or services to customers in amounts that reflect the consideration, or payment, to which the company expects to be entitled in exchange for those goods or services. The standard requires enhanced disclosures about revenue, including revenue recognition policies to identify performance obligations to customers and significant judgments in measurement and recognition. We adopted the new revenue guidance effective January 1, 2018 using the cumulative effect method, and did not have an adjustment to retained earnings upon adoption. The standard was applied to open contracts at the date of initial application. Aside from expanded disclosures, the adoption of Topic 606 did not have a material impact on our consolidated financial statement line items, processes, or internal controls. Refer to Note 1, "Nature of Operations and Basis of Presentation," for information about the basis of revenue recognition, and Note 15, "Segment Information," for further information including the disaggregation of revenue by segment, primary geographical market, and major product type. New Accounting Standards In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842) . The new standard establishes a right-of-use (ROU) model that requires a lessee to record a ROU asset and a lease liability on the balance sheet for all leases with terms longer than 12 months. Leases will be classified as either finance or operating, with classification affecting the pattern of expense recognition in the income statement. The new standard is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. We expect the adoption of this ASU will increase both our assets and liabilities presented on our Consolidated Balance Sheets to reflect the ROU assets and corresponding lease liabilities, as well as increase our leasing disclosures. As of December 31, 2017, the total future minimum lease payments for our operating leases totaled $75.3 million . We plan to adopt this standard on January 1, 2019. We are continuing our assessment and review of existing leases, which may identify other impacts, and are addressing necessary policy and process changes in preparation for adoption. We reviewed all other new accounting pronouncements issued in the period and concluded that they are not applicable to our business.

Inventories

Inventories	3 Months Ended
Inventories	Mar. 31, 2018
Inventory Disclosure [Abstract]
Inventories	Inventories Inventories at the balance sheet dates consist of: (In thousands) March 31, 2018 December 31, 2017 Pulp, paperboard and tissue products $ 160,656 $ 165,281 Materials and supplies 86,714 85,987 Logs, pulpwood, chips and sawdust 12,062 14,775 $ 259,432 $ 266,043

Intangible Assets

Intangible Assets	3 Months Ended
Intangible Assets	Mar. 31, 2018
Finite-Lived Intangible Assets, Net [Abstract]
Intangible Assets	Intangible Assets Intangible assets at the balance sheet dates are comprised of the following: March 31, 2018 (Dollars in thousands, lives in years) Weighted Average Useful Life Historical Cost Accumulated Amortization Net Balance Customer relationships 9.3 $ 62,401 $ (35,735 ) $ 26,666 Trade names and trademarks 7.4 6,786 (3,257 ) 3,529 Other intangibles 6.0 572 (175 ) 397 $ 69,759 $ (39,167 ) $ 30,592 December 31, 2017 (Dollars in thousands, lives in years) Weighted Average Useful Life Historical Cost Accumulated Amortization Net Balance Customer relationships 9.3 $ 62,401 $ (34,061 ) $ 28,340 Trade names and trademarks 7.4 6,786 (3,000 ) 3,786 Non-compete agreements 5.0 574 (574 ) — Other intangibles 6.0 572 (156 ) 416 $ 70,333 $ (37,791 ) $ 32,542 For the three months ended March 31, 2018 and 2017 , intangible assets amortization expense was $2.0 million and $1.9 million , respectively.

Taxes

Taxes	3 Months Ended
Taxes	Mar. 31, 2018
Income Tax Disclosure [Abstract]
Taxes	Income Taxes Consistent with authoritative guidance, our estimated annual effective tax rate is used to allocate expected annual income tax expense to interim periods. The rate is the ratio of estimated annual income tax expense to estimated pre-tax ordinary income, and excludes "discrete items," which are significant, unusual or infrequent items reported separately net of their related tax effect. The estimated annual effective tax rate is applied to the current interim period's ordinary income to determine the income tax expense allocated to the interim period. The income tax effects of discrete items are then determined separately and recognized in the interim period in which the income or expense items arise. Our estimated annual effective tax rate applied to the first quarter of 2018 is approximately 25% , compared with approximately 34% for the same period in 2017. During the first quarter of 2018, we recognized income tax benefits from a federal tax law extension on a previously expired credit and the remeasurement of certain deferred tax assets and liabilities resulting from state rate changes enacted in the period. The decrease in the rate is primarily due to the rate reduction enacted with the Tax Cuts and Jobs Act.

Accounts Payable and Accrued Li

Accounts Payable and Accrued Liabilities	3 Months Ended
Accounts Payable and Accrued Liabilities	Mar. 31, 2018
Accounts Payable and Accrued Liabilities [Abstract]
Accounts Payable and Accrued Liabilities	Accounts Payable and Accrued Liabilities Accounts payable and accrued liabilities at the balance sheet dates consist of: (In thousands) March 31, 2018 December 31, 2017 Trade accounts payable $ 180,394 $ 169,293 Accrued wages, salaries and employee benefits 32,538 41,979 Accrued discounts and allowances 7,142 7,283 Accrued taxes other than income taxes payable 7,372 6,907 Accrued utilities 5,994 6,759 Accrued interest 5,549 12,723 Other 10,348 11,677 $ 249,337 $ 256,621

Debt

Debt	3 Months Ended
Debt	Mar. 31, 2018
Line of Credit Facility [Line Items]
Debt	REVOLVING CREDIT FACILITIES As of March 31, 2018 , there was an aggregate of $168.5 million in borrowings outstanding under the credit facilities and $7.6 million of the credit facilities was being used to support outstanding standby letters of credit. As of December 31, 2017 , there was an aggregate of $155.0 million in borrowings outstanding under the credit facilities. The borrowings outstanding under the revolving credit facilities as of March 31, 2018 , consisted of short-term base and LIBOR rate loans and are classified as current liabilities in our Consolidated Balance Sheet. As of March 31, 2018 , we would have been permitted to draw an additional $123.9 million under the credit facilities. Debt REVOLVING CREDIT FACILITIES As of March 31, 2018 , there was an aggregate of $168.5 million in borrowings outstanding under the credit facilities and $7.6 million of the credit facilities was being used to support outstanding standby letters of credit. As of December 31, 2017 , there was an aggregate of $155.0 million in borrowings outstanding under the credit facilities. The borrowings outstanding under the revolving credit facilities as of March 31, 2018 , consisted of short-term base and LIBOR rate loans and are classified as current liabilities in our Consolidated Balance Sheet. As of March 31, 2018 , we would have been permitted to draw an additional $123.9 million under the credit facilities.

Other Long-Term Obligations

Other Long-Term Obligations	3 Months Ended
Other Long-Term Obligations	Mar. 31, 2018
Other Liabilities, Noncurrent [Abstract]
Other Long-Term Obligations	Other Long-Term Obligations Other long-term obligations at the balance sheet dates consist of: (In thousands) March 31, 2018 December 31, 2017 Long-term lease obligations, net of current portion $ 26,205 $ 26,460 Deferred proceeds 5,309 5,576 Deferred compensation 4,905 5,023 Other 5,770 6,216 $ 42,189 $ 43,275

Reclassification out of Accumul

Reclassification out of Accumulated Other Comprehensive Income (Notes)	3 Months Ended
	Mar. 31, 2018
Equity [Abstract]
Accumulated Other Comprehensive Income [Text Block]	Accumulated Other Comprehensive Loss Accumulated other comprehensive loss, net of tax, is comprised of the following: (In thousands) Pension and Other Post Retirement Employee Benefit Plan Adjustments Balance at December 31, 2016 $ (51,753 ) Other comprehensive income, net of tax 1 401 Balance at March 31, 2017 $ (51,352 ) Balance at December 31, 2017 $ (43,983 ) Other comprehensive income, net of tax 1 1,419 Reclassification of the income tax effects of the Tax Cuts and Jobs Act (12,852 ) Balance at March 31, 2018 $ (55,416 ) 1 Included in other comprehensive income are net periodic costs associated with our pension and other postretirement employee benefit (OPEB) plans that were reclassified from accumulated other comprehensive loss. For the three months ended March 31, 2018 and 2017 , actuarial loss amortization of $1.7 million and $0.6 million , respectively, as well as $0.3 million and $0.2 million , respectively, of prior service credit amortization were reclassified. These amounts are net of tax totaling $0.5 million and $0.3 million for each respective period. These accumulated other comprehensive loss components are included in the computation of net periodic pension and OPEB costs in Note 10, “Pension and Other Postretirement Employee Benefit Plans.”

Pension and Other Postretiremen

Pension and Other Postretirement Employee Benefit Plans	3 Months Ended
Pension and Other Postretirement Employee Benefit Plans	Mar. 31, 2018
Retirement Benefits [Abstract]
Pension and Other Postretirement Employee Benefit Plans	Pension and Other Postretirement Employee Benefit Plans The following table details the components of net periodic cost of our company-sponsored pension and OPEB plans for the periods presented: Three Months Ended March 31, (In thousands) 2018 2017 2018 2017 Pension Benefit Plans Other Postretirement Employee Benefit Plans Service cost $ 434 $ 560 $ 48 $ 68 Interest cost 3,000 3,278 607 704 Expected return on plan assets (4,254 ) (4,694 ) — — Amortization of prior service cost (credit) — 2 (419 ) (383 ) Amortization of actuarial loss (gain) 2,570 2,525 (225 ) (1,480 ) Net periodic cost (benefit) $ 1,750 $ 1,671 $ 11 $ (1,091 ) During the three months ended March 31, 2018 and 2017 , we made no contributions to our qualified pension plans. We do not expect, nor are we required, to make contributions in 2018 . During the three months ended March 31, 2018 , we made contributions of $0.1 million to our company-sponsored non-qualified pension plan. We estimate contributions will total $0.4 million in 2018 . We do not anticipate funding our OPEB plans in 2018 except to pay benefit costs as incurred during the year by plan participants. On January 1, 2018 we adopted ASU 2017-07, which allows for only the service cost component of net periodic cost to be included as an operating cost. The other components of net periodic costs are to be included as non-operating costs in the accompanying Consolidated Statements of Operations. During the three months ended March 31, 2018 , $0.3 million of net periodic pension and OPEB service costs were charged to "Cost of sales," $0.2 million were charged to "Selling, general and administrative expenses," and $1.3 million was charged to "Non-operating pension and other post retirement benefit (costs) income" in the accompanying Consolidated Statements of Operations. The adoption of ASU 2017-07 also required the reclassification of all prior period costs other than service costs from operating to non-operating. During the three months ended March 31, 2017 , $0.4 million and $0.3 million of net periodic costs were charged to "Cost of sales," and "Selling, general and administrative expenses," respectively, and less than $0.1 million of income was charged to "Non-operating pension and other postretirement benefit (costs) income" in the accompanying Consolidated Statements of Operations.

Earnings per Common Share

Earnings per Common Share	3 Months Ended
Earnings per Common Share	Mar. 31, 2018
Earnings Per Share [Abstract]
Earnings per Common Share	Earnings per Common Share Basic earnings per share are based on the weighted average number of shares of common stock outstanding. Diluted earnings per share are 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. The following table reconciles the number of common shares used in calculating the basic and diluted net earnings per share: Three Months Ended March 31, 2018 2017 Basic average common shares outstanding 1 16,476,011 16,484,069 Incremental shares due to: Restricted stock units 27,261 37,494 Performance shares 65,469 72,124 Stock options 8,670 48,688 Diluted average common shares outstanding 16,577,411 16,642,375 Basic net earnings per common share $ 0.16 $ 0.46 Diluted net earnings per common share 0.16 0.45 Anti-dilutive shares excluded from calculation 558,319 355,305 1 Basic average common shares outstanding include restricted stock awards that are fully vested, but are deferred for future issuance.

