PotlatchDeltic (PCH) 10-K 14 Feb 14 2013 FY Annual report Financial data

Document_and_Entity_Informatio

Document and Entity Information Document (USD $)	12 Months Ended
In Millions, except Share data, unless otherwise specified	Dec. 31, 2013	Jan. 31, 2014	Jun. 30, 2013
Entity Information [Line Items]	'	'	'
Entity Registrant Name	'POTLATCH CORP	'	'
Entity Central Index Key	'0001338749	'	'
Current Fiscal Year End Date	'--12-31	'	'
Entity Filer Category	'Large Accelerated Filer	'	'
Document Type	'10-K	'	'
Document Period End Date	31-Dec-13	'	'
Document Fiscal Year Focus	'2013	'	'
Document Fiscal Period Focus	'FY	'	'
Amendment Flag	'false	'	'
Entity Common Stock, Shares Outstanding	'	40,536,879	'
Entity Well-known Seasoned Issuer	'Yes	'	'
Entity Voluntary Filers	'No	'	'
Entity Current Reporting Status	'Yes	'	'
Entity Public Float	'	'	$1,638.90

Consolidated_Condensed_Stateme

Consolidated Condensed Statements of Income (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Revenues	$570,289	$525,134	$497,421
Costs and expenses:	'	'	'
Cost of goods sold	408,772	390,666	382,252
Selling, general and administrative expenses	50,397	49,419	40,549
Environmental remediation charge	3,522	0	1,200
Asset impairment charge	0	107	1,180
Total costs and expenses	462,691	440,192	425,181
Operating income	107,598	84,942	72,240
Interest expense, net	-23,132	-25,539	-27,829
Income before income taxes	84,466	59,403	44,411
Income tax provision	-13,885	-16,809	-4,145
Net income	$70,581	$42,594	$40,266
Net income per common share:	'	'	'
Basic (in dollars per share)	$1.74	$1.06	$1
Diluted (in dollars per share)	$1.73	$1.05	$1
Distributions per share (in dollars per share)	$1.28	$1.24	$1.84

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Income (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Net income	$70,581	$42,594	$40,266
Other comprehensive income (loss), net of tax:	'	'	'
Net gain (loss) arising during the period, net of tax expense (benefit) of $21,424, $(5,968) and $(21,960)	33,510	-9,334	-34,347
Prior service credit arising during the period, net of tax expense of $0, $2,159 and $2,264	0	3,273	3,541
Amortization of actuarial loss included in net periodic cost, net of tax expense of $9,024, $7,208 and $5,414	14,114	11,275	8,469
Amortization of prior service credit included in net periodic cost, net of tax benefit of $(3,482), $(3,343) and $(3,062)	-5,446	-5,230	-4,790
Other comprehensive income (loss), net of tax	42,178	-16	-27,127
Comprehensive income	$112,759	$42,578	$13,139

Consolidated_Statements_of_Com1

Consolidated Statements of Comprehensive Income (Parenthetical) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Net gain (loss) arising during the period, Tax	$21,424	($5,968)	($21,960)
Prior service (cost) credit arising during the period, tax	0	2,159	2,264
Amortization of actuarial loss included in net periodic cost, tax	9,024	7,208	5,414
Amortization of prior service credit included in net periodic cost, tax	($3,482)	($3,343)	($3,062)

Consolidated_Condensed_Balance

Consolidated Condensed Balance Sheets (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Current assets:	'	'
Cash	$5,586	$16,985
Short-term investments	52,251	63,077
Receivables, net of allowance for doubtful accounts of $450	16,572	10,668
Inventories	36,275	28,928
Deferred tax assets	7,724	10,507
Other assets	11,961	7,932
Total current assets	130,369	138,097
Property, plant and equipment, net	59,976	58,050
Timber and timberlands, net	455,871	464,467
Deferred tax assets	21,576	43,292
Other assets	12,738	14,991
Total assets	680,530	718,897
Current liabilities:	'	'
Current installments on long-term debt	0	8,413
Current liability for pensions and other postretirement employee benefits	6,701	6,888
Accounts payable and accrued liabilities	43,617	48,286
Total current liabilities	50,318	63,587
Long-term debt	320,092	349,163
Liability for pensions and other postretirement employee benefits	83,619	145,047
Other long-term obligations	22,353	22,457
Total liabilities	476,382	580,254
Stockholders’ equity:	'	'
Preferred stock, authorized 4,000,000 shares, no shares issued	0	0
Common stock, $1 par value, authorized 100,000,000 shares, issued 40,536,879 and 40,389,180 shares	40,537	40,389
Additional paid-in capital	337,887	333,348
Accumulated deficit	-75,556	-94,196
Accumulated other comprehensive loss, net of tax of $(64,868) and $(91,834)	-98,720	-140,898
Total stockholders’ equity	204,148	138,643
Total liabilities and stockholders' equity	$680,530	$718,897

Consolidated_Condensed_Balance1

Consolidated Condensed Balance Sheets (Parentheticals) (USD $)	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Allowance for doubtful accounts	$450	$450
Preferred stock, authorized	4,000,000	4,000,000
Preferred stock, issued	0	0
Common stock, par value	$1	$1
Common stock, authorized	100,000,000	100,000,000
Common stock, issued	40,536,879	40,389,180
Accumulated other comprehensive loss, tax	($64,868)	($91,834)

Consolidated_Condensed_Stateme1

Consolidated Condensed Statements of Cash Flows (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
CASH FLOWS FROM OPERATING ACTIVITIES	'	'	'
Net income	$70,581	$42,594	$40,266
Adjustments to reconcile net income to net cash from operating activities:	'	'	'
Depreciation, depletion and amortization	26,962	26,247	29,092
Basis of real estate sold	2,904	5,048	10,219
Deferred income taxes	-2,467	15,992	4,218
Employee benefit plans	7,561	4,317	-2,181
Equity-based compensation expense	4,377	4,067	4,404
Other, net	-1,972	599	1,104
Change in receivables	-5,904	2,865	7,745
Change in inventories	-7,347	-325	-4,228
Change in prepaid expenses and other assets	1,668	-1,459	-8
Change in accounts payable and accrued liabilities	-3,468	163	-4,116
Funding of qualified pension plans	0	-21,630	-9,400
Operating related activities	-2,643	1,503	310
Net cash from operating activities	90,252	79,981	77,425
CASH FLOWS FROM INVESTING ACTIVITIES	'	'	'
Change in short-term investments	10,826	-88	22,260
Proceeds from company owned life insurance (COLI) loan	0	21,751	0
Additions to property, plant and equipment	-10,280	-5,636	-5,338
Additions to timber and timberlands	-13,373	-23,552	-11,548
Other, net	823	-1,122	-871
Net cash from investing activities	-12,004	-8,647	4,503
CASH FLOWS FROM FINANCING ACTIVITIES	'	'	'
Distributions to common stockholders	-51,868	-50,041	-73,921
Repayment of long-term debt	-36,663	-21,662	-5,011
Proceeds from issuance of long-term debt	0	12,000	0
Issuance of common stock	1,904	1,075	1,430
Change in book overdrafts	-955	462	157
Deferred financing costs	-25	-2,148	-698
Employee tax withholdings on vested performance share awards	-1,738	-1,714	-1,641
Other, net	-302	-140	-18
Net cash from financing activities	-89,647	-62,168	-79,702
Increase (decrease) in cash	-11,399	9,166	2,226
Cash at beginning of year	16,985	7,819	5,593
Cash at end of year	5,586	16,985	7,819
Cash paid (received) during the year for:	'	'	'
Interest	22,229	23,884	25,241
Income taxes, net	$20,097	$53	($5,984)

Consolidated_Statements_of_Sto

Consolidated Statements of Stockholders' Equity (USD $)	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
In Thousands, except Share data, unless otherwise specified
Balance, beginning of period at Dec. 31, 2010	$204,439	$40,033	$330,894	($52,733)	($113,755)
Balance, beginning of period (shares) at Dec. 31, 2010	'	40,032,587	'	'	'
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'	'	'	'
Exercise of stock options and stock awards (shares)	77,446	77,446	'	'	'
Exercise of stock options and stock awards	1,338	77	1,261	0	0
Performance share and restricted stock unit awards (shares)	'	92,137	'	'	'
Performance share and restricted stock unit awards	2,836	92	2,744	0	0
Net income	40,266	0	0	40,266	0
Pension plans and OPEB obligations	-27,127	0	0	0	-27,127
Transfer of assets from REIT to subsidiary	-5,693	0	-5,693	0	0
Common distributions, $1.84 per share 2011, $1.24 per share 2012, $1.28 per share 2013	-73,921	0	0	-73,921	0
Balance, end of period at Dec. 31, 2011	142,138	40,202	329,206	-86,388	-140,882
Balance, end of period (shares) at Dec. 31, 2011	'	40,202,170	'	'	'
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'	'	'	'
Exercise of stock options and stock awards (shares)	60,857	60,857	'	'	'
Exercise of stock options and stock awards	1,092	61	1,031	0	0
Performance share and restricted stock unit awards (shares)	'	126,153	'	'	'
Performance share and restricted stock unit awards	2,861	126	3,096	-361	0
Net income	42,594	0	0	42,594	0
Pension plans and OPEB obligations	-16	0	0	0	-16
Transfer of assets from REIT to subsidiary	15	0	15	0	0
Common distributions, $1.84 per share 2011, $1.24 per share 2012, $1.28 per share 2013	-50,041	0	0	-50,041	0
Balance, end of period at Dec. 31, 2012	138,643	40,389	333,348	-94,196	-140,898
Balance, end of period (shares) at Dec. 31, 2012	'	40,389,180	'	'	'
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'	'	'	'
Exercise of stock options and stock awards (shares)	70,968	70,968	'	'	'
Exercise of stock options and stock awards	1,904	71	1,833	0	0
Performance share and restricted stock unit awards (shares)	'	76,731	'	'	'
Performance share and restricted stock unit awards	2,710	77	2,706	-73	0
Net income	70,581	0	0	70,581	0
Pension plans and OPEB obligations	42,178	0	0	0	42,178
Common distributions, $1.84 per share 2011, $1.24 per share 2012, $1.28 per share 2013	-51,868	0	0	-51,868	0
Balance, end of period at Dec. 31, 2013	$204,148	$40,537	$337,887	($75,556)	($98,720)
Balance, end of period (shares) at Dec. 31, 2013	'	40,536,879	'	'	'

Consolidated_Statements_of_Sto1

Consolidated Statements of Stockholders' Equity (Parenthetical) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Common distributions, per share	$1.28	$1.24	$1.84

