Clearwater Paper (CLW) 10-Q 31 Oct 13 2013 Q3 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	9 Months Ended
	Sep. 30, 2013	Oct. 25, 2013
Document and Entity Information [Abstract]	'	'
Document Type	'10-Q	'
Amendment Flag	'false	'
Document Period End Date	30-Sep-13	'
Document Fiscal Year Focus	'2013	'
Document Fiscal Period Focus	'Q3	'
Trading Symbol	'CLW	'
Entity Registrant Name	'CLEARWATER PAPER CORP	'
Entity Central Index Key	'0001441236	'
Current Fiscal Year End Date	'--09-30	'
Entity Filer Category	'Large Accelerated Filer	'
Entity Common Stock, Shares Outstanding	'	21,059,758

Condensed_Consolidated_Stateme

Condensed Consolidated Statements of Operations (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Income Statement [Abstract]	'	'	'	'
Net sales	$487,845	$480,233	$1,419,671	$1,411,603
Costs and expenses:	'	'	'	'
Cost of sales	-441,237	-409,822	-1,269,967	-1,211,444
Selling, general and administrative expenses	-27,766	-30,649	-88,665	-90,252
Total operating costs and expenses	-469,003	-440,471	-1,358,632	-1,301,696
Income from operations	18,842	39,762	61,039	109,907
Interest expense, net	-10,708	-7,900	-32,784	-26,775
Gains (Losses) on Extinguishment of Debt	0	0	-17,058	0
Earnings (loss) before income taxes	8,134	31,862	11,197	83,132
Income tax provision	5,183	-12,798	12,896	-38,853
Net earnings (loss)	$13,317	$19,064	$24,093	$44,279
Net earnings per common share:	'	'	'	'
Basic (in dollars per share)	$0.60	$0.82	$1.08	$1.90
Diluted (in dollars per share)	$0.60	$0.80	$1.07	$1.87

Condensed_Consolidated_Stateme1

Condensed Consolidated Statements of Comprehensive Income (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013		Sep. 30, 2012
Net earnings	$13,317	$19,064	$24,093		$44,279
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Net Prior Service Cost (Credit) Arising During Period, Net of Tax	0	0	466		0
Defined benefit pension and other postretirement employee benefits:	'	'	'		'
Amortization of actuarial loss included in net periodic cost, net of tax expense of $1,190, $818, $3,571 and $2,452	2,249	1,831	6,745		5,493
Amortization of prior service credit included in net periodic cost, net of tax benefit of $202, $59, $605 and $176	25	310	75		930
Amortization of deferred taxes related to actuarial gain on other postretirement employee benefit obligations	53	0	53		0
Other comprehensive income (loss), net of tax	2,277	1,521	7,189	[1]	4,563
Comprehensive income	$15,594	$20,585	$31,282		$48,842
[1]	Net periodic costs associated with our pension and other postretirement employee benefit, or OPEB, plans included in other comprehensive income and reclassified from accumulated other comprehensive loss includes $11.1 million of actuarial loss amortization, $0.8 million of curtailments, $0.1 million of deferred tax amortization related to actuarial gains and $0.1 million related to prior service credit, net of tax of $4.6 million. These accumulated other comprehensive loss components, with the exception of the deferred tax amortization related to actuarial gains, are included in the computation of net periodic pension and OPEB costs in Note 10, “Pension and Other Postretirement Employee Benefit Plans.”

Condensed_Consolidated_Stateme2

Condensed Consolidated Statements of Comprehensive Income (Parenthetical) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Plan Amendments, Tax Effect	$0	$0	$303	$0
Amortization of actuarial loss included in net periodic cost, tax expense	1,462	1,190	4,385	3,571
Amortization of prior service credit included in net periodic cost, tax benefit	($17)	($202)	($49)	($605)

Condensed_Consolidated_Balance

Condensed Consolidated Balance Sheets (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Current assets:	'	'
Cash	$20,929	$12,579
Restricted cash	1,500	0
Short-term investments	89,000	20,000
Receivables, net	168,519	154,143
Taxes receivable	8,380	20,828
Inventories	253,440	231,466
Deferred tax assets	28,356	17,136
Prepaid expenses	8,210	12,314
Total current assets	578,334	468,466
Property, plant and equipment, net	872,762	877,377
Goodwill	229,533	229,533
Intangible assets, net	42,467	47,753
Other assets, net	10,255	10,327
TOTAL ASSETS	1,733,351	1,633,456
Current liabilities:	'	'
Accounts payable and accrued liabilities	204,081	165,596
Current liability for pensions and other postretirement employee benefits	9,137	9,137
Total current liabilities	213,218	174,733
Long-term debt	650,000	523,933
Liability for pensions and other postretirement employee benefits	187,410	204,163
Other long-term obligations	51,021	50,910
Accrued taxes	68,164	78,699
Deferred tax liabilities	66,253	60,124
Stockholders' equity:	'	'
Preferred stock, par value $0.0001 per share, 5,000,000 authorized shares, no shares issued	'	'
Common stock, par value $0.0001 per share, 100,000,000 authorized shares, 23,825,750 and 23,101,710 shares issued	2	2
Additional paid-in capital	327,793	326,901
Retained earnings	383,777	359,684
Treasury stock, at cost, common shares-622,082 and 333,300 shares repurchased	-105,783	-30,000
Accumulated other comprehensive loss, net of tax	-108,504	-115,693
Total stockholders' equity	497,285	540,894
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$1,733,351	$1,633,456

Condensed_Consolidated_Balance1

Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Sep. 30, 2013	Dec. 31, 2012
Preferred stock, par value (in dollars per share)	$0.00	$0.00
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)	$0.00	$0.00
Common stock, authorized (in shares)	100,000,000	100,000,000
Common stock, shares issued (in shares)	23,983,398	23,840,683
Treasury stock, shares (in shares)	2,428,880	853,470

Condensed_Consolidated_Stateme3

Condensed Consolidated Statements of Cash Flows (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
CASH FLOWS FROM OPERATING ACTIVITIES	'	'
Net earnings	$24,093	$44,279
Adjustments to reconcile net earnings to net cash provided by operating activities:	'	'
Depreciation and amortization	67,584	58,477
Deferred tax expense	-9,678	13,257
Equity-based compensation expense	7,758	7,681
Employee benefit plans	7,801	6,697
Amortization of Financing Costs and Discounts	4,490	1,508
Gain (Loss) on Disposition of Assets	35	1,501
Changes in working capital, net	47	51,434
Change in taxes receivable, net	12,448	-1,918
Excess tax benefits from equity-based payment arrangements	0	-9,193
Change in non-current accrued taxes	-10,535	4,161
Funding of qualified pension plans	-12,611	-17,625
Other Operating Activities, Cash Flow Statement	108	324
Net cash provided by operating activities	91,540	160,583
CASH FLOWS FROM INVESTING ACTIVITIES	'	'
Change in short-term investments, net	-69,000	18,001
Additions to plant and equipment	-54,400	-155,365
Net cash used for investing activities	-123,400	-136,329
Proceeds from Issuance of Long-term Debt	275,000	0
CASH FLOWS FROM FINANCING ACTIVITIES	'	'
Repayment of Cellu Tissue debt	-150,000	0
Purchase of treasury stock	-75,783	-9,355
Excess tax benefits from equity-based payment arrangements	0	9,193
Payment of tax withholdings on equity-based payment arrangements	-4,173	-12,965
Payments of Debt Issuance Costs	-4,834	-2
Net cash (used for) provided by financing activities	40,210	-13,129
Increase in cash	8,350	11,125
Cash at beginning of period	12,579	8,439
Cash at end of period	20,929	19,564
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:	'	'
Cash paid for interest, net of amounts capitalized	22,788	12,366
Cash paid for income taxes	2,400	17,740
Cash received from income tax refunds	820	1,607
Capital Expenditures Incurred but Not yet Paid	8,239	3,258
Proceeds from Sale of Productive Assets	$0	$1,035

Nature_of_Operations_and_Basis

Nature of Operations and Basis of Presentation	9 Months Ended
	Sep. 30, 2013
Accounting Policies [Abstract]	'
Nature of Operations and Basis of Presentation	'
	Nature of Operations and Basis of Presentation
	GENERAL
	Clearwater Paper Corporation is a leading North American producer of private label tissue and paperboard products. We manufacture quality consumer tissue, away-from-home tissue, parent rolls (non-converted tissue product), machine-glazed tissue, bleached paperboard and pulp at 15 manufacturing locations in the U.S. and Canada. Our private label consumer tissue products - facial and bath tissue, paper towels and napkins - are used primarily at-home and are principally sold to major retailers and wholesale distributors, which include grocery, drug, mass-merchant and discount stores. Our paperboard is sold primarily in the high-end segment of the packaging industry, which demands high-quality construction and print surfaces for graphics. Our products are made primarily from wood fiber pulp.
	On March 6, 2013, we announced the planned permanent closure of our Thomaston, Georgia converting and distribution facility. The shutdown is occurring gradually as converting lines are being relocated and installed at our other facilities, with all operations at Thomaston expected to cease by the end of 2013. As of September 30, 2013,we have incurred $2.9 million of costs associated with the closure, of which $1.7 million was incurred during the third quarter of 2013.
	FINANCIAL STATEMENT PREPARATION AND PRESENTATION
	The accompanying Consolidated Balance Sheets at September 30, 2013 and December 31, 2012, the related Consolidated Statements of Operations and Comprehensive Income for the three months and nine months ended September 30, 2013 and 2012, and the Consolidated Statements of Cash Flows for the nine months ended September 30, 2013 and 2012, 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 statement 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, 2012, as filed with the Securities and Exchange Commission, or SEC, on February 22, 2013.
	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 requiring 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, 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.
	SHORT-TERM INVESTMENTS AND RESTRICTED CASH
	Our short-term investments are invested primarily in demand deposits, which have very short maturity periods, and therefore earn an interest rate commensurate with low-risk instruments. We do not attempt to hedge our exposure to interest rate risk for our short-term investments. Our restricted cash in which the underlying instrument has a term of greater than twelve months from the balance sheet date is classified as non-current and is included in “Other assets, net” on our Consolidated Balance Sheet. As of September 30, 2013, substantially all restricted cash balances were classified as current and included in "Restricted cash" on our Consolidated Balance Sheet, compared to approximately $1.5 million of restricted cash classified as non-current and included in "Other assets, net" as of December 31, 2012.
	TRADE ACCOUNTS RECEIVABLE
	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 September 30, 2013 and December 31, 2012, we had allowances for doubtful accounts of $1.7 million and $1.6 million, respectively.
	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 $1,461.6 million and $1,401.4 million at September 30, 2013 and December 31, 2012, respectively.
	We did not capitalize interest for the three months and nine months ended September 30, 2013. For the three months and nine months ended September 30, 2012, we capitalized $4.1 million and $9.0 million, respectively, of interest expense associated with our through-air-dried, or TAD, tissue expansion project, which includes the construction of our new tissue manufacturing and converting facilities in Shelby, North Carolina, and upgrades to our tissue manufacturing facility in Las Vegas, Nevada.
	STOCKHOLDERS’ EQUITY
	On January 17, 2013, we announced that our Board of Directors had approved a new stock repurchase program authorizing the repurchase of up to $100.0 million of our common stock. The repurchases were authorized to be carried out by the utilization of a number of different methods, including but not limited to, open market purchases, accelerated buybacks and negotiated block purchases, and were completed in 2013.
	On March 1, 2013, we entered into an accelerated stock buyback, or ASB, agreement with a major financial institution to repurchase an aggregate of $50.0 million of our outstanding common stock. The total aggregate number of shares repurchased pursuant to this agreement was determined by reference to our average stock prices, less a fixed discount, over the term of the agreement. During the first quarter of 2013, we received 826,617 shares of common stock, which was 80% of the total shares expected to be repurchased under the ASB agreement, and represented a total of approximately $40.8 million of the $50.0 million paid to the financial institution. During the third quarter of 2013, the ASB agreement was completed and we received an additional 212,896 shares of our outstanding common stock, which represented the remaining proceeds paid to the financial institution. In total, 1,039,513 shares of our outstanding common stock were delivered under the ASB agreement at an average repurchase price of $48.10 per share.
	We have also repurchased 535,897 shares of our outstanding common stock on the open market as of September 30, 2013, of which 327,315 shares were repurchased during the third quarter at an average price of $48.27 per share. As of September 30, 2013, $24.2 million of the authorized repurchase program remained. In October 2013, we repurchased an additional 494,760 shares of our outstanding common stock on the open market at an average price of $48.95 per share, which completed the remaining balance of our authorized stock repurchase program. We account for share repurchases under the program as treasury stock and record the amounts paid to repurchase shares at cost as a component of stockholders' equity. We have not retired any treasury shares and may choose to reissue shares held in treasury stock in a future period.
	DERIVATIVES
	We had no activity during the three months and nine months ended September 30, 2013 and 2012 that required hedge or derivative accounting treatment. To help mitigate our exposure to market risk for changes in utility commodity pricing, from time to time we have used firm price contracts to supply a portion of the natural gas requirements for our manufacturing facilities. As of September 30, 2013, these contracts covered approximately 33% of our expected average monthly natural gas requirements for the remainder of 2013, plus lesser amounts for 2014. 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_Accou

Recently Adopted and New Accounting Standards	9 Months Ended
	Sep. 30, 2013
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]	'
Recently Adopted and New Accounting Standards	'
	Recently Adopted and New Accounting Standards
	In February 2013, the Financial Accounting Standards Board issued Accounting Standard Update, or ASU, 2013-02, Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income, which expands the disclosure requirements for amounts reclassified out of accumulated other comprehensive income. This ASU requires an entity to present, either parenthetically on the face of the financial statements where net income is presented or in the notes to the financial statements, the effect of significant items reclassified in their entirety from accumulated other comprehensive income and identification of the respective line items effecting net income for instances when reclassification is required under GAAP. For items that are not required by GAAP to be reclassified in their entirety to net income, an entity is required to cross-reference to other disclosures as required by GAAP. This ASU does not change the current requirements for reporting net income or other comprehensive income in financial statements and is effective prospectively for annual and interim reporting periods beginning after December 15, 2012. We have adopted this ASU, which did not affect our Consolidated Financial Statements.

Inventories

Inventories	9 Months Ended
	Sep. 30, 2013
Inventory Disclosure [Abstract]	'
Inventories	'
	Inventories
	Inventories at the balance sheet dates consist of:
	(In thousands)	September 30,		December 31,
		2013		2012
	Pulp, paperboard and tissue products	$	167,154	$	147,627
	Materials and supplies	68,769		67,889
	Logs, pulpwood, chips and sawdust	17,517		15,950
		$	253,440	$	231,466
	Inventories are stated at the lower of market or cost using the average cost method. The last-in, first-out, or LIFO, method was previously used to determine cost of logs, wood fiber and the majority of lumber until the sale of our Lewiston, Idaho sawmill in November 2011. During the three months ended March 31, 2012, the remaining lumber inventory from the sawmill was sold. The sale of this inventory, which was valued at costs prevailing in prior years under the LIFO method, had the effect of increasing earnings in the period ended March 31, 2012 by an immaterial amount.