Equity-Based Compensation

Equity-Based Compensation	3 Months Ended
Equity-Based Compensation	Mar. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Equity-Based Compensation	Equity-Based Compensation We recognize equity-based compensation expense for all equity-based payment awards made to employees and directors, including restricted stock units, or RSUs, performance shares and stock options, based on estimated fair values. EMPLOYEE AWARDS Employee equity-based compensation expense was recognized as follows: Three Months Ended March 31, (In thousands) 2018 2017 Restricted stock units $ 422 $ 292 Performance shares 533 596 Stock options 535 579 Total employee equity-based compensation expense $ 1,490 $ 1,467 As provided in the Clearwater Paper Corporation 2008 and 2017 Stock Incentive Plans, the following performance measures are used to determine the number of performance shares ultimately issuable: • For performance shares granted in 2017, the performance measure used for 40% of the grant is a comparison of the percentile ranking of our total stockholder return, or TSR, compared to the TSR of a selected index, and for 60% of the performance share awards granted the performance measure used is a return on invested capital, or ROIC, performance measure. • For performance shares granted in 2018, the performance measure used for 40% of the performance share awards granted is an ROIC performance measure. For the remaining 60% of the grants, a free cash flow performance measure is used. The combined performance of these measures is then subject to an adjustment (increase or decrease) of up to 25% based on our TSR compared to the TSR performance of a selected index. The number of performance shares actually issued, as a percentage of the amount subject to the performance share award, could range from 0% - 200% . During the first three months of 2018 , 19,133 RSUs were settled and distributed. After adjusting for minimum tax withholdings, a net 13,221 shares were issued. In connection with the issued RSUs, the minimum tax withholding payments made during the three months ended March 31, 2018 totaled $0.2 million . During the three months ended March 31, 2018 , we had 912 stock option awards expire with a weighted-average exercise price of $ 66.97 . At March 31, 2018 , we had 303,840 stock option awards that were exercisable with a weighted-average exercise price of $63.19 . The following table summarizes the number of share-based awards granted under the Clearwater Paper Corporation 2017 Stock Incentive Plan during the three months ended March 31, 2018 and the grant-date fair value of the awards: Three Months Ended March 31, 2018 Number of Average Fair Restricted stock units 108,816 $ 37.45 Performance shares 49,040 37.45 Stock options 196,488 14.51 DIRECTOR AWARDS Annually, each outside member of our Board of Directors receives deferred equity-based awards that are measured in units of our common stock and ultimately settled in cash at the time of payment. Accordingly, the compensation expense associated with these awards is subject to fluctuations each quarter based on mark-to-market adjustments at each reporting period in line with changes in the market price of our common stock. As a result of the mark-to-market adjustment, we recorded director equity-based compensation benefit of $0.7 million and $1.5 million for the three months ended March 31, 2018 and 2017 , respectively. As of March 31, 2018 , the liability amounts associated with director equity-based compensation included in "Other long-term obligations" and "Accounts payable and accrued liabilities" on the accompanying Consolidated Balance Sheet were $3.2 million and $2.1 million , respectively. At December 31, 2017 , the liability amounts associated with director equity-based compensation included in "Other long-term obligations" and "Accounts payable and accrued liabilities" totaled $3.6 million and $2.4 million , respectively.

Fair Value Measurements

Fair Value Measurements	3 Months Ended
Fair Value Measurements	Mar. 31, 2018
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements The estimated fair values of our financial instruments at the dates presented below are as follows: March 31, December 31, 2018 2017 Carrying Fair Carrying Fair (In thousands) Amount Value Amount Value Cash and cash equivalents (Level 1) $ 12,064 $ 12,064 $ 15,738 $ 15,738 Borrowings under revolving credit facilities (Level 2) 168,500 168,417 155,000 154,882 Long-term debt (Level 2) 575,000 554,875 575,000 569,250 Accounting guidance establishes a framework for measuring the fair value of financial instruments, providing a 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, or “Level 1” measurements, followed by quoted prices of similar assets or observable market data considering the assets' underlying maturities, or “Level 2” measurements, and the lowest priority to unobservable inputs, or “Level 3” measurements. The asset’s or liability’s fair value measurement level within the fair value hierarchy is based on the lowest level of any input that is significant to the fair value measurement. Valuation techniques used should seek to maximize the use of observable inputs and minimize the use of unobservable inputs. Cash and cash equivalents, borrowings under the revolving credit facilities and long-term debt are the only items measured at fair value on a recurring basis. We do not have any financial assets measured at fair value on a nonrecurring basis. Nonfinancial assets measured at fair value on a nonrecurring basis include items such as long-lived assets held and used that are measured at fair value resulting from impairment, if deemed necessary.

Business Interruption and Insur

Business Interruption and Insurance Recovery	3 Months Ended
Business Interruption and Insurance Recovery	Mar. 31, 2018
Risks and Uncertainties [Abstract]
Business Insurance Recoveries [Text Block]	Business Interruption and Insurance Recovery In the first quarter of 2017 our financial statements included the impact of two separate fires, one of which occurred in the fourth quarter of 2016. Both claims were finalized in the first quarter of 2017 and the net proceeds from our insurance provider of $4.3 million was included in "Cost of Sales" in our Consolidated Statement of Operations for the three months ended March 31, 2017. There was no business interruption insurance activity in the three months ended March 31, 2018 at any of our facilities.

Segment Information

Segment Information	3 Months Ended
Segment Information	Mar. 31, 2018
Segment Reporting [Abstract]
Segment Information	Segment Information Our reportable segments are described below. Consumer Products Our Consumer Products segment manufactures and sells a complete line of at-home tissue products, or retail products, and away-from-home tissue products, or non-retail products, and parent rolls. Retail products include bath, paper towels, facial and napkin product categories. Non-retail products include conventional one and two-ply bath tissue, two-ply paper towels, hard wound towels and dispenser napkins sold to customers with commercial and industrial tissue needs. Each category is further distinguished according to quality segments: ultra, premium, value and economy. Pulp and Paperboard Our Pulp and Paperboard segment manufactures and markets solid bleached sulfate paperboard for the high-end segment of the packaging industry as well as offers custom sheeting, slitting and cutting of paperboard. Our overall production consists primarily of folding carton, liquid packaging, cup and plate products and commercial printing grades. The majority of our Pulp and Paperboard customers are packaging converters, folding carton converters, merchants and commercial printers. The table below presents information about our reportable segments: Three Months Ended March 31, (In thousands) 2018 2017 Segment net sales: Consumer Products $ 238,842 $ 242,423 Pulp and Paperboard 198,110 195,102 Total segment net sales $ 436,952 $ 437,525 Earnings (loss) before income taxes: Consumer Products 1,2,3 $ 1,629 $ 6,204 Pulp and Paperboard 2,3 26,154 27,200 27,783 33,404 Corporate 2,3 (16,244 ) (12,894 ) Income from operations 11,539 20,510 Interest expense, net (8,020 ) (8,043 ) Non-operating pension and other postretirement benefit (costs) income 2 (1,279 ) 48 Earnings before income taxes $ 2,240 $ 12,515 Depreciation and amortization: Consumer Products 1 $ 14,297 $ 18,242 Pulp and Paperboard 9,429 8,105 Corporate 1,441 1,210 Total depreciation and amortization $ 25,167 $ 27,557 1 Operating income for the Consumer Products segment for the three months ended March 31, 2017 includes $5.7 million of costs associated with the closure of the Oklahoma City facility. These costs include $3.7 million of accelerated depreciation. 2 As a result of the adoption of ASU 2017-07, certain pension and OPEB (costs) income have been reclassified from operating to non-operating income. The service cost component of pension and OPEB costs remains within segment operating income. Refer to Note 2, "Recently Adopted and New Accounting Standards," and Note 10, "Pension and Other Postretirement Benefit Plans," for additional detail. 3 Income (loss) from operations for the Consumer Products, Pulp and Paperboard and Corporate segments include $1.4 million , $0.3 million and $3.4 million , respectively, of expenses associated with our selling, general and administrative cost control measures. For the three months ended March 31, 2018 and 2017, one customer, the Kroger Company, accounted for approximately 16.3% and 14.9% , respectively, of our total company net sales. Net sales, classified by the major geographic areas in which our customers are located and major products, were as follows: Three Months Ended March 31, (In thousands) 2018 2017 Primary geographical markets: United States $ 420,820 $ 421,967 Other countries 16,132 15,558 Total net sales $ 436,952 $ 437,525 Major products: Retail tissue $ 220,885 $ 218,137 Paperboard 198,110 195,102 Non-retail tissue 16,959 23,993 Other 998 293 Total net sales $ 436,952 $ 437,525