Summary_of_Principal_Accountin

Summary of Principal Accounting Policies	12 Months Ended
	Dec. 31, 2013
Accounting Policies [Abstract]	'
Summary of Principle Accounting Policies	'
	SUMMARY OF PRINCIPAL ACCOUNTING POLICIES
	CONSOLIDATION
	The Consolidated Financial Statements include the accounts of Potlatch Corporation and its subsidiaries after elimination of significant intercompany transactions and accounts. There are no significant unconsolidated subsidiaries.
	We are primarily engaged in activities associated with timberland management, including the sale of timber, the management of approximately 1.4 million acres of timberlands and the purchase and sale of timberlands. We are also engaged in the manufacture and sale of wood products. Our timberlands and all of our wood products facilities are located within the continental United States. The primary market for our products is the United States. As discussed in Note 2: REIT Conversion, we converted to a Real Estate Investment Trust, or REIT, effective January 1, 2006.
	SIGNIFICANT ESTIMATES
	The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America, which we refer to in this report as U.S. 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 revenues and expenses during the reporting period. Actual results could differ from those estimates and assumptions.
	Significant estimates are described in further detail in this section and the following Notes to Consolidated Financial Statements. Significant estimates include timber volumes, pension and postretirement obligation assumptions, environmental liabilities, fair value of derivative instruments and assumptions utilized for asset and disposal group impairment tests.
	EQUITY-BASED COMPENSATION
	Equity-based awards are measured at fair value on the dates they are granted or modified. These measurements establish the cost of the equity-based awards for accounting purposes. The cost of the equity-based award is then recognized in the Consolidated Statements of Income over each employee’s required service period. See Note 16: Equity-Based Compensation Plans for more information about our equity-based compensation.
	INVENTORIES
	Inventories are stated at the lower of cost or market. The last-in, first-out method is used to determine cost of logs, lumber and plywood for most of our operations. The average cost method is used to determine cost of all other inventories. Expenses associated with idle capacity or other curtailments of production are reflected in cost of goods sold in the periods incurred.
	PROPERTY, PLANT AND EQUIPMENT
	Property, plant and equipment are valued at cost less accumulated depreciation. Depreciation of buildings, equipment and other depreciable assets is determined using the straight-line method of depreciation. Estimated useful lives range from 30 to 40 years for buildings and structures and 2 to 25 years for equipment.
	Major improvements and replacements of property are capitalized. Maintenance, repairs, and minor improvements and replacements are expensed. Upon retirement or other disposition of property, applicable cost and accumulated depreciation or amortization are removed from the accounts. Any gains or losses are included in earnings.
	TIMBER AND TIMBERLANDS
	Timber and timberlands are valued at cost less accumulated depletion and amortization. For fee timber, the capitalized cost includes costs related to stand establishment, such as site preparation, including all costs of preparing the land for planting, cost of seeds or seedlings, tree planting, including labor, materials, depreciation of company-owned equipment and the cost of contract services. Upon completion of planting activities and field inspection to assure the planting operation was successful, a plantation will be considered “established.” Subsequent expenditures made to maintain the integrity or enhance the growth of an established plantation or stand are expensed. Post-establishment expenses include release spray treatments, pest control activities, thinning operations, fertilization and replanting seedlings lost through mortality. Expenditures for forest management consist of regularly recurring items necessary for ownership and administration of timber producing property such as fire protection, property taxes and insurance, silviculture costs incurred subsequent to stand establishment, cruising (physical inventory), property maintenance and salaries, supplies, travel, record-keeping and other normal recurring administrative personnel costs. These expenditures are accounted for as current operating expenses. Timberland purchased on the open market is capitalized and the cost is allocated to the relative values of the component items as appraised, such as timberland, merchantable sawlogs, merchantable pulpwood, reproduction (young growth not merchantable), logging roads and other land improvements. The capitalized cost includes purchase price, title search and title recording, transfer taxes and fees, timber cruises, appraisals and running of boundary lines.
	The aggregate estimated volume of current standing timber inventory is updated at least annually to reflect increases in merchantable timber due to reclassification of young growth to merchantable timber, the annual growth rates of merchantable timber and the acquisition of additional merchantable timber, and to reflect decreases due to timber harvests and land sales. Timber volumes are estimated from cruises of the timber tracts, which are completed on our timberlands on approximately a five to ten year cycle. Since the individual cruises collect field data at different times for specific sites, the growth model projects standing inventory from the cruise date to a common reporting date. Annual growth rates for the merchantable inventory have historically been in the range of 2%-5%.
	Reproduction accounts are reviewed annually, and dollars are transferred from reproduction accounts to merchantable timber accounts on a reasonable and consistent basis. Volumes and the related accumulated costs are tracked and, as the timber is harvested, the cost is amortized to depletion.
	Depletion represents the amount charged to expense for logs cut from fee timber. Generally, rates at which timber is depleted are calculated annually for each of our Resource regions by dividing the beginning of year balance of the timber accounts by the forest inventory volume, after inventory updates for growth projection adjustments and new timber cruises.
	The base cost of logging roads, such as the clearing, grading, and ditching, is not amortized and remains a capitalized item until obliteration or other disposition, while other portions of the initial cost, such as bridges, culverts and gravel surfacing are amortized over their useful lives, which range from 5 to 20 years. Costs associated with temporary logging roads that will not become part of our road system are expensed as incurred.
	REAL ESTATE SALES
	Sales of non-core timberland are considered to be part of our normal operations. We therefore classify revenue and costs associated with real estate sold in revenues and cost of goods sold, respectively, in our Consolidated Statements of Income. Cash generated from real estate sales is included as an operating activity in our Consolidated Statements of Cash Flows, and is adjusted for the basis of real estate sold.
	LIKE-KIND EXCHANGES AND RESTRICTED CASH
	In order to acquire and sell assets, primarily timberlands, in a tax efficient manner, we sometimes enter into like-kind exchange (LKE) tax-deferred transactions. There are two main types of LKE transactions: forward transactions, in which property is sold and the proceeds are reinvested by acquiring similar property; and reverse
	transactions, in which property is acquired and similar property is subsequently sold by us. Both forward and reverse transactions must be completed within prescribed time periods under Internal Revenue Code section 1031.
	We use a qualified intermediary to facilitate LKE transactions. Proceeds from forward transactions are held by the intermediary and are classified as restricted cash, within non-current other assets, because the funds must be reinvested in similar properties. If the acquisition of suitable LKE properties is not completed within 180 days of the sale of the company-owned property, the proceeds are distributed to us by the intermediary and are reclassified as available cash and applicable income taxes are determined. In the case of reverse transactions in which we have not yet completed LKE sales of company-owned land to match with property purchased on our behalf by the intermediary, the amount associated with the property purchased on our behalf but not yet matched with LKE sales is classified as a non-current asset and included in “Timber and timberlands, net” in our Consolidated Balance Sheets and as “Additions to timber and timberlands” in the investing activities section of our Consolidated Statements of Cash Flows.
	LONG-LIVED ASSETS
	Our long-lived assets are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable, as measured by its undiscounted estimated future cash flows. We use our operational budgets to estimate future cash flows. Budget estimates are adjusted periodically to reflect changing business conditions, and operations are reviewed, as appropriate, for impairment using the most current data available. In certain circumstances we may also use fair market value to determine the carrying value of certain assets. Assets to be disposed of are reported at the lower of carrying amount or fair value less cost to sell.
	We recognize a liability and an asset equal to the fair value of our legal obligations to perform asset retirement activities if the amount can be reasonably estimated. Our primary obligations relate to asbestos located within our manufacturing facilities and a landfill site. We have recorded assets and corresponding liabilities that are not material to our financial position or results of operations. We have also identified situations that would have resulted in the recognition of additional asset retirement obligations, except for an inability to reasonably estimate the fair value of the liability. Most of these situations relate to asbestos located within our manufacturing facilities where a settlement date or range of settlement dates cannot be specified. We review these obligations annually and do not expect them to have a material effect on our financial position, results of operations or cash flows.
	INCOME TAXES
	We use the asset and liability method of accounting for income taxes. Under this method, deferred tax assets and liabilities are recognized for the estimated future tax consequences attributable to differences between the financial statement carrying amounts of assets and liabilities and their respective tax bases, operating loss carryforwards and tax credit carryforwards. Deferred tax assets and liabilities are measured pursuant to tax laws using rates expected to apply to taxable income in the years in which the temporary differences are expected to be recovered or settled. We recognize the effect of a change in income tax rates on deferred tax assets and liabilities in the Consolidated Statements of Income and Consolidated Statements of Comprehensive Income in the period that includes the enactment date of the rate change. We record a valuation allowance to reduce the carrying amounts of deferred tax assets if it is more likely than not that such deferred tax assets will not be realized.
	REVENUE RECOGNITION
	We recognize revenue from the sale of timber when legal ownership and the risk of loss transfers to the buyer and the quantity sold is determinable. The company sells timber under delivered log agreements as well as through sales of standing timber, or stumpage. For delivered sales, revenue, which includes amounts billed for shipping and handling (logging and hauling of timber), is recognized when the log is delivered to the customer. Stumpage is sold using pay-as-cut, timber deed or lump-sum sale agreements. Under a pay-as-cut sales contract, the purchaser acquires the right to harvest specified timber on a tract, at an agreed upon price per unit. The sale and any related advances are recognized as revenue as the purchaser harvests the timber on the tract. Under a timber deed sale, the buyer agrees to purchase and harvest specified timber on a tract of land over the term of the contract, the risk of loss and title to the trees transfer to the buyer when the contract is signed and the buyer pays the full purchase price when the contract is signed. Revenue from a timber deed sale is recognized when the contract is signed. Under a lump-sum sale, the parties agree to a purchase price for all the timber available for harvest on a tract of land. Generally the purchase price is paid when the contract is signed. Title to the timber and risk of loss transfers to the buyer as the timber is harvested. Therefore, revenue under a lump-sum sale is recognized over the term of the contract based on the timber harvested compared to the total estimated timber available to be harvested. An adjustment may be required to the extent the actual timber harvested is different than the estimate of timber available.
	Substantially all of our real estate sales are considered cash sales, as we receive the entire consideration in cash at closing. Also at closing, all risks and rewards of ownership are transferred to the buyer, and we do not have a substantial continuing involvement in any of our properties after sales are consummated. We recognize revenue under the full accrual method for cash sales of real estate when the sale is consummated (i.e., at closing). Sales of properties that qualify for LKE tax-deferred treatment involve a third party intermediary that receives proceeds related to the property sold and holds the proceeds for reinvestment in like kind property. The proceeds are recorded as revenue when the third party intermediary receives them.
	We recognize revenue from the sale of manufactured wood products and residual by-products when there is persuasive evidence of a sales agreement, the price to the customer is fixed and determinable, collection is reasonably assured, and title and the risk of loss passes to the customer. Shipping terms generally indicate when title and the risk of loss have passed. Revenue is recognized at shipment for sales when shipping terms are FOB (free on board) shipping point. For sales where shipping terms are FOB destination, revenue is recognized when the goods are received by the customer. Shipping terms for wood products and related by-products depend upon the sales agreement with the customer.
	Revenue is recognized net of any sales taxes collected. Sales taxes, when collected, are recorded as a current liability and remitted to the appropriate governmental entities.
	SHIPPING AND HANDLING COSTS
	Costs for shipping and handling of manufactured goods are included in cost of goods sold in our Consolidated Statements of Income.

REIT_Conversion

REIT Conversion	12 Months Ended
	Dec. 31, 2013
REIT Conversion [Abstract]	'
REIT Conversion	'
	REIT CONVERSION
	Effective January 1, 2006, we restructured our operations to qualify for treatment as a Real Estate Investment Trust (REIT) for federal income tax purposes. As a REIT, we generally are not subject to federal corporate income taxes on our income from investments in real estate that we distribute to our stockholders, including the income derived from the sale of standing timber. The REIT tax rules require that we derive most of our income, other than income generated by a taxable REIT subsidiary, from investments in real estate, which for us primarily consists of income from the sale of our standing timber. Accordingly, we restructured to create a new parent company that holds our timberlands through a REIT subsidiary and substantially all of our non-timberland assets, consisting primarily of our manufacturing facilities, assets used for the harvesting of timber and the sale of logs, and selected land parcels that we expect to be sold or developed for higher and better use purposes through wholly owned taxable REIT subsidiaries, which we refer to collectively in this report as Potlatch TRS. Our use of Potlatch TRS, which is taxed as a C corporation, enables us to continue to engage in these non-REIT qualifying businesses and comply with the REIT requirements.

Earnings_per_Share

Earnings per Share	12 Months Ended
	Dec. 31, 2013
Earnings Per Share, Basic, Other Disclosures [Abstract]	'
Earnings per Share	'
	EARNINGS PER SHARE
	The following table reconciles the number of shares used in calculating the basic and diluted earnings per share for the years ended December 31:
	(Dollars in thousands, except per-share amounts)	2013		2012		2011
	Net income	$	70,581	$	42,594	$	40,266
	Basic weighted-average shares outstanding	40,502,878		40,333,333		40,159,141
	Incremental shares due to:
	Performance shares	133,766		134,079		146,157
	Restricted stock units	69,076		70,217		32,455
	Stock options	3,567		15,520		45,232
	Diluted weighted-average shares outstanding	40,709,287		40,553,149		40,382,985
	Basic net income per share	$	1.74	$	1.06	$	1
	Diluted net income per share	$	1.73	$	1.05	$	1
	Anti-dilutive shares excluded from the calculation:
	Performance shares	3,441		—		77,767
	Restricted stock units	—		315		1,500
	Total anti-dilutive shares excluded from the calculation	3,441		315		79,267

Shortterm_Investments

Short-term Investments	12 Months Ended
	Dec. 31, 2013
Short-term Investments [Abstract]	'
Short-term Investments	'
	SHORT-TERM INVESTMENTS
	Our short-term investments consist of diversified depository accounts, money market funds and variable rate demand obligations, all of which have very short maturity periods and therefore earn an interest rate commensurate with low-risk instruments. We classify our short-term investments as "available for sale" and there is no significant difference between cost and fair value. We do not attempt to hedge our exposure to interest rate risk for our short-term investments. All short-term investments of REIT funds are made in compliance with the requirements of the Internal Revenue Code with respect to qualifying REIT investments.

Inventories

Inventories	12 Months Ended
	Dec. 31, 2013
Inventory Disclosure [Abstract]	'
Inventories	'
	INVENTORIES
	(Dollars in thousands)	2013		2012
	Logs	$	14,975	$	12,493
	Lumber and other manufactured wood products	15,967		11,761
	Materials and supplies	5,333		4,674
		$	36,275	$	28,928
	Valued at lower of cost or market:
	Last-in, first-out basis	$	23,250	$	14,636
	Average cost basis	13,025		14,292
	Total inventories	$	36,275	$	28,928
	If the last-in, first-out inventory had been carried at average cost, the values would have been approximately $11.3 million, $10.6 million, and $9.7 million higher at December 31, 2013, 2012, and 2011, respectively. LIFO inventories valued at higher costs prevailing in prior years decreased net income by $0.9 million, $1.2 million and $0.8 million in 2013, 2012 and 2011, respectively.

Property_Plant_and_Equipment

Property, Plant and Equipment	12 Months Ended
	Dec. 31, 2013
Property, Plant and Equipment [Abstract]	'
Property, Plant and Equipment	'
	PROPERTY, PLANT AND EQUIPMENT
	(Dollars in thousands)	2013			2012
	Land and land improvements	$	17,201		$	16,448
	Buildings and structures	33,985			32,908
	Machinery and equipment	171,385			165,369
	Construction in progress	1,225			3,188
		223,796			217,913
	Less: accumulated depreciation	(163,820		)	(159,863		)
	Total property, plant and equipment	$	59,976		$	58,050
	Depreciation charged against operating income totaled $8.2 million, $8.8 million and $9.8 million in 2013, 2012 and 2011, respectively.