Intangible_Assets

Intangible Assets	9 Months Ended
	Sep. 30, 2013
Finite-Lived Intangible Assets, Net [Abstract]	'
Intangible Assets	'
	Intangible Assets
	Intangible assets at the balance sheet dates are comprised of the following:
		September 30, 2013
	(Dollars in thousands, lives in years)	Useful	Historical		Accumulated			Net
		Life	Cost		Amortization			Balance
	Customer relationships	9	$	53,957	$	(15,734	)	$	38,223
	Trade names and trademarks	10	5,300		(1,457		)	3,843
	Non-compete agreements	2.5 - 5.0	1,674		(1,273		)	401
			$	60,931	$	(18,464	)	$	42,467
		December 31, 2012
	(Dollars in thousands, lives in years)	Useful	Historical		Accumulated			Net
		Life	Cost		Amortization			Balance
	Customer relationships	9	$	53,957	$	(11,237	)	$	42,720
	Trade names and trademarks	10	5,300		(1,060		)	4,240
	Non-compete agreements	2.5 - 5.0	1,674		(881		)	793
			$	60,931	$	(13,178	)	$	47,753

Taxes

Taxes	9 Months Ended
	Sep. 30, 2013
Income Tax Disclosure [Abstract]	'
Taxes	'
	Income Taxes
	Consistent with authoritative guidance, our estimated annual effective tax rate is used to allocate our expected annual income tax provision to interim periods. The rate is the ratio of our estimated annual income tax provision to our 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 provision 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.
	For the three and nine months ended September 30, 2013 and 2012, the effective tax rates attributable to continuing operations were as follows:
		Three Months Ended September 30,				Nine Months Ended September 30,
		2013		2012		2013		2012
	Statutory federal income tax rate	35	%	35	%	35	%	35	%
	State taxes, net of credits	1.5		3.6		1.5		3.6
	Change in valuation allowances	3.5		—		3.5		—
	Federal manufacturing deduction	—		(3.0	)	—		(3.0	)
	Settlement of uncertain tax positions	(57.3	)	—		(41.6	)	—
	Interest accrued on uncertain tax positions	8.4		1.2		13.9		1.7
	Cellulosic Biofuel Producer Credit conversion	0.2		—		(36.8	)	3.7
	Additional Cellulosic Biofuel Producer Credits	(43.0	)	3.2		(81.5	)	4.1
	State rate adjustment	(10.5	)	—		(8.1	)	—
	Return to provision adjustments	(0.5	)	0.5		(3.9	)	1.7
	Other	(1.0	)	(0.3	)	2.8		(0.1	)
	Effective tax rate	(63.7	)%	40.2	%	(115.2	)%	46.7	%
	Our estimated annual effective tax rate for the third quarter of 2013 is approximately 39%, compared with approximately 35% for the comparable interim period in 2012. The increase is due to a reduction of the domestic production activities deduction resulting from our election to adopt tax bonus depreciation in 2013 and an increase in the relative weighting of the other permanent items in relation to forecasted book income.
	During the fourth quarter of 2012, the IRS commenced an audit of our tax returns for the tax years ending December 31, 2008 through December 31, 2012. The audit is ongoing, with no defined conclusion date as of September 30, 2013. As part of this process, we identified additional gallons that qualify for the Cellulosic Biofuel Producer Credit that were previously unaccounted for. During the third quarter of 2013, we recognized the benefit related to these gallons, resulting in a favorable adjustment. Also during the quarter, we closed a number of state income tax audits. Based upon the results of those audits, we have released a portion of the reserve for uncertain tax positions relating to certain state tax credits, which resulted in a benefit to income taxes.

Accounts_Payable_and_Accrued_L

Accounts Payable and Accrued Liabilities	9 Months Ended
	Sep. 30, 2013
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)	September 30, 2013		December 31, 2012
	Trade accounts payable	$	111,898	$	75,949
	Accrued wages, salaries and employee benefits	39,184		42,491
	Accrued interest	13,250		5,242
	Accrued taxes other than income taxes payable	9,307		6,993
	Accrued utilities	6,839		8,205
	Accrued discounts and allowances	6,838		4,785
	Accrued transportation	3,011		4,417
	Other	13,754		17,514
		$	204,081	$	165,596

Debt

Debt	9 Months Ended
	Sep. 30, 2013
Debt Disclosure [Abstract]	'
Debt	'
	Debt
	$375 MILLION SENIOR NOTES DUE 2018
	On October 22, 2010, we sold $375 million aggregate principal amount of senior notes, which we refer to as the 2010 Notes. The 2010 Notes mature on November 1, 2018, have an interest rate of 7.125% and were issued at their face value. The issuance of these notes generated net proceeds of $367.5 million after deducting offering expenses.
	The 2010 Notes are guaranteed by all of our direct and indirect domestic subsidiaries. The 2010 Notes will also be guaranteed by each of our future direct and indirect domestic subsidiaries that we do not designate as an unrestricted subsidiary under the indenture governing the 2010 Notes. The 2010 Notes are equal in right of payment with all other existing and future unsecured senior indebtedness and are senior in right of payment to any future subordinated indebtedness. The 2010 Notes are effectively subordinated to all of our existing and future secured indebtedness, including borrowings under our secured revolving credit facility, which is secured by certain of our accounts receivable, inventory and cash. The terms of the 2010 Notes limit our ability and the ability of any restricted subsidiaries to borrow money; pay dividends; redeem or repurchase capital stock; make investments; sell assets; create restrictions on the payment of dividends or other amounts to us from any restricted subsidiaries; enter into transactions with affiliates; enter into sale and lease back transactions; create liens; and consolidate, merge or sell all or substantially all of our assets.
	Prior to November 1, 2013, we may redeem up to 35% of the 2010 Notes at a redemption price equal to 107.125% of the principal amount plus accrued and unpaid interest with the proceeds from one or more qualified equity offerings. We have the option to redeem all or a portion of the 2010 Notes at any time before November 1, 2014 at a redemption price equal to 100% of the principal amount plus accrued and unpaid interest and a “make whole” premium. On or after November 1, 2014, we may redeem all or a portion of the 2010 Notes at specified redemption prices plus accrued and unpaid interest. In addition, we may be required to make an offer to purchase the 2010 Notes upon the sale of certain assets and upon a change of control.
	REDEMPTION OF $150 MILLION SENIOR NOTES DUE 2016 AND ISSUANCE OF $275 MILLION SENIOR NOTES DUE 2023
	In June 2009, we issued senior unsecured notes, which we refer to as the 2009 Notes, in the aggregate principal amount of $150 million. The 2009 Notes were due on June 15, 2016 and had an interest rate of 10.625%. The 2009 Notes were issued at a price equal to 98.792% of their face value.
	We had the option to redeem all or a portion of the 2009 Notes at any time prior to June 15, 2013 at a redemption price equal to 100% of the principal amount thereof plus a “make whole” premium and accrued and unpaid interest. On February 22, 2013, we exercised our option to redeem all of the 2009 Notes at a redemption price equal to approximately $166 million, which consisted of 100% of the principal amount, plus a $12.6 million “make whole” premium and accrued and unpaid interest of approximately $3.0 million. The make whole premium and a portion of the unpaid interest, as well as an unamortized discount and deferred issuance costs associated with the 2009 Notes, were recorded as components of the debt retirement costs totaling $17.1 million in the first quarter of 2013, as included in the accompanying Consolidated Statement of Operations. Proceeds to fund the redemption of the 2009 Notes were made available through the sale of $275 million aggregate principal amount of senior notes on January 23, 2013, which we refer to as the 2013 Notes. The 2013 Notes mature on February 1, 2023, have an interest rate of 4.5% and were issued at their face value. The issuance of these notes generated net proceeds of approximately $271 million after deducting offering expenses.
	The 2013 Notes are guaranteed by all of our direct and indirect domestic subsidiaries. The 2013 Notes will also be guaranteed by each of our future direct and indirect domestic subsidiaries that we do not designate as an unrestricted subsidiary under the indenture governing the 2013 Notes. The 2013 Notes are equal in right of payment with all other existing and future unsecured senior indebtedness and are senior in right of payment to any future subordinated indebtedness. The 2013 Notes are effectively subordinated to all of our existing and future secured indebtedness, including borrowings under our secured revolving credit facility, which is secured by certain of our accounts receivable, inventory and cash. The terms of the 2013 Notes limit our ability and the ability of any restricted subsidiaries to borrow money; pay dividends; redeem or repurchase capital stock; make investments; sell assets; create restrictions on the payment of dividends or other amounts to us from any restricted subsidiaries; enter into transactions with affiliates; enter into sale and lease back transactions; create liens; and consolidate, merge or sell all or substantially all of our assets.
	Prior to February 1, 2016, we may redeem up to 35% of the 2013 Notes at a redemption price equal to 104.5% of the principal amount plus accrued and unpaid interest with the proceeds from one or more qualified equity offerings. We have the option to redeem all or a portion of the 2013 Notes at any time before February 1, 2018 at a redemption price equal to 100% of the principal amount plus accrued and unpaid interest and a “make whole” premium. On or after February 1, 2018, we may redeem all or a portion of the 2013 Notes at specified redemption prices plus accrued and unpaid interest. In addition, we may be required to make an offer to purchase the 2013 Notes upon the sale of certain assets and upon a change of control.
	REVOLVING CREDIT FACILITY
	On November 26, 2008, we entered into a $125 million senior secured revolving credit facility with certain financial institutions. The amount available to us under the revolving credit facility is based on the lesser of 85% of our eligible accounts receivable plus approximately 65% of our eligible inventory, or $125 million. The revolving credit facility has been subsequently amended and expires on September 30, 2016.
	As of September 30, 2013, there were no borrowings outstanding under the credit facility, but approximately $6.6 million of the credit facility was being used to support outstanding standby letters of credit. Loans under the credit facility bear interest (i) for LIBOR loans, LIBOR plus between 1.75% and 2.25% and (ii) for base rate loans, a per annum rate equal to the greater of (a) the prime rate for such day; (b) the federal funds effective rate for such day, plus 0.50%; or (c) LIBOR for a 30-day interest period as determined on such day, plus between 1.25% and 1.75%. The percentage margin on all loans is based on our fixed charge coverage ratio for the most recent four quarters. As of September 30, 2013, we would have been permitted to draw approximately $118.4 million under the credit facility at LIBOR plus 1.75%, or base rate plus 1.25%.
	A minimum fixed charge coverage ratio is the only financial covenant requirement under our credit facility and is triggered when there are any commitments or obligations outstanding and availability falls below 12.5% or an event of default exists, at which time the minimum fixed charge coverage ratio must be at least 1.0-to-1.0. As of September 30, 2013, the fixed charge coverage ratio for the most recent four quarters was 2.6-to-1.0.
	Our obligations under the revolving credit facility are secured by certain of our accounts receivable, inventory and cash. The terms of the credit facility contain various provisions that limit our discretion in the operations of our business by restricting our ability to, among other things, pay dividends; redeem or repurchase capital stock; create, incur or guarantee certain debt; incur liens on certain properties; make capital expenditures; enter into certain affiliate transactions; enter into certain hedging arrangements; and consolidate with or merge with another entity. The revolving credit facility contains usual and customary affirmative and negative covenants and usual and customary events of default.

Other_LongTerm_Obligations

Other Long-Term Obligations	9 Months Ended
	Sep. 30, 2013
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)	September 30, 2013		December 31, 2012
	Long-term lease obligations, net of current portion	$	24,959	$	25,240
	Director and other deferred compensation	12,731		9,939
	Deferred proceeds	10,712		11,668
	Other	2,619		4,063
		$	51,021	$	50,910

Reclassification_out_of_Accumu

Reclassification out of Accumulated Other Comprehensive Income (Notes)	9 Months Ended
	Sep. 30, 2013
Equity [Abstract]	'
Accumulated Other Comprehensive Income [Text Block]	'
	Accumulated Other Comprehensive Loss
	Accumulated other comprehensive loss, net of tax, at the balance sheet dates is comprised of the following:
	(In thousands)	Foreign Currency Translation Adjustments1			Pension and Other Post Retirement Employee Benefit Plans Adjustments			Total
	Balance at December 31, 2012	$	(874	)	$	(114,819	)	$	(115,693	)
	Other comprehensive income, net of tax2	—			7,189			7,189
	Balance at September 30, 2013	$	(874	)	$	(107,630	)	$	(108,504	)
	1	This balance consists of unrealized foreign currency translation adjustments related to the operations of our Canadian subsidiary before its functional currency was changed from Canadian dollars to U.S. dollars in 2012.
	2	Net periodic costs associated with our pension and other postretirement employee benefit, or OPEB, plans included in other comprehensive income and reclassified from accumulated other comprehensive loss includes $11.1 million of actuarial loss amortization, $0.8 million of curtailments, $0.1 million of deferred tax amortization related to actuarial gains and $0.1 million related to prior service credit, net of tax of $4.6 million. These accumulated other comprehensive loss components, with the exception of the deferred tax amortization related to actuarial gains, 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_Postretireme

Pension and Other Postretirement Employee Benefit Plans	9 Months Ended
	Sep. 30, 2013
Compensation and Retirement Disclosure [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 September 30,
	(In thousands)	2013			2012			2013			2012
		Pension Benefit Plans						Other Postretirement
								Employee  Benefit Plans
	Service cost	$	435		$	622		$	138		$	173
	Interest cost	3,343			3,673			1,182			1,454
	Expected return on plan assets	(4,588		)	(4,921		)	—			—
	Amortization of prior service cost (credit)	83			158			(125		)	(670		)
	Amortization of actuarial loss	3,711			3,021			—			—
	Net periodic cost	$	2,984		$	2,553		$	1,195		$	957
		Nine Months Ended September 30,
	(In thousands)	2013			2012			2013			2012
		Pension Benefit Plans						Other Postretirement
								Employee  Benefit Plans
	Service cost	$	1,304		$	1,864		$	414		$	520
	Interest cost	10,031			11,020			3,547			4,361
	Expected return on plan assets	(13,764		)	(14,764		)	—			—
	Amortization of prior service cost (credit)	252			475			(376		)	(2,010		)
	Amortization of actuarial loss	11,130			9,064			—			—
	Curtailments	769			—			—			—
	Net periodic cost	$	9,722		$	7,659		$	3,585		$	2,871
	As discussed in the notes to our Consolidated Financial Statements in our 2012 Form 10-K, our company-sponsored defined benefit pension plans were underfunded by $78.7 million at December 31, 2012. As a result of being underfunded, we are required to make contributions to our qualified pension plans. During the nine months ended September 30, 2013, we contributed $12.6 million to these pension plans. In October 2013, we contributed an additional $2.4 million and we expect to contribute an additional $1.9 million in the remainder of 2013.
	During the nine months ended September 30, 2013, we made contributions of approximately $0.2 million to our company-sponsored non-qualified pension plan, and we estimate contributions will total approximately $0.3 million in 2013. We do not anticipate funding our OPEB plans in 2013 except to pay benefit costs as incurred during the year by plan participants.
	During the three and nine months ended September 30, 2013, $3.4 million and $10.9 million, respectively, of net periodic pension and OPEB costs were charged to cost of sales, and $0.8 million and $2.4 million, respectively, were charged to selling, general and administrative expenses in the accompanying Consolidated Statements of Operations
	During the second quarter of 2013, we recorded a curtailment loss of $0.8 million in net periodic cost, and a corresponding change in other comprehensive income, net of tax, due to the freezing of pension benefits for certain employees at our Lewiston, Idaho pulp and paperboard facility, effective June 30, 2013.