Supplemental Guarantor Financia

Supplemental Guarantor Financial Information	3 Months Ended
Supplemental Guarantor Financial Information	Mar. 31, 2018
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Supplemental Guarantor Financial Information	Supplemental Guarantor Financial Information All of our subsidiaries that are 100% directly or indirectly owned by Clearwater Paper, guarantee our $275 million aggregate principal amount of 4.5% senior notes issued in January 2013 and due 2023, which we refer to as the 2013 Notes, on a full and unconditional, and joint and several basis. There are no significant restrictions on the ability of the guarantor subsidiaries to make distributions to Clearwater Paper, the issuer of the 2013 Notes. The following tables present the results of operations, financial position and cash flows of Clearwater Paper and its subsidiaries, the guarantor subsidiaries, and the eliminations necessary to arrive at the information for Clearwater Paper on a consolidated basis. Clearwater Paper Corporation Consolidating Statement of Operations and Comprehensive Income Three Months Ended March 31, 2018 Guarantor (In thousands) Issuer Subsidiaries Eliminations Total Net sales $ 455,177 $ 46,213 $ (64,438 ) $ 436,952 Cost and expenses: Cost of sales (412,957 ) (40,360 ) 60,884 (392,433 ) Selling, general and administrative expenses (27,632 ) (5,348 ) — (32,980 ) Total operating costs and expenses (440,589 ) (45,708 ) 60,884 (425,413 ) Income from operations 14,588 505 (3,554 ) 11,539 Interest expense, net (7,929 ) (91 ) — (8,020 ) Non-operating pension and other postretirement benefit costs (1,279 ) — — (1,279 ) Earnings before income taxes 5,380 414 (3,554 ) 2,240 Income tax (provision) benefit (382 ) (13 ) 755 360 Equity in earnings of subsidiary 401 — (401 ) — Net earnings $ 5,399 $ 401 $ (3,200 ) $ 2,600 Other comprehensive income, net of tax 1,419 — — 1,419 Comprehensive income $ 6,818 $ 401 $ (3,200 ) $ 4,019 Clearwater Paper Corporation Consolidating Statement of Operations and Comprehensive Income Three Months Ended March 31, 2017 (In thousands) Issuer Guarantor Subsidiaries Eliminations Total Net sales $ 420,215 $ 76,549 $ (59,239 ) $ 437,525 Cost and expenses: Cost of sales (374,481 ) (69,738 ) 57,159 (387,060 ) Selling, general and administrative expenses (23,565 ) (6,390 ) — (29,955 ) Total operating costs and expenses (398,046 ) (76,128 ) 57,159 (417,015 ) Income from operations 22,169 421 (2,080 ) 20,510 Interest expense, net (7,992 ) (51 ) — (8,043 ) Non-operating pension and other postretirement benefit income 48 — — 48 Earnings before income taxes 14,225 370 (2,080 ) 12,515 Income tax (provision) benefit (5,786 ) 45 741 (5,000 ) Equity in income of subsidiary 415 — (415 ) — Net earnings $ 8,854 $ 415 $ (1,754 ) $ 7,515 Other comprehensive income, net of tax 401 — — 401 Comprehensive income $ 9,255 $ 415 $ (1,754 ) $ 7,916 Clearwater Paper Corporation Consolidating Balance Sheet At March 31, 2018 (In thousands) Issuer Guarantor Subsidiaries Eliminations Total ASSETS Current assets: Cash and cash equivalents $ 12,064 $ — $ — $ 12,064 Receivables, net 118,734 18,888 — 137,622 Taxes receivable 18,780 39 — 18,819 Inventories 221,221 41,765 (3,554 ) 259,432 Other current assets 8,463 277 — 8,740 Total current assets 379,262 60,969 (3,554 ) 436,677 Property, plant and equipment, net 966,641 111,002 — 1,077,643 Goodwill 244,161 — — 244,161 Intangible assets, net 1,828 28,764 — 30,592 Intercompany (payable) receivable (4,185 ) 631 3,554 — Investment in subsidiary 157,401 — (157,401 ) — Other assets, net 22,461 2,645 (2,267 ) 22,839 TOTAL ASSETS $ 1,767,569 $ 204,011 $ (159,668 ) $ 1,811,912 LIABILITIES AND STOCKHOLDERS’ EQUITY Current liabilities: Borrowings under revolving credit facilities $ 168,500 $ — $ — $ 168,500 Accounts payable and accrued liabilities 229,662 19,675 — 249,337 Current liability for pensions and other postretirement employee benefits 7,631 — — 7,631 Total current liabilities 405,793 19,675 — 425,468 Long-term debt 570,716 — — 570,716 Liability for pensions and other postretirement employee benefits 70,934 — — 70,934 Other long-term obligations 42,189 — — 42,189 Accrued taxes 1,959 848 — 2,807 Deferred tax liabilities 95,258 26,087 (2,267 ) 119,078 TOTAL LIABILITIES 1,186,849 46,610 (2,267 ) 1,231,192 Stockholders’ equity excluding 636,136 157,401 (157,401 ) 636,136 Accumulated other comprehensive loss, net of tax (55,416 ) — — (55,416 ) TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY $ 1,767,569 $ 204,011 $ (159,668 ) $ 1,811,912 Clearwater Paper Corporation Consolidating Balance Sheet At December 31, 2017 (In thousands) Issuer Guarantor Subsidiaries Eliminations Total ASSETS Current assets: Cash and cash equivalents $ 15,738 $ — $ — $ 15,738 Receivables, net 125,001 17,064 — 142,065 Taxes receivable 20,242 40 — 20,282 Inventories 228,311 41,594 (3,862 ) 266,043 Other current assets 8,587 74 — 8,661 Total current assets 397,879 58,772 (3,862 ) 452,789 Property, plant and equipment, net 936,659 114,323 — 1,050,982 Goodwill 244,161 — — 244,161 Intangible assets, net 2,089 30,453 — 32,542 Intercompany payable (2,807 ) (1,055 ) 3,862 — Investment in subsidiary 157,000 — (157,000 ) — Other assets, net 21,413 2,696 (2,331 ) 21,778 TOTAL ASSETS $ 1,756,394 $ 205,189 $ (159,331 ) $ 1,802,252 LIABILITIES AND STOCKHOLDERS’ EQUITY Current liabilities: Borrowings under revolving credit facilities $ 155,000 $ — $ — $ 155,000 Accounts payable and accrued liabilities 235,439 21,182 — 256,621 Current liability for pensions and other postretirement employee benefits 7,631 — — 7,631 Total current liabilities 398,070 21,182 — 419,252 Long-term debt 570,524 — — 570,524 Liability for pensions and other postretirement employee benefits 72,469 — — 72,469 Other long-term obligations 43,275 — — 43,275 Accrued taxes 1,928 842 — 2,770 Deferred tax liabilities 94,694 26,165 (2,331 ) 118,528 TOTAL LIABILITIES 1,180,960 48,189 (2,331 ) 1,226,818 Stockholders’ equity excluding 619,417 157,000 (157,000 ) 619,417 Accumulated other comprehensive loss, net of tax (43,983 ) — — (43,983 ) TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY $ 1,756,394 $ 205,189 $ (159,331 ) $ 1,802,252 Clearwater Paper Corporation Consolidating Statement of Cash Flows Three Months Ended March 31, 2018 (In thousands) Issuer Guarantor Subsidiaries Eliminations Total CASH FLOWS FROM OPERATING ACTIVITIES Net earnings $ 5,399 $ 401 $ (3,200 ) $ 2,600 Adjustments to reconcile net earnings to net cash flows from operating activities: Depreciation and amortization 19,958 5,209 — 25,167 Equity-based compensation expense 781 — — 781 Deferred taxes (119 ) (121 ) — (240 ) Employee benefit plans 312 — — 312 Other non-cash adjustments, net 343 (7 ) — 336 Changes in working capital, net 4,661 (3,109 ) (308 ) 1,244 Changes in taxes receivable, net 1,462 1 — 1,463 Other, net (909 ) 99 — (810 ) Net cash flows from operating activities 31,888 2,473 (3,508 ) 30,853 CASH FLOWS FROM INVESTING ACTIVITIES Additions to property, plant and equipment (47,670 ) (760 ) — (48,430 ) Other, net 761 7 768 Net cash flows from investing activities (46,909 ) (753 ) — (47,662 ) CASH FLOWS FROM FINANCING ACTIVITIES Borrowings on revolving credit facilities 87,325 — — 87,325 Repayments of borrowings on revolving credit facilities (73,825 ) — — (73,825 ) Investment from (to) parent (1,788 ) (1,720 ) 3,508 — Other, net (365 ) — — (365 ) Net cash flows from financing activities 11,347 (1,720 ) 3,508 13,135 Decrease in cash and cash equivalents (3,674 ) — — (3,674 ) Cash and cash equivalents at beginning of period 15,738 — — 15,738 Cash and cash equivalents at end of period $ 12,064 $ — $ — $ 12,064 Clearwater Paper Corporation Consolidating Statement of Cash Flows Three Months Ended March 31, 2017 (In thousands) Issuer Guarantor Subsidiaries Eliminations Total CASH FLOWS FROM OPERATING ACTIVITIES Net earnings $ 8,854 $ 415 $ (1,754 ) $ 7,515 Adjustments to reconcile net earnings to net cash flows from operating activities: Depreciation and amortization 18,023 9,534 — 27,557 Equity-based compensation expense 17 — — 17 Deferred taxes 3,808 567 — 4,375 Employee benefit plans (788 ) — — (788 ) Other non-cash adjustments, net 285 370 — 655 Changes in working capital, net (25,829 ) 19,050 5,690 (1,089 ) Changes in taxes receivable, net 11,062 12 (5,477 ) 5,597 Other, net 1,500 199 — 1,699 Net cash flows from operating activities 16,932 30,147 (1,541 ) 45,538 CASH FLOWS FROM INVESTING ACTIVITIES Additions to property, plant and equipment (40,384 ) (1,863 ) — (42,247 ) Other, net 1 367 368 Net cash flows from investing activities (40,383 ) (1,496 ) — (41,879 ) CASH FLOWS FROM FINANCING ACTIVITIES Purchase of treasury stock (4,875 ) — — (4,875 ) Borrowings on revolving credit facilities 91,000 — — 91,000 Repayments of borrowings on revolving credit facilities (96,000 ) — — (96,000 ) Investment from (to) parent 30,525 (32,066 ) 1,541 — Other, net (790 ) — — (790 ) Net cash flows from financing activities 19,860 (32,066 ) 1,541 (10,665 ) Decrease in cash and cash equivalents (3,591 ) (3,415 ) — (7,006 ) Cash and cash equivalents at beginning of period 19,586 3,415 — 23,001 Cash and cash equivalents at end of period $ 15,995 $ — $ — $ 15,995