Timber_and_Timberlands

Timber and Timberlands	12 Months Ended
	Dec. 31, 2013
Timber and Timberlands [Abstract]	'
Timber and Timberlands	'
	TIMBER AND TIMBERLANDS
	(Dollars in thousands)	2013		2012
	Timber and timberlands	$	391,916	$	394,913
	Deposits on timberlands	—		7,871
	Logging roads	63,955		61,683
	Total timber and timberlands	$	455,871	$	464,467
	Depletion from company-owned lands totaled $14.6 million, $12.9 million and $14.1 million in 2013, 2012 and 2011, respectively. Amortization of logging roads totaled $2.7 million, $2.6 million and $2.4 million in 2013, 2012 and 2011, respectively.
	In 2012, we made two timberland acquisitions in and around our existing ownership in Arkansas. One acquisition was 2,981 acres for approximately $3.9 million, and the other was 6,304 acres for approximately $7.9 million. The deposits on timberland balance of $7.9 million at December 31, 2012 is related to amounts associated with the Arkansas timberland purchased on our behalf by a qualified LKE intermediary.
	Payments due under timber cutting contracts total $2.1 million, $4.5 million, $1.5 million and $4.2 million in 2014, 2015, 2016 and 2017, respectively.

Other_Assets

Other Assets	12 Months Ended
	Dec. 31, 2013
Other Assets [Abstract]	'
Other Assets	'
	OTHER ASSETS
	Current Other Assets
	(Dollars in thousands)	2013		2012
	Basis of real estate held for sale	$	10,010	$	5,871
	Deferred charges	1,008		1,066
	Prepaid expenses	943		995
	Total current other assets	$	11,961	$	7,932
	Noncurrent Other Assets
	(Dollars in thousands)	2013		2012
	Deferred charges	$	5,668	$	6,837
	Noncurrent investments	3,144		1,754
	Derivative asset associated with interest rate swaps	1,830		2,952
	Developed land held for sale	1,733		1,733
	Other	363		123
	Long-term note receivable	—		1,592
	Total noncurrent other assets	$	12,738	$	14,991
	Deferred charges primarily consist of deferred financing costs, which are being amortized over the life of the associated debt.

Income_Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2013
Income Tax Disclosure [Abstract]	'
Income Taxes	'
	INCOME TAXES
	As a REIT, we generally are not subject to federal and state corporate income taxes on income of the REIT that we distribute to our shareholders. We are, however, subject to corporate taxes on built-in gains (the excess of fair market value over tax basis on January 1, 2006) on sales of real property held by the REIT during the first ten years following the REIT conversion. The sale of standing timber is not subject to built-in gains tax. The Small Business Jobs Act of 2010 modified the built-in gains provisions to exempt sales of real properties in 2011, if five years of the recognition period had elapsed before January 1, 2011. The American Taxpayer Relief Act of 2012 extended the reduced five-year holding period for sales occurring in 2012 and 2013. Accordingly, the built-in gains tax does not apply to sales of real property that occurred in 2011, 2012 and 2013.
	We conduct certain activities through taxable REIT subsidiaries (TRS), which are subject to corporate-level federal and state income taxes. These activities are principally comprised of our wood products manufacturing operations and certain real estate investments held for development and resale.
	We reflect accrued interest related to tax obligations, as well as penalties, in our provision for income taxes. For the years ended December 31, 2013, 2012 and 2011, we recognized insignificant amounts related to interest and penalties in our tax provision. At December 31, 2013 and 2012, we had no accrued interest related to tax obligations and insignificant accrued interest receivable with respect to open tax refunds.
	The income tax provision consists of the following for the years ended December 31:
	(Dollars in thousands)	2013			2012			2011
	Current	$	16,352		$	292		$	(73	)
	Deferred	(2,754		)	8,197			4,990
	Net operating loss carryforwards	287			8,320			(772		)
	Income tax provision	$	13,885		$	16,809		$	4,145
	The income tax provision differs from the amount computed by applying the statutory federal income tax rate of 35% to income before income taxes due to the following for the years ended December 31:
	(Dollars in thousands)	2013			2012			2011
	U.S. federal statutory income tax	$	29,563		$	20,791		$	15,544
	REIT income not subject to federal income tax	(13,918		)	(5,241		)	(11,739		)
	Change in valuation allowance	(683		)	—			897
	State income taxes, net of federal income tax	942			1,615			54
	Domestic production activities deduction	(1,579		)	—			—
	All other items	(440		)	(356		)	(611		)
	Income tax provision	$	13,885		$	16,809		$	4,145
	Effective tax rate	16.4		%	28.3		%	9.3		%
	The tax effects of significant temporary differences creating deferred tax assets and liabilities at December 31 were:
	(Dollars in thousands)	2013			2012
	Deferred tax assets:
	Pensions	$	16,807		$	38,986
	Postretirement employee benefits	18,464			20,293
	Nondeductible accruals	2,405			3,841
	Inventories	2,636			3,126
	Incentive compensation	2,807			2,843
	Tax credits	2,135			2,678
	Employee benefits	1,586			1,795
	Net operating loss carryforwards	1,056			1,346
	Other	200			124
	Total deferred tax assets	48,096			75,032
	Valuation allowance	(2,184		)	(2,867		)
	Deferred tax assets, net of valuation allowance	45,912			72,165
	Deferred tax liabilities:
	Timber and timberlands	(5,871		)	(6,006		)
	Property, plant and equipment	(10,741		)	(12,360		)
	Total deferred tax liabilities	(16,612		)	(18,366		)
	Net deferred tax assets	$	29,300		$	53,799
	Net deferred tax assets and liabilities consist of:
	(Dollars in thousands)	2013			2012
	Current deferred tax assets	$	7,724		$	10,507
	Noncurrent deferred tax assets	21,576			43,292
	Net deferred tax assets	$	29,300		$	53,799
	With the exception of the valuation allowances discussed below, we believe it is more likely than not that we will have sufficient future taxable income to realize our deferred tax assets.
	Our valuation allowance on deferred taxes was $2.2 million at the end of 2013; which related to state net operating loss and tax credit carryforwards. The valuation allowance decreased $0.7 million in 2013 due to the change in actual use and expected future use of state net operating loss carryforwards and state credits.
	We have state net operating loss carryforwards of $24.0 million at December 31, 2013 which expire from 2014 through 2031. We have state investment tax credits of $3.2 million at December 31, 2013 which expire from 2016 through 2027.
	The following table summarizes the tax years subject to examination by major taxing jurisdictions:
	Jurisdiction	Years
	Federal	2008	-	2013
	Arkansas	2010	-	2013
	Michigan	2009	-	2013
	Minnesota	2009	-	2013
	Idaho	2010	-	2013
	During the fourth quarter of 2013 the IRS closed our federal income tax exams for 2009. As of December 31, 2013 our 2008 TRS federal income tax return is under exam. We do not expect the outcome of the exam to have a material effect on our Consolidated Financial Statements.
	As of December 31, 2013 and December 31, 2012, we did not have any liabilities for unrecognized tax benefits. We do not currently believe there is a reasonable possibility of recording a liability for unrecognized tax benefits within the next twelve months.

Debt

Debt	12 Months Ended
	Dec. 31, 2013
Debt Disclosure [Abstract]	'
Debt	'
	DEBT
	The following table presents our long-term debt as of December 31:
	(Dollars in thousands)	2013			2012
	Senior Notes, 7.50%, due 2019	$	150,000		$	150,000
	Revenue bonds, 5.90% to 7.75%, due 2014 through 20261	108,335			144,985
	Debentures, 6.95%, due 2015	22,500			22,500
	Medium-term notes, 8.75% to 8.89%, due 2016 through 2022	27,250			27,250
	Term loans, 2.95% due 2017 and 3.70% due 2020	12,000			12,000
	Other notes	—			13
		320,085			356,748
	Interest rate swaps	1,830			2,952
	Less unamortized discounts	(1,823		)	(2,124		)
		320,092			357,576
	Less current installments on long-term debt	—			(8,413		)
	Long-term debt	$	320,092		$	349,163
	1 In 2013, $36.7 million of long-term debt was redeemed prior to its scheduled maturities. This included $8.4 million that was due later in 2013 and $21.0 million that was the total amount due in 2014.
	UNSECURED CREDIT AGREEMENT
	Our current unsecured credit agreement, which expires on December 11, 2017, provides for a revolving line of credit of up to $250 million, including a $40 million subfacility for letters of credit and a $15 million subfacility for swing line loans. Usage under either or both subfacilities reduces availability under the revolving line of credit. Subject to certain conditions and agreement of the lenders, the bank credit facility may be increased by up to an additional $100 million. As of December 31, 2013, there were no borrowings outstanding under the revolving line of credit, and approximately $1.9 million of the letter of credit subfacility was being used to support several outstanding letters of credit. Available borrowing capacity at December 31, 2013 was $248.1 million.
	Pricing is set according to the type of borrowing. Eurodollar Rate Loans are issued at a rate equal to the British Bankers Association LIBOR Rate, while Base Rate Loans are issued at a rate equal to the Base Rate, which is a fluctuating rate per annum equal to the highest of (a) the Federal Funds Rate plus 1/2 of 1.00%, (b) the British Bankers Association LIBOR Rate that would then be applicable to a new Eurodollar Rate Loan with a one month Interest Period plus 1.00%, and (c) the rate of interest in effect for such day as publicly announced from time to time by Bank of America as its “prime rate.” The interest rates we pay for borrowings under either type of loan include an additional Applicable Rate, which can range from 1.25% to 2.50% for Eurodollar loans and from 0.25% to 1.50% for Base Rate loans, depending on the current Leverage Ratio, as defined below. As of December 31, 2013, we were able to borrow under the bank credit facility with the additional applicable rate of 1.50% for Eurodollar Rate Loans and 0.50% for Base Rate Loans, with commitment fees of 0.25% on the unused balance of the bank credit facility.
	TERM LOANS
	In December 2012, we entered into a $12 million term loan to fund two timberland acquisitions. The term loan consists of two $6 million tranches, with rates of 2.95% on the 2017 maturity and 3.70% on the 2020 maturity. The term loans contain the same covenants as those in the unsecured credit agreement.
	DEBT MATURITIES
	Scheduled payments due on long-term debt during each of the five years subsequent to December 31, 2013, are as follows:
	(Dollars in thousands)
	2014	$	—
	2015	22,500
	2016	5,000
	2017	11,000
	2018	14,250

Accounts_Payable_and_Accrued_L

Accounts Payable and Accrued Liabilities	12 Months Ended
	Dec. 31, 2013
Accounts Payable and Accrued Liabilities [Abstract]	'
Accounts Payable and Accrued Liabilities	'
	ACCOUNTS PAYABLE AND ACCRUED LIABILITIES
	(Dollars in thousands)	2013		2012
	Wages, salaries and employee benefits	$	15,908	$	14,992
	Trade accounts payable	7,702		6,599
	Taxes other than income taxes	6,247		6,363
	Interest	4,018		4,250
	Logging related expenses	1,600		3,456
	Deferred recreational lease income	880		899
	Freight	802		426
	Environmental remediation	—		4,250
	Book overdrafts	2,920		3,875
	Other	3,540		3,176
	Total	$	43,617	$	48,286

Other_LongTerm_Obligations

Other Long-Term Obligations	12 Months Ended
	Dec. 31, 2013
Other Long-term Debt [Abstract]	'
Other Long-Term Obligations	'
	OTHER LONG-TERM OBLIGATIONS
	(Dollars in thousands)	2013		2012
	Employee benefits and related liabilities	$	15,423	$	15,215
	Other	6,930		7,242
	Total	$	22,353	$	22,457