Earnings_per_Common_Share

Earnings per Common Share	9 Months Ended
	Sep. 30, 2013
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 September 30,				Nine Months Ended September 30,
		2013		2012		2013		2012
	Basic average common shares outstanding1	22,026,879		23,360,967		22,388,930		23,337,323
	Incremental shares due to:
	Restricted stock units	69,902		51,230		61,956		43,580
	Performance shares	131,092		287,491		114,369		264,021
	Diluted average common shares outstanding	22,227,873		23,699,688		22,565,255		23,644,924
	Basic net earnings per common share	$	0.6	$	0.82	$	1.08	$	1.9
	Diluted net earnings per common share	0.6		0.8		1.07		1.87
	Anti-dilutive shares excluded from calculation	1,434		29,382		106,265		132,273
	1	Basic average common shares outstanding include restricted stock awards that are fully vested, but are deferred for future issuance.

EquityBased_Compensation

Equity-Based Compensation	9 Months Ended
	Sep. 30, 2013
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 and performance shares, based on estimated fair values.
	EMPLOYEE AWARDS
	Employee equity-based compensation expense was recognized as follows:
		Three Months Ended September 30,					Nine Months Ended September 30,
	(In thousands)	2013			2012		2013		2012
	Restricted stock units	$	462		$	297	$	1,326	$	693
	Performance shares	1,354			1,953		3,741		5,284
	Total employee equity-based compensation	$	1,816		$	2,250	$	5,067	$	5,977
	As provided for in the Clearwater Paper Corporation 2008 Stock Incentive Plan, the performance measure used to determine the number of performance shares ultimately issued is a comparison of the percentile ranking of our total stockholder return compared to the total stockholder return of a selected peer group. The number of shares actually issued, as a percentage of the amount subject to the performance share award, could range from 0%-200%. On December 31, 2012, the service and performance period for 138,226 outstanding performance shares granted in 2010 ended. Those performance shares were settled and distributed in the first quarter of 2013. The number of shares actually settled, as a percentage of the outstanding amount, was 101.4%. After adjusting for the related minimum tax withholdings, a net 93,744 shares were issued in the first quarter of 2013. The related minimum tax withholdings payment made in the first quarter of 2013 in connection with issued shares was $2.2 million.
	During the third quarter of 2013, we distributed a portion of restricted stock units related to certain executive compensation that was deferred in 2012 to preserve tax deductibility for certain compensation that was above the Internal Revenue Code section 162(m) threshold. After adjusting for minimum tax withholdings of the deferred shares, a net 48,971 shares were distributed during the third quarter of 2013. The minimum tax withholdings payment made in 2013 in connection with the issued shares was $2.0 million.
	The following table summarizes the number of share-based awards granted under our 2008 Stock Incentive Plan during the nine months ended September 30, 2013 and the grant-date fair value of the awards:
		Nine Months Ended
		30-Sep-13
		Number of		Average Fair Value of
		Awards		Award Per Share
	Restricted stock units	72,702		$	43.44
	Performance shares	124,513		63.46
	DIRECTOR AWARDS
	Each year, 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 expense of $0.4 million and $2.7 million for the three and nine months ended September 30, 2013, respectively, compared to equity-based compensation expense of $1.8 million and $1.7 million, for the same periods in 2012. At September 30, 2013 and December 31, 2012, the liability amounts associated with director equity-based compensation included in "Other long-term obligations" on the accompanying Consolidated Balance Sheets were $11.8 million and $9.1 million, respectively.

Fair_Value_Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2013
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:
		September 30,				December 31,
		2013				2012
		Carrying		Fair		Carrying		Fair
	(In thousands)	Amount		Value		Amount		Value
	Cash, restricted cash and short-term investments (Level 1)	$	111,460	$	111,460	$	34,079	$	34,079
	Long-term debt (Level 1)	650,000		651,550		523,933		572,625
	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, 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.

Segment_Information

Segment Information	9 Months Ended
	Sep. 30, 2013
Segment Reporting [Abstract]	'
Segment Information	'
	Segment Information
	The table below presents information about our reportable segments:
		Three Months Ended September 30,						Nine Months Ended September 30,
	(In thousands)	2013			2012			2013			2012
	Segment net sales:
	Consumer Products	$	292,935		$	292,959		$	867,545		$	853,911
	Pulp and Paperboard1	194,910			187,274			552,126			557,692
	Total segment net sales	$	487,845		$	480,233		$	1,419,671		$	1,411,603
	Operating income:
	Consumer Products	$	13,445		$	18,453		$	38,384		$	70,420
	Pulp and Paperboard1	16,289			34,449			58,614			78,108
		29,734			52,902			96,998			148,528
	Corporate	(10,892		)	(13,140		)	(35,959		)	(38,621		)
	Income from operations	$	18,842		$	39,762		$	61,039		$	109,907
	Depreciation and amortization:
	Consumer Products	$	16,002		$	13,275		$	49,124		$	39,692
	Pulp and Paperboard	5,758			5,525			17,195			17,547
	Corporate	420			399			1,265			1,238
	Total depreciation and amortization	$	22,180		$	19,199		$	67,584		$	58,477
	1	Results for Pulp and Paperboard for the nine months ended September 30, 2012 include income and expenses associated with the November 2011 sale of the Lewiston, Idaho sawmill, the effects of which were immaterial in the aggregate.

Supplemental_Guarantor_Financi

Supplemental Guarantor Financial Information	9 Months Ended
	Sep. 30, 2013
Condensed Financial Information of Parent Company Only Disclosure [Abstract]	'
Supplemental Guarantor Financial Information	'
	Supplemental Guarantor Financial Information
	All of our directly and indirectly owned, domestic subsidiaries guarantee the 2013 Notes and the 2010 Notes on a joint and several basis. As of September 30, 2013, the 2013 Notes and 2010 Notes were not guaranteed by Interlake Acquisition Corporation Limited, a foreign subsidiary. There are no significant restrictions on the ability of the guarantor subsidiaries to make distributions to Clearwater Paper, the issuer of the 2013 Notes and 2010 Notes. The following tables present the results of operations, financial position and cash flows of Clearwater Paper and its subsidiaries, the guarantor and non-guarantor entities, 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 (Loss)
	Three Months Ended September 30, 2013
					Guarantor			Non-Guarantor
	(In thousands)	Issuer			Subsidiaries			Subsidiary			Eliminations			Total
	Net sales	$	356,549		$	128,115		$	8,176		$	(4,995	)	$	487,845
	Cost and expenses:
	Cost of sales	(314,509		)	(123,418		)	(8,305		)	4,995			(441,237		)
	Selling, general and administrative expenses	(24,983		)	(2,468		)	(315		)	—			(27,766		)
	Total operating costs and expenses	(339,492		)	(125,886		)	(8,620		)	4,995			(469,003		)
	Income (loss) from operations	17,057			2,229			(444		)	—			18,842
	Interest expense, net	(10,708		)	—			—			—			(10,708		)
	Earnings (loss) before income taxes	6,349			2,229			(444		)	—			8,134
	Income tax benefit (provision)	5,233			(2,513		)	109			2,354			5,183
	Equity in loss of subsidiary	(619		)	(335		)	—			954			—
	Net earnings (loss)	$	10,963		$	(619	)	$	(335	)	$	3,308		$	13,317
	Other comprehensive income, net of tax	2,277			—			—			—			2,277
	Comprehensive income (loss)	$	13,240		$	(619	)	$	(335	)	$	3,308		$	15,594
	Clearwater Paper Corporation
	Consolidating Statement of Operations and Comprehensive Income (Loss)
	Nine Months Ended September 30, 2013
					Guarantor			Non-Guarantor
	(In thousands)	Issuer			Subsidiaries			Subsidiaries			Eliminations			Total
	Net sales	$	1,048,872		$	363,467		$	22,317		$	(14,985	)	$	1,419,671
	Cost and expenses:
	Cost of sales	(912,449		)	(351,493		)	(21,010		)	14,985			(1,269,967		)
	Selling, general and administrative expenses	(70,102		)	(17,092		)	(1,471		)	—			(88,665		)
	Total operating costs and expenses	(982,551		)	(368,585		)	(22,481		)	14,985			(1,358,632		)
	Income (loss) from operations	66,321			(5,118		)	(164		)	—			61,039
	Interest expense, net	(32,784		)	—			—			—			(32,784		)
	Debt retirement costs	(17,058		)	—			—			—			(17,058		)
	Earnings (loss) before income taxes	16,479			(5,118		)	(164		)	—			11,197
	Income tax benefit (provision)	10,388			(3,821		)	75			6,254			12,896
	Equity in loss of subsidiary	(9,028		)	(89		)	—			9,117			—
	Net earnings (loss)	$	17,839		$	(9,028	)	$	(89	)	$	15,371		$	24,093
	Other comprehensive income, net of tax	7,189			—			—			—			7,189
	Comprehensive income (loss)	$	25,028		$	(9,028	)	$	(89	)	$	15,371		$	31,282
	Clearwater Paper Corporation
	Consolidating Statement of Operations and Comprehensive Income (Loss)
	Three Months Ended September 30, 2012
					Guarantor			Non-Guarantor
	(In thousands)	Issuer			Subsidiaries			Subsidiary			Eliminations			Total
	Net sales	$	350,988		$	127,742		$	6,500		$	(4,997	)	$	480,233
	Cost and expenses:
	Cost of sales	(288,150		)	(120,908		)	(5,761		)	4,997			(409,822		)
	Selling, general and administrative expenses	(24,592		)	(5,567		)	(490		)	—			(30,649		)
	Total operating costs and expenses	(312,742		)	(126,475		)	(6,251		)	4,997			(440,471		)
	Income from operations	38,246			1,267			249			—			39,762
	Interest expense, net	(7,900		)	—			—			—			(7,900		)
	Earnings before income taxes	30,346			1,267			249			—			31,862
	Income tax (provision) benefit	(20,364		)	3,123			334			4,109			(12,798		)
	Equity in income of subsidiary	4,973			583			—			(5,556		)	—
	Net earnings	$	14,955		$	4,973		$	583		$	(1,447	)	$	19,064
	Other comprehensive income, net of tax	1,521			—			—			—			1,521
	Comprehensive income	$	16,476		$	4,973		$	583		$	(1,447	)	$	20,585
	Clearwater Paper Corporation
	Consolidating Statement of Operations and Comprehensive Income (Loss)
	Nine Months Ended September 30, 2012
					Guarantor			Non-Guarantor
	(In thousands)	Issuer			Subsidiaries			Subsidiaries			Eliminations			Total
	Net sales	$	1,035,433		$	371,351		$	19,804		$	(14,985	)	$	1,411,603
Cost and expenses:
Cost of sales	(865,092		)	(343,637		)	(17,700		)	14,985			(1,211,444		)
Selling, general and administrative expenses	(72,081		)	(16,700		)	(1,471		)	—			(90,252		)
Total operating costs and expenses	(937,173		)	(360,337		)	(19,171		)	14,985			(1,301,696		)
Income from operations	98,260			11,014			633			—			109,907
Interest expense, net	(26,775		)	—			—			—			(26,775		)
Earnings before income taxes	71,485			11,014			633			—			83,132
Income tax provision	(37,002		)	(1,999		)	(68		)	216			(38,853		)
Equity in income of subsidiary	9,580			565			—			(10,145		)	—
Net earnings	$	44,063		$	9,580		$	565		$	(9,929	)	$	44,279
Other comprehensive income, net of tax	4,563			—			—			—			4,563
Comprehensive income	$	48,626		$	9,580		$	565		$	(9,929	)	$	48,842
Clearwater Paper Corporation
Consolidating Balance Sheet
At September 30, 2013
(In thousands)	Issuer			Guarantor			Non-Guarantor			Eliminations			Total
				Subsidiaries			Subsidiary
ASSETS
Current assets:
Cash	$	19,400		$	1		$	1,528		$	—		$	20,929
Restricted cash	1,500			—			—			—			1,500
Short-term investments	89,000			—			—			—			89,000
Receivables, net	121,636			45,546			3,365			(2,028		)	168,519
Taxes receivable	9,069			(9,037		)	83			8,265			8,380
Inventories	190,760			58,469			4,211			—			253,440
Deferred tax assets	22,453			7,980			—			(2,077		)	28,356
Prepaid expenses	7,382			685			143			—			8,210
Total current assets	461,200			103,644			9,330			4,160			578,334
Property, plant and equipment, net	620,802			235,039			16,921			—			872,762
Goodwill	229,533			—			—			—			229,533
Intangible assets, net	—			41,254			1,213			—			42,467
Intercompany receivable (payable)	54,106			(36,816		)	(11,035		)	(6,255		)	—
Investment in subsidiary	251,199			10,141			—			(261,340		)	—
Other assets, net	9,367			888			—			—			10,255
TOTAL ASSETS	$	1,626,207		$	354,150		$	16,429		$	(263,435	)	$	1,733,351
LIABILITIES AND STOCKHOLDERS’
EQUITY
Current liabilities:
Accounts payable and accrued	$	164,144		$	38,183		$	3,782		$	(2,028	)	$	204,081
liabilities
Current liability for pensions and	9,137			—			—			—			9,137
other postretirement employee
benefits
Total current liabilities	173,281			38,183			3,782			(2,028		)	213,218
Long-term debt	650,000			—			—			—			650,000
Liability for pensions and other	187,410			—			—			—			187,410
postretirement employee benefits
Other long-term obligations	50,787			234			—			—			51,021
Accrued taxes	66,059			1,790			315			—			68,164
Deferred tax liabilities	1,385			62,744			2,191			(67		)	66,253
Accumulated other comprehensive loss,	(108,504		)	—			—			—			(108,504		)
net of tax
Stockholders’ equity excluding	605,789			251,199			10,141			(261,340		)	605,789
accumulated other comprehensive loss
TOTAL LIABILITIES AND	$	1,626,207		$	354,150		$	16,429		$	(263,435	)	$	1,733,351
STOCKHOLDERS’ EQUITY
Clearwater Paper Corporation
Consolidating Balance Sheet
At December 31, 2012
(In thousands)	Issuer			Guarantor			Non-Guarantor			Eliminations			Total
				Subsidiaries			Subsidiary
ASSETS
Current assets:
Cash	$	11,105		$	5		$	1,469		$	—		$	12,579
Short-term investments	20,000			—			—			—			20,000
Receivables, net	109,129			41,431			5,612			(2,029		)	154,143
Taxes receivable	20,712			116			—			—			20,828
Inventories	163,422			63,476			4,568			—			231,466
Deferred tax assets	11,750			4,595			—			791			17,136
Prepaid expenses	11,441			708			165			—			12,314
Total current assets	347,559			110,331			11,814			(1,238		)	468,466
Property, plant and equipment, net	618,076			242,818			16,483			—			877,377
Goodwill	229,533			—			—			—			229,533
Intangible assets, net	—			46,379			1,374			—			47,753
Intercompany receivable (payable)	68,951			(56,153		)	(12,007		)	(791		)	—
Investment in subsidiary	249,010			10,055			—			(259,065		)	—
Other assets, net	9,948			379			—			—			10,327
TOTAL ASSETS	$	1,523,077		$	353,809		$	17,664		$	(261,094	)	$	1,633,456
LIABILITIES AND STOCKHOLDERS’
EQUITY
Current liabilities:
Accounts payable and accrued	$	132,360		$	30,630		$	4,635		$	(2,029	)	$	165,596
liabilities
Current liability for pensions and	9,137			—			—			—			9,137
other postretirement employee
benefits
Total current liabilities	141,497			30,630			4,635			(2,029		)	174,733
Long-term debt	523,933			—			—			—			523,933
Liability for pensions and other	204,163			—			—			—			204,163
postretirement employee benefits
Other long-term obligations	49,102			1,808			—			—			50,910
Accrued taxes	76,617			1,771			311			—			78,699
Deferred tax liabilities (assets)	(13,129		)	70,590			2,663			—			60,124
Accumulated other comprehensive loss,	(115,693		)	—			—			—			(115,693		)
net of tax
Stockholders’ equity excluding	656,587			249,010			10,055			(259,065		)	656,587
accumulated other comprehensive loss
TOTAL LIABILITIES AND	$	1,523,077		$	353,809		$	17,664		$	(261,094	)	$	1,633,456
STOCKHOLDERS’ EQUITY
Clearwater Paper Corporation
Consolidating Statement of Cash Flows
Nine Months Ended September 30, 2013
(In thousands)	Issuer			Guarantor			Non-Guarantor			Eliminations			Total
				Subsidiaries			Subsidiary
CASH FLOWS FROM OPERATING
ACTIVITIES
Net earnings (loss)	$	17,839		$	(9,028	)	$	(89	)	$	15,371		$	24,093
Adjustments to reconcile net earnings (loss) to
net cash provided by operating activities:
Depreciation and amortization	40,337			25,590			1,657			—			67,584
Deferred tax benefit	(776		)	(11,231		)	(472		)	2,801			(9,678		)
Equity-based compensation expense	7,758			—			—			—			7,758
Employee benefit plans	7,801			—			—			—			7,801
Deferred issuance costs and discounts on	4,490			—			—			—			4,490
long-term debt
Disposal of plant and equipment, net	—			34			1			—			35
Changes in working capital, net	(7,488		)	5,748			1,787			—			47
Changes in taxes receivable, net	11,643			9,153			(83		)	(8,265		)	12,448
Changes in non-current accrued taxes, net	(10,558		)	19			4			—			(10,535		)
Funding of qualified pension plans	(12,611		)	—			—			—			(12,611		)
Other, net	209			(101		)	—			—			108
Net cash provided by operating activities	58,644			20,184			2,805			9,907			91,540
CASH FLOWS FROM INVESTING
ACTIVITIES
Changes in short-term investments, net	(69,000		)	—			—			—			(69,000		)
Additions to plant and equipment	(40,598		)	(11,854		)	(1,948		)	—			(54,400		)
Net cash used for investing activities	(109,598		)	(11,854		)	(1,948		)	—			(123,400		)
CASH FLOWS FROM FINANCING
ACTIVITIES
Proceeds from long-term debt	275,000			—			—			—			275,000
Repayment of long-term debt	(150,000		)	—			—			—			(150,000		)
Purchase of treasury stock	(75,783		)	—			—			—			(75,783		)
Investment (to) from parent	19,039			(8,334		)	(798		)	(9,907		)	—
Payment of long-term debt issuance costs	(4,834		)	—			—			—			(4,834		)
Payment of tax withholdings on equity-	(4,173		)	—			—			—			(4,173		)
based payment arrangements
Net cash provided by (used for) financing	59,249			(8,334		)	(798		)	(9,907		)	40,210
activities
Increase (decrease) in cash	8,295			(4		)	59			—			8,350
Cash at beginning of period	11,105			5			1,469			—			12,579
Cash at end of period	$	19,400		$	1		$	1,528		$	—		$	20,929
Clearwater Paper Corporation
Consolidating Statement of Cash Flows
Nine Months Ended September 30, 2012
(In thousands)	Issuer			Guarantor Subsidiaries			Non-Guarantor			Eliminations			Total
							Subsidiary
CASH FLOWS FROM OPERATING
ACTIVITIES
Net earnings	$	44,063		$	9,580		$	565		$	(9,929	)	$	44,279
Adjustments to reconcile net earnings to net
cash provided by operating activities:
Depreciation and amortization	35,244			21,654			1,579			—			58,477
Deferred tax (benefit) provision	(6,040		)	(3,913		)	248			22,962			13,257
Equity-based compensation expense	7,681			—			—			—			7,681
Employee benefit plans	6,697			—			—			—			6,697
Deferred issuance costs and discounts on	1,508			—			—			—			1,508
long-term debt
Disposal of plant and equipment, net	487			1,014			—			—			1,501
Changes in working capital, net	16,641			35,456			(663		)	—			51,434
Changes in taxes receivable, net	(3,121		)	1,701			(65		)	(433		)	(1,918		)
Excess tax benefit from equity-based	(9,193		)	—			—			—			(9,193		)
payment arrangements
Changes in non-current accrued taxes, net	4,631			59			(529		)	—			4,161
Funding of qualified pension plans	(17,625		)	—			—			—			(17,625		)
Other, net	531			(207		)	—			—			324
Net cash provided by operating activities	81,504			65,344			1,135			12,600			160,583
CASH FLOWS FROM INVESTING
ACTIVITIES
Changes in short-term investments, net	18,001			—			—			—			18,001
Additions to plant and equipment	(146,256		)	(8,721		)	(388		)	—			(155,365		)
Proceeds from sale of assets	—			1,035			—			—			1,035
Net cash used for investing activities	(128,255		)	(7,686		)	(388		)	—			(136,329		)
CASH FLOWS FROM FINANCING
ACTIVITIES
Purchase of treasury stock	(9,355		)	—			—			—			(9,355		)
Payments for long-term debt issuance costs	(2		)	—			—			—			(2		)
Investment from (to) parent	70,454			(53,194		)	(4,660		)	(12,600		)	—
Payment of tax withholdings on equity-	(12,965		)	—			—			—			(12,965		)
based payment arrangements
Excess tax benefit from equity-based	9,193			—			—			—			9,193
payment arrangements
Net cash provided by (used for) financing	57,325			(53,194		)	(4,660		)	(12,600		)	(13,129		)
activities
Increase (decrease) in cash	10,574			4,464			(3,913		)	—			11,125
Cash at beginning of period	2,146			901			5,392			—			8,439
Cash at end of period	12,720			5,365			1,479			—			19,564