Nature of Operations and Basi24

Nature of Operations and Basis of Presentation (Policies)	3 Months Ended
Nature of Operations and Basis of Presentation (Policies)	Mar. 31, 2018
Accounting Policies [Abstract]
SIGNIFICANT ESTIMATES	SIGNIFICANT ESTIMATES The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of net sales and expenses during the reporting periods. Significant areas that may require the use of estimates and measurement of uncertainty include determination of net realizable value for deferred tax assets, uncertain tax positions, assessment of impairment of long-lived assets, variable consideration or reductions to revenue, revenue recognition estimates related to allocating the transaction price to various performance obligations, goodwill and intangibles, assessment of environmental matters, equity-based compensation and pension and postretirement obligation assumptions. Actual results could differ from those estimates and assumptions.
RESTRICTED CASH AND SHORT-TERM INVESTMENTS	CASH AND CASH EQUIVALENTS We consider all highly liquid instruments with maturities of three months or less at date of purchase to be cash equivalents.
TRADE ACCOUNTS RECEIVABLE	REVENUE RECOGNITION We enter into contracts that can include various combinations of tissue and paperboard products, which are generally capable of being distinct and accounted for as separate performance obligations. Revenue is recognized at a point in time upon transfer of control of promised products or services to customers in an amount that reflects the consideration we expect to receive in exchange for those products or services. Transfer of control typically occurs when the title and risk of loss passes to the customer. Shipping terms generally indicate when title and the risk of loss have passed. Revenue is recognized at shipment for sales when shipping terms are free on board, or FOB, shipping point. For sales where shipping terms are FOB destination, revenue is recognized when the goods are received by the customer. Revenue from both domestic and foreign sales of our products can involve shipping terms of either FOB shipping point or FOB destination or other shipping terms, depending upon the sales agreement with the customer. We have elected to treat shipping and handling costs for FOB shipping point contracts as a fulfillment cost, not as a separate performance obligation. No revenue is recognized over time. We typically expense incremental direct costs of obtaining a contract (sales commissions) when incurred because the amortization period is generally 12 months or less. We have also elected to use the practical expedient to not disclose unsatisfied or partially satisfied performance obligations as we have no unsatisfied contracts where the remaining portions are expected to be satisfied in a period greater than one year. We provide for trade promotions, customer cash discounts, customer returns and other deductions as reductions to net sales, which are accounted for as variable consideration when estimating the amount of revenue to recognize . Returns and credits are estimated at contract inception and updated at the end of each reporting period as additional information becomes available. Revenue net of returns and credits is only recognized to the extent that it is probable that a significant reversal of any incremental revenue will not occur. Significant judgment is required to determine the most probable amount of variable consideration to apply as a reduction to net sales. Revenue is recognized net of any taxes collected from customers, which are subsequently remitted to governmental authorities. Payment terms and conditions vary by contract type. Terms generally include a requirement of payment within 30 days, and do not include a significant financing component. Trade accounts receivable are stated at the amount we expect to collect. Trade accounts receivable do not bear interest. The allowance for doubtful accounts is our best estimate of the losses we expect will result from the inability of our customers to make required payments. We generally determine the allowance based on a combination of actual historical write-off experience and an analysis of specific customer accounts. As of March 31, 2018 and December 31, 2017 , we had allowances for doubtful accounts of $ 1.3 million and $1.4 million , respectively. Refer to Note 15, "Segment Information," for further information, including the disaggregation of revenue by segment, primary geographical market, and major product type.
PROPERTY, PLANT AND EQUIPMENT	PROPERTY, PLANT AND EQUIPMENT Property, plant and equipment are stated at cost, including any interest costs capitalized, less accumulated depreciation. Depreciation of buildings, equipment and other depreciable assets is determined using the straight-line method. Assets we acquire through business combinations have estimated lives that are typically shorter than the assets we construct or buy new. Accumulated depreciation totaled $1,656.9 million and $1,636.3 million at March 31, 2018 and December 31, 2017 , respectively. For the three months ended March 31, 2018 , we capitalized $1.0 million of interest expense associated with the construction of a paper machine at our Shelby, North Carolina consumer products facility and $0.3 million of interest expense associated with the construction of a continuous pulp digester at our Lewiston, Idaho pulp and paperboard facility. For the three months ended March 31, 2017 , we capitalized $0.8 million of interest expense associated with the continuous pulp digester project and $0.1 million associated with the Shelby paper machine. Consistent with authoritative guidance, we assess the carrying amount of long-lived assets with definite lives that are held-for-use and evaluate them for recoverability whenever events or changes in circumstances indicate that we may be unable to recover the carrying amount of the assets.
STOCKHOLDERS' EQUITY	STOCKHOLDERS’ EQUITY On December 15, 2015, we announced that our Board of Directors had approved a stock repurchase program authorizing the repurchase of up to $100 million of our common stock. The repurchase program authorizes purchases of our common stock from time to time through open market purchases, negotiated transactions or other means, including accelerated stock repurchases and 10b5-1 trading plans in accordance with applicable securities laws and other restrictions. We have no obligation to repurchase stock under this program and may suspend or terminate the program at any time. In total, we have repurchased 1,440,696 shares of our outstanding common stock pursuant to this repurchase program, of which 84,750 shares were repurchased during the first quarter of 2017 at an average price of $57.53 per share. We did not repurchase shares during the first quarter of 2018. As of March 31, 2018 , we had up to $29.8 million of authorization remaining pursuant to this stock repurchase program.
DERIVATIVES	DERIVATIVES We had no activity during the three months ended March 31, 2018 and 2017 that required hedge or derivative accounting treatment. To help mitigate our exposure to market risk for changes in utility commodity pricing, we use firm price contracts to supply a portion of the natural gas requirements for our manufacturing facilities. As of March 31, 2018 , these contracts covered approximately 30% of our expected average monthly natural gas requirements for the remainder of 2018 . Historically, these contracts have qualified for treatment as “normal purchases or normal sales” under authoritative guidance and thus required no mark-to-market adjustment.

Inventories (Tables)

Inventories (Tables)	3 Months Ended
Inventories (Tables)	Mar. 31, 2018
Inventory Disclosure [Abstract]
Inventories	Inventories at the balance sheet dates consist of: (In thousands) March 31, 2018 December 31, 2017 Pulp, paperboard and tissue products $ 160,656 $ 165,281 Materials and supplies 86,714 85,987 Logs, pulpwood, chips and sawdust 12,062 14,775 $ 259,432 $ 266,043

Intangible Assets (Tables)

Intangible Assets (Tables)	3 Months Ended
Intangible Assets (Tables)	Mar. 31, 2018
Finite-Lived Intangible Assets, Net [Abstract]
Intangible Assets	Intangible assets at the balance sheet dates are comprised of the following: March 31, 2018 (Dollars in thousands, lives in years) Weighted Average Useful Life Historical Cost Accumulated Amortization Net Balance Customer relationships 9.3 $ 62,401 $ (35,735 ) $ 26,666 Trade names and trademarks 7.4 6,786 (3,257 ) 3,529 Other intangibles 6.0 572 (175 ) 397 $ 69,759 $ (39,167 ) $ 30,592 December 31, 2017 (Dollars in thousands, lives in years) Weighted Average Useful Life Historical Cost Accumulated Amortization Net Balance Customer relationships 9.3 $ 62,401 $ (34,061 ) $ 28,340 Trade names and trademarks 7.4 6,786 (3,000 ) 3,786 Non-compete agreements 5.0 574 (574 ) — Other intangibles 6.0 572 (156 ) 416 $ 70,333 $ (37,791 ) $ 32,542

Accounts Payable and Accrued 27

Accounts Payable and Accrued Liabilities (Tables)	3 Months Ended
Accounts Payable and Accrued Liabilities (Tables)	Mar. 31, 2018
Accounts Payable and Accrued Liabilities [Abstract]
Accounts Payable and Accrued Liabilities	Accounts payable and accrued liabilities at the balance sheet dates consist of: (In thousands) March 31, 2018 December 31, 2017 Trade accounts payable $ 180,394 $ 169,293 Accrued wages, salaries and employee benefits 32,538 41,979 Accrued discounts and allowances 7,142 7,283 Accrued taxes other than income taxes payable 7,372 6,907 Accrued utilities 5,994 6,759 Accrued interest 5,549 12,723 Other 10,348 11,677 $ 249,337 $ 256,621

Other Long-Term Obligations (Ta

Other Long-Term Obligations (Tables)	3 Months Ended
Other Long-Term Obligations (Tables)	Mar. 31, 2018
Other Liabilities, Noncurrent [Abstract]
Other Long-Term Obligations	Other long-term obligations at the balance sheet dates consist of: (In thousands) March 31, 2018 December 31, 2017 Long-term lease obligations, net of current portion $ 26,205 $ 26,460 Deferred proceeds 5,309 5,576 Deferred compensation 4,905 5,023 Other 5,770 6,216 $ 42,189 $ 43,275

Reclassification out of Accum29

Reclassification out of Accumulated Other Comprehensive Income (Tables)	3 Months Ended
	Mar. 31, 2018
Equity [Abstract]
Reclassification out of Accumulated Other Comprehensive Income [Table Text Block]	Accumulated other comprehensive loss, net of tax, is comprised of the following: (In thousands) Pension and Other Post Retirement Employee Benefit Plan Adjustments Balance at December 31, 2016 $ (51,753 ) Other comprehensive income, net of tax 1 401 Balance at March 31, 2017 $ (51,352 ) Balance at December 31, 2017 $ (43,983 ) Other comprehensive income, net of tax 1 1,419 Reclassification of the income tax effects of the Tax Cuts and Jobs Act (12,852 ) Balance at March 31, 2018 $ (55,416 ) 1 Included in other comprehensive income are net periodic costs associated with our pension and other postretirement employee benefit (OPEB) plans that were reclassified from accumulated other comprehensive loss. For the three months ended March 31, 2018 and 2017 , actuarial loss amortization of $1.7 million and $0.6 million , respectively, as well as $0.3 million and $0.2 million , respectively, of prior service credit amortization were reclassified. These amounts are net of tax totaling $0.5 million and $0.3 million for each respective period. These accumulated other comprehensive loss components are included in the computation of net periodic pension and OPEB costs in Note 10, “Pension and Other Postretirement Employee Benefit Plans.”

Pension and Other Postretirem30

Pension and Other Postretirement Employee Benefit Plans (Tables)	3 Months Ended
	Mar. 31, 2018
Retirement Benefits [Abstract]
Components of Net Periodic Cost of Pension and Other Postretirement Employee Benefit Plans	The following table details the components of net periodic cost of our company-sponsored pension and OPEB plans for the periods presented: Three Months Ended March 31, (In thousands) 2018 2017 2018 2017 Pension Benefit Plans Other Postretirement Employee Benefit Plans Service cost $ 434 $ 560 $ 48 $ 68 Interest cost 3,000 3,278 607 704 Expected return on plan assets (4,254 ) (4,694 ) — — Amortization of prior service cost (credit) — 2 (419 ) (383 ) Amortization of actuarial loss (gain) 2,570 2,525 (225 ) (1,480 ) Net periodic cost (benefit) $ 1,750 $ 1,671 $ 11 $ (1,091 )

Earnings per Common Share (Tabl

Earnings per Common Share (Tables)	3 Months Ended
Earnings per Common Share (Tables)	Mar. 31, 2018
Earnings Per Share [Abstract]
Reconciliation of Number of Common Shares Used in Calculating Basic and Diluted Net Earnings per Share	The following table reconciles the number of common shares used in calculating the basic and diluted net earnings per share: Three Months Ended March 31, 2018 2017 Basic average common shares outstanding 1 16,476,011 16,484,069 Incremental shares due to: Restricted stock units 27,261 37,494 Performance shares 65,469 72,124 Stock options 8,670 48,688 Diluted average common shares outstanding 16,577,411 16,642,375 Basic net earnings per common share $ 0.16 $ 0.46 Diluted net earnings per common share 0.16 0.45 Anti-dilutive shares excluded from calculation 558,319 355,305 1 Basic average common shares outstanding include restricted stock awards that are fully vested, but are deferred for future issuance.

Equity-Based Compensation (Tabl

Equity-Based Compensation (Tables)	3 Months Ended
Equity-Based Compensation (Tables)	Mar. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Employee Equity-Based Compensation Expense	Employee equity-based compensation expense was recognized as follows: Three Months Ended March 31, (In thousands) 2018 2017 Restricted stock units $ 422 $ 292 Performance shares 533 596 Stock options 535 579 Total employee equity-based compensation expense $ 1,490 $ 1,467
Summary of Number of Share-Based Awards Granted	The following table summarizes the number of share-based awards granted under the Clearwater Paper Corporation 2017 Stock Incentive Plan during the three months ended March 31, 2018 and the grant-date fair value of the awards: Three Months Ended March 31, 2018 Number of Average Fair Restricted stock units 108,816 $ 37.45 Performance shares 49,040 37.45 Stock options 196,488 14.51

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	3 Months Ended
Fair Value Measurements (Tables)	Mar. 31, 2018
Fair Value Disclosures [Abstract]
Estimated Fair Values of Financial Instruments	The estimated fair values of our financial instruments at the dates presented below are as follows: March 31, December 31, 2018 2017 Carrying Fair Carrying Fair (In thousands) Amount Value Amount Value Cash and cash equivalents (Level 1) $ 12,064 $ 12,064 $ 15,738 $ 15,738 Borrowings under revolving credit facilities (Level 2) 168,500 168,417 155,000 154,882 Long-term debt (Level 2) 575,000 554,875 575,000 569,250

Segment Information (Tables)