Financial_Instruments_and_Conc

Financial Instruments and Concentration of Risk	12 Months Ended
	Dec. 31, 2013
Derivative Instrument Detail [Abstract]	'
Financial Instruments and Concentration of Risk	'
	FINANCIAL INSTRUMENTS AND CONCENTRATION OF RISK
	FAIR VALUE OF FINANCIAL INSTRUMENTS
	Estimated fair values of our financial instruments as of December 31 are as follows:
		2013						2012
	(Dollars in thousands)	CARRYING			FAIR			CARRYING			FAIR
		AMOUNT			VALUE			AMOUNT			VALUE
	Cash and short-term investments (Level 1)	$	57,837		$	57,837		$	80,062		$	80,062
	Net derivative asset related to interest rate swaps (Level 2)	1,830			1,830			2,952			2,952
	Long-term debt (including current installments on long-term debt and fair value adjustments related to fair value swaps) (Level 2)	320,092			347,869			357,576			379,048
	A framework has been established for measuring fair value, which provides a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value. The three levels of the fair value hierarchy are described below.
	Level 1	Inputs to the valuation methodology are unadjusted quoted prices for identical assets or liabilities in active markets.
	Level 2	Inputs to the valuation methodology include:
	•	Quoted prices for similar assets or liabilities in active markets;
	•	Quoted prices for identical or similar assets or liabilities in inactive markets;
	•	Inputs other than quoted prices that are observable for the asset or liability; and
	•	Inputs that are derived principally from or corroborated by observable market data by correlation or other means.
	If the asset or liability has a specified (contractual) term, the Level 2 input must be observed for substantially the full term of the asset or liability.
	Level 3	Inputs to the valuation methodology are unobservable and significant to the fair value measurement.
	The 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 need to maximize the use of observable inputs and minimize the use of unobservable inputs.
	For cash and short-term investments, the carrying amount approximates fair value due to the short-term nature of these financial instruments. The fair value of the interest rate swaps was determined using discounted cash flow analysis on the expected cash flows of each derivative. The analysis reflects the contractual terms of the derivatives, including the period to maturity, and uses observable market-based inputs, including interest rate forward curves. The fair value of our long-term debt is estimated based upon the quoted market prices for the same or similar debt issues. Long-term debt for which there is no quoted market price, fair value is estimated based on average market prices for comparable liquid revenue bonds.
	DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES
	We record all derivatives on our balance sheet at fair value. Derivatives designated and qualifying as a hedge of the exposure to changes in the fair value of an asset, liability, or firm commitment attributable to a particular risk, such as interest rate risk, are considered fair value hedges. Hedge accounting generally provides for the matching of the timing of gain or loss recognition on the hedging instrument with the recognition of the changes in the fair value of the hedged asset or liability that is attributable to the hedged risk in a fair value hedge.
	We formally document all relationships between hedging instruments and hedged items, as well as the risk-management objective and strategy for undertaking various hedge transactions.
	FAIR VALUE HEDGES OF INTEREST RATE RISK
	As of December 31, 2013, we had six separate interest rate swaps with notional amounts totaling $46.75 million associated with our $22.5 million debentures and $24.25 million of our medium-term notes. The swaps convert interest payments with fixed rates ranging between 6.95% and 8.89% to a variable rate of 3-month LIBOR plus a spread between 4.738% and 6.518%. The interest rate swaps terminate at various dates between December 2015 and February 2018.
	NON-DESIGNATED LUMBER SWAP
	Derivatives not designated as hedges are not speculative and are used to manage our exposure to interest rate movements, commodity price movements or other identified risks, but do not meet the strict hedge accounting requirements. In February 2012, we entered into two commodity swap contracts that settled during the second quarter of 2012. In September 2011, we entered into two commodity swap contracts that settled in February 2012. Changes in the fair value of derivatives not designated in hedging relationships are recorded directly in net income. There were no outstanding lumber swap contracts at December 31, 2013 or 2012.
	The fair values of derivative instruments on our Consolidated Balance Sheets as of December 31 are as follows:
		DERIVATIVE ASSETS
			2013			2012
	(Dollars in thousands)	BALANCE SHEET	FAIR VALUE			FAIR VALUE
		LOCATION
	Derivatives designated as hedging instruments:
	Interest rate contracts	Other noncurrent assets	$	1,830		$	2,952
	Total derivatives designated as hedging instruments		$	1,830		$	2,952
	The effect of derivatives on the Consolidated Statements of Income for the years ended December 31, 2013, 2012 and 2011 are as follows:
		LOCATION OF GAIN (LOSS) RECOGNIZED IN	AMOUNT OF GAIN (LOSS)
		INCOME	RECOGNIZED IN INCOME
	(Dollars in thousands)		2013			2012			2011
	Derivatives designated in fair value hedging relationships:
	Interest rate contracts
	Realized gain on hedging instrument1	Interest expense	$	960		$	868		$	1,027
	Net gain recognized in income from fair value hedges		$	960		$	868		$	1,027
	Derivatives not designated as hedging instruments:
	Lumber contracts
	Unrealized gain (loss) on derivative	Cost of goods sold	$	—		$	(480	)	$	3,356
	Realized gain (loss) on derivative	Cost of goods sold	—			(396		)	1,164
	Net gain (loss) recognized in income from derivatives not designated as hedging instruments		$	—		$	(876	)	$	4,520
	1	Realized gain on hedging instrument consists of net cash settlements and interest accruals on the interest rate swaps during the period.
	CONCENTRATION OF RISK
	One customer accounted for slightly more than 10% of our revenues in the years ended December 31, 2013 and December 31, 2012.

Savings_Plans_Pension_Plans_an

Savings Plans, Pension Plans and Other Postretirement Employee Benefits	12 Months Ended
	Dec. 31, 2013
General Discussion of Pension and Other Postretirement Benefits [Abstract]	'
Savings Plans, Pension Plans and Other Postretirement Employee Benefits	'
	SAVINGS PLANS, PENSION PLANS AND OTHER POSTRETIREMENT EMPLOYEE BENEFITS
	SAVINGS PLANS
	Substantially all of our employees are eligible to participate in 401(k) savings plans. In 2013, 2012 and 2011, we made matching 401(k) contributions on behalf of employees of $1.8 million, $1.6 million and $1.4 million, respectively. Effective January 1, 2011, we closed our defined benefit pension plans to any new salaried and hourly non-represented entrants. In connection with these closures, additional company 401(k) contributions are made for employees hired after that date.
	PENSION PLANS AND OTHER POSTRETIREMENT BENEFITS
	We also provide benefits under company-sponsored defined benefit retiree health care plans, which cover certain salaried and hourly employees. Most of the retiree health care plans require retiree contributions and contain other cost-sharing features.
	We recognize the underfunded status of our defined benefit pension plans and other postretirement employee benefit obligations on our Consolidated Balance Sheets. We recognize the changes in that funded status, in the year in which changes occur, through our Consolidated Statements of Comprehensive Income.
	We use a December 31 measurement date for our benefit plans and obligations.
	The change in benefit obligation, change in plan assets and funded status for company-sponsored benefit plans and obligations are as follows:
		PENSION PLANS						OTHER POSTRETIREMENT
								EMPLOYEE BENEFITS
	(Dollars in thousands)	2013			2012			2013			2012
	Benefit obligation at beginning of year	$	445,535		$	418,251		$	52,033		$	65,195
	Service cost	5,318			5,238			94			284
	Interest cost	17,826			19,986			1,810			2,478
	Plan amendments	—			510			—			(6,045		)
	Actuarial loss (gain)	(41,178		)	38,329			(2,692		)	(4,878		)
	Benefits paid	(33,936		)	(36,779		)	(3,902		)	(5,001		)
	Benefit obligation at end of year	393,565			445,535			47,343			52,033
	Fair value of plan assets at beginning of year	345,633			312,158			—			—
	Actual return on plan assets	37,157			46,905			—			—
	Employer contributions and benefit payments	1,734			23,349			3,902			5,001
	Benefits paid	(33,936		)	(36,779		)	(3,902		)	(5,001		)
	Fair value of plan assets at end of year	350,588			345,633			—			—
	Amounts recognized in the consolidated balance sheets:
	Current liabilities	$	(1,772	)	$	(1,775	)	$	(4,929	)	$	(5,113	)
	Noncurrent liabilities	(41,205		)	(98,127		)	(42,414		)	(46,920		)
	Funded status	$	(42,977	)	$	(99,902	)	$	(47,343	)	$	(52,033	)
	Changes in actuarial assumptions, primarily the increase in the discount rate, used to calculate our pension liabilities resulted in an increase to the funded status of our pension plans at the end of 2013.
	Our company-sponsored pension plans were underfunded at December 31, 2013 and 2012. In 2012, we borrowed against our company owned life insurance plan, based on the cash surrender value that had accumulated over the years, to make a $21.6 million pension contribution. We contributed $9.3 million to our qualified salaried pension plan, $6.8 million to our qualified hourly plan and $5.5 million to our qualified non-represented pension plan, with $11.9 million being discretionary funding. We were not required to make contributions to our qualified defined benefit plans during 2013.
	The accumulated benefit obligation for all defined benefit pension plans was $387.4 million and $438.6 million at December 31, 2013 and 2012, respectively.
	PENSION ASSETS
	We utilize formal investment policy guidelines for our company-sponsored pension plan assets. These guidelines are periodically reviewed by the board of directors. The board of directors has delegated its authority to management to insure that the investment policy and guidelines are adhered to and the investment objectives are met.
	The general policy states that plan assets will be invested to seek the greatest return consistent with the fiduciary character of the pension funds and to allow the plans to meet the need for timely pension benefit payments. The specific investment guidelines stipulate that management will maintain adequate liquidity for meeting expected benefit payments by reviewing, on a timely basis, contribution and benefit payment levels and appropriately revise long-term and short-term asset allocations. Management takes reasonable and prudent steps to preserve the value of pension fund assets and to avoid the risk of large losses. Major steps taken to provide this protection include the following:
	•Assets are diversified among various asset classes, such as domestic equities, global equities, fixed income, convertible securities and liquid reserves. The long-term asset allocation ranges are as follows:
		Domestic and international equities	15	%	-	60%
		Fixed income securities	35	%	-	60%
		Alternatives	5	%	-	15%
		Cash	0	%	-	5%
	The ranges are more heavily weighted toward equities since the liabilities of the pension plans are long-term in nature and equities historically have significantly outperformed other asset classes over long periods of time. Periodic reviews of allocations within these ranges are made to determine what adjustments should be made based on changing economic and market conditions and specific liquidity requirements.
	•	Assets are managed by professional investment managers and may be invested in separately managed accounts or commingled funds. Assets are diversified by selecting different investment managers for each asset class and by limiting assets under each manager to no more than 25% of the total pension fund.
	•	Assets are not invested in Potlatch stock.
	The investment guidelines also provide that the individual investment managers are expected to achieve a reasonable rate of return over a market cycle. Emphasis will be placed on long-term performance versus short-term market aberrations. Factors to be considered in determining reasonable rates of return include performance achieved by a diverse cross section of other investment managers, performance of commonly used benchmarks (e.g., Russell 3000 Index, Barclays US Long Credit Index, Morgan Stanley Capital International All Country World Index ex US), actuarial assumptions for return on plan investments and specific performance guidelines given to individual investment managers.
	At December 31, 2013, eleven active investment managers managed substantially all of the pension funds, each of whom had responsibility for managing a specific portion of these assets. Plan assets were diversified among the various asset classes within the allocation ranges established by our investment policy.
	The weighted average asset allocations of the pension benefit plans’ assets at December 31 by asset category are as follows:
		PENSION PLANS
	ASSET CATEGORY	2013		2012
	Domestic equity securities	20	%	22	%
	Debt securities	38		36
	Global/international equity securities	27		28
	Other	15		14
	Total	100	%	100	%
	The pension assets are stated at fair value. Refer to Note 13. Financial Instruments and Concentration of Risk for discussion of the framework for measuring fair value.
	Following is a description of the valuation methodologies used for assets measured at fair value:
	•	Corporate common and preferred stocks are valued at quoted market prices reported on the major securities markets, and are classified in Level 1. Investments in registered investment company funds for which market quotations are generally readily available are valued at the last reported sale price, official closing price or publicly available net asset value, or NAV, (or its equivalent) on the primary market or exchange on which they are traded, and are classified in Level 1.
	•	Investments in common and collective trust funds, hedge funds and liquidating trusts that maintain investments in mortgage-backed securities, are generally valued based on their respective NAV (or its equivalent), as a practical expedient to estimate fair value due to the absence of readily available market prices. Investments that may be fully redeemed at NAV in the near-term are generally classified in Level 2.
	•	Investments in funds that may not be fully redeemed at NAV in the near-term are generally classified in Level 3.
	Fair Value Measurements at December 31, 2013:
	(Dollars in thousands)
	ASSET CATEGORY	QUOTED PRICES IN			SIGNIFICANT			SIGNIFICANT			TOTAL
		ACTIVE MARKETS FOR			OBSERVABLE			UNOBSERVABLE
		IDENTICAL ASSETS			INPUTS			INPUTS
		(LEVEL 1)			(LEVEL 2)			(LEVEL 3)
	Cash and equivalents	$	9,673		$	—		$	—		$	9,673
Equity securities:
U.S. large cap1	32,304			—			—			32,304
U.S. small/mid cap2	19,053			—			—			19,053
International companies	34,773			—			—			34,773
Mutual funds3	185,505			—			—			185,505
Collective investments:
Developed markets4	—			17,401			—			17,401
Emerging markets5	—			41,300			—			41,300
Hedge funds6	—			—			10,579			10,579
Total	$	281,308		$	58,701		$	10,579		$	350,588
1	These are managed investments in US large cap equities that track the Russell 1000 Value index.
2	These are managed investments in US small/mid cap equities that track the Russell 2500 Growth index.
3	The mutual funds were 50% invested in high-quality intermediate and long-term investment grade securities and 50% invested in a diversified portfolio of fixed-income instruments of varying maturities, which may be represented by forwards or derivatives such as options, futures contracts or swap agreements and debt securities.
4	These collective investments are invested in equity funds of developed markets outside of the US & Canada, that track the MSCI EAFE index.
5	These collective investments are invested in equity funds of emerging markets outside of the US & Canada, that track the MSCI Emerging Markets index.
6	The hedge funds are 37% invested in long/short and event-driven equity, 24% invested in long and short credit, 11% in relative value, 10% invested in distressed debt, 6% invested in convertible bond hedging, with the remaining 12% in other investments.
Fair Value Measurements at December 31, 2012:
(Dollars in thousands)
ASSET CATEGORY	QUOTED PRICES IN			SIGNIFICANT			SIGNIFICANT			TOTAL
	ACTIVE MARKETS FOR			OBSERVABLE			UNOBSERVABLE
	IDENTICAL ASSETS			INPUTS			INPUTS
	(LEVEL 1)			(LEVEL 2)			(LEVEL 3)
Cash and equivalents	$	2,085		$	—		$	—		$	2,085
Equity securities:
U.S. large cap1	35,099			—			—			35,099
U.S. small/mid cap2	21,516			—			—			21,516
International companies	9,400			—			—			9,400
Mutual funds3	124,453			—			—			124,453
Collective investments:
U.S. small/mid cap4	—			19,803			—			19,803
Developed markets5	—			47,916			—			47,916
Emerging markets6	—			40,983			—			40,983
Hedge funds7	—			—			45,693			45,693
Securities pledged to creditors:
Money market8	—			1,499			—			1,499
Mortgage-backed securities9	—			1,992			—			1,992
Subtotal	192,553			112,193			45,693			350,439
Payable held under securities lending agreements10	(4,806		)	—			—			(4,806		)
Total	$	187,747		$	112,193		$	45,693		$	345,633
1	These are managed investments in US large cap equities that track the Russell 1000 Value index.
2	These are managed investments in US small/mid cap equities that track the Russell 2500 Growth index.
3	The mutual funds were 50% invested in high-quality intermediate and long-term investment grade securities and 50% invested in a diversified portfolio of fixed-income instruments of varying maturities, which may be represented by forwards or derivatives such as options, futures contracts or swap agreements and debt securities.
4	These are managed investments in US small/mid cap equities that track the Russell 2500 Value index.
5	These collective investments are invested in equity funds of developed markets outside of the US & Canada, that track the MSCI EAFE index.
6	These collective investments are invested in equity funds of emerging markets outside of the US & Canada, that track the MSCI Emerging Markets index.
7	The hedge funds are 53% invested in long/short and event-driven equity, 11% invested in long and short credit, 14% in relative value, 5% invested in fixed income relative value, 4% invested in distressed debt, with the remaining 13% in other investments.
8	The money market holdings are invested in the Mount Vernon Securities Lending Trust Prime Portfolio.
9	The mortgage-backed securities are maintained in the U.S. Bank Illiquid Securities Liquidating Trust.
10	This category represents a payable under the securities lending agreements.
The following table sets forth a summary of changes in the fair value of the plans’ Level 3 assets for the years ended December 31:
	Hedge Funds
(Dollars in thousands)	2013			2012
Balance, beginning of year	$	45,693		$	42,940
Sales and settlements	(34,500		)	—
Unrealized gains (losses) relating to assets still held at the reporting date	(614		)	2,753
Balance, end of year	$	10,579		$	45,693
PLAN ACTIVITY
Pre-tax components of net periodic cost (benefit) recognized in our Consolidated Statements of Income were as follows:
	PENSION PLANS									OTHER POSTRETIREMENT
										EMPLOYEE BENEFITS
(Dollars in thousands)	2013			2012			2011			2013			2012			2011
Service cost	$	5,318		$	5,238		$	4,456		$	94		$	284		$	446
Interest cost	17,826			19,986			21,325			1,810			2,478			3,486
Expected return on plan assets	(26,092		)	(28,755		)	(31,804		)	—			—			—
Curtailment credit	—			—			—			—			(103		)	—
Amortization of prior service cost (credit)	779			770			684			(9,708		)	(9,343		)	(8,536		)
Amortization of actuarial loss	19,929			15,356			9,916			3,209			3,127			3,967
Net periodic cost (benefit)	$	17,760		$	12,595		$	4,577		$	(4,595	)	$	(3,557	)	$	(637	)
Other amounts recognized in our Consolidated Statements of Comprehensive Income were as follows:
	PENSION PLANS									OTHER POSTRETIREMENT
										EMPLOYEE BENEFITS
(Dollars in thousands)	2013			2012			2011			2013			2012			2011
Net amount at beginning of year	$	161,667		$	158,883		$	130,445		$	(20,769	)	$	(18,001	)	$	(16,690	)
Amounts arising during the period:
Net loss (gain)	(52,242		)	20,180			57,220			(2,692		)	(4,878		)	(913		)
Prior service cost (credit)	—			510			—			—			(5,942		)	(5,805		)
Taxes	20,374			(8,069		)	(22,316		)	1,050			4,260			2,620
Net amount arising during the period	(31,868		)	12,621			34,904			(1,642		)	(6,560		)	(4,098		)
Amounts reclassified during the period:
Amortization of prior service (cost) credit	(779		)	(770		)	(684		)	9,708			9,343			8,536
Amortization of actuarial loss	(19,929		)	(15,356		)	(9,916		)	(3,209		)	(3,127		)	(3,967		)
Taxes	8,076			6,289			4,134			(2,535		)	(2,424		)	(1,782		)
Net reclassifications during the period	(12,632		)	(9,837		)	(6,466		)	3,964			3,792			2,787
Net amount at end of year	$	117,167		$	161,667		$	158,883		$	(18,447	)	$	(20,769	)	$	(18,001	)
Amounts recognized in accumulated other comprehensive loss on our Consolidated Balance Sheets, net of tax, consist of:
	PENSION PLANS						OTHER POSTRETIREMENT
							EMPLOYEE BENEFITS
(Dollars in thousands)	2013			2012			2013			2012
Net loss	$	115,404		$	159,429		$	16,490		$	20,090
Prior service cost (credit)	1,763			2,238			(34,937		)	(40,859		)
Net amount recognized	$	117,167		$	161,667		$	(18,447	)	$	(20,769	)
The estimated net loss and prior service cost for the defined benefit pension plans that will be amortized from accumulated other comprehensive loss into net periodic benefit cost over the next fiscal year are $14.5 million and $0.7 million, respectively. The estimated net loss and prior service credit for OPEB obligations that will be amortized from accumulated other comprehensive loss into net periodic benefit over the next fiscal year are $2.7 million and $9.6 million, respectively.
EXPECTED FUNDING AND BENEFIT PAYMENTS
We are required to make a minimum contribution of approximately $1.7 million to our qualified pension plan in 2014. Our non-qualified pension plan is unfunded and benefit payments are paid from our general assets. We estimate approximately $1.8 million in supplemental pension plan payments in 2014.
Our other postretirement employee benefit plans are unfunded and benefit payments are paid from our general assets they come due. Estimated future benefit payments represent benefit costs incurred during the year by eligible participants.
Estimated future benefit payments, which reflect expected future service are as follows for the years indicated:
(Dollars in thousands)	PENSION PLANS			OTHER POSTRETIREMENT
				EMPLOYEE BENEFITS
2014	$	30,033		$	4,929
2015		29,836			4,835
2016		29,566			4,699
2017		29,287			4,490
2018		29,064			4,248
2019 – 2022		143,152			17,734
ACTUARIAL ASSUMPTIONS
The weighted average assumptions used to determine the benefit obligation as of December 31 were:
	PENSION PLANS						OTHER POSTRETIREMENT
							EMPLOYEE BENEFITS
	2013		2012		2011		2013		2012		2011
Discount rate	5.1	%	4.15	%	4.95	%	4.45	%	3.7	%	4.85	%
Rate of salaried compensation increase	3	%	3.5	%	3.5	%	—		—		—
The weighted average assumptions used to determine the net periodic benefit (cost) for the years ended December 31 were:
	PENSION PLANS						OTHER POSTRETIREMENT
							EMPLOYEE BENEFITS
	2013		2012		2011		2013		2012		2011
Discount rate	4.15	%	4.95	%	5.65	%	3.7	%	4.85	%	5.4	%
Expected return on plan assets	8	%	8	%	8.5	%	—		—		—
Rate of salaried compensation increase	3.5	%	3.5	%	4	%	—		—		—
The discount rate used in the determination of pension and other postretirement employee benefit obligations in 2013 and 2012 was calculated using hypothetical bond portfolios consisting of “AA” or better rated securities that match the expected monthly benefit payments under our pension plans and other postretirement employee benefit obligations. The portfolios were well-diversified over corporate industrial, corporate financial, municipal, federal and foreign government issuers.
The expected return on plan assets assumption is based upon an analysis of historical long-term returns for various investment categories, as measured by appropriate indices. These indices are weighted based upon the extent to which plan assets are invested in the particular categories in arriving at our determination of a composite expected return. The expected rate of return assumption that will be used to determine net periodic cost for 2014 is 7.5%.
The assumed health care cost trend rate used to calculate other postretirement employee benefit obligations as of December 31, 2013 was 7.7% for a certain group of participants under age 65 in our hourly plan and our Arkansas participants covered by a collective bargaining agreement, grading ratably to an assumption of 5.0% in 2083. The level of subsidy is frozen for our salaried and non-represented plans and a certain group of participants over age 65 in our hourly plan, so that all future increments in health care costs are borne by the retirees.
A one percentage point change in the health care cost trend rates would have the following effects on our December 31, 2013 Consolidated Financial Statements:
(Dollars in thousands)	1% INCREASE			1% DECREASE
Effect on total service and interest cost components	$	33		$	(29	)
Effect on accumulated postretirement benefit obligation	519			(475		)