Nature_of_Operations_and_Basis1

Nature of Operations and Basis of Presentation (Policies)	9 Months Ended
	Sep. 30, 2013
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 requiring 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, 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	'
	SHORT-TERM INVESTMENTS AND RESTRICTED CASH
	Our short-term investments are invested primarily in demand deposits, which have very short maturity periods, and therefore earn an interest rate commensurate with low-risk instruments. We do not attempt to hedge our exposure to interest rate risk for our short-term investments. Our restricted cash in which the underlying instrument has a term of greater than twelve months from the balance sheet date is classified as non-current and is included in “Other assets, net” on our Consolidated Balance Sheet. As of September 30, 2013, substantially all restricted cash balances were classified as current and included in "Restricted cash" on our Consolidated Balance Sheet, compared to approximately $1.5 million of restricted cash classified as non-current and included in "Other assets, net" as of December 31, 2012.
TRADE ACCOUNTS RECEIVABLE	'
	TRADE ACCOUNTS RECEIVABLE
	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 September 30, 2013 and December 31, 2012, we had allowances for doubtful accounts of $1.7 million and $1.6 million, respectively.
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 $1,461.6 million and $1,401.4 million at September 30, 2013 and December 31, 2012, respectively.
	We did not capitalize interest for the three months and nine months ended September 30, 2013. For the three months and nine months ended September 30, 2012, we capitalized $4.1 million and $9.0 million, respectively, of interest expense associated with our through-air-dried, or TAD, tissue expansion project, which includes the construction of our new tissue manufacturing and converting facilities in Shelby, North Carolina, and upgrades to our tissue manufacturing facility in Las Vegas, Nevada.
STOCKHOLDERS' EQUITY	'
	STOCKHOLDERS’ EQUITY
	On January 17, 2013, we announced that our Board of Directors had approved a new stock repurchase program authorizing the repurchase of up to $100.0 million of our common stock. The repurchases were authorized to be carried out by the utilization of a number of different methods, including but not limited to, open market purchases, accelerated buybacks and negotiated block purchases, and were completed in 2013.
	On March 1, 2013, we entered into an accelerated stock buyback, or ASB, agreement with a major financial institution to repurchase an aggregate of $50.0 million of our outstanding common stock. The total aggregate number of shares repurchased pursuant to this agreement was determined by reference to our average stock prices, less a fixed discount, over the term of the agreement. During the first quarter of 2013, we received 826,617 shares of common stock, which was 80% of the total shares expected to be repurchased under the ASB agreement, and represented a total of approximately $40.8 million of the $50.0 million paid to the financial institution. During the third quarter of 2013, the ASB agreement was completed and we received an additional 212,896 shares of our outstanding common stock, which represented the remaining proceeds paid to the financial institution. In total, 1,039,513 shares of our outstanding common stock were delivered under the ASB agreement at an average repurchase price of $48.10 per share.
	We have also repurchased 535,897 shares of our outstanding common stock on the open market as of September 30, 2013, of which 327,315 shares were repurchased during the third quarter at an average price of $48.27 per share. As of September 30, 2013, $24.2 million of the authorized repurchase program remained. In October 2013, we repurchased an additional 494,760 shares of our outstanding common stock on the open market at an average price of $48.95 per share, which completed the remaining balance of our authorized stock repurchase program. We account for share repurchases under the program as treasury stock and record the amounts paid to repurchase shares at cost as a component of stockholders' equity. We have not retired any treasury shares and may choose to reissue shares held in treasury stock in a future period.
DERIVATIVES	'
	DERIVATIVES
	We had no activity during the three months and nine months ended September 30, 2013 and 2012 that required hedge or derivative accounting treatment. To help mitigate our exposure to market risk for changes in utility commodity pricing, from time to time we have used firm price contracts to supply a portion of the natural gas requirements for our manufacturing facilities. As of September 30, 2013, these contracts covered approximately 33% of our expected average monthly natural gas requirements for the remainder of 2013, plus lesser amounts for 2014. 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)	9 Months Ended
	Sep. 30, 2013
Inventory Disclosure [Abstract]	'
Inventories	'
	Inventories at the balance sheet dates consist of:
	(In thousands)	September 30,		December 31,
		2013		2012
	Pulp, paperboard and tissue products	$	167,154	$	147,627
	Materials and supplies	68,769		67,889
	Logs, pulpwood, chips and sawdust	17,517		15,950
		$	253,440	$	231,466

Intangible_Assets_Tables

Intangible Assets (Tables)	9 Months Ended
	Sep. 30, 2013
Finite-Lived Intangible Assets, Net [Abstract]	'
Intangible Assets	'
	Intangible assets at the balance sheet dates are comprised of the following:
		September 30, 2013
	(Dollars in thousands, lives in years)	Useful	Historical		Accumulated			Net
		Life	Cost		Amortization			Balance
	Customer relationships	9	$	53,957	$	(15,734	)	$	38,223
	Trade names and trademarks	10	5,300		(1,457		)	3,843
	Non-compete agreements	2.5 - 5.0	1,674		(1,273		)	401
			$	60,931	$	(18,464	)	$	42,467
		December 31, 2012
	(Dollars in thousands, lives in years)	Useful	Historical		Accumulated			Net
		Life	Cost		Amortization			Balance
	Customer relationships	9	$	53,957	$	(11,237	)	$	42,720
	Trade names and trademarks	10	5,300		(1,060		)	4,240
	Non-compete agreements	2.5 - 5.0	1,674		(881		)	793
			$	60,931	$	(13,178	)	$	47,753

Taxes_Taxes_Tables

Taxes Taxes (Tables)	9 Months Ended
	Sep. 30, 2013
Income Tax Disclosure [Abstract]	'
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]	'
	For the three and nine months ended September 30, 2013 and 2012, the effective tax rates attributable to continuing operations were as follows:
		Three Months Ended September 30,				Nine Months Ended September 30,
		2013		2012		2013		2012
	Statutory federal income tax rate	35	%	35	%	35	%	35	%
	State taxes, net of credits	1.5		3.6		1.5		3.6
	Change in valuation allowances	3.5		—		3.5		—
	Federal manufacturing deduction	—		(3.0	)	—		(3.0	)
	Settlement of uncertain tax positions	(57.3	)	—		(41.6	)	—
	Interest accrued on uncertain tax positions	8.4		1.2		13.9		1.7
	Cellulosic Biofuel Producer Credit conversion	0.2		—		(36.8	)	3.7
	Additional Cellulosic Biofuel Producer Credits	(43.0	)	3.2		(81.5	)	4.1
	State rate adjustment	(10.5	)	—		(8.1	)	—
	Return to provision adjustments	(0.5	)	0.5		(3.9	)	1.7
	Other	(1.0	)	(0.3	)	2.8		(0.1	)
	Effective tax rate	(63.7	)%	40.2	%	(115.2	)%	46.7	%

Accounts_Payable_and_Accrued_L1

Accounts Payable and Accrued Liabilities (Tables)	9 Months Ended
	Sep. 30, 2013
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)	September 30, 2013		December 31, 2012
	Trade accounts payable	$	111,898	$	75,949
	Accrued wages, salaries and employee benefits	39,184		42,491
	Accrued interest	13,250		5,242
	Accrued taxes other than income taxes payable	9,307		6,993
	Accrued utilities	6,839		8,205
	Accrued discounts and allowances	6,838		4,785
	Accrued transportation	3,011		4,417
	Other	13,754		17,514
		$	204,081	$	165,596

Other_LongTerm_Obligations_Tab

Other Long-Term Obligations (Tables)	9 Months Ended
	Sep. 30, 2013
Other Liabilities, Noncurrent [Abstract]	'
Other Long-Term Obligations	'
	Other long-term obligations at the balance sheet dates consist of:
	(In thousands)	September 30, 2013		December 31, 2012
	Long-term lease obligations, net of current portion	$	24,959	$	25,240
	Director and other deferred compensation	12,731		9,939
	Deferred proceeds	10,712		11,668
	Other	2,619		4,063
		$	51,021	$	50,910

Reclassification_out_of_Accumu1

Reclassification out of Accumulated Other Comprehensive Income (Tables)	9 Months Ended
	Sep. 30, 2013
Equity [Abstract]	'
Reclassification out of Accumulated Other Comprehensive Income [Table Text Block]	'
	Accumulated other comprehensive loss, net of tax, at the balance sheet dates is comprised of the following:
	(In thousands)	Foreign Currency Translation Adjustments1			Pension and Other Post Retirement Employee Benefit Plans Adjustments			Total
	Balance at December 31, 2012	$	(874	)	$	(114,819	)	$	(115,693	)
	Other comprehensive income, net of tax2	—			7,189			7,189
	Balance at September 30, 2013	$	(874	)	$	(107,630	)	$	(108,504	)
	1	This balance consists of unrealized foreign currency translation adjustments related to the operations of our Canadian subsidiary before its functional currency was changed from Canadian dollars to U.S. dollars in 2012.
	2	Net periodic costs associated with our pension and other postretirement employee benefit, or OPEB, plans included in other comprehensive income and reclassified from accumulated other comprehensive loss includes $11.1 million of actuarial loss amortization, $0.8 million of curtailments, $0.1 million of deferred tax amortization related to actuarial gains and $0.1 million related to prior service credit, net of tax of $4.6 million. These accumulated other comprehensive loss components, with the exception of the deferred tax amortization related to actuarial gains, 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_Postretireme1

Pension and Other Postretirement Employee Benefit Plans (Tables)	9 Months Ended
	Sep. 30, 2013
Compensation and Retirement Disclosure [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 September 30,
	(In thousands)	2013			2012			2013			2012
		Pension Benefit Plans						Other Postretirement
								Employee  Benefit Plans
	Service cost	$	435		$	622		$	138		$	173
	Interest cost	3,343			3,673			1,182			1,454
	Expected return on plan assets	(4,588		)	(4,921		)	—			—
	Amortization of prior service cost (credit)	83			158			(125		)	(670		)
	Amortization of actuarial loss	3,711			3,021			—			—
	Net periodic cost	$	2,984		$	2,553		$	1,195		$	957
		Nine Months Ended September 30,
	(In thousands)	2013			2012			2013			2012
		Pension Benefit Plans						Other Postretirement
								Employee  Benefit Plans
	Service cost	$	1,304		$	1,864		$	414		$	520
	Interest cost	10,031			11,020			3,547			4,361
	Expected return on plan assets	(13,764		)	(14,764		)	—			—
	Amortization of prior service cost (credit)	252			475			(376		)	(2,010		)
	Amortization of actuarial loss	11,130			9,064			—			—
	Curtailments	769			—			—			—
	Net periodic cost	$	9,722		$	7,659		$	3,585		$	2,871

Earnings_per_Common_Share_Tabl

Earnings per Common Share (Tables)	9 Months Ended
	Sep. 30, 2013
Earnings Per Share [Abstract]	'
Reconciliation of Number of Common Shares Used in Calculating Basic and Diluted Net Earnings per Share	'
		Three Months Ended September 30,				Nine Months Ended September 30,
		2013		2012		2013		2012
	Basic average common shares outstanding1	22,026,879		23,360,967		22,388,930		23,337,323
	Incremental shares due to:
	Restricted stock units	69,902		51,230		61,956		43,580
	Performance shares	131,092		287,491		114,369		264,021
	Diluted average common shares outstanding	22,227,873		23,699,688		22,565,255		23,644,924
	Basic net earnings per common share	$	0.6	$	0.82	$	1.08	$	1.9
	Diluted net earnings per common share	0.6		0.8		1.07		1.87
	Anti-dilutive shares excluded from calculation	1,434		29,382		106,265		132,273
	1	Basic average common shares outstanding include restricted stock awards that are fully vested, but are deferred for future issuance.