Segment Information (Tables)	3 Months Ended
Segment Information (Tables)	Mar. 31, 2018
Segment Reporting Information [Line Items]
Disaggregation of Revenue [Table Text Block]	Net sales, classified by the major geographic areas in which our customers are located and major products, were as follows: Three Months Ended March 31, (In thousands) 2018 2017 Primary geographical markets: United States $ 420,820 $ 421,967 Other countries 16,132 15,558 Total net sales $ 436,952 $ 437,525 Major products: Retail tissue $ 220,885 $ 218,137 Paperboard 198,110 195,102 Non-retail tissue 16,959 23,993 Other 998 293 Total net sales $ 436,952 $ 437,525
Reportable Segments Information	Our reportable segments are described below. Consumer Products Our Consumer Products segment manufactures and sells a complete line of at-home tissue products, or retail products, and away-from-home tissue products, or non-retail products, and parent rolls. Retail products include bath, paper towels, facial and napkin product categories. Non-retail products include conventional one and two-ply bath tissue, two-ply paper towels, hard wound towels and dispenser napkins sold to customers with commercial and industrial tissue needs. Each category is further distinguished according to quality segments: ultra, premium, value and economy. Pulp and Paperboard Our Pulp and Paperboard segment manufactures and markets solid bleached sulfate paperboard for the high-end segment of the packaging industry as well as offers custom sheeting, slitting and cutting of paperboard. Our overall production consists primarily of folding carton, liquid packaging, cup and plate products and commercial printing grades. The majority of our Pulp and Paperboard customers are packaging converters, folding carton converters, merchants and commercial printers. The table below presents information about our reportable segments: Three Months Ended March 31, (In thousands) 2018 2017 Segment net sales: Consumer Products $ 238,842 $ 242,423 Pulp and Paperboard 198,110 195,102 Total segment net sales $ 436,952 $ 437,525 Earnings (loss) before income taxes: Consumer Products 1,2,3 $ 1,629 $ 6,204 Pulp and Paperboard 2,3 26,154 27,200 27,783 33,404 Corporate 2,3 (16,244 ) (12,894 ) Income from operations 11,539 20,510 Interest expense, net (8,020 ) (8,043 ) Non-operating pension and other postretirement benefit (costs) income 2 (1,279 ) 48 Earnings before income taxes $ 2,240 $ 12,515 Depreciation and amortization: Consumer Products 1 $ 14,297 $ 18,242 Pulp and Paperboard 9,429 8,105 Corporate 1,441 1,210 Total depreciation and amortization $ 25,167 $ 27,557 1 Operating income for the Consumer Products segment for the three months ended March 31, 2017 includes $5.7 million of costs associated with the closure of the Oklahoma City facility. These costs include $3.7 million of accelerated depreciation. 2 As a result of the adoption of ASU 2017-07, certain pension and OPEB (costs) income have been reclassified from operating to non-operating income. The service cost component of pension and OPEB costs remains within segment operating income. Refer to Note 2, "Recently Adopted and New Accounting Standards," and Note 10, "Pension and Other Postretirement Benefit Plans," for additional detail. 3 Income (loss) from operations for the Consumer Products, Pulp and Paperboard and Corporate segments include $1.4 million , $0.3 million and $3.4 million , respectively, of expenses associated with our selling, general and administrative cost control measures. For the three months ended March 31, 2018 and 2017, one customer, the Kroger Company, accounted for approximately 16.3% and 14.9% , respectively, of our total company net sales. Net sales, classified by the major geographic areas in which our customers are located and major products, were as follows: Three Months Ended March 31, (In thousands) 2018 2017 Primary geographical markets: United States $ 420,820 $ 421,967 Other countries 16,132 15,558 Total net sales $ 436,952 $ 437,525 Major products: Retail tissue $ 220,885 $ 218,137 Paperboard 198,110 195,102 Non-retail tissue 16,959 23,993 Other 998 293 Total net sales $ 436,952 $ 437,525 The table below presents information about our reportable segments: Three Months Ended March 31, (In thousands) 2018 2017 Segment net sales: Consumer Products $ 238,842 $ 242,423 Pulp and Paperboard 198,110 195,102 Total segment net sales $ 436,952 $ 437,525 Earnings (loss) before income taxes: Consumer Products 1,2,3 $ 1,629 $ 6,204 Pulp and Paperboard 2,3 26,154 27,200 27,783 33,404 Corporate 2,3 (16,244 ) (12,894 ) Income from operations 11,539 20,510 Interest expense, net (8,020 ) (8,043 ) Non-operating pension and other postretirement benefit (costs) income 2 (1,279 ) 48 Earnings before income taxes $ 2,240 $ 12,515 Depreciation and amortization: Consumer Products 1 $ 14,297 $ 18,242 Pulp and Paperboard 9,429 8,105 Corporate 1,441 1,210 Total depreciation and amortization $ 25,167 $ 27,557 1 Operating income for the Consumer Products segment for the three months ended March 31, 2017 includes $5.7 million of costs associated with the closure of the Oklahoma City facility. These costs include $3.7 million of accelerated depreciation. 2 As a result of the adoption of ASU 2017-07, certain pension and OPEB (costs) income have been reclassified from operating to non-operating income. The service cost component of pension and OPEB costs remains within segment operating income. Refer to Note 2, "Recently Adopted and New Accounting Standards," and Note 10, "Pension and Other Postretirement Benefit Plans," for additional detail. 3 Income (loss) from operations for the Consumer Products, Pulp and Paperboard and Corporate segments include $1.4 million , $0.3 million and $3.4 million , respectively, of expenses associated with our selling, general and administrative cost control measures. For the three months ended March 31, 2018 and 2017, one customer, the Kroger Company, accounted for approximately 16.3% and 14.9% , respectively, of our total company net sales.

Supplemental Guarantor Financ35

Supplemental Guarantor Financial Information (Tables)	3 Months Ended
Supplemental Guarantor Financial Information (Tables)	Mar. 31, 2018
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Condensed Consolidating Statement of Operations and Comprehensive Income (Loss)	Clearwater Paper Corporation Consolidating Statement of Operations and Comprehensive Income Three Months Ended March 31, 2018 Guarantor (In thousands) Issuer Subsidiaries Eliminations Total Net sales $ 455,177 $ 46,213 $ (64,438 ) $ 436,952 Cost and expenses: Cost of sales (412,957 ) (40,360 ) 60,884 (392,433 ) Selling, general and administrative expenses (27,632 ) (5,348 ) — (32,980 ) Total operating costs and expenses (440,589 ) (45,708 ) 60,884 (425,413 ) Income from operations 14,588 505 (3,554 ) 11,539 Interest expense, net (7,929 ) (91 ) — (8,020 ) Non-operating pension and other postretirement benefit costs (1,279 ) — — (1,279 ) Earnings before income taxes 5,380 414 (3,554 ) 2,240 Income tax (provision) benefit (382 ) (13 ) 755 360 Equity in earnings of subsidiary 401 — (401 ) — Net earnings $ 5,399 $ 401 $ (3,200 ) $ 2,600 Other comprehensive income, net of tax 1,419 — — 1,419 Comprehensive income $ 6,818 $ 401 $ (3,200 ) $ 4,019 Clearwater Paper Corporation Consolidating Statement of Operations and Comprehensive Income Three Months Ended March 31, 2017 (In thousands) Issuer Guarantor Subsidiaries Eliminations Total Net sales $ 420,215 $ 76,549 $ (59,239 ) $ 437,525 Cost and expenses: Cost of sales (374,481 ) (69,738 ) 57,159 (387,060 ) Selling, general and administrative expenses (23,565 ) (6,390 ) — (29,955 ) Total operating costs and expenses (398,046 ) (76,128 ) 57,159 (417,015 ) Income from operations 22,169 421 (2,080 ) 20,510 Interest expense, net (7,992 ) (51 ) — (8,043 ) Non-operating pension and other postretirement benefit income 48 — — 48 Earnings before income taxes 14,225 370 (2,080 ) 12,515 Income tax (provision) benefit (5,786 ) 45 741 (5,000 ) Equity in income of subsidiary 415 — (415 ) — Net earnings $ 8,854 $ 415 $ (1,754 ) $ 7,515 Other comprehensive income, net of tax 401 — — 401 Comprehensive income $ 9,255 $ 415 $ (1,754 ) $ 7,916
Condensed Consolidating Balance Sheet	Clearwater Paper Corporation Consolidating Balance Sheet At March 31, 2018 (In thousands) Issuer Guarantor Subsidiaries Eliminations Total ASSETS Current assets: Cash and cash equivalents $ 12,064 $ — $ — $ 12,064 Receivables, net 118,734 18,888 — 137,622 Taxes receivable 18,780 39 — 18,819 Inventories 221,221 41,765 (3,554 ) 259,432 Other current assets 8,463 277 — 8,740 Total current assets 379,262 60,969 (3,554 ) 436,677 Property, plant and equipment, net 966,641 111,002 — 1,077,643 Goodwill 244,161 — — 244,161 Intangible assets, net 1,828 28,764 — 30,592 Intercompany (payable) receivable (4,185 ) 631 3,554 — Investment in subsidiary 157,401 — (157,401 ) — Other assets, net 22,461 2,645 (2,267 ) 22,839 TOTAL ASSETS $ 1,767,569 $ 204,011 $ (159,668 ) $ 1,811,912 LIABILITIES AND STOCKHOLDERS’ EQUITY Current liabilities: Borrowings under revolving credit facilities $ 168,500 $ — $ — $ 168,500 Accounts payable and accrued liabilities 229,662 19,675 — 249,337 Current liability for pensions and other postretirement employee benefits 7,631 — — 7,631 Total current liabilities 405,793 19,675 — 425,468 Long-term debt 570,716 — — 570,716 Liability for pensions and other postretirement employee benefits 70,934 — — 70,934 Other long-term obligations 42,189 — — 42,189 Accrued taxes 1,959 848 — 2,807 Deferred tax liabilities 95,258 26,087 (2,267 ) 119,078 TOTAL LIABILITIES 1,186,849 46,610 (2,267 ) 1,231,192 Stockholders’ equity excluding 636,136 157,401 (157,401 ) 636,136 Accumulated other comprehensive loss, net of tax (55,416 ) — — (55,416 ) TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY $ 1,767,569 $ 204,011 $ (159,668 ) $ 1,811,912 Clearwater Paper Corporation Consolidating Balance Sheet At December 31, 2017 (In thousands) Issuer Guarantor Subsidiaries Eliminations Total ASSETS Current assets: Cash and cash equivalents $ 15,738 $ — $ — $ 15,738 Receivables, net 125,001 17,064 — 142,065 Taxes receivable 20,242 40 — 20,282 Inventories 228,311 41,594 (3,862 ) 266,043 Other current assets 8,587 74 — 8,661 Total current assets 397,879 58,772 (3,862 ) 452,789 Property, plant and equipment, net 936,659 114,323 — 1,050,982 Goodwill 244,161 — — 244,161 Intangible assets, net 2,089 30,453 — 32,542 Intercompany payable (2,807 ) (1,055 ) 3,862 — Investment in subsidiary 157,000 — (157,000 ) — Other assets, net 21,413 2,696 (2,331 ) 21,778 TOTAL ASSETS $ 1,756,394 $ 205,189 $ (159,331 ) $ 1,802,252 LIABILITIES AND STOCKHOLDERS’ EQUITY Current liabilities: Borrowings under revolving credit facilities $ 155,000 $ — $ — $ 155,000 Accounts payable and accrued liabilities 235,439 21,182 — 256,621 Current liability for pensions and other postretirement employee benefits 7,631 — — 7,631 Total current liabilities 398,070 21,182 — 419,252 Long-term debt 570,524 — — 570,524 Liability for pensions and other postretirement employee benefits 72,469 — — 72,469 Other long-term obligations 43,275 — — 43,275 Accrued taxes 1,928 842 — 2,770 Deferred tax liabilities 94,694 26,165 (2,331 ) 118,528 TOTAL LIABILITIES 1,180,960 48,189 (2,331 ) 1,226,818 Stockholders’ equity excluding 619,417 157,000 (157,000 ) 619,417 Accumulated other comprehensive loss, net of tax (43,983 ) — — (43,983 ) TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY $ 1,756,394 $ 205,189 $ (159,331 ) $ 1,802,252
Condensed Consolidating Statement of Cash Flows	learwater Paper Corporation Consolidating Statement of Cash Flows Three Months Ended March 31, 2018 (In thousands) Issuer Guarantor Subsidiaries Eliminations Total CASH FLOWS FROM OPERATING ACTIVITIES Net earnings $ 5,399 $ 401 $ (3,200 ) $ 2,600 Adjustments to reconcile net earnings to net cash flows from operating activities: Depreciation and amortization 19,958 5,209 — 25,167 Equity-based compensation expense 781 — — 781 Deferred taxes (119 ) (121 ) — (240 ) Employee benefit plans 312 — — 312 Other non-cash adjustments, net 343 (7 ) — 336 Changes in working capital, net 4,661 (3,109 ) (308 ) 1,244 Changes in taxes receivable, net 1,462 1 — 1,463 Other, net (909 ) 99 — (810 ) Net cash flows from operating activities 31,888 2,473 (3,508 ) 30,853 CASH FLOWS FROM INVESTING ACTIVITIES Additions to property, plant and equipment (47,670 ) (760 ) — (48,430 ) Other, net 761 7 768 Net cash flows from investing activities (46,909 ) (753 ) — (47,662 ) CASH FLOWS FROM FINANCING ACTIVITIES Borrowings on revolving credit facilities 87,325 — — 87,325 Repayments of borrowings on revolving credit facilities (73,825 ) — — (73,825 ) Investment from (to) parent (1,788 ) (1,720 ) 3,508 — Other, net (365 ) — — (365 ) Net cash flows from financing activities 11,347 (1,720 ) 3,508 13,135 Decrease in cash and cash equivalents (3,674 ) — — (3,674 ) Cash and cash equivalents at beginning of period 15,738 — — 15,738 Cash and cash equivalents at end of period $ 12,064 $ — $ — $ 12,064 Clearwater Paper Corporation Consolidating Statement of Cash Flows Three Months Ended March 31, 2017 (In thousands) Issuer Guarantor Subsidiaries Eliminations Total CASH FLOWS FROM OPERATING ACTIVITIES Net earnings $ 8,854 $ 415 $ (1,754 ) $ 7,515 Adjustments to reconcile net earnings to net cash flows from operating activities: Depreciation and amortization 18,023 9,534 — 27,557 Equity-based compensation expense 17 — — 17 Deferred taxes 3,808 567 — 4,375 Employee benefit plans (788 ) — — (788 ) Other non-cash adjustments, net 285 370 — 655 Changes in working capital, net (25,829 ) 19,050 5,690 (1,089 ) Changes in taxes receivable, net 11,062 12 (5,477 ) 5,597 Other, net 1,500 199 — 1,699 Net cash flows from operating activities 16,932 30,147 (1,541 ) 45,538 CASH FLOWS FROM INVESTING ACTIVITIES Additions to property, plant and equipment (40,384 ) (1,863 ) — (42,247 ) Other, net 1 367 368 Net cash flows from investing activities (40,383 ) (1,496 ) — (41,879 ) CASH FLOWS FROM FINANCING ACTIVITIES Purchase of treasury stock (4,875 ) — — (4,875 ) Borrowings on revolving credit facilities 91,000 — — 91,000 Repayments of borrowings on revolving credit facilities (96,000 ) — — (96,000 ) Investment from (to) parent 30,525 (32,066 ) 1,541 — Other, net (790 ) — — (790 ) Net cash flows from financing activities 19,860 (32,066 ) 1,541 (10,665 ) Decrease in cash and cash equivalents (3,591 ) (3,415 ) — (7,006 ) Cash and cash equivalents at beginning of period 19,586 3,415 — 23,001 Cash and cash equivalents at end of period $ 15,995 $ — $ — $ 15,995