Commitments_and_Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2013
Commitments and Contingencies Disclosure [Abstract]	'
Commitments and Contingencies	'
	COMMITMENTS AND CONTINGENCIES
	We have operating leases covering office space, equipment, land and vehicles expiring at various dates through 2028. As leases expire, it can be expected that, in the normal course of business, certain leases will be renewed or replaced.
	As of December 31, 2013, the future minimum rental payments required under our operating leases are as follows:
	(Dollars in thousands)
	2014	$	3,335
	2015	3,012
	2016	2,016
	2017	1,052
	2018	439
	2019 and thereafter	131
	Total	$	9,985
	Operating lease expense was $3.6 million, $3.1 million and $2.4 million for the years ended December 31, 2013, 2012 and 2011, respectively.
	In January 2007, the Environmental Protection Agency (EPA) notified us that we are a potentially responsible party under the Comprehensive Environmental Response, Compensation and Liability Act of 1980 (CERCLA) and the Clean Water Act for cleanup of a site known as Avery Landing in northern Idaho. We own a portion of the land at the Avery Landing site, which we acquired in 1980 from the Milwaukee Railroad. The land we own at the site and adjacent properties were contaminated with petroleum as a result of the Milwaukee Railroad's operations at the site prior to 1980. We entered into a consent order with the EPA in August 2008 to conduct an Engineering Evaluation/Cost Analysis (EE/CA) study to determine the best means of addressing the contamination at the site. In January 2010, we submitted our draft EE/CA report to the EPA outlining various alternatives for addressing the contamination at the entire site. Ultimately, the EPA published a draft EE/CA report on January 26, 2011 for public comment. The public comment period closed March 11, 2011, and on July 5, 2011, the EPA issued an Action Memorandum for the Avery Landing Site selecting contaminant extraction and off-site disposal as the remedial alternative. On May 23, 2012, we signed a consent order with the EPA pursuant to which we agreed to provide $1.75 million in funding for EPA cleanup on a portion of our property (including the adjacent riverbank owned by the Idaho Department of Lands). On April 4, 2013, the EPA issued a unilateral administrative order requiring us to remediate the portion of the Avery Landing site that we own. During the first quarter of 2013, we increased our accrual by $0.75 million. We began work on the site in May 2013 and discovered more contaminant on our property than had been expected based upon previous testing, and accordingly, during the second quarter of 2013 we increased our expense by an additional $1.75 million. During the third quarter of 2013, we increased our accrual by approximately $1.0 million to reflect the final work completed on the site in September 2013. On January 23, 2014, the EPA project manager informed us that he approved our Final Completion Report dated January 17, 2014 and our Final Natural Attenuation Performance Monitoring Plan dated January 17, 2014, and we have no further obligations with regard to our property other than fulfillment of the Monitoring Plan.
	The following table details our Avery Landing environmental remediation charge and reserve balance for the years ended December 31:
	(Dollars in thousands)	2013			2012
	Beginning reserve balance	$	4,250		$	6,000
	Environmental remediation charge	3,522			—
	Cash payments	(7,772		)	(1,750		)
	Ending reserve balance	$	—		$	4,250
	Negotiations with the EPA continue regarding a final settlement and release of EPA claims against us regarding the site, and we cannot predict at this time what additional costs, if any, that we may incur on this matter. We have reserved all of our rights to seek reimbursement for the costs of remediation from all parties potentially responsible.
	We believe there is no pending or threatened litigation that would have a material adverse effect on our financial position, operations or liquidity.