EquityBased_Compensation_Table

Equity-Based Compensation (Tables)	9 Months Ended
	Sep. 30, 2013
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 September 30,					Nine Months Ended September 30,
	(In thousands)	2013			2012		2013		2012
	Restricted stock units	$	462		$	297	$	1,326	$	693
	Performance shares	1,354			1,953		3,741		5,284
	Total employee equity-based compensation	$	1,816		$	2,250	$	5,067	$	5,977
Summary of Number of Share-Based Awards Granted	'
	The following table summarizes the number of share-based awards granted under our 2008 Stock Incentive Plan during the nine months ended September 30, 2013 and the grant-date fair value of the awards:
		Nine Months Ended
		30-Sep-13
		Number of		Average Fair Value of
		Awards		Award Per Share
	Restricted stock units	72,702		$	43.44
	Performance shares	124,513		63.46

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2013
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:
		September 30,				December 31,
		2013				2012
		Carrying		Fair		Carrying		Fair
	(In thousands)	Amount		Value		Amount		Value
	Cash, restricted cash and short-term investments (Level 1)	$	111,460	$	111,460	$	34,079	$	34,079
	Long-term debt (Level 1)	650,000		651,550		523,933		572,625

Segment_Information_Tables

Segment Information (Tables)	9 Months Ended
	Sep. 30, 2013
Segment Reporting [Abstract]	'
Reportable Segments Information	'
	The table below presents information about our reportable segments:
		Three Months Ended September 30,						Nine Months Ended September 30,
	(In thousands)	2013			2012			2013			2012
	Segment net sales:
	Consumer Products	$	292,935		$	292,959		$	867,545		$	853,911
	Pulp and Paperboard1	194,910			187,274			552,126			557,692
	Total segment net sales	$	487,845		$	480,233		$	1,419,671		$	1,411,603
	Operating income:
	Consumer Products	$	13,445		$	18,453		$	38,384		$	70,420
	Pulp and Paperboard1	16,289			34,449			58,614			78,108
		29,734			52,902			96,998			148,528
	Corporate	(10,892		)	(13,140		)	(35,959		)	(38,621		)
	Income from operations	$	18,842		$	39,762		$	61,039		$	109,907
	Depreciation and amortization:
	Consumer Products	$	16,002		$	13,275		$	49,124		$	39,692
	Pulp and Paperboard	5,758			5,525			17,195			17,547
	Corporate	420			399			1,265			1,238
	Total depreciation and amortization	$	22,180		$	19,199		$	67,584		$	58,477
	1	Results for Pulp and Paperboard for the nine months ended September 30, 2012 include income and expenses associated with the November 2011 sale of the Lewiston, Idaho sawmill, the effects of which were immaterial in the aggregate.

Supplemental_Guarantor_Financi1

Supplemental Guarantor Financial Information (Tables)	9 Months Ended
	Sep. 30, 2013
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 (Loss)
	Three Months Ended September 30, 2013
					Guarantor			Non-Guarantor
	(In thousands)	Issuer			Subsidiaries			Subsidiary			Eliminations			Total
	Net sales	$	356,549		$	128,115		$	8,176		$	(4,995	)	$	487,845
	Cost and expenses:
	Cost of sales	(314,509		)	(123,418		)	(8,305		)	4,995			(441,237		)
	Selling, general and administrative expenses	(24,983		)	(2,468		)	(315		)	—			(27,766		)
	Total operating costs and expenses	(339,492		)	(125,886		)	(8,620		)	4,995			(469,003		)
	Income (loss) from operations	17,057			2,229			(444		)	—			18,842
	Interest expense, net	(10,708		)	—			—			—			(10,708		)
	Earnings (loss) before income taxes	6,349			2,229			(444		)	—			8,134
	Income tax benefit (provision)	5,233			(2,513		)	109			2,354			5,183
	Equity in loss of subsidiary	(619		)	(335		)	—			954			—
	Net earnings (loss)	$	10,963		$	(619	)	$	(335	)	$	3,308		$	13,317
	Other comprehensive income, net of tax	2,277			—			—			—			2,277
	Comprehensive income (loss)	$	13,240		$	(619	)	$	(335	)	$	3,308		$	15,594
	Clearwater Paper Corporation
	Consolidating Statement of Operations and Comprehensive Income (Loss)
	Nine Months Ended September 30, 2013
					Guarantor			Non-Guarantor
	(In thousands)	Issuer			Subsidiaries			Subsidiaries			Eliminations			Total
	Net sales	$	1,048,872		$	363,467		$	22,317		$	(14,985	)	$	1,419,671
	Cost and expenses:
	Cost of sales	(912,449		)	(351,493		)	(21,010		)	14,985			(1,269,967		)
	Selling, general and administrative expenses	(70,102		)	(17,092		)	(1,471		)	—			(88,665		)
	Total operating costs and expenses	(982,551		)	(368,585		)	(22,481		)	14,985			(1,358,632		)
	Income (loss) from operations	66,321			(5,118		)	(164		)	—			61,039
	Interest expense, net	(32,784		)	—			—			—			(32,784		)
	Debt retirement costs	(17,058		)	—			—			—			(17,058		)
	Earnings (loss) before income taxes	16,479			(5,118		)	(164		)	—			11,197
	Income tax benefit (provision)	10,388			(3,821		)	75			6,254			12,896
	Equity in loss of subsidiary	(9,028		)	(89		)	—			9,117			—
	Net earnings (loss)	$	17,839		$	(9,028	)	$	(89	)	$	15,371		$	24,093
	Other comprehensive income, net of tax	7,189			—			—			—			7,189
	Comprehensive income (loss)	$	25,028		$	(9,028	)	$	(89	)	$	15,371		$	31,282
	Clearwater Paper Corporation
	Consolidating Statement of Operations and Comprehensive Income (Loss)
	Three Months Ended September 30, 2012
					Guarantor			Non-Guarantor
	(In thousands)	Issuer			Subsidiaries			Subsidiary			Eliminations			Total
	Net sales	$	350,988		$	127,742		$	6,500		$	(4,997	)	$	480,233
	Cost and expenses:
	Cost of sales	(288,150		)	(120,908		)	(5,761		)	4,997			(409,822		)
	Selling, general and administrative expenses	(24,592		)	(5,567		)	(490		)	—			(30,649		)
	Total operating costs and expenses	(312,742		)	(126,475		)	(6,251		)	4,997			(440,471		)
	Income from operations	38,246			1,267			249			—			39,762
	Interest expense, net	(7,900		)	—			—			—			(7,900		)
	Earnings before income taxes	30,346			1,267			249			—			31,862
	Income tax (provision) benefit	(20,364		)	3,123			334			4,109			(12,798		)
	Equity in income of subsidiary	4,973			583			—			(5,556		)	—
	Net earnings	$	14,955		$	4,973		$	583		$	(1,447	)	$	19,064
	Other comprehensive income, net of tax	1,521			—			—			—			1,521
	Comprehensive income	$	16,476		$	4,973		$	583		$	(1,447	)	$	20,585
	Clearwater Paper Corporation
	Consolidating Statement of Operations and Comprehensive Income (Loss)
	Nine Months Ended September 30, 2012
					Guarantor			Non-Guarantor
	(In thousands)	Issuer			Subsidiaries			Subsidiaries			Eliminations			Total
	Net sales	$	1,035,433		$	371,351		$	19,804		$	(14,985	)	$	1,411,603
	Cost and expenses:
Cost of sales	(865,092		)	(343,637		)	(17,700		)	14,985			(1,211,444		)
Selling, general and administrative expenses	(72,081		)	(16,700		)	(1,471		)	—			(90,252		)
Total operating costs and expenses	(937,173		)	(360,337		)	(19,171		)	14,985			(1,301,696		)
Income from operations	98,260			11,014			633			—			109,907
Interest expense, net	(26,775		)	—			—			—			(26,775		)
Earnings before income taxes	71,485			11,014			633			—			83,132
Income tax provision	(37,002		)	(1,999		)	(68		)	216			(38,853		)
Equity in income of subsidiary	9,580			565			—			(10,145		)	—
Net earnings	$	44,063		$	9,580		$	565		$	(9,929	)	$	44,279
Other comprehensive income, net of tax	4,563			—			—			—			4,563
Comprehensive income	$	48,626		$	9,580		$	565		$	(9,929	)	$	48,842
Clearw
Condensed Consolidating Balance Sheet	'
	Clearwater Paper Corporation
	Consolidating Balance Sheet
	At September 30, 2013
	(In thousands)	Issuer			Guarantor			Non-Guarantor			Eliminations			Total
					Subsidiaries			Subsidiary
	ASSETS
	Current assets:
	Cash	$	19,400		$	1		$	1,528		$	—		$	20,929
	Restricted cash	1,500			—			—			—			1,500
	Short-term investments	89,000			—			—			—			89,000
	Receivables, net	121,636			45,546			3,365			(2,028		)	168,519
	Taxes receivable	9,069			(9,037		)	83			8,265			8,380
	Inventories	190,760			58,469			4,211			—			253,440
	Deferred tax assets	22,453			7,980			—			(2,077		)	28,356
	Prepaid expenses	7,382			685			143			—			8,210
	Total current assets	461,200			103,644			9,330			4,160			578,334
	Property, plant and equipment, net	620,802			235,039			16,921			—			872,762
	Goodwill	229,533			—			—			—			229,533
	Intangible assets, net	—			41,254			1,213			—			42,467
	Intercompany receivable (payable)	54,106			(36,816		)	(11,035		)	(6,255		)	—
	Investment in subsidiary	251,199			10,141			—			(261,340		)	—
	Other assets, net	9,367			888			—			—			10,255
	TOTAL ASSETS	$	1,626,207		$	354,150		$	16,429		$	(263,435	)	$	1,733,351
	LIABILITIES AND STOCKHOLDERS’
	EQUITY
	Current liabilities:
	Accounts payable and accrued	$	164,144		$	38,183		$	3,782		$	(2,028	)	$	204,081
	liabilities
	Current liability for pensions and	9,137			—			—			—			9,137
	other postretirement employee
	benefits
	Total current liabilities	173,281			38,183			3,782			(2,028		)	213,218
	Long-term debt	650,000			—			—			—			650,000
	Liability for pensions and other	187,410			—			—			—			187,410
	postretirement employee benefits
	Other long-term obligations	50,787			234			—			—			51,021
	Accrued taxes	66,059			1,790			315			—			68,164
	Deferred tax liabilities	1,385			62,744			2,191			(67		)	66,253
	Accumulated other comprehensive loss,	(108,504		)	—			—			—			(108,504		)
	net of tax
	Stockholders’ equity excluding	605,789			251,199			10,141			(261,340		)	605,789
	accumulated other comprehensive loss
	TOTAL LIABILITIES AND	$	1,626,207		$	354,150		$	16,429		$	(263,435	)	$	1,733,351
	STOCKHOLDERS’ EQUITY
	Clearwater Paper Corporation
	Consolidating Balance Sheet
	At December 31, 2012
	(In thousands)	Issuer			Guarantor			Non-Guarantor			Eliminations			Total
					Subsidiaries			Subsidiary
	ASSETS
	Current assets:
	Cash	$	11,105		$	5		$	1,469		$	—		$	12,579
	Short-term investments	20,000			—			—			—			20,000
	Receivables, net	109,129			41,431			5,612			(2,029		)	154,143
	Taxes receivable	20,712			116			—			—			20,828
	Inventories	163,422			63,476			4,568			—			231,466
	Deferred tax assets	11,750			4,595			—			791			17,136
	Prepaid expenses	11,441			708			165			—			12,314
	Total current assets	347,559			110,331			11,814			(1,238		)	468,466
	Property, plant and equipment, net	618,076			242,818			16,483			—			877,377
	Goodwill	229,533			—			—			—			229,533
	Intangible assets, net	—			46,379			1,374			—			47,753
	Intercompany receivable (payable)	68,951			(56,153		)	(12,007		)	(791		)	—
Investment in subsidiary	249,010			10,055			—			(259,065		)	—
Other assets, net	9,948			379			—			—			10,327
TOTAL ASSETS	$	1,523,077		$	353,809		$	17,664		$	(261,094	)	$	1,633,456
LIABILITIES AND STOCKHOLDERS’
EQUITY
Current liabilities:
Accounts payable and accrued	$	132,360		$	30,630		$	4,635		$	(2,029	)	$	165,596
liabilities
Current liability for pensions and	9,137			—			—			—			9,137
other postretirement employee
benefits
Total current liabilities	141,497			30,630			4,635			(2,029		)	174,733
Long-term debt	523,933			—			—			—			523,933
Liability for pensions and other	204,163			—			—			—			204,163
postretirement employee benefits
Other long-term obligations	49,102			1,808			—			—			50,910
Accrued taxes	76,617			1,771			311			—			78,699
Deferred tax liabilities (assets)	(13,129		)	70,590			2,663			—			60,124
Accumulated other comprehensive loss,	(115,693		)	—			—			—			(115,693		)
net of tax
Stockholders’ equity excluding	656,587			249,010			10,055			(259,065		)	656,587
accumulated other comprehensive loss
TOTAL LIABILITIES AND	$	1,523,077		$	353,809		$	17,664		$	(261,094	)	$	1,633,456
STOCKHOLDERS’ EQUITY
Condensed Consolidating Statement of Cash Flows	'
	Clearwater Paper Corporation
	Consolidating Statement of Cash Flows
	Nine Months Ended September 30, 2013
	(In thousands)	Issuer			Guarantor			Non-Guarantor			Eliminations			Total
					Subsidiaries			Subsidiary
	CASH FLOWS FROM OPERATING
	ACTIVITIES
	Net earnings (loss)	$	17,839		$	(9,028	)	$	(89	)	$	15,371		$	24,093
	Adjustments to reconcile net earnings (loss) to
	net cash provided by operating activities:
	Depreciation and amortization	40,337			25,590			1,657			—			67,584
	Deferred tax benefit	(776		)	(11,231		)	(472		)	2,801			(9,678		)
	Equity-based compensation expense	7,758			—			—			—			7,758
	Employee benefit plans	7,801			—			—			—			7,801
	Deferred issuance costs and discounts on	4,490			—			—			—			4,490
	long-term debt
	Disposal of plant and equipment, net	—			34			1			—			35
	Changes in working capital, net	(7,488		)	5,748			1,787			—			47
	Changes in taxes receivable, net	11,643			9,153			(83		)	(8,265		)	12,448
	Changes in non-current accrued taxes, net	(10,558		)	19			4			—			(10,535		)
	Funding of qualified pension plans	(12,611		)	—			—			—			(12,611		)
	Other, net	209			(101		)	—			—			108
	Net cash provided by operating activities	58,644			20,184			2,805			9,907			91,540
	CASH FLOWS FROM INVESTING
	ACTIVITIES
	Changes in short-term investments, net	(69,000		)	—			—			—			(69,000		)
	Additions to plant and equipment	(40,598		)	(11,854		)	(1,948		)	—			(54,400		)
	Net cash used for investing activities	(109,598		)	(11,854		)	(1,948		)	—			(123,400		)
	CASH FLOWS FROM FINANCING
	ACTIVITIES
	Proceeds from long-term debt	275,000			—			—			—			275,000
	Repayment of long-term debt	(150,000		)	—			—			—			(150,000		)
	Purchase of treasury stock	(75,783		)	—			—			—			(75,783		)
	Investment (to) from parent	19,039			(8,334		)	(798		)	(9,907		)	—
	Payment of long-term debt issuance costs	(4,834		)	—			—			—			(4,834		)
	Payment of tax withholdings on equity-	(4,173		)	—			—			—			(4,173		)
	based payment arrangements
	Net cash provided by (used for) financing	59,249			(8,334		)	(798		)	(9,907		)	40,210
	activities
	Increase (decrease) in cash	8,295			(4		)	59			—			8,350
	Cash at beginning of period	11,105			5			1,469			—			12,579
	Cash at end of period	$	19,400		$	1		$	1,528		$	—		$	20,929
	Clearwater Paper Corporation
	Consolidating Statement of Cash Flows
	Nine Months Ended September 30, 2012
	(In thousands)	Issuer			Guarantor Subsidiaries			Non-Guarantor			Eliminations			Total
								Subsidiary
	CASH FLOWS FROM OPERATING
	ACTIVITIES
	Net earnings	$	44,063		$	9,580		$	565		$	(9,929	)	$	44,279
	Adjustments to reconcile net earnings to net
	cash provided by operating activities:
	Depreciation and amortization	35,244			21,654			1,579			—			58,477
	Deferred tax (benefit) provision	(6,040		)	(3,913		)	248			22,962			13,257
	Equity-based compensation expense	7,681			—			—			—			7,681
	Employee benefit plans	6,697			—			—			—			6,697
	Deferred issuance costs and discounts on	1,508			—			—			—			1,508
	long-term debt
	Disposal of plant and equipment, net	487			1,014			—			—			1,501
	Changes in working capital, net	16,641			35,456			(663		)	—			51,434
	Changes in taxes receivable, net	(3,121		)	1,701			(65		)	(433		)	(1,918		)
	Excess tax benefit from equity-based	(9,193		)	—			—			—			(9,193		)
	payment arrangements
Changes in non-current accrued taxes, net	4,631			59			(529		)	—			4,161
Funding of qualified pension plans	(17,625		)	—			—			—			(17,625		)
Other, net	531			(207		)	—			—			324
Net cash provided by operating activities	81,504			65,344			1,135			12,600			160,583
CASH FLOWS FROM INVESTING
ACTIVITIES
Changes in short-term investments, net	18,001			—			—			—			18,001
Additions to plant and equipment	(146,256		)	(8,721		)	(388		)	—			(155,365		)
Proceeds from sale of assets	—			1,035			—			—			1,035
Net cash used for investing activities	(128,255		)	(7,686		)	(388		)	—			(136,329		)
CASH FLOWS FROM FINANCING
ACTIVITIES
Purchase of treasury stock	(9,355		)	—			—			—			(9,355		)
Payments for long-term debt issuance costs	(2		)	—			—			—			(2		)
Investment from (to) parent	70,454			(53,194		)	(4,660		)	(12,600		)	—
Payment of tax withholdings on equity-	(12,965		)	—			—			—			(12,965		)
based payment arrangements
Excess tax benefit from equity-based	9,193			—			—			—			9,193
payment arrangements
Net cash provided by (used for) financing	57,325			(53,194		)	(4,660		)	(12,600		)	(13,129		)
activities
Increase (decrease) in cash	10,574			4,464			(3,913		)	—			11,125
Cash at beginning of period	2,146			901			5,392			—			8,439
Cash at end of period	12,720			5,365			1,479			—			19,564