Nature of Operations and Basi36

Nature of Operations and Basis of Presentation - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		22 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Sep. 30, 2017	Apr. 27, 2018	Dec. 31, 2017	Dec. 15, 2015
Nature of Operations
Incremental direct costs, short-term in nature, expensed when incurred	12 months
revenue recognition, payment terms	30 days
Severance Costs	$ 5.1
Allowance for doubtful accounts	1.3				$ 1.4
Accumulated depreciation	1,656.9				$ 1,636.3
Stock Repurchase Program, Remaining Authorized Repurchase Amount	$ 29.8
Percentage Of Expected Natural Gas Requirement Covered Under Contract	30.00%
Interest Costs Capitalized	$ 0.3	$ 0.8
Shelby paper machine interest cost capitalized	1	$ 0.1
Entity Common Stock, Shares Outstanding				16,461,119
Common Stock
Nature of Operations
Common stock repurchase authorized						$ 100
Number of shares repurchased (in shares)		84,750	1,440,696
Treasury Stock Acquired, Average Cost Per Share		$ 57.53
Consumer Products
Nature of Operations
Severance Costs	$ 1.4
Consumer Products \| Oklahoma City [Domain]
Nature of Operations
Other Nonrecurring Expense, Planned Permaent Facility Closure		$ 5.7
Restructuring and Related Cost, Accelerated Depreciation		$ 3.7

Recently Adopted and New Acco37

Recently Adopted and New Accounting Standards Recently Adopted and New Accounting Standards (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Reclassification of the income tax effects of the Tax Cuts and Jobs Act	$ (12,852)
Operating Leases, Future Minimum Payments Due		$ 75,300

Inventories (Detail)

Inventories (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Inventory Disclosure [Abstract]
Pulp, paperboard and tissue products	$ 160,656	$ 165,281
Materials and supplies	86,714	85,987
Logs, pulpwood, chips and sawdust	12,062	14,775
Inventories	$ 259,432	$ 266,043

Intangible Assets (Detail)

Intangible Assets (Detail) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
Intangible Assets (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Amortization of Intangible Assets	$ 2,000	$ 1,900
Historical Cost	69,759		$ 70,333
Accumulated Amortization	(39,167)		(37,791)
Net Balance	$ 30,592		$ 32,542
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Useful Life	9 years 4 months		9 years 4 months
Historical Cost	$ 62,401		$ 62,401
Accumulated Amortization	(35,735)		(34,061)
Net Balance	$ 26,666		$ 28,340
Tradenames and trademarks
Finite-Lived Intangible Assets [Line Items]
Useful Life	7 years 5 months		7 years 5 months
Historical Cost	$ 6,786		$ 6,786
Accumulated Amortization	(3,257)		(3,000)
Net Balance	$ 3,529		$ 3,786
Non-compete agreements
Finite-Lived Intangible Assets [Line Items]
Useful Life			5 years
Historical Cost			$ 574
Accumulated Amortization			(574)
Net Balance			0
Other Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Useful Life	6 years
Historical Cost	$ 572		572
Accumulated Amortization	(175)		(156)
Net Balance	$ 397		$ 416

Taxes - Additional Information

Taxes - Additional Information (Detail)	3 Months Ended
Taxes - Additional Information (Detail)	Mar. 31, 2018Rate	Mar. 31, 2017Rate
Operating Loss Carryforwards [Line Items]
Estimated Annual Effective Tax Rate	25.00%	34.00%

Accounts Payable and Accrued 41

Accounts Payable and Accrued Liabilities (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Accounts Payable and Accrued Liabilities [Abstract]
Trade accounts payable	$ 180,394	$ 169,293
Accrued wages, salaries and employee benefits	32,538	41,979
Accrued discounts and allowances	7,142	7,283
Accrued taxes other than income taxes payable	7,372	6,907
Accrued utilities	5,994	6,759
Accrued interest	5,549	12,723
Other	10,348	11,677
Accounts payable and accrued liabilities	$ 249,337	$ 256,621

Debt - Additional Information (

Debt - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017	Jan. 21, 2013
Debt Instrument [Line Items]
Line of Credit Facility, Fair Value of Amount Outstanding	$ 168,417		$ 154,882
Line of Credit, Current	168,500		155,000
Repayments of Lines of Credit	73,825	$ 96,000
Senior Notes Due Twenty Twenty-Three [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount				$ 275,000
Debt instrument, interest rate				4.50%
Revolving Credit Facility
Debt Instrument [Line Items]
Outstanding stand by letters of credit	7,600
Credit facility available to draw	123,900
Reported Value Measurement [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Fair Value of Amount Outstanding	$ 168,500		$ 155,000

Other Long-Term Obligations (De

Other Long-Term Obligations (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Other Liabilities, Noncurrent [Abstract]
Long-term lease obligations, net of current portion	$ 26,205	$ 26,460
Deferred proceeds	5,309	5,576
Deferred compensation	4,905	5,023
Other	5,770	6,216
Other long-term obligations	$ 42,189	$ 43,275

Reclassification out of Accum44

Reclassification out of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Reclassification Out of Accumulated Other Comprehensive Income [Line Items]
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, after Tax	$ (1,728)	$ (631)
Period opening balance	(43,983)
Net current period other comprehensive income ending balance	1,419	401
Period closing balance	(55,416)		$ (43,983)
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, after Tax	(309)	(230)	(230)
Other comprehensive income (loss), tax	500	300
Reclassification of the income tax effects of the Tax Cuts and Jobs Act	(12,852)
Defined Benefit Pension Plan Adjustments
Reclassification Out of Accumulated Other Comprehensive Income [Line Items]
Period opening balance	(43,983)	(51,753)	(51,753)
Net current period other comprehensive income ending balance	1,419	401
Period closing balance	$ (55,416)	$ (51,352)	$ (43,983)

Pension and Other Postretirem45

Pension and Other Postretirement Employee Benefit Plans - Additional Information (Detail 1) - USD ($) $ in Thousands		3 Months Ended		12 Months Ended
		Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year		$ 0
Non-operating pension and other postretirment benefit (costs) income	[1]	1,279	$ (48)
Supplemental Employee Retirement Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Employer contribution		100
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year		400
Non Qualified Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)		11	(1,091)
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)		1,750	1,671
Employer contribution		0		$ 0
Cost of Sales [Member]
Defined Benefit Plan Disclosure [Line Items]
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, before Tax		300	400
Non-operating expense [Member]
Defined Benefit Plan Disclosure [Line Items]
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, before Tax			300
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		$ 200	$ (100)

[1]	2 As a result of the adoption of ASU 2017-07, certain pension and OPEB (costs) income have been reclassified from operating to non-operating income. The service cost component of pension and OPEB costs remains within segment operating income. Refer to Note 2, "Recently Adopted and New Accounting Standards," and Note 10, "Pension and Other Postretirement Benefit Plans," for additional detail.