EquityBased_Compensation_Plans

Equity-Based Compensation Plans	12 Months Ended
	Dec. 31, 2013
Share-based Compensation [Abstract]	'
Equity-Based Compensation Plans	'
	EQUITY-BASED COMPENSATION PLANS
	At December 31, 2013, we had three stock incentive plans under which performance shares, restricted stock units, or RSUs and stock options were outstanding. All of these plans have received shareholder approval. We were originally authorized to issue up to 1.7 million shares, 1.4 million shares and 1.6 million shares under our 1995 Stock Incentive Plan, 2000 Stock Incentive Plan and 2005 Stock Incentive Plan, respectively. At December 31, 2013, no shares were available for future use under the 1995 and 2000 Stock Incentive Plans, while approximately 269,000 shares were authorized for future use under the 2005 Stock Incentive Plan. We issue new shares of common stock to settle stock option exercises and performance share and RSU awards.
	Our outside directors are granted an annual award of common stock units that are credited to an account established on behalf of each director. These accounts are then credited with additional common stock units equal in value to the distributions that are paid on the same amount of common stock. Upon separation from service as a director, the common stock units held by the director in his or her stock unit account will be converted to cash based upon the then market price of the common stock and paid to the director.
	Our outside directors and certain employees can elect to defer compensation in the form of common stock units. We record compensation expense or income during each reporting period based on the amount of compensation deferred during the period and the increase or decrease in the value of our common stock.
	The following table details our compensation expense and the related income tax benefit as of December 31:
	(Dollars in thousands)	2013			2012			2011
	Employee equity-based compensation expense:
	Performance shares	$	3,635		$	3,440		$	3,821
	Restricted stock units	742			627			583
	Total employee equity-based compensation expense	$	4,377		$	4,067		$	4,404
	Director deferred compensation expense	$	1,265		$	2,008		$	619
	Actual tax benefit realized for tax deductions from equity-based plans	$	71		$	525		$	—
	PERFORMANCE SHARES
	Performance share awards granted under the stock incentive plans have a three-year performance period and shares are issued at the end of the period if the performance measure is met. The performance measure is based on the percentile ranking of our total shareholder return relative to the total shareholder return performance of both a selected peer group of companies and a larger group of indexed companies over the three-year performance period. The number of shares actually issued, as a percentage of the amount subject to the performance share award, could range from 0% to 200%. Performance share awards granted under our stock incentive plans do not have voting rights unless and until shares are issued upon settlement. If shares are issued at the end of the three-year performance measurement period, the recipients will receive distribution equivalents in the form of additional shares at the time of payment equal to the distributions that would have been paid on the shares earned had the recipients owned the shares during the three-year period. Therefore, the shares are not considered participating securities.
	A Monte Carlo simulation method is used to estimate the stock prices of Potlatch and the selected peer companies at the end of the three-year performance period. The expected volatility of each company’s stock price and covariance of returns among the peer companies are key assumptions within the Monte Carlo simulation. Historical volatility over a term similar to the performance period is considered a reasonable proxy for forecasted volatility. Likewise, because the returns of Potlatch and the peer group companies are correlated, the covariance, a measure of how two variables tend to move together, is calculated over a historical term similar to the performance period and applied in the simulations. The simulations use the stock prices of Potlatch and the peer group of companies as of the award date as a starting point. Multiple simulations are generated, resulting in share prices and total shareholder return values for Potlatch and the peer group of companies. For each simulation, the total shareholder return of Potlatch is ranked against that of the peer group of companies. The future value of the performance share unit is calculated based on a multiplier for the percentile ranking and then discounted to present value. The discount rate is the risk-free rate as of the award date for a term consistent with the performance period. Awards are also credited with dividend equivalents at the end of the performance period, and as a result, award values are not adjusted for dividends.
	The following table presents the key inputs used in calculating the fair value of the performance share awards in 2013, 2012 and 2011, and the resulting fair values:
		2013			2012			2011
	Shares granted	83,111			85,028			77,767
	Stock price as of valuation date	$	45.31		$	31.11		$	39.1
	Risk-free rate	0.4		%	0.4		%	1.26		%
	Fair value of a performance share	$	62.78		$	34.24		$	55.84
	The following table summarizes outstanding performance share awards as of December 31, 2013, 2012 and 2011, and changes during those years:
	(Dollars in thousands, except	2013						2012					2011
	per-share amounts)	SHARES			WEIGHTED AVG.			SHARES			WEIGHTED AVG.		SHARES			WEIGHTED AVG.
					GRANT DATE						GRANT DATE					GRANT DATE
					FAIR VALUE						FAIR VALUE					FAIR VALUE
	Unvested shares outstanding at January 1	160,214			$	44.5		154,594			$	50.54	184,601			$	38.45
	Granted	83,111			62.78			85,028			34.24		77,767			55.84
	Vested	(71,861		)	55.84			(76,812		)	45.3		(103,960		)	33.32
	Forfeited	(15,650		)	47.32			(2,596		)	44.99		(3,814		)	42.77
	Unvested shares outstanding at December 31	155,814			48.73			160,214			44.5		154,594			50.54
	Total grant date fair value of share awards vested during the year	$	4,013					$	3,480				$	3,464
	Aggregate intrinsic value of unvested share awards at December 31	$	6,504					$	6,019				$	4,747
	As of December 31, 2013, there was $4.2 million of unrecognized compensation cost related to unvested performance share awards, which is expected to be recognized over a weighted average period of 1.5 years.
	RESTRICTED STOCK UNITS
	Our 2005 Stock Incentive Plan also allows for awards to be issued in the form of RSU grants. During 2013, 2012 and 2011, certain officers and other select employees of the company were granted RSU awards that will accrue distribution equivalents based on distributions paid during the RSU vesting period. The distribution equivalents will be converted into additional RSUs that will vest in the same manner as the underlying RSUs to which they relate. Therefore, the shares are not considered participating securities. The terms of the awards state that the RSUs will vest in a given time period of one to three years, and the terms of certain awards follow a vesting schedule within the given time period.
	A summary of the status of outstanding RSU awards as of December 31, 2013, 2012 and 2011, and changes during these years is presented below:
		2013						2012					2011
		SHARES			WEIGHTED AVERAGE GRANT DATE			SHARES			WEIGHTED AVERAGE GRANT DATE		SHARES			WEIGHTED AVERAGE GRANT DATE
					FAIR VALUE						FAIR VALUE					FAIR VALUE
	Unvested shares outstanding at January 1	40,219			$	34.82		36,359			$	35.6	41,715			$	29.37
	Granted	23,449			44.41			20,225			31.53		18,053			38.57
	Vested	(19,796		)	38.19			(14,861		)	32.41		(21,510		)	26.26
	Forfeited	(6,411		)	36.91			(1,504		)	33.36		(1,899		)	32.78
	Unvested shares outstanding at December 31	37,461			38.69			40,219			34.82		36,359			35.6
	Total grant date fair value of RSU awards vested during the year (in thousands)	$	756					$	482				$	565
	Aggregate intrinsic value of unvested RSU awards at December 31 (in thousands)	$	2,511					$	1,575				$	1,131
	As of December 31, 2013, there was $0.8 million of total unrecognized compensation cost related to outstanding RSU awards, which is expected to be recognized over a weighted average period of 1.0 years.
	STOCK OPTIONS
	All outstanding stock options were granted with an exercise price equal to the market price on the date of grant, were fully exercisable after two years and expire not later than 10 years from the date of grant. No new stock options were granted in 2013, 2012 or 2011.
	A summary of the status of outstanding stock options as of December 31, 2013, 2012 and 2011 and changes during those years is presented below:
		2013						2012					2011
		SHARES			WEIGHTED AVG.			SHARES			WEIGHTED AVG.		SHARES			WEIGHTED AVG.
					EXERCISE PRICE						EXERCISE PRICE					EXERCISE PRICE
	Outstanding at January 1	83,827			$	27.46		144,684			$	23.34	222,130			$	21.64
	Shares exercised	(70,968		)	26.25			(60,857		)	17.66		(77,446		)	18.47
	Outstanding and exercisable at December 31	12,859			30.92			83,827			27.46		144,684			23.34
	Total intrinsic value of options exercised during the year (in thousands)	$	1,423					$	938				$	1,496
	There were no unvested stock options outstanding during 2013, 2012 or 2011.
	The following table summarizes information about stock options outstanding at December 31, 2013:
		OPTIONS OUTSTANDING AND EXERCISABLE
	EXERCISE PRICE	NUMBER		WEIGHTED AVERAGE REMAINING		WEIGHTED AVERAGE OPTION PRICE			AGGREGATE
		OUTSTANDING		CONTRACTUAL LIFE					INTRINSIC VALUE
AT 12/31/12				(IN THOUSANDS)
$30.92	12,859		0.92 years		$	30.92		$	139
Cash received from stock option exercises for the years ended December 31, 2013, 2012 and 2011 was $1.9 million, $1.1 million and $1.4 million, respectively.

Segment_Information

Segment Information	12 Months Ended
	Dec. 31, 2013
Segment Reporting Information, Additional Information [Abstract]	'
Segment Information	'
	As of December 31, 2013, our businesses are organized into three reportable operating segments: Resource, Wood Products and Real Estate. The Resource segment manages our timberlands to optimize revenue producing opportunities while adhering to our strict stewardship standards. Management activities include planting and harvesting trees and building and maintaining roads. The Resource segment also generates revenues from non-timber resources such as hunting leases, recreation permits and leases, mineral rights leases, biomass
	production, carbon sequestration and other leasing opportunities. The Wood Products segment manufactures and markets lumber and plywood. The business of our Real Estate segment consists primarily of the sale of land holdings deemed non-strategic or identified as having higher and better use alternatives. The Real Estate segment engages in real estate subdivision and development activities through Potlatch TRS.
	The reporting segments follow the same accounting policies used for our Consolidated Financial Statements, as described in the summary of principal accounting policies, with the exception of the valuation of inventories. All segment inventories are reported using the average cost method, while the LIFO reserve is recorded at the corporate level. Management evaluates a segment’s performance based upon profit or loss from operations before income taxes. Intersegment revenues are recorded based on prevailing market prices.
	The following table presents business segment information for each of the past three years. Corporate information is included to reconcile segment data to the Consolidated Financial Statements.
	(Dollars in thousands)	2013			2012			2011
	Revenues:
	Resource	$	238,228		$	207,846		$	226,969
	Wood Products	366,015			329,404			271,580
	Real Estate	26,160			38,238			50,029
		630,403			575,488			548,578
	Elimination of intersegment revenues - Resource1	(60,114		)	(50,354		)	(51,157		)
	Total consolidated revenues	$	570,289		$	525,134		$	497,421
	Operating Income:
	Resource	$	73,425		$	49,543		$	59,792
	Wood Products	58,892			45,456			7,267
	Real Estate	18,266			28,056			31,384
	Eliminations and adjustments	(907		)	(1,061		)	2,410
		149,676			121,994			100,853
	Corporate	(65,210		)	(62,591		)	(56,442		)
	Income before income taxes	$	84,466		$	59,403		$	44,411
	Depreciation, depletion and amortization:
	Resource	$	18,103		$	16,446		$	17,420
	Wood Products	6,194			6,538			7,829
	Real Estate	56			36			28
		24,353			23,020			25,277
	Corporate	2,609			3,227			3,815
	Total depreciation, depletion and amortization	$	26,962		$	26,247		$	29,092
	Basis of real estate sold:
	Real Estate	$	3,536		$	5,413		$	13,500
	Elimination and adjustments	(632		)	(365		)	(3,281		)
	Total basis of real estate sold	$	2,904		$	5,048		$	10,219
	Assets:
	Resource and Real Estate2	$	476,628		$	477,271		$	476,483
	Wood Products	115,664			100,190			102,957
		592,292			577,461			579,440
	Corporate	88,238			141,436			166,780
	Total consolidated assets	$	680,530		$	718,897		$	746,220
	Capital Expenditures:
	Resource and Real Estate2	$	13,509		$	23,916		$	12,003
	Wood Products	9,013			4,427			4,050
		22,522			28,343			16,053
	Corporate	1,131			845			833
	Total capital expenditures	$	23,653		$	29,188		$	16,886
	1	Intersegment revenues for 2011-2013, which were based on prevailing market prices, consisted of logs sold by our Resource segment to the Wood Products segment.
	2	Assets are shown on a combined basis for the Resource and Real Estate segments, as we do not produce information separately for those segments for internal purposes.
	All of our wood products facilities and all other assets are located within the continental United States. We sell and ship products to Canada and Mexico. Geographic information regarding our revenues is summarized as follows:
	(Dollars in thousands)	2013			2012			2011
	United States	$	558,138		$	516,466		$	490,409
	Canada	9,645			5,180			4,646
	Mexico	2,506			3,488			2,366
	Total consolidated revenues	$	570,289		$	525,134		$	497,421

Asset_Impairment_Charge

Asset Impairment Charge	12 Months Ended
	Dec. 31, 2013
Asset Impairment Charges [Abstract]	'
Asset Impairment Charges	'
	ASSET IMPAIRMENT CHARGES
	In 2012, we recorded a pre-tax asset impairment charge of $0.1 million related to write-downs of two of our real estate development projects. In 2011, we recorded a pre-tax asset impairment charge of $1.2 million as a result of a change in the intended use of a warehouse. Both charges are reflected in the operating results of our Real Estate segment and included in costs and expenses in our Consolidated Statements of Income.

Financial_Results_by_Quarter

Financial Results by Quarter	12 Months Ended
	Dec. 31, 2013
Quarterly Financial Data [Abstract]	'
Financial Results by Quarter	'
	FINANCIAL RESULTS BY QUARTER (UNAUDITED)
		THREE MONTHS ENDED
	(Dollars in thousands, except per-share amounts)	MARCH 31				JUNE 30				SEPTEMBER 30				DECEMBER 31
		2013		2012		2013		2012		2013		2012		2013		2012
	Revenues	$	139,253	$	112,384	$	133,212	$	117,540	$	157,869	$	151,911	$	139,955	$	143,299
	Operating income	26,608		12,519		29,441		17,090		30,904		28,763		20,645		26,570
	Net income	15,487		5,051		19,182		5,080		22,191		18,599		13,721		13,864
	Net income per share1
	Basic	$	0.38	$	0.13	$	0.47	$	0.13	$	0.55	$	0.46	$	0.34	$	0.34
	Diluted	0.38		0.13		0.47		0.13		0.54		0.46		0.34		0.34
	1	Per-share amounts are computed independently for each of the quarters presented. Therefore, the sum of the quarterly per-share amounts may not equal the total computed for the year.