Nature_of_Operations_and_Basis2

Nature of Operations and Basis of Presentation - Additional Information (Detail) (USD $)

3 Months Ended

9 Months Ended

0 Months Ended

6 Months Ended

3 Months Ended

9 Months Ended

1 Months Ended

In Millions, except Share data, unless otherwise specified

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Dec. 31, 2012

Jan. 21, 2013

Sep. 18, 2013

Mar. 02, 2013

Sep. 16, 2013

Sep. 30, 2013

Sep. 30, 2013

Dec. 31, 2012

Oct. 31, 2013

location

location

Common Stock [Member]

Common Stock [Member]

Common Stock [Member]

Common Stock [Member]

Common Stock [Member]

Common Stock [Member]

Other Assets [Member]

Subsequent Event [Member]

Accelerated Share Buyback Agreement [Member]

Accelerated Share Buyback Agreement [Member]

Accelerated Share Buyback Agreement [Member]

Open Market Share Repurchase [Member]

Open Market Share Repurchase [Member]

Common Stock [Member]

Open Market Share Repurchase [Member]

Nature of Operations

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of manufacturing locations

15

'

15

'

'

'

'

'

'

'

'

'

'

Other Nonrecurring Expense, Planned Permaent Facility Closure

$1.70

'

$2.90

'

'

'

'

'

'

'

'

'

'

Restricted Cash and Cash Equivalents, Noncurrent

'

'

'

'

'

'

'

'

'

'

'

1.5

'

Allowance for doubtful accounts

1.7

'

1.7

'

1.6

'

'

'

'

'

'

'

'

Accumulated depreciation

1,461.60

'

1,461.60

'

1,401.40

'

'

'

'

'

'

'

'

Interest expense, capitalized

'

4.1

'

9

'

'

'

'

'

'

'

'

'

Common stock authorized (in shares)

'

'

'

'

'

100

'

50

'

'

'

'

'

Stock Repurchase Program, Remaining Authorized Repurchase Percentage

'

'

'

'

'

'

'

80.00%

'

'

'

'

'

Number of shares repurchased (in shares)

'

'

'

'

'

'

212,896

826,617

1,039,513

327,315

535,897

'

494,760

Stock Repurchased During Period, Value

'

'

'

'

'

'

'

40.8

'

'

'

'

'

Treasury Stock Acquired, Average Cost Per Share

'

'

'

'

'

'

'

'

$48.10

$48.27

'

'

$48.95

Remaining authorized share amount

'

'

'

'

'

'

'

'

'

'

$24.20

'

'

Percentage Of Expected Natural Gas Requirement Covered Under Contract

33.00%

'

33.00%

'

'

'

'

'

'

'

'

'

'

Inventories_Detail

Inventories (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Inventory Disclosure [Abstract]	'	'
Pulp, paperboard and tissue products	$167,154	$147,627
Materials and supplies	68,769	67,889
Logs, pulpwood, chips and sawdust	17,517	15,950
Inventories	$253,440	$231,466

Intangible_Assets_Detail

Intangible Assets (Detail) (USD $)	9 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Finite-Lived Intangible Assets [Line Items]	'	'
Historical Cost	$60,931	$60,931
Accumulated Amortization	-18,464	-13,178
Net Balance	42,467	47,753
Customer relationships	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Useful Life	'9 years 0 months	'9 years 0 months
Historical Cost	53,957	53,957
Accumulated Amortization	-15,734	-11,237
Net Balance	38,223	42,720
Tradenames and trademarks	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Useful Life	'10 years 0 months	'10 years 0 months
Historical Cost	5,300	5,300
Accumulated Amortization	-1,457	-1,060
Net Balance	3,843	4,240
Non-compete agreements	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Historical Cost	1,674	1,674
Accumulated Amortization	-1,273	-881
Net Balance	$401	$793
Maximum [Member] | Non-compete agreements	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Useful Life	'5 years	'5 years
Minimum [Member] | Non-compete agreements	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Useful Life	'2 years 6 months	'2 years 6 months

Taxes_Additional_Information_D

Taxes - Additional Information (Detail)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Tax Credit Carryforward [Line Items]	'	'	'	'
Statutory federal income tax rate	35.00%	35.00%	35.00%	35.00%
State taxes, net of credits	1.50%	3.60%	1.50%	3.60%
Change in valuation allowances	3.50%	0.00%	3.50%	0.00%
Federal manufacturing deduction	0.00%	-3.00%	0.00%	-3.00%
Settlement of uncertain tax positions	-57.30%	0.00%	-41.60%	0.00%
Interest accrued on uncertain tax positions	8.40%	1.20%	13.90%	1.70%
State rate adjustment	-10.50%	0.00%	-8.10%	0.00%
Return to provision adjustments	-0.50%	0.50%	-3.90%	1.70%
Other	-1.00%	-0.30%	2.80%	-0.10%
Effective tax rate	-63.70%	40.20%	-115.20%	46.70%
Estimated Annual Effective Tax Rate	39.00%	35.00%	'	'
Conversion From AFMTC To CBPC	'	'	'	'
Tax Credit Carryforward [Line Items]	'	'	'	'
Effective Income Tax Rate Reconciliation, Tax Credit, Other, Percent	0.20%	0.00%	-36.80%	3.70%
Cellulosic Biofuel Producer Credit [Member]	'	'	'	'
Tax Credit Carryforward [Line Items]	'	'	'	'
Effective Income Tax Rate Reconciliation, Tax Credit, Other, Percent	-43.00%	3.20%	-81.50%	4.10%

Accounts_Payable_and_Accrued_L2

Accounts Payable and Accrued Liabilities (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Accounts Payable and Accrued Liabilities [Abstract]	'	'
Trade accounts payable	$111,898	$75,949
Accrued wages, salaries and employee benefits	39,184	42,491
Accrued interest	13,250	5,242
Accrued taxes other than income taxes payable	9,307	6,993
Accrued discounts and allowances	6,838	4,785
Accrued utilities	6,839	8,205
Accrued transportation	3,011	4,417
Other	13,754	17,514
Accounts payable and accrued liabilities	$204,081	$165,596

Debt_Additional_Information_De

Debt - Additional Information (Detail) (USD $)

3 Months Ended

9 Months Ended

0 Months Ended

2 Months Ended

0 Months Ended

12 Months Ended

12 Months Ended

0 Months Ended

1 Months Ended

0 Months Ended

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Dec. 31, 2012

Jan. 23, 2013

Feb. 22, 2013

Jan. 21, 2013

Feb. 01, 2012

Jan. 21, 2013

Jan. 21, 2013

Oct. 22, 2010

Oct. 22, 2010

Dec. 31, 2011

Oct. 22, 2010

Dec. 31, 2009

Jun. 30, 2009

Dec. 31, 2009

Jan. 23, 2013

Nov. 26, 2008

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes Prior to February First, 2016 [Member]

Senior Notes Before February First, 2018 [Member]

Senior Notes Due 2018

Senior Notes Due 2018

Senior Notes Due 2018

Senior Notes Due 2018

Senior Notes Due Twenty Sixteen [Member]

Senior Notes Due Twenty Sixteen [Member]

Senior Notes Due Twenty Sixteen [Member]

Senior Notes Due 2023

Revolving Credit Facility

Revolving Credit Facility

Revolving Credit Facility

Revolving Credit Facility

Revolving Credit Facility

Revolving Credit Facility

Revolving Credit Facility

Revolving Credit Facility

Revolving Credit Facility

Senior Notes Prior to November 1, 2013

Senior Notes Prior to November 1, 2013

Senior Notes Before November 1, 2014

Senior Notes Prior to June 15, 2013

Senior Notes Prior to February First, 2016 [Member]

Minimum [Member]

London Interbank Offered Rate (LIBOR) [Member]

London Interbank Offered Rate (LIBOR) [Member]

London Interbank Offered Rate (LIBOR) [Member]

Base Rate

Base Rate

Federal Fund Rate [Member]

Maximum [Member]

Maximum [Member]

Minimum [Member]

Maximum [Member]

Minimum [Member]

Maximum [Member]

Maximum [Member]

Debt Instrument [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt Instrument, Face Amount

'

'

'

'

'

'

'

$275,000,000

'

'

'

$375,000,000

'

'

'

'

$150,000,000

'

'

'

'

'

'

'

'

'

'

'

Debt instrument, maturity date

'

'

'

'

'

'

'

'

'

'

'

1-Nov-18

'

'

'

15-Jun-16

'

'

'

'

'

'

'

'

'

'

'

'

Debt instrument, interest rate

'

'

'

'

'

'

'

'

4.50%

'

'

7.13%

'

'

'

'

10.63%

'

'

'

'

'

'

'

'

'

'

'

Proceeds from Issuance of Long-term Debt

'

'

275,000,000

0

'

271,000,000

'

'

'

'

'

367,500,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed

'

'

'

'

'

'

'

'

'

'

'

'

'

35.00%

'

'

'

'

35.00%

'

'

'

'

'

'

'

'

'

Redemption Price

'

'

'

'

'

'

100.00%

'

'

104.50%

100.00%

'

107.13%

'

100.00%

'

'

100.00%

'

'

'

'

'

'

'

'

'

'

Gains (Losses) on Extinguishment of Debt

0

0

-17,058,000

0

'

'

12,600,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest Payable, Current

13,250,000

'

13,250,000

'

5,242,000

'

3,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt Instrument Principal Amount Redeemed

'

'

'

'

'

'

166,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt instrument, price

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

98.79%

'

'

'

'

'

'

'

'

'

'

'

Credit facility, maximum borrowing capacity

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

125,000,000

125,000,000

'

'

'

'

'

'

'

Earliest extended term of revolving loan

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

30-Sep-16

'

'

'

'

'

'

'

'

Amount available as percentage of eligible accounts receivable

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

85.00%

'

'

'

'

'

'

'

Amount available as percentage of eligible inventories

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

65.00%

'

'

'

'

'

'

'

Outstanding stand by letters of credit

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

6,600,000

'

'

'

'

'

'

'

Interest rate spread

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1.75%

1.75%

2.25%

1.25%

1.75%

0.50%

Credit facility available to draw

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$118,400,000

'

'

'

'

'

'

'

Percentage of availability triggers covenant requirement under credit facility

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

12.50%

'

'

'

'

'

'

'

Debt covenant, actual fixed charge ratio

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2.6

1

'

'

'

'

'

'