Pension and Other Postretirem46

Pension and Other Postretirement Employee Benefit Plans Components of Net Periodic Cost of Pension and Other Postretirement Employee Benefit Plans (Detail 2) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Pension Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Service Cost	$ 434	$ 560
Interest cost	3,000	3,278
Expected return on plan assets	(4,254)	(4,694)
Amortization of prior service cost (credit)	0	2
Amortization of actuarial loss	2,570	2,525
Net periodic cost	1,750	1,671
Other Postretirement Employee Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Service Cost	48	68
Interest cost	607	704
Expected return on plan assets	0	0
Amortization of prior service cost (credit)	(419)	(383)
Amortization of actuarial loss	(225)	(1,480)
Net periodic cost	11	(1,091)
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	200	(100)
Cost of Sales [Member]
Defined Benefit Plan Disclosure [Line Items]
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, before Tax	$ 300	$ 400

Earnings per Common Share Recon

Earnings per Common Share Reconciliation of Number of Common Shares Used in Calculating Basic and Diluted Net Earnings Per Share (Detail) - $ / shares		3 Months Ended
		Mar. 31, 2018	Mar. 31, 2017
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Basic average common shares outstanding	[1]	16,476,011	16,484,069
Incremental shares due to:
Restricted stock units		27,261	37,494
Performance shares		65,469	72,124
Incremental Common Shares Attributable to Stock Options		8,670	48,688
Diluted average common shares outstanding		16,577,411	16,642,375
Basic net earnings per common share (in dollars per share)		$ 0.16	$ 0.46
Diluted net earnings per common share (in dollars per share)		$ 0.16	$ 0.45
Anti-dilutive shares excluded from calculation		558,319	355,305

[1]	Basic average common shares outstanding include restricted stock awards that are fully vested, but are deferred for future issuance.

Equity-Based Compensation - Add

Equity-Based Compensation - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of performance share payout measured by total shareholder return		0.00%
Percentage of performance share payout measured by return on invested capital	0.00%	0.00%
Allocated Share-based Compensation Expense	$ 1,490	$ 1,467
Cash paid for minimum tax withholdings	$ 220
Share-based Compensation Arrangement by Share-based Payment Award, Options, Expirations in Period	912
Share-based Compensation Arrangements by Share-based Payment Award, Options, Expirations in Period, Weighted Average Exercise Price	$ 66.97
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Exercisable Options	303,840
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price	$ 63.19
Performance shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated Share-based Compensation Expense	$ 533	596
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated Share-based Compensation Expense	$ 422	292
Shares issued (in shares)	13,221
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested Shares Settled	19,133
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated Share-based Compensation Expense	$ 535	579
Options, Grants in Period, Gross	196,488
Director [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated Share-based Compensation Expense	$ 700	$ 1,500
Deferred Compensation Share-based Arrangements, Liability, Classified, Noncurrent	2,100		$ 3,600
Deferred Compensation Cash-based Arrangements, Liability, Classified, Noncurrent	$ 3,200		$ 2,400
Minimum \| Performance shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share Based Compensation Arrangement By Share Based Payment Award Outstanding Award As Percentage Of Shares Issued	0.00%
Maximum \| Performance shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share Based Compensation Arrangement By Share Based Payment Award Outstanding Award As Percentage Of Shares Issued	200.00%

Equity-Based Compensation Emplo

Equity-Based Compensation Employee Equity Based Compensation Expense (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense	$ 1,490	$ 1,467
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense	422	292
Performance shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense	533	596
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense	$ 535	$ 579

Equity-Based Compensation Summa

Equity-Based Compensation Summary of Number of Share-Based Awards Granted (Detail) - $ / shares	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of performance share payout measured by total shareholder return		0.00%
Percentage of performance share payout measured by return on invested capital	0.00%	0.00%
Percentageofperformancesharepayoutmeasuredbyfreeoperatingcashflow	0.00%
PercentageofperformancesharepayoutADJUSTMENTmeasuredbytotalshareholderreturn	0.00%
Performance shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of share-based awards granted	49,040
Grant-date fair value of awards per share	$ 37.45
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of share-based awards granted	108,816
Grant-date fair value of awards per share	$ 37.45
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grant-date fair value of awards per share	$ 14.51
Options, Grants in Period, Gross	196,488

Fair Value Measurements Estimat

Fair Value Measurements Estimated Fair Values of Financial Instruments (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Line of Credit Facility, Fair Value of Amount Outstanding	$ 168,417	$ 154,882
Line of Credit, Current	168,500	155,000
Cash, restricted cash, and short-term investments (Level 1)	12,064	15,738
Long-term debt (Level 1)	554,875	569,250
Reported Value Measurement [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Line of Credit Facility, Fair Value of Amount Outstanding	168,500	155,000
Cash, restricted cash, and short-term investments (Level 1)	12,064	15,738
Long-term debt (Level 1)	$ 575,000	$ 575,000

Business Interruption and Ins52

Business Interruption and Insurance Recovery (Details) $ in Millions	3 Months Ended
	Mar. 31, 2017USD ($)
Segment Reporting Information [Line Items]
Gain on Business Interruption Insurance Recovery	$ 4.3

Segment Information Reportable

Segment Information Reportable Segments Information (Detail) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2018	Mar. 31, 2017
Segment Reporting Information [Line Items]
Net sales		$ 436,952	$ 437,525
Income from operations		11,539	20,510
Interest expense, net		(8,020)	(8,043)
Non-operating pension and other postretirment benefit (costs) income	[1]	1,279	(48)
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest		2,240	12,515
Depreciation and amortization		25,167	$ 27,557
Severance Costs		$ 5,100
Concentration Risk, Percentage		16.30%	14.90%
Consumer Products
Segment Reporting Information [Line Items]
Net sales		$ 238,842	$ 242,423
Income from operations	[1],[2],[3]	1,629	6,204
Depreciation and amortization	[2]	14,297	18,242
Severance Costs		1,400
Pulp and Paperboard
Segment Reporting Information [Line Items]
Net sales		198,110	195,102
Income from operations	[1],[3]	26,154	27,200
Depreciation and amortization		9,429	8,105
Severance Costs		300
Operating Segments
Segment Reporting Information [Line Items]
Income from operations		27,783	33,404
Corporate
Segment Reporting Information [Line Items]
Income from operations	[1],[3]	(16,244)	(12,894)
Depreciation and amortization		1,441	1,210
Severance Costs		3,400
Oklahoma City [Domain] \| Consumer Products
Segment Reporting Information [Line Items]
Other Nonrecurring Expense, Planned Permaent Facility Closure			5,700
Restructuring and Related Cost, Accelerated Depreciation			3,700
Non-US [Member]
Segment Reporting Information [Line Items]
Net sales		16,132	15,558
UNITED STATES
Segment Reporting Information [Line Items]
Net sales		420,820	421,967
Retail tissue [Domain]
Segment Reporting Information [Line Items]
Net sales		220,885	218,137
Paperboard [Domain]
Segment Reporting Information [Line Items]
Net sales		198,110	195,102
Non-retail tissue [Domain]
Segment Reporting Information [Line Items]
Net sales		16,959	23,993
Other [Domain]
Segment Reporting Information [Line Items]
Net sales		$ 998	$ 293

[1]	2 As a result of the adoption of ASU 2017-07, certain pension and OPEB (costs) income have been reclassified from operating to non-operating income. The service cost component of pension and OPEB costs remains within segment operating income. Refer to Note 2, "Recently Adopted and New Accounting Standards," and Note 10, "Pension and Other Postretirement Benefit Plans," for additional detail.
[2]	1 Operating income for the Consumer Products segment for the three months ended March 31, 2017 includes $5.7 million of costs associated with the closure of the Oklahoma City facility. These costs include $3.7 million of accelerated depreciation.
[3]	3 Income (loss) from operations for the Consumer Products, Pulp and Paperboard and Corporate segments include $1.4 million, $0.3 million and $3.4 million, respectively, of expenses associated with our selling, general and administrative cost control measures.

Supplemental Guarantor Financ54

Supplemental Guarantor Financial Information Condensed Consolidating Statement of Operations and Comprehensive Income (Loss) (Detail) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2018	Mar. 31, 2017	Jan. 21, 2013
Condensed Financial Statements, Captions [Line Items]
Net sales		$ 436,952	$ 437,525
Cost and expenses:
Cost of sales		(392,433)	(387,060)
Selling, general and administrative expenses		(32,980)	(29,955)
Total operating costs and expenses		(425,413)	(417,015)
Income (loss) from operations		11,539	20,510
Interest expense, net		(8,020)	(8,043)
Non-operating pension and other postretirment benefit (costs) income	[1]	(1,279)	48
Earnings (loss) before income taxes		2,240	12,515
Income tax (provision) benefit		360	(5,000)
Equity in income (loss) of subsidiary		0	0
Net earnings (loss)		2,600	7,515
Other comprehensive income, net of tax		1,419	401
Comprehensive income		4,019	7,916
Issuer
Condensed Financial Statements, Captions [Line Items]
Net sales		455,177	420,215
Cost and expenses:
Cost of sales		(412,957)	(374,481)
Selling, general and administrative expenses		(27,632)	(23,565)
Total operating costs and expenses		(440,589)	(398,046)
Income (loss) from operations		14,588	22,169
Interest expense, net		(7,929)	(7,992)
Non-operating pension and other postretirment benefit (costs) income		(1,279)	48
Earnings (loss) before income taxes		5,380	14,225
Income tax (provision) benefit		(382)	(5,786)
Equity in income (loss) of subsidiary		401	415
Net earnings (loss)		5,399	8,854
Other comprehensive income, net of tax		1,419	401
Comprehensive income		6,818	9,255
Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Net sales		46,213	76,549
Cost and expenses:
Cost of sales		(40,360)	(69,738)
Selling, general and administrative expenses		(5,348)	(6,390)
Total operating costs and expenses		(45,708)	(76,128)
Income (loss) from operations		505	421
Interest expense, net		(91)	(51)
Non-operating pension and other postretirment benefit (costs) income		0	0
Earnings (loss) before income taxes		414	370
Income tax (provision) benefit		(13)	45
Equity in income (loss) of subsidiary		0	0
Net earnings (loss)		401	415
Other comprehensive income, net of tax		0	0
Comprehensive income		401	415
Eliminations
Condensed Financial Statements, Captions [Line Items]
Net sales		(64,438)	(59,239)
Cost and expenses:
Cost of sales		60,884	57,159
Selling, general and administrative expenses		0	0
Total operating costs and expenses		60,884	57,159
Income (loss) from operations		(3,554)	(2,080)
Interest expense, net		0	0
Non-operating pension and other postretirment benefit (costs) income		0	0
Earnings (loss) before income taxes		(3,554)	(2,080)
Income tax (provision) benefit		755	741
Equity in income (loss) of subsidiary		(401)	(415)
Net earnings (loss)		(3,200)	(1,754)
Other comprehensive income, net of tax		0	0
Comprehensive income		$ (3,200)	$ (1,754)
Senior Notes Due Twenty Twenty-Three [Member]
Condensed Financial Statements, Captions [Line Items]
Debt Instrument, Face Amount				$ 275,000
Cost and expenses:
Debt Instrument, Interest Rate, Stated Percentage				4.50%

[1]	2 As a result of the adoption of ASU 2017-07, certain pension and OPEB (costs) income have been reclassified from operating to non-operating income. The service cost component of pension and OPEB costs remains within segment operating income. Refer to Note 2, "Recently Adopted and New Accounting Standards," and Note 10, "Pension and Other Postretirement Benefit Plans," for additional detail.