Summary_of_Principal_Accountin1

Summary of Principal Accounting Policies Summary of Principal Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2013
Accounting Policies [Abstract]	'
Consolidation	'
	CONSOLIDATION
	The Consolidated Financial Statements include the accounts of Potlatch Corporation and its subsidiaries after elimination of significant intercompany transactions and accounts. There are no significant unconsolidated subsidiaries.
	We are primarily engaged in activities associated with timberland management, including the sale of timber, the management of approximately 1.4 million acres of timberlands and the purchase and sale of timberlands. We are also engaged in the manufacture and sale of wood products. Our timberlands and all of our wood products facilities are located within the continental United States. The primary market for our products is the United States. As discussed in Note 2: REIT Conversion, we converted to a Real Estate Investment Trust, or REIT, effective January 1, 2006.
Significant Estimates	'
	SIGNIFICANT ESTIMATES
	The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America, which we refer to in this report as U.S. 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 revenues and expenses during the reporting period. Actual results could differ from those estimates and assumptions.
	Significant estimates are described in further detail in this section and the following Notes to Consolidated Financial Statements. Significant estimates include timber volumes, pension and postretirement obligation assumptions, environmental liabilities, fair value of derivative instruments and assumptions utilized for asset and disposal group impairment tests
Equity-Based Compensation	'
	EQUITY-BASED COMPENSATION
	Equity-based awards are measured at fair value on the dates they are granted or modified. These measurements establish the cost of the equity-based awards for accounting purposes. The cost of the equity-based award is then recognized in the Consolidated Statements of Income over each employee’s required service period. See Note 16: Equity-Based Compensation Plans for more information about our equity-based compensation.
Inventories	'
	INVENTORIES
	Inventories are stated at the lower of cost or market. The last-in, first-out method is used to determine cost of logs, lumber and plywood for most of our operations. The average cost method is used to determine cost of all other inventories. Expenses associated with idle capacity or other curtailments of production are reflected in cost of goods sold in the periods incurred.
Property, Plant and Equipment	'
	PROPERTY, PLANT AND EQUIPMENT
	Property, plant and equipment are valued at cost less accumulated depreciation. Depreciation of buildings, equipment and other depreciable assets is determined using the straight-line method of depreciation. Estimated useful lives range from 30 to 40 years for buildings and structures and 2 to 25 years for equipment.
	Major improvements and replacements of property are capitalized. Maintenance, repairs, and minor improvements and replacements are expensed. Upon retirement or other disposition of property, applicable cost and accumulated depreciation or amortization are removed from the accounts. Any gains or losses are included in earnings.
Timber and Timberland	'
	TIMBER AND TIMBERLANDS
	Timber and timberlands are valued at cost less accumulated depletion and amortization. For fee timber, the capitalized cost includes costs related to stand establishment, such as site preparation, including all costs of preparing the land for planting, cost of seeds or seedlings, tree planting, including labor, materials, depreciation of company-owned equipment and the cost of contract services. Upon completion of planting activities and field inspection to assure the planting operation was successful, a plantation will be considered “established.” Subsequent expenditures made to maintain the integrity or enhance the growth of an established plantation or stand are expensed. Post-establishment expenses include release spray treatments, pest control activities, thinning operations, fertilization and replanting seedlings lost through mortality. Expenditures for forest management consist of regularly recurring items necessary for ownership and administration of timber producing property such as fire protection, property taxes and insurance, silviculture costs incurred subsequent to stand establishment, cruising (physical inventory), property maintenance and salaries, supplies, travel, record-keeping and other normal recurring administrative personnel costs. These expenditures are accounted for as current operating expenses. Timberland purchased on the open market is capitalized and the cost is allocated to the relative values of the component items as appraised, such as timberland, merchantable sawlogs, merchantable pulpwood, reproduction (young growth not merchantable), logging roads and other land improvements. The capitalized cost includes purchase price, title search and title recording, transfer taxes and fees, timber cruises, appraisals and running of boundary lines.
	The aggregate estimated volume of current standing timber inventory is updated at least annually to reflect increases in merchantable timber due to reclassification of young growth to merchantable timber, the annual growth rates of merchantable timber and the acquisition of additional merchantable timber, and to reflect decreases due to timber harvests and land sales. Timber volumes are estimated from cruises of the timber tracts, which are completed on our timberlands on approximately a five to ten year cycle. Since the individual cruises collect field data at different times for specific sites, the growth model projects standing inventory from the cruise date to a common reporting date. Annual growth rates for the merchantable inventory have historically been in the range of 2%-5%.
	Reproduction accounts are reviewed annually, and dollars are transferred from reproduction accounts to merchantable timber accounts on a reasonable and consistent basis. Volumes and the related accumulated costs are tracked and, as the timber is harvested, the cost is amortized to depletion.
	Depletion represents the amount charged to expense for logs cut from fee timber. Generally, rates at which timber is depleted are calculated annually for each of our Resource regions by dividing the beginning of year balance of the timber accounts by the forest inventory volume, after inventory updates for growth projection adjustments and new timber cruises.
	The base cost of logging roads, such as the clearing, grading, and ditching, is not amortized and remains a capitalized item until obliteration or other disposition, while other portions of the initial cost, such as bridges, culverts and gravel surfacing are amortized over their useful lives, which range from 5 to 20 years. Costs associated with temporary logging roads that will not become part of our road system are expensed as incurred.
Real Estate Sales	'
	REAL ESTATE SALES
	Sales of non-core timberland are considered to be part of our normal operations. We therefore classify revenue and costs associated with real estate sold in revenues and cost of goods sold, respectively, in our Consolidated Statements of Income. Cash generated from real estate sales is included as an operating activity in our Consolidated Statements of Cash Flows, and is adjusted for the basis of real estate sold.
Like-Kind Exchange and Restricted Cash	'
	LIKE-KIND EXCHANGES AND RESTRICTED CASH
	In order to acquire and sell assets, primarily timberlands, in a tax efficient manner, we sometimes enter into like-kind exchange (LKE) tax-deferred transactions. There are two main types of LKE transactions: forward transactions, in which property is sold and the proceeds are reinvested by acquiring similar property; and reverse
	transactions, in which property is acquired and similar property is subsequently sold by us. Both forward and reverse transactions must be completed within prescribed time periods under Internal Revenue Code section 1031.
	We use a qualified intermediary to facilitate LKE transactions. Proceeds from forward transactions are held by the intermediary and are classified as restricted cash, within non-current other assets, because the funds must be reinvested in similar properties. If the acquisition of suitable LKE properties is not completed within 180 days of the sale of the company-owned property, the proceeds are distributed to us by the intermediary and are reclassified as available cash and applicable income taxes are determined. In the case of reverse transactions in which we have not yet completed LKE sales of company-owned land to match with property purchased on our behalf by the intermediary, the amount associated with the property purchased on our behalf but not yet matched with LKE sales is classified as a non-current asset and included in “Timber and timberlands, net” in our Consolidated Balance Sheets and as “Additions to timber and timberlands” in the investing activities section of our Consolidated Statements of Cash Flows.
Long-Lived Assets	'
	LONG-LIVED ASSETS
	Our long-lived assets are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable, as measured by its undiscounted estimated future cash flows. We use our operational budgets to estimate future cash flows. Budget estimates are adjusted periodically to reflect changing business conditions, and operations are reviewed, as appropriate, for impairment using the most current data available. In certain circumstances we may also use fair market value to determine the carrying value of certain assets. Assets to be disposed of are reported at the lower of carrying amount or fair value less cost to sell.
	We recognize a liability and an asset equal to the fair value of our legal obligations to perform asset retirement activities if the amount can be reasonably estimated. Our primary obligations relate to asbestos located within our manufacturing facilities and a landfill site. We have recorded assets and corresponding liabilities that are not material to our financial position or results of operations. We have also identified situations that would have resulted in the recognition of additional asset retirement obligations, except for an inability to reasonably estimate the fair value of the liability. Most of these situations relate to asbestos located within our manufacturing facilities where a settlement date or range of settlement dates cannot be specified. We review these obligations annually and do not expect them to have a material effect on our financial position, results of operations or cash flows.
Income Taxes	'
	INCOME TAXES
	We use the asset and liability method of accounting for income taxes. Under this method, deferred tax assets and liabilities are recognized for the estimated future tax consequences attributable to differences between the financial statement carrying amounts of assets and liabilities and their respective tax bases, operating loss carryforwards and tax credit carryforwards. Deferred tax assets and liabilities are measured pursuant to tax laws using rates expected to apply to taxable income in the years in which the temporary differences are expected to be recovered or settled. We recognize the effect of a change in income tax rates on deferred tax assets and liabilities in the Consolidated Statements of Income and Consolidated Statements of Comprehensive Income in the period that includes the enactment date of the rate change. We record a valuation allowance to reduce the carrying amounts of deferred tax assets if it is more likely than not that such deferred tax assets will not be realized.
Revenue Recognition	'
	REVENUE RECOGNITION
	We recognize revenue from the sale of timber when legal ownership and the risk of loss transfers to the buyer and the quantity sold is determinable. The company sells timber under delivered log agreements as well as through sales of standing timber, or stumpage. For delivered sales, revenue, which includes amounts billed for shipping and handling (logging and hauling of timber), is recognized when the log is delivered to the customer. Stumpage is sold using pay-as-cut, timber deed or lump-sum sale agreements. Under a pay-as-cut sales contract, the purchaser acquires the right to harvest specified timber on a tract, at an agreed upon price per unit. The sale and any related advances are recognized as revenue as the purchaser harvests the timber on the tract. Under a timber deed sale, the buyer agrees to purchase and harvest specified timber on a tract of land over the term of the contract, the risk of loss and title to the trees transfer to the buyer when the contract is signed and the buyer pays the full purchase price when the contract is signed. Revenue from a timber deed sale is recognized when the contract is signed. Under a lump-sum sale, the parties agree to a purchase price for all the timber available for harvest on a tract of land. Generally the purchase price is paid when the contract is signed. Title to the timber and risk of loss transfers to the buyer as the timber is harvested. Therefore, revenue under a lump-sum sale is recognized over the term of the contract based on the timber harvested compared to the total estimated timber available to be harvested. An adjustment may be required to the extent the actual timber harvested is different than the estimate of timber available.
	Substantially all of our real estate sales are considered cash sales, as we receive the entire consideration in cash at closing. Also at closing, all risks and rewards of ownership are transferred to the buyer, and we do not have a substantial continuing involvement in any of our properties after sales are consummated. We recognize revenue under the full accrual method for cash sales of real estate when the sale is consummated (i.e., at closing). Sales of properties that qualify for LKE tax-deferred treatment involve a third party intermediary that receives proceeds related to the property sold and holds the proceeds for reinvestment in like kind property. The proceeds are recorded as revenue when the third party intermediary receives them.
	We recognize revenue from the sale of manufactured wood products and residual by-products when there is persuasive evidence of a sales agreement, the price to the customer is fixed and determinable, collection is reasonably assured, and title and the risk of loss passes to the customer. Shipping terms generally indicate when title and the risk of loss have passed. Revenue is recognized at shipment for sales when shipping terms are FOB (free on board) shipping point. For sales where shipping terms are FOB destination, revenue is recognized when the goods are received by the customer. Shipping terms for wood products and related by-products depend upon the sales agreement with the customer.
	Revenue is recognized net of any sales taxes collected. Sales taxes, when collected, are recorded as a current liability and remitted to the appropriate governmental entities.
Shipping and Handling Costs	'
	SHIPPING AND HANDLING COSTS
	Costs for shipping and handling of manufactured goods are included in cost of goods sold in our Consolidated Statements of Income.

Earnings_per_Share_Tables

Earnings per Share (Tables)	12 Months Ended
	Dec. 31, 2013
Earnings Per Share, Basic, Other Disclosures [Abstract]	'
Reconciliation of Number of Common Shares Used in Calculating Basic and Diluted EPS	'
	The following table reconciles the number of shares used in calculating the basic and diluted earnings per share for the years ended December 31:
	(Dollars in thousands, except per-share amounts)	2013		2012		2011
	Net income	$	70,581	$	42,594	$	40,266
	Basic weighted-average shares outstanding	40,502,878		40,333,333		40,159,141
	Incremental shares due to:
	Performance shares	133,766		134,079		146,157
	Restricted stock units	69,076		70,217		32,455
	Stock options	3,567		15,520		45,232
	Diluted weighted-average shares outstanding	40,709,287		40,553,149		40,382,985
	Basic net income per share	$	1.74	$	1.06	$	1
	Diluted net income per share	$	1.73	$	1.05	$	1
	Anti-dilutive shares excluded from the calculation:
	Performance shares	3,441		—		77,767
	Restricted stock units	—		315		1,500
	Total anti-dilutive shares excluded from the calculation	3,441		315		79,267

Inventories_Inventories_Tables

Inventories Inventories (Tables)	12 Months Ended
	Dec. 31, 2013
Inventory Disclosure [Abstract]	'
Schedule of inventory	'
	(Dollars in thousands)	2013		2012
	Logs	$	14,975	$	12,493
	Lumber and other manufactured wood products	15,967		11,761
	Materials and supplies	5,333		4,674
		$	36,275	$	28,928
	Valued at lower of cost or market:
	Last-in, first-out basis	$	23,250	$	14,636
	Average cost basis	13,025		14,292
	Total inventories	$	36,275	$	28,928

Property_Plant_and_Equipment_P

Property, Plant and Equipment Property, Plant and Equipment (Tables)	12 Months Ended
	Dec. 31, 2013
Property, Plant and Equipment [Abstract]	'
Schedule of Property, Plant and Equipment	'
	(Dollars in thousands)	2013			2012
	Land and land improvements	$	17,201		$	16,448
	Buildings and structures	33,985			32,908
	Machinery and equipment	171,385			165,369
	Construction in progress	1,225			3,188
		223,796			217,913
	Less: accumulated depreciation	(163,820		)	(159,863		)
	Total property, plant and equipment	$	59,976		$	58,050

Timber_and_Timberlands_Timber_

Timber and Timberlands Timber and Timberlands(Tables)	12 Months Ended
	Dec. 31, 2013
Timber and Timberlands [Abstract]	'
Schedule of Timber and Timberlands	'
	(Dollars in thousands)	2013		2012
	Timber and timberlands	$	391,916	$	394,913
	Deposits on timberlands	—		7,871
	Logging roads	63,955		61,683
	Total timber and timberlands	$	455,871	$	464,467

Other_Assets_Other_Assets_Tabl

Other Assets Other Assets (Tables)	12 Months Ended
	Dec. 31, 2013
Other Assets [Abstract]	'
Schedule of Other Assets, Current	'
	Current Other Assets
	(Dollars in thousands)	2013		2012
	Basis of real estate held for sale	$	10,010	$	5,871
	Deferred charges	1,008		1,066
	Prepaid expenses	943		995
	Total current other assets	$	11,961	$	7,932
Schedule of Other Assets, Noncurrent	'
	Noncurrent Other Assets
	(Dollars in thousands)	2013		2012
	Deferred charges	$	5,668	$	6,837
	Noncurrent investments	3,144		1,754
	Derivative asset associated with interest rate swaps	1,830		2,952
	Developed land held for sale	1,733		1,733
	Other	363		123
	Long-term note receivable	—		1,592
	Total noncurrent other assets	$	12,738	$	14,991

Income_Taxes_Tables

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2013
Income Tax Disclosure [Abstract]	'
Schedule of the Income Tax Provision Allocated to Continuing Operations	'
	As a REIT, we generally are not subject to federal and state corporate income taxes on income of the REIT that we distribute to our shareholders. We are, however, subject to corporate taxes on built-in gains (the excess of fair market value over tax basis on January 1, 2006) on sales of real property held by the REIT during the first ten years following the REIT conversion. The sale of standing timber is not subject to built-in gains tax. The Small Business Jobs Act of 2010 modified the built-in gains provisions to exempt sales of real properties in 2011, if five years of the recognition period had elapsed before January 1, 2011. The American Taxpayer Relief Act of 2012 extended the reduced five-year holding period for sales occurring in 2012 and 2013. Accordingly, the built-in gains tax does not apply to sales of real property that occurred in 2011, 2012 and 2013.
	We conduct certain activities through taxable REIT subsidiaries (TRS), which are subject to corporate-level federal and state income taxes. These activities are principally comprised of our wood products manufacturing operations and certain real estate investments held for development and resale.
	We reflect accrued interest related to tax obligations, as well as penalties, in our provision for income taxes. For the years ended December 31, 2013, 2012 and 2011, we recognized insignificant amounts related to interest and penalties in our tax provision. At December 31, 2013 and 2012, we had no accrued interest related to tax obligations and insignificant accrued interest receivable with respect to open tax refunds.
	The income tax provision consists of the following for the years ended December 31:
	(Dollars in thousands)	2013			2012			2011
	Current	$	16,352		$	292		$	(73	)
	Deferred	(2,754		)	8,197			4,990
	Net operating loss carryforwards	287			8,320			(772		)
	Income tax provision	$	13,885		$	16,809		$	4,145
Schedule of Effective Income Tax Rate Reconciliation	'
	The income tax provision differs from the amount computed by applying the statutory federal income tax rate of 35% to income before income taxes due to the following for the years ended December 31:
	(Dollars in thousands)	2013			2012			2011
	U.S. federal statutory income tax	$	29,563		$	20,791		$	15,544
	REIT income not subject to federal income tax	(13,918		)	(5,241		)	(11,739		)
	Change in valuation allowance	(683		)	—			897
	State income taxes, net of federal income tax	942			1,615			54
	Domestic production activities deduction	(1,579		)	—			—
	All other items	(440		)	(356		)	(611		)
	Income tax provision	$	13,885		$	16,809		$	4,145
	Effective tax rate	16.4		%	28.3		%	9.3		%
Schedule of Deferred Tax Assets and Liabilities	'
	The tax effects of significant temporary differences creating deferred tax assets and liabilities at December 31 were:
	(Dollars in thousands)	2013			2012
	Deferred tax assets:
	Pensions	$	16,807		$	38,986
	Postretirement employee benefits	18,464			20,293
	Nondeductible accruals	2,405			3,841
	Inventories	2,636			3,126
	Incentive compensation	2,807			2,843
	Tax credits	2,135			2,678
	Employee benefits	1,586			1,795
	Net operating loss carryforwards	1,056			1,346
	Other	200			124
	Total deferred tax assets	48,096			75,032
	Valuation allowance	(2,184		)	(2,867		)
	Deferred tax assets, net of valuation allowance	45,912			72,165
	Deferred tax liabilities:
	Timber and timberlands	(5,871		)	(6,006		)
	Property, plant and equipment	(10,741		)	(12,360		)
	Total deferred tax liabilities	(16,612		)	(18,366		)
	Net deferred tax assets	$	29,300		$	53,799
	Net deferred tax assets and liabilities consist of:
	(Dollars in thousands)	2013			2012
	Current deferred tax assets	$	7,724		$	10,507
	Noncurrent deferred tax assets	21,576			43,292
	Net deferred tax assets	$	29,300		$	53,799
Summary of Tax Years Subject to Examination by Major Taxing Jurisdictions	'
	The following table summarizes the tax years subject to examination by major taxing jurisdictions:
	Jurisdiction	Years
	Federal	2008	-	2013
	Arkansas	2010	-	2013
	Michigan	2009	-	2013
	Minnesota	2009	-	2013
	Idaho	2010	-	2013

Debt_Debt_Tables

Debt Debt (Tables)	12 Months Ended
	Dec. 31, 2013
Debt Disclosure [Abstract]	'
Schedule of Long-term Debt Instruments	'
	The following table presents our long-term debt as of December 31:
	(Dollars in thousands)	2013			2012
	Senior Notes, 7.50%, due 2019	$	150,000		$	150,000
	Revenue bonds, 5.90% to 7.75%, due 2014 through 20261	108,335			144,985
	Debentures, 6.95%, due 2015	22,500			22,500
	Medium-term notes, 8.75% to 8.89%, due 2016 through 2022	27,250			27,250
	Term loans, 2.95% due 2017 and 3.70% due 2020	12,000			12,000
	Other notes	—			13
		320,085			356,748
	Interest rate swaps	1,830			2,952
	Less unamortized discounts	(1,823		)	(2,124		)
		320,092			357,576
	Less current installments on long-term debt	—			(8,413		)
	Long-term debt	$	320,092		$	349,163
Schedule of Maturities of Long-term Debt	'
	Scheduled payments due on long-term debt during each of the five years subsequent to December 31, 2013, are as follows:
	(Dollars in thousands)
	2014	$	—
	2015	22,500
	2016	5,000
	2017	11,000
	2018	14,250

Accounts_Payable_and_Accrued_L1

Accounts Payable and Accrued Liabilities Accounts Payable and Accrued Liabilities (Tables)	12 Months Ended
	Dec. 31, 2013
Accounts Payable and Accrued Liabilities [Abstract]	'
Schedule of Accounts Payable and Accrued Liabilities	'
	(Dollars in thousands)	2013		2012
	Wages, salaries and employee benefits	$	15,908	$	14,992
	Trade accounts payable	7,702		6,599
	Taxes other than income taxes	6,247		6,363
	Interest	4,018		4,250
	Logging related expenses	1,600		3,456
	Deferred recreational lease income	880		899
	Freight	802		426
	Environmental remediation	—		4,250
	Book overdrafts	2,920		3,875
	Other	3,540		3,176
	Total	$	43,617	$	48,286

Other_LongTerm_Obligations_Oth

Other Long-Term Obligations Other Long-Term Obligations (Tables)	12 Months Ended
	Dec. 31, 2013
Other Long-term Debt [Abstract]	'
Schedule of Other Long-Term Obligations	'
	(Dollars in thousands)	2013		2012
	Employee benefits and related liabilities	$	15,423	$	15,215
	Other	6,930		7,242
	Total	$	22,353	$	22,457

Financial_Instruments_and_Conc1

Financial Instruments and Concentration of Risk (Tables)	12 Months Ended
	Dec. 31, 2013
Derivative Instrument Detail [Abstract]	'
Estimated Fair Value of Financial Instruments	'
	Estimated fair values of our financial instruments as of December 31 are as follows:
		2013						2012
	(Dollars in thousands)	CARRYING			FAIR			CARRYING			FAIR
		AMOUNT			VALUE			AMOUNT			VALUE
	Cash and short-term investments (Level 1)	$	57,837		$	57,837		$	80,062		$	80,062
	Net derivative asset related to interest rate swaps (Level 2)	1,830			1,830			2,952			2,952
	Long-term debt (including current installments on long-term debt and fair value adjustments related to fair value swaps) (Level 2)	320,092			347,869			357,576			379,048
Fair Values of Derivative Instruments	'
	The fair values of derivative instruments on our Consolidated Balance Sheets as of December 31 are as follows:
		DERIVATIVE ASSETS
			2013			2012
	(Dollars in thousands)	BALANCE SHEET	FAIR VALUE			FAIR VALUE
		LOCATION
	Derivatives designated as hedging instruments:
	Interest rate contracts	Other noncurrent assets	$	1,830		$	2,952
	Total derivatives designated as hedging instruments		$	1,830		$	2,952
Effect of Derivatives on the Consolidated Statements of Operations	'
	The effect of derivatives on the Consolidated Statements of Income for the years ended December 31, 2013, 2012 and 2011 are as follows:
		LOCATION OF GAIN (LOSS) RECOGNIZED IN	AMOUNT OF GAIN (LOSS)
		INCOME	RECOGNIZED IN INCOME
	(Dollars in thousands)		2013			2012			2011
	Derivatives designated in fair value hedging relationships:
	Interest rate contracts
	Realized gain on hedging instrument1	Interest expense	$	960		$	868		$	1,027
	Net gain recognized in income from fair value hedges		$	960		$	868		$	1,027
	Derivatives not designated as hedging instruments:
	Lumber contracts
	Unrealized gain (loss) on derivative	Cost of goods sold	$	—		$	(480	)	$	3,356
	Realized gain (loss) on derivative	Cost of goods sold	—			(396		)	1,164
	Net gain (loss) recognized in income from derivatives not designated as hedging instruments		$	—		$	(876	)	$	4,520
	1	Realized gain on hedging instrument consists of net cash settlements and interest accruals on the interest rate swaps during the period.

Savings_Plans_Pension_Plans_an1

Savings Plans, Pension Plans and Other Postretirement Employee Benefits (Tables)	12 Months Ended
	Dec. 31, 2013
General Discussion of Pension and Other Postretirement Benefits [Abstract]	'
Schedule of Changes in Projected Benefit Obligations	'
	We use a December 31 measurement date for our benefit plans and obligations.
	The change in benefit obligation, change in plan assets and funded status for company-sponsored benefit plans and obligations are as follows:
		PENSION PLANS						OTHER POSTRETIREMENT
								EMPLOYEE BENEFITS
	(Dollars in thousands)	2013			2012			2013			2012
	Benefit obligation at beginning of year	$	445,535		$	418,251		$	52,033		$	65,195
	Service cost	5,318			5,238			94			284
	Interest cost	17,826			19,986			1,810			2,478
	Plan amendments	—			510			—			(6,045		)
	Actuarial loss (gain)	(41,178		)	38,329			(2,692		)	(4,878		)
	Benefits paid	(33,936		)	(36,779		)	(3,902		)	(5,001		)
	Benefit obligation at end of year	393,565			445,535			47,343			52,033
	Fair value of plan assets at beginning of year	345,633			312,158			—			—
	Actual return on plan assets	37,157			46,905			—			—
	Employer contributions and benefit payments	1,734			23,349			3,902			5,001
	Benefits paid	(33,936		)	(36,779		)	(3,902		)	(5,001		)
	Fair value of plan assets at end of year	350,588			345,633			—			—
	Amounts recognized in the consolidated balance sheets:
	Current liabilities	$	(1,772	)	$	(1,775	)	$	(4,929	)	$	(5,113	)
	Noncurrent liabilities	(41,205		)	(98,127		)	(42,414		)	(46,920		)
	Funded status	$	(42,977	)	$	(99,902	)	$	(47,343	)	$	(52,033	)
Schedule of Weighted Average Asset Allocations of the Pension Benefit Plans' Assets	'
	The weighted average asset allocations of the pension benefit plans’ assets at December 31 by asset category are as follows:
		PENSION PLANS
	ASSET CATEGORY	2013		2012
	Domestic equity securities	20	%	22	%
	Debt securities	38		36
	Global/international equity securities	27		28
	Other	15		14
	Total	100	%	100	%
Schedule of Allocation of Plan Assets	'
	Fair Value Measurements at December 31, 2013:
	(Dollars in thousands)
	ASSET CATEGORY	QUOTED PRICES IN			SIGNIFICANT			SIGNIFICANT			TOTAL
		ACTIVE MARKETS FOR			OBSERVABLE			UNOBSERVABLE
		IDENTICAL ASSETS			INPUTS			INPUTS
		(LEVEL 1)			(LEVEL 2)			(LEVEL 3)
	Cash and equivalents	$	9,673		$	—		$	—		$	9,673
	Equity securities:
	U.S. large cap1	32,304			—			—			32,304
	U.S. small/mid cap2	19,053			—			—			19,053
	International companies	34,773			—			—			34,773
	Mutual funds3	185,505			—			—			185,505
	Collective investments:
	Developed markets4	—			17,401			—			17,401
	Emerging markets5	—			41,300			—			41,300
	Hedge funds6	—			—			10,579			10,579
	Total	$	281,308		$	58,701		$	10,579		$	350,588
	1	These are managed investments in US large cap equities that track the Russell 1000 Value index.
	2	These are managed investments in US small/mid cap equities that track the Russell 2500 Growth index.
	3	The mutual funds were 50% invested in high-quality intermediate and long-term investment grade securities and 50% invested in a diversified portfolio of fixed-income instruments of varying maturities, which may be represented by forwards or derivatives such as options, futures contracts or swap agreements and debt securities.
	4	These collective investments are invested in equity funds of developed markets outside of the US & Canada, that track the MSCI EAFE index.
	5	These collective investments are invested in equity funds of emerging