Other_LongTerm_Obligations_Det

Other Long-Term Obligations (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Other Liabilities, Noncurrent [Abstract]	'	'
Long-term lease obligations, net of current portion	$24,959	$25,240
Deferred proceeds	10,712	11,668
Deferred compensation	12,731	9,939
Other	2,619	4,063
Other long-term obligations	$51,021	$50,910

Reclassification_out_of_Accumu2

Reclassification out of Accumulated Other Comprehensive Income (Details) (USD $)	3 Months Ended			9 Months Ended
	Sep. 30, 2013		Sep. 30, 2012	Sep. 30, 2013		Sep. 30, 2012
Reclassification Out of Accumulated Other Comprehensive Income [Line Items]	'		'	'		'
Balance at December 31, 2012	'		'	($115,693,000)		'
Net current period other comprehensive income ending balance	2,277,000		1,521,000	7,189,000	[1]	4,563,000
Balance at March 31, 2013	-108,504,000		'	-108,504,000		'
Amortization of actuarial loss included in net periodic cost, before tax	'		'	11,100,000		'
Other Comprehensive Income (Loss), Finalization of Pension and Other Postretirement Benefit Plan Valuation, before Tax	'		'	800,000		'
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, Tax	'		'	100,000		'
Amortization of prior service credit included in net periodic cost, before tax	'		'	-100,000		'
Other comprehensive income (loss), tax	'		'	4,600,000		'
Foreign Currency Translation Adjustments	'		'	'		'
Reclassification Out of Accumulated Other Comprehensive Income [Line Items]	'		'	'		'
Balance at December 31, 2012	'		'	-874,000	[2]	'
Net current period other comprehensive income ending balance	'		'	0	[1],[2]	'
Balance at March 31, 2013	-874,000	[2]	'	-874,000	[2]	'
Defined Benefit Pension Plan Adjustments	'		'	'		'
Reclassification Out of Accumulated Other Comprehensive Income [Line Items]	'		'	'		'
Balance at December 31, 2012	'		'	-114,819,000		'
Net current period other comprehensive income ending balance	'		'	7,189,000	[1]	'
Balance at March 31, 2013	($107,630,000)		'	($107,630,000)		'
[1]	Net periodic costs associated with our pension and other postretirement employee benefit, or OPEB, plans included in other comprehensive income and reclassified from accumulated other comprehensive loss includes $11.1 million of actuarial loss amortization, $0.8 million of curtailments, $0.1 million of deferred tax amortization related to actuarial gains and $0.1 million related to prior service credit, net of tax of $4.6 million. These accumulated other comprehensive loss components, with the exception of the deferred tax amortization related to actuarial gains, are included in the computation of net periodic pension and OPEB costs in Note 10, bPension and Other Postretirement Employee Benefit Plans.b
[2]	This balance consists of unrealized foreign currency translation adjustments related to the operations of our Canadian subsidiary before its functional currency was changed from Canadian dollars to U.S. dollars in 2012.

Pension_and_Other_Postretireme2

Pension and Other Postretirement Employee Benefit Plans - Additional Information (Detail 1) (USD $)

9 Months Ended

0 Months Ended

3 Months Ended

9 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

Sep. 30, 2013

Sep. 30, 2012

Oct. 15, 2013

Dec. 31, 2013

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Company-Sponsored Pension Plans

Company-Sponsored Pension Plans

Company-Sponsored Pension Plans

Company-Sponsored Pension Plans

Non Qualified Pension Plans

Pension Plan, Defined Benefit [Member]

Pension Plan, Defined Benefit [Member]

Cost of Sales

Cost of Sales

Selling, General and Administrative Expenses

Selling, General and Administrative Expenses

Defined Benefit Plan Disclosure [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

Funded status

'

'

'

'

'

($78,700,000)

'

'

'

'

'

'

'

Employer contribution

'

'

2,400,000

'

12,600,000

'

200,000

'

'

'

'

'

'

Defined Benefit Plan, Estimated Future Employer Contributions in Current Fiscal Year

'

'

'

1,900,000

'

'

300,000

'

'

'

'

'

'

Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, before Tax

'

'

'

'

'

'

'

'

'

3,400,000

10,900,000

800,000

2,400,000

Pension and Other Postretirement Benefit Expense

7,801,000

6,697,000

'

'

'

'

'

'

'

'

'

'

'

Defined Benefit Plan, Recognized Net Gain (Loss) Due to Curtailments

'

'

'

'

'

'

'

($769,000)

$0

'

'

'

'

Pension_and_Other_Postretireme3

Pension and Other Postretirement Employee Benefit Plans Components of Net Periodic Cost of Pension and Other Postretirement Employee Benefit Plans (Detail 2) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Pension Benefit Plans	'	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'
Service cost	$435	$622	$1,304	$1,864
Interest cost	3,343	3,673	10,031	11,020
Expected return on plan assets	-4,588	-4,921	-13,764	-14,764
Amortization of prior service cost (credit)	83	158	252	475
Amortization of actuarial loss	3,711	3,021	11,130	9,064
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Curtailments	'	'	769	0
Net periodic cost	2,984	2,553	9,722	7,659
Other Postretirement Employee Benefit Plans	'	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'
Service cost	138	173	414	520
Interest cost	1,182	1,454	3,547	4,361
Expected return on plan assets	0	0	0	0
Amortization of prior service cost (credit)	-125	-670	-376	-2,010
Amortization of actuarial loss	0	0	0	0
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Curtailments	'	'	0	0
Net periodic cost	$1,195	$957	$3,585	$2,871

Earnings_per_Common_Share_Reco

Earnings per Common Share Reconciliation of Number of Common Shares Used in Calculating Basic and Diluted Net Earnings Per Share (Detail) (USD $)	3 Months Ended				9 Months Ended
	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012
Earnings Per Share [Abstract]	'		'		'		'
Basic average common shares outstanding	22,026,879	[1]	23,360,967	[1]	22,388,930	[1]	23,337,323	[1]
Incremental shares due to:	'		'		'		'
Restricted stock units	69,902		51,230		61,956		43,580
Performance shares	131,092		287,491		114,369		264,021
Diluted average common shares outstanding	22,227,873		23,699,688		22,565,255		23,644,924
Basic net earnings per common share (in dollars per share)	$0.60		$0.82		$1.08		$1.90
Diluted net earnings per common share (in dollars per share)	$0.60		$0.80		$1.07		$1.87
Anti-dilutive shares excluded from calculation	1,434		29,382		106,265		132,273
[1]	Basic average common shares outstanding include restricted stock awards that are fully vested, but are deferred for future issuance.

EquityBased_Compensation_Addit

Equity-Based Compensation - Additional Information (Detail) (USD $)	3 Months Ended			9 Months Ended		12 Months Ended
	Sep. 30, 2013	Mar. 31, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'	'	'
Shares issued (in shares)	48,971	'	'	'	'	'
Cash paid for minimum tax withholdings	'	'	'	$4,173,000	$12,965,000	'
Share based compensation expense	-1,816,000	'	-2,250,000	-5,067,000	-5,977,000	'
Restricted stock units	'	'	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'	'	'
Cash paid for minimum tax withholdings	2,000,000	'	'	'	'	'
Share based compensation expense	-462,000	'	-297,000	-1,326,000	-693,000	'
Performance shares	'	'	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'	'	'
Settlement and distribution of shares issued (in shares)	'	'	'	'	'	138,226
Number of shares settled as percentage of outstanding amount	'	101.40%	'	'	'	'
Shares issued (in shares)	'	93,744	'	'	'	'
Cash paid for minimum tax withholdings	'	2,200,000	'	'	'	'
Share based compensation expense	-1,354,000	'	-1,953,000	-3,741,000	-5,284,000	'
Performance shares | Minimum [Member]	'	'	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'	'	'
Percentage of amount subject to performance share award of number of shares actually issued	0.00%	'	'	0.00%	'	'
Performance shares | Maximum [Member]	'	'	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'	'	'
Percentage of amount subject to performance share award of number of shares actually issued	200.00%	'	'	200.00%	'	'
Director	'	'	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'	'	'
Share based compensation expense	-400,000	'	-1,800,000	-2,700,000	-1,700,000	'
Deferred Compensation Share-based Arrangements, Liability, Classified, Noncurrent	$11,800,000	'	'	$11,800,000	'	9,100,000

EquityBased_Compensation_Emplo

Equity-Based Compensation Employee Equity Based Compensation Expense (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Employee equity-based compensation	$1,816	$2,250	$5,067	$5,977
Restricted stock units	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Employee equity-based compensation	462	297	1,326	693
Performance shares	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Employee equity-based compensation	$1,354	$1,953	$3,741	$5,284

EquityBased_Compensation_Summa

Equity-Based Compensation Summary of Number of Share-Based Awards Granted (Detail) (USD $)	9 Months Ended
	Sep. 30, 2013
Restricted stock units	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Number of share-based awards granted	72,702
Grant-date fair value of awards per share	$43.44
Performance shares	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Number of share-based awards granted	124,513
Grant-date fair value of awards per share	$63.46

Fair_Value_Measurements_Estima

Fair Value Measurements Estimated Fair Values of Financial Instruments (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Carrying Amount	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Cash, restricted cash, and short-term investments (Level 1)	$111,460	$34,079
Long-term debt (Level 1)	650,000	523,933
Fair Value	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Cash, restricted cash, and short-term investments (Level 1)	111,460	34,079
Long-term debt (Level 1)	$651,550	$572,625

Segment_Information_Reportable

Segment Information Reportable Segments Information (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Segment Reporting Information [Line Items]	'	'	'	'
Net sales	$487,845	$480,233	$1,419,671	$1,411,603
Income from operations	18,842	39,762	61,039	109,907
Depreciation and amortization	22,180	19,199	67,584	58,477
Consumer Products	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Net sales	292,935	292,959	867,545	853,911
Income from operations	13,445	18,453	38,384	70,420
Depreciation and amortization	16,002	13,275	49,124	39,692
Pulp and Paperboard	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Net sales	194,910	187,274	552,126	557,692	[1]
Income from operations	16,289	34,449	58,614	78,108	[1]
Depreciation and amortization	5,758	5,525	17,195	17,547
Operating Segments	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Income from operations	29,734	52,902	96,998	148,528
Corporate	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Income from operations	-10,892	-13,140	-35,959	-38,621
Depreciation and amortization	$420	$399	$1,265	$1,238
[1]	Results for Pulp and Paperboard for the nine months ended SeptemberB 30, 2012 include income and expenses associated with the November 2011 sale of the Lewiston, Idaho sawmill, the effects of which were immaterial in the aggregate.

Supplemental_Guarantor_Financi2

Supplemental Guarantor Financial Information Condensed Consolidating Statement of Operations and Comprehensive Income (Loss) (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013		Sep. 30, 2012
Condensed Financial Statements, Captions [Line Items]	'	'	'		'
Net sales	$487,845	$480,233	$1,419,671		$1,411,603
Cost and expenses:	'	'	'		'
Cost of sales	-441,237	-409,822	-1,269,967		-1,211,444
Selling, general and administrative expenses	-27,766	-30,649	-88,665		-90,252
Total operating costs and expenses	-469,003	-440,471	-1,358,632		-1,301,696
Income (loss) from operations	18,842	39,762	61,039		109,907
Interest expense, net	-10,708	-7,900	-32,784		-26,775
Gains (Losses) on Extinguishment of Debt	0	0	-17,058		0
Earnings (loss) before income taxes	8,134	31,862	11,197		83,132
Income tax (provision) benefit	5,183	-12,798	12,896		-38,853
Net earnings (loss)	13,317	19,064	24,093		44,279
Other comprehensive income, net of tax	2,277	1,521	7,189	[1]	4,563
Comprehensive income	15,594	20,585	31,282		48,842
Issuer	'	'	'		'
Condensed Financial Statements, Captions [Line Items]	'	'	'		'
Net sales	356,549	350,988	1,048,872		1,035,433
Cost and expenses:	'	'	'		'
Cost of sales	-314,509	-288,150	-912,449		-865,092
Selling, general and administrative expenses	-24,983	-24,592	-70,102		-72,081
Total operating costs and expenses	-339,492	-312,742	-982,551		-937,173
Income (loss) from operations	17,057	38,246	66,321		98,260
Interest expense, net	-10,708	-7,900	-32,784		-26,775
Gains (Losses) on Extinguishment of Debt	'	'	-17,058		'
Earnings (loss) before income taxes	6,349	30,346	16,479		71,485
Income tax (provision) benefit	5,233	-20,364	10,388		-37,002
Equity in income (loss) of subsidiary	-619	4,973	-9,028		9,580
Net earnings (loss)	10,963	14,955	17,839		44,063
Other comprehensive income, net of tax	2,277	1,521	7,189		4,563
Comprehensive income	13,240	16,476	25,028		48,626
Guarantor Subsidiaries	'	'	'		'
Condensed Financial Statements, Captions [Line Items]	'	'	'		'
Net sales	128,115	127,742	363,467		371,351
Cost and expenses:	'	'	'		'
Cost of sales	-123,418	-120,908	-351,493		-343,637
Selling, general and administrative expenses	-2,468	-5,567	-17,092		-16,700
Total operating costs and expenses	-125,886	-126,475	-368,585		-360,337
Income (loss) from operations	2,229	1,267	-5,118		11,014
Interest expense, net	'	0	'		0
Gains (Losses) on Extinguishment of Debt	'	'	0		'
Earnings (loss) before income taxes	2,229	1,267	-5,118		11,014
Income tax (provision) benefit	-2,513	3,123	-3,821		-1,999
Equity in income (loss) of subsidiary	-335	583	-89		565
Net earnings (loss)	-619	4,973	-9,028		9,580
Comprehensive income	-619	4,973	-9,028		9,580
Non-Guarantor Subsidiaries	'	'	'		'
Condensed Financial Statements, Captions [Line Items]	'	'	'		'
Net sales	8,176	6,500	22,317		19,804
Cost and expenses:	'	'	'		'
Cost of sales	-8,305	-5,761	-21,010		-17,700
Selling, general and administrative expenses	-315	-490	-1,471		-1,471
Total operating costs and expenses	-8,620	-6,251	-22,481		-19,171
Income (loss) from operations	-444	249	-164		633
Interest expense, net	'	0	'		0
Gains (Losses) on Extinguishment of Debt	'	'	0		'
Earnings (loss) before income taxes	-444	249	-164		633
Income tax (provision) benefit	109	334	75		-68
Net earnings (loss)	-335	583	-89		565
Comprehensive income	-335	583	-89		565
Eliminations	'	'	'		'
Condensed Financial Statements, Captions [Line Items]	'	'	'		'
Net sales	-4,995	-4,997	-14,985		-14,985
Cost and expenses:	'	'	'		'
Cost of sales	4,995	4,997	14,985		'
Total operating costs and expenses	4,995	4,997	14,985		14,985
Gains (Losses) on Extinguishment of Debt	'	'	0		'
Income tax (provision) benefit	2,354	4,109	6,254		216
Equity in income (loss) of subsidiary	954	-5,556	9,117		-10,145
Net earnings (loss)	3,308	-1,447	15,371		-9,929
Comprehensive income	$3,308	($1,447)	$15,371		($9,929)
[1]	Net periodic costs associated with our pension and other postretirement employee benefit, or OPEB, plans included in other comprehensive income and reclassified from accumulated other comprehensive loss includes $11.1 million of actuarial loss amortization, $0.8 million of curtailments, $0.1 million of deferred tax amortization related to actuarial gains and $0.1 million related to prior service credit, net of tax of $4.6 million. These accumulated other comprehensive loss components, with the exception of the deferred tax amortization related to actuarial gains, are included in the computation of net periodic pension and OPEB costs in Note 10, bPension and Other Postretirement Employee Benefit Plans.b