Supplemental Guarantor Financ55

Supplemental Guarantor Financial Information Condensed Consolidating Balance Sheet (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2016
Current assets:
Cash	$ 12,064	$ 15,738	$ 15,995	$ 23,001
Receivables, net	137,622	142,065
Taxes receivable	18,819	20,282
Inventories	259,432	266,043
Other Assets, Current	8,740	8,661
Total current assets	436,677	452,789
Property, plant and equipment, net	1,077,643	1,050,982
Goodwill	244,161	244,161
Intangible assets, net	30,592	32,542
Investment in subsidiary	0	0
Other assets, net	22,839	21,778
TOTAL ASSETS	1,811,912	1,802,252
Line of Credit, Current	168,500	155,000
Current liabilities:
Accounts payable and accrued liabilities	249,337	256,621
Current liability for pensions and other postretirement employee benefits	7,631	7,631
Total current liabilities	425,468	419,252
Long-term debt	570,716	570,524
Liability for pensions and other postretirement employee benefits	70,934	72,469
Other long-term obligations	42,189	43,275
Accrued taxes	2,807	2,770
Deferred Tax Liabilities, Gross, Noncurrent	119,078	118,528
Liabilities	1,231,192	1,226,818
Accumulated other comprehensive loss, net of tax	(55,416)	(43,983)
Stockholders' equity excluding accumulated other comprehensive loss	636,136	619,417
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	1,811,912	1,802,252
Issuer
Current assets:
Cash	12,064	15,738	15,995	19,586
Receivables, net	118,734	125,001
Taxes receivable	18,780	20,242
Inventories	221,221	228,311
Other Assets, Current	8,463	8,587
Total current assets	379,262	397,879
Property, plant and equipment, net	966,641	936,659
Goodwill	244,161	244,161
Intangible assets, net	1,828	2,089
Intercompany receivable (payable)	(4,185)	(2,807)
Investment in subsidiary	157,401	157,000
Other assets, net	22,461	21,413
TOTAL ASSETS	1,767,569	1,756,394
Line of Credit, Current	168,500	155,000
Current liabilities:
Accounts payable and accrued liabilities	229,662	235,439
Current liability for pensions and other postretirement employee benefits	7,631	7,631
Total current liabilities	405,793	398,070
Long-term debt	570,716	570,524
Liability for pensions and other postretirement employee benefits	70,934	72,469
Other long-term obligations	42,189	43,275
Accrued taxes	1,959	1,928
Deferred Tax Liabilities, Gross, Noncurrent	95,258	94,694
Liabilities	1,186,849	1,180,960
Accumulated other comprehensive loss, net of tax	(55,416)	(43,983)
Stockholders' equity excluding accumulated other comprehensive loss	636,136	619,417
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	1,767,569	1,756,394
Guarantor Subsidiaries
Current assets:
Cash	0	0	0	3,415
Receivables, net	18,888	17,064
Taxes receivable	39	40
Inventories	41,765	41,594
Other Assets, Current	277	74
Total current assets	60,969	58,772
Property, plant and equipment, net	111,002	114,323
Goodwill	0	0
Intangible assets, net	28,764	30,453
Intercompany receivable (payable)	631	(1,055)
Investment in subsidiary	0	0
Other assets, net	2,645	2,696
TOTAL ASSETS	204,011	205,189
Line of Credit, Current	0	0
Current liabilities:
Accounts payable and accrued liabilities	19,675	21,182
Current liability for pensions and other postretirement employee benefits	0	0
Total current liabilities	19,675	21,182
Long-term debt	0	0
Liability for pensions and other postretirement employee benefits	0	0
Other long-term obligations	0	0
Accrued taxes	848	842
Deferred Tax Liabilities, Gross, Noncurrent	26,087	26,165
Liabilities	46,610	48,189
Accumulated other comprehensive loss, net of tax	0	0
Stockholders' equity excluding accumulated other comprehensive loss	157,401	157,000
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	204,011	205,189
Eliminations
Current assets:
Cash	0	0	$ 0	$ 0
Receivables, net	0	0
Taxes receivable	0	0
Inventories	(3,554)	(3,862)
Other Assets, Current	0	0
Total current assets	(3,554)	(3,862)
Property, plant and equipment, net	0	0
Goodwill	0	0
Intangible assets, net	0	0
Intercompany receivable (payable)	3,554	3,862
Investment in subsidiary	(157,401)	(157,000)
Other assets, net	(2,267)	(2,331)
TOTAL ASSETS	(159,668)	(159,331)
Line of Credit, Current	0	0
Current liabilities:
Accounts payable and accrued liabilities	0	0
Current liability for pensions and other postretirement employee benefits	0	0
Total current liabilities	0	0
Long-term debt	0	0
Liability for pensions and other postretirement employee benefits	0	0
Other long-term obligations	0	0
Accrued taxes	0	0
Deferred Tax Liabilities, Gross, Noncurrent	(2,267)	(2,331)
Liabilities	(2,267)	(2,331)
Accumulated other comprehensive loss, net of tax	0	0
Stockholders' equity excluding accumulated other comprehensive loss	(157,401)	(157,000)
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ (159,668)	$ (159,331)

Supplemental Guarantor Financ56

Supplemental Guarantor Financial Information Condensed Consolidating Statement of Cash Flows (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
CASH FLOWS FROM OPERATING ACTIVITIES
Net earnings (loss)	$ 2,600	$ 7,515
Adjustments to reconcile net earnings to net cash provided by (used in) operating activities:
Depreciation and amortization	25,167	27,557
Equity-based compensation expense	781	17
Deferred tax expense (benefit)	(240)	4,375
Employee benefit plans	(312)	788
Adjustments, Noncash Items, to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities	336	655
Changes in working capital, net	1,244	(1,089)
Change in taxes receivable, net	1,463	5,597
Other Operating Activities, Cash Flow Statement	(810)	1,699
Net cash provided by operating activities	30,853	45,538
CASH FLOWS FROM INVESTING ACTIVITIES
Additions to plant and equipment	(48,430)	(42,247)
Payments for (Proceeds from) Other Investing Activities	768	368
Net cash used for investing activities	(47,662)	(41,879)
CASH FLOWS FROM FINANCING ACTIVITIES
Payments for Repurchase of Common Stock	0	(4,875)
Investment (to) from Parent	0	0
Proceeds from Lines of Credit	87,325	91,000
Repayments of Lines of Credit	(73,825)	(96,000)
Payment of tax withholdings on equity-based payment arrangements	(220)
Proceeds from (Payments for) Other Financing Activities	(365)	(790)
Net cash (used for) provided by financing activities	13,135	(10,665)
Decrease in cash and cash equivalents	(3,674)	(7,006)
Cash at beginning of period	15,738	23,001
Cash at end of period	12,064	15,995
Issuer
CASH FLOWS FROM OPERATING ACTIVITIES
Net earnings (loss)	5,399	8,854
Adjustments to reconcile net earnings to net cash provided by (used in) operating activities:
Depreciation and amortization	19,958	18,023
Equity-based compensation expense	781	17
Deferred tax expense (benefit)	(119)	3,808
Employee benefit plans	(312)	788
Adjustments, Noncash Items, to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities	343	285
Changes in working capital, net	4,661	(25,829)
Change in taxes receivable, net	1,462	11,062
Other Operating Activities, Cash Flow Statement	(909)	1,500
Net cash provided by operating activities	31,888	16,932
CASH FLOWS FROM INVESTING ACTIVITIES
Additions to plant and equipment	(47,670)	(40,384)
Payments for (Proceeds from) Other Investing Activities	761	1
Net cash used for investing activities	(46,909)	(40,383)
CASH FLOWS FROM FINANCING ACTIVITIES
Payments for Repurchase of Common Stock		(4,875)
Investment (to) from Parent	(1,788)	30,525
Proceeds from Lines of Credit	87,325	91,000
Repayments of Lines of Credit	(73,825)	(96,000)
Proceeds from (Payments for) Other Financing Activities	(365)	(790)
Net cash (used for) provided by financing activities	11,347	19,860
Decrease in cash and cash equivalents	(3,674)	(3,591)
Cash at beginning of period	15,738	19,586
Cash at end of period	12,064	15,995
Guarantor Subsidiaries
CASH FLOWS FROM OPERATING ACTIVITIES
Net earnings (loss)	401	415
Adjustments to reconcile net earnings to net cash provided by (used in) operating activities:
Depreciation and amortization	5,209	9,534
Equity-based compensation expense	0	0
Deferred tax expense (benefit)	(121)	567
Employee benefit plans	0	0
Adjustments, Noncash Items, to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities	(7)	370
Changes in working capital, net	(3,109)	19,050
Change in taxes receivable, net	1	12
Other Operating Activities, Cash Flow Statement	99	199
Net cash provided by operating activities	2,473	30,147
CASH FLOWS FROM INVESTING ACTIVITIES
Additions to plant and equipment	(760)	(1,863)
Payments for (Proceeds from) Other Investing Activities	7	367
Net cash used for investing activities	(753)	(1,496)
CASH FLOWS FROM FINANCING ACTIVITIES
Payments for Repurchase of Common Stock		0
Investment (to) from Parent	(1,720)	(32,066)
Proceeds from Lines of Credit	0	0
Repayments of Lines of Credit	0	0
Proceeds from (Payments for) Other Financing Activities	0	0
Net cash (used for) provided by financing activities	(1,720)	(32,066)
Decrease in cash and cash equivalents	0	(3,415)
Cash at beginning of period	0	3,415
Cash at end of period	0	0
Eliminations
CASH FLOWS FROM OPERATING ACTIVITIES
Net earnings (loss)	(3,200)	(1,754)
Adjustments to reconcile net earnings to net cash provided by (used in) operating activities:
Depreciation and amortization	0	0
Equity-based compensation expense	0	0
Deferred tax expense (benefit)	0	0
Employee benefit plans	0	0
Adjustments, Noncash Items, to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities	0	0
Changes in working capital, net	(308)	5,690
Change in taxes receivable, net	0	(5,477)
Other Operating Activities, Cash Flow Statement	0	0
Net cash provided by operating activities	(3,508)	(1,541)
CASH FLOWS FROM INVESTING ACTIVITIES
Additions to plant and equipment	0	0
Payments for (Proceeds from) Other Investing Activities
Net cash used for investing activities	0	0
CASH FLOWS FROM FINANCING ACTIVITIES
Payments for Repurchase of Common Stock		0
Investment (to) from Parent	3,508	1,541
Proceeds from Lines of Credit	0	0
Repayments of Lines of Credit	0	0
Proceeds from (Payments for) Other Financing Activities	0	0
Net cash (used for) provided by financing activities	3,508	1,541
Decrease in cash and cash equivalents	0	0
Cash at beginning of period	0	0
Cash at end of period	$ 0	$ 0