Supplemental_Guarantor_Financi3

Supplemental Guarantor Financial Information Condensed Consolidating Balance Sheet (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2012	Dec. 31, 2011
In Thousands, unless otherwise specified
Current assets:	'	'	'	'
Cash	$20,929	$12,579	$19,564	$8,439
Restricted cash	1,500	0	'	'
Short-term investments	89,000	20,000	'	'
Receivables, net	168,519	154,143	'	'
Taxes receivable	8,380	20,828	'	'
Inventories	253,440	231,466	'	'
Deferred tax assets	28,356	17,136	'	'
Prepaid expenses	8,210	12,314	'	'
Total current assets	578,334	468,466	'	'
Property, plant and equipment, net	872,762	877,377	'	'
Goodwill	229,533	229,533	'	'
Intangible assets, net	42,467	47,753	'	'
Other assets, net	10,255	10,327	'	'
TOTAL ASSETS	1,733,351	1,633,456	'	'
Current liabilities:	'	'	'	'
Accounts payable and accrued liabilities	204,081	165,596	'	'
Current liability for pensions and other postretirement employee benefits	9,137	9,137	'	'
Total current liabilities	213,218	174,733	'	'
Long-term debt	650,000	523,933	'	'
Liability for pensions and other postretirement employee benefits	187,410	204,163	'	'
Other long-term obligations	51,021	50,910	'	'
Accrued taxes	68,164	78,699	'	'
Deferred tax liabilities (assets)	66,253	60,124	'	'
Accumulated other comprehensive loss, net of tax	-108,504	-115,693	'	'
Stockholders' equity excluding accumulated other comprehensive loss	605,789	656,587	'	'
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	1,733,351	1,633,456	'	'
Issuer	'	'	'	'
Current assets:	'	'	'	'
Cash	19,400	11,105	12,720	2,146
Restricted cash	1,500	'	'	'
Short-term investments	89,000	20,000	'	'
Receivables, net	121,636	109,129	'	'
Taxes receivable	9,069	20,712	'	'
Inventories	190,760	163,422	'	'
Deferred tax assets	22,453	11,750	'	'
Prepaid expenses	7,382	11,441	'	'
Total current assets	461,200	347,559	'	'
Property, plant and equipment, net	620,802	618,076	'	'
Goodwill	229,533	229,533	'	'
Intangible assets, net	0	0	'	'
Intercompany receivable (payable)	54,106	68,951	'	'
Investment in subsidiary	251,199	249,010	'	'
Other assets, net	9,367	9,948	'	'
TOTAL ASSETS	1,626,207	1,523,077	'	'
Current liabilities:	'	'	'	'
Accounts payable and accrued liabilities	164,144	132,360	'	'
Current liability for pensions and other postretirement employee benefits	9,137	9,137	'	'
Total current liabilities	173,281	141,497	'	'
Long-term debt	650,000	523,933	'	'
Liability for pensions and other postretirement employee benefits	187,410	204,163	'	'
Other long-term obligations	50,787	49,102	'	'
Accrued taxes	66,059	76,617	'	'
Deferred tax liabilities (assets)	1,385	-13,129	'	'
Accumulated other comprehensive loss, net of tax	-108,504	-115,693	'	'
Stockholders' equity excluding accumulated other comprehensive loss	605,789	656,587	'	'
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	1,626,207	1,523,077	'	'
Guarantor Subsidiaries	'	'	'	'
Current assets:	'	'	'	'
Cash	1	5	5,365	901
Receivables, net	45,546	41,431	'	'
Taxes receivable	-9,037	116	'	'
Inventories	58,469	63,476	'	'
Deferred tax assets	7,980	4,595	'	'
Prepaid expenses	685	708	'	'
Total current assets	103,644	110,331	'	'
Property, plant and equipment, net	235,039	242,818	'	'
Intangible assets, net	41,254	46,379	'	'
Intercompany receivable (payable)	-36,816	-56,153	'	'
Investment in subsidiary	10,141	10,055	'	'
Other assets, net	888	379	'	'
TOTAL ASSETS	354,150	353,809	'	'
Current liabilities:	'	'	'	'
Accounts payable and accrued liabilities	38,183	30,630	'	'
Total current liabilities	38,183	30,630	'	'
Other long-term obligations	234	1,808	'	'
Accrued taxes	1,790	1,771	'	'
Deferred tax liabilities (assets)	62,744	70,590	'	'
Stockholders' equity excluding accumulated other comprehensive loss	251,199	249,010	'	'
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	354,150	353,809	'	'
Non-Guarantor Subsidiaries	'	'	'	'
Current assets:	'	'	'	'
Cash	1,528	1,469	1,479	5,392
Receivables, net	3,365	5,612	'	'
Taxes receivable	83	0	'	'
Inventories	4,211	4,568	'	'
Deferred tax assets	0	0	'	'
Prepaid expenses	143	165	'	'
Total current assets	9,330	11,814	'	'
Property, plant and equipment, net	16,921	16,483	'	'
Intangible assets, net	1,213	1,374	'	'
Intercompany receivable (payable)	-11,035	-12,007	'	'
TOTAL ASSETS	16,429	17,664	'	'
Current liabilities:	'	'	'	'
Accounts payable and accrued liabilities	3,782	4,635	'	'
Total current liabilities	3,782	4,635	'	'
Accrued taxes	315	311	'	'
Deferred tax liabilities (assets)	2,191	2,663	'	'
Stockholders' equity excluding accumulated other comprehensive loss	10,141	10,055	'	'
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	16,429	17,664	'	'
Eliminations	'	'	'	'
Current assets:	'	'	'	'
Cash	0	0	0	0
Receivables, net	-2,028	-2,029	'	'
Taxes receivable	8,265	'	'	'
Deferred tax assets	-2,077	791	'	'
Total current assets	4,160	-1,238	'	'
Intercompany receivable (payable)	-6,255	-791	'	'
Investment in subsidiary	-261,340	-259,065	'	'
TOTAL ASSETS	-263,435	-261,094	'	'
Current liabilities:	'	'	'	'
Accounts payable and accrued liabilities	-2,028	-2,029	'	'
Total current liabilities	-2,028	-2,029	'	'
Deferred tax liabilities (assets)	-67	0	'	'
Stockholders' equity excluding accumulated other comprehensive loss	-261,340	-259,065	'	'
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	($263,435)	($261,094)	'	'

Supplemental_Guarantor_Financi4

Supplemental Guarantor Financial Information Condensed Consolidating Statement of Cash Flows (Detail) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
CASH FLOWS FROM OPERATING ACTIVITIES	'	'
Net earnings (loss)	$24,093	$44,279
Adjustments to reconcile net earnings to net cash provided by (used in) operating activities:	'	'
Depreciation and amortization	67,584	58,477
Deferred tax expense (benefit)	-9,678	13,257
Equity-based compensation expense	7,758	7,681
Employee benefit plans	7,801	6,697
Amortization of Financing Costs and Discounts	4,490	1,508
Gain (Loss) on Disposition of Assets	35	1,501
Changes in working capital, net	47	51,434
Change in taxes receivable, net	12,448	-1,918
Excess tax benefits from equity-based payment arrangements	0	-9,193
Change in non-current accrued taxes	-10,535	4,161
Funding of qualified pension plans	-12,611	-17,625
Other Operating Activities, Cash Flow Statement	108	324
Net cash provided by operating activities	91,540	160,583
CASH FLOWS FROM INVESTING ACTIVITIES	'	'
Change in short-term investments, net	-69,000	18,001
Additions to plant and equipment	-54,400	-155,365
Proceeds from Sale of Productive Assets	0	1,035
Net cash used for investing activities	-123,400	-136,329
CASH FLOWS FROM FINANCING ACTIVITIES	'	'
Repayment of Cellu Tissue debt	-150,000	0
Payments for Repurchase of Common Stock	-75,783	-9,355
Investment (to) from Parent	0	0
Excess tax benefits from equity-based payment arrangements	0	9,193
Payment of tax withholdings on equity-based payment arrangements	-4,173	-12,965
Net cash (used for) provided by financing activities	40,210	-13,129
Increase in cash	8,350	11,125
Cash at beginning of period	12,579	8,439
Cash at end of period	20,929	19,564
Proceeds from Issuance of Long-term Debt	275,000	0
Payments of Debt Issuance Costs	-4,834	-2
Issuer	'	'
CASH FLOWS FROM OPERATING ACTIVITIES	'	'
Net earnings (loss)	17,839	44,063
Adjustments to reconcile net earnings to net cash provided by (used in) operating activities:	'	'
Depreciation and amortization	40,337	35,244
Deferred tax expense (benefit)	-776	-6,040
Equity-based compensation expense	7,758	7,681
Employee benefit plans	7,801	6,697
Amortization of Financing Costs and Discounts	4,490	1,508
Gain (Loss) on Disposition of Assets	0	487
Changes in working capital, net	-7,488	16,641
Change in taxes receivable, net	11,643	-3,121
Excess tax benefits from equity-based payment arrangements	'	-9,193
Change in non-current accrued taxes	-10,558	4,631
Funding of qualified pension plans	-12,611	-17,625
Other Operating Activities, Cash Flow Statement	209	531
Net cash provided by operating activities	58,644	81,504
CASH FLOWS FROM INVESTING ACTIVITIES	'	'
Change in short-term investments, net	-69,000	18,001
Additions to plant and equipment	-40,598	-146,256
Proceeds from Sale of Productive Assets	'	0
Net cash used for investing activities	-109,598	-128,255
CASH FLOWS FROM FINANCING ACTIVITIES	'	'
Repayment of Cellu Tissue debt	-150,000	'
Payments for Repurchase of Common Stock	-75,783	-9,355
Investment (to) from Parent	19,039	70,454
Excess tax benefits from equity-based payment arrangements	'	9,193
Payment of tax withholdings on equity-based payment arrangements	-4,173	-12,965
Net cash (used for) provided by financing activities	59,249	57,325
Increase in cash	8,295	10,574
Cash at beginning of period	11,105	2,146
Cash at end of period	19,400	12,720
Proceeds from Issuance of Long-term Debt	275,000	'
Payments of Debt Issuance Costs	-4,834	-2
Guarantor Subsidiaries	'	'
CASH FLOWS FROM OPERATING ACTIVITIES	'	'
Net earnings (loss)	-9,028	9,580
Adjustments to reconcile net earnings to net cash provided by (used in) operating activities:	'	'
Depreciation and amortization	25,590	21,654
Deferred tax expense (benefit)	-11,231	-3,913
Equity-based compensation expense	0	0
Employee benefit plans	0	0
Amortization of Financing Costs and Discounts	0	0
Gain (Loss) on Disposition of Assets	34	1,014
Changes in working capital, net	5,748	35,456
Change in taxes receivable, net	9,153	1,701
Excess tax benefits from equity-based payment arrangements	'	0
Change in non-current accrued taxes	19	59
Funding of qualified pension plans	0	0
Other Operating Activities, Cash Flow Statement	-101	-207
Net cash provided by operating activities	20,184	65,344
CASH FLOWS FROM INVESTING ACTIVITIES	'	'
Change in short-term investments, net	0	0
Additions to plant and equipment	-11,854	-8,721
Proceeds from Sale of Productive Assets	'	1,035
Net cash used for investing activities	-11,854	-7,686
CASH FLOWS FROM FINANCING ACTIVITIES	'	'
Repayment of Cellu Tissue debt	0	'
Payments for Repurchase of Common Stock	0	0
Investment (to) from Parent	-8,334	-53,194
Excess tax benefits from equity-based payment arrangements	'	0
Payment of tax withholdings on equity-based payment arrangements	0	0
Net cash (used for) provided by financing activities	-8,334	-53,194
Increase in cash	-4	4,464
Cash at beginning of period	5	901
Cash at end of period	1	5,365
Proceeds from Issuance of Long-term Debt	0	'
Payments of Debt Issuance Costs	0	0
Non-Guarantor Subsidiaries	'	'
CASH FLOWS FROM OPERATING ACTIVITIES	'	'
Net earnings (loss)	-89	565
Adjustments to reconcile net earnings to net cash provided by (used in) operating activities:	'	'
Depreciation and amortization	1,657	1,579
Deferred tax expense (benefit)	-472	248
Equity-based compensation expense	0	0
Employee benefit plans	0	0
Amortization of Financing Costs and Discounts	0	0
Gain (Loss) on Disposition of Assets	1	0
Changes in working capital, net	1,787	-663
Change in taxes receivable, net	-83	-65
Excess tax benefits from equity-based payment arrangements	'	0
Change in non-current accrued taxes	4	-529
Funding of qualified pension plans	0	0
Other Operating Activities, Cash Flow Statement	0	0
Net cash provided by operating activities	2,805	1,135
CASH FLOWS FROM INVESTING ACTIVITIES	'	'
Change in short-term investments, net	0	0
Additions to plant and equipment	-1,948	-388
Proceeds from Sale of Productive Assets	'	0
Net cash used for investing activities	-1,948	-388
CASH FLOWS FROM FINANCING ACTIVITIES	'	'
Repayment of Cellu Tissue debt	0	'
Payments for Repurchase of Common Stock	0	0
Investment (to) from Parent	-798	-4,660
Excess tax benefits from equity-based payment arrangements	'	0
Payment of tax withholdings on equity-based payment arrangements	0	0
Net cash (used for) provided by financing activities	-798	-4,660
Increase in cash	59	-3,913
Cash at beginning of period	1,469	5,392
Cash at end of period	1,528	1,479
Proceeds from Issuance of Long-term Debt	0	'
Payments of Debt Issuance Costs	0	0
Eliminations	'	'
CASH FLOWS FROM OPERATING ACTIVITIES	'	'
Net earnings (loss)	15,371	-9,929
Adjustments to reconcile net earnings to net cash provided by (used in) operating activities:	'	'
Depreciation and amortization	0	0
Deferred tax expense (benefit)	2,801	22,962
Equity-based compensation expense	0	0
Employee benefit plans	0	0
Amortization of Financing Costs and Discounts	0	0
Gain (Loss) on Disposition of Assets	0	0
Changes in working capital, net	0	0
Change in taxes receivable, net	-8,265	-433
Excess tax benefits from equity-based payment arrangements	'	0
Change in non-current accrued taxes	0	0
Funding of qualified pension plans	0	0
Other Operating Activities, Cash Flow Statement	0	0
Net cash provided by operating activities	9,907	12,600
CASH FLOWS FROM INVESTING ACTIVITIES	'	'
Change in short-term investments, net	0	0
Additions to plant and equipment	0	0
Proceeds from Sale of Productive Assets	'	0
Net cash used for investing activities	0	0
CASH FLOWS FROM FINANCING ACTIVITIES	'	'
Repayment of Cellu Tissue debt	0	'
Payments for Repurchase of Common Stock	0	0
Investment (to) from Parent	-9,907	-12,600
Excess tax benefits from equity-based payment arrangements	'	0
Payment of tax withholdings on equity-based payment arrangements	0	0
Net cash (used for) provided by financing activities	-9,907	-12,600
Increase in cash	0	0
Cash at beginning of period	0	0
Cash at end of period	0	0
Proceeds from Issuance of Long-term Debt	0	'
Payments of Debt Issuance Costs	$0	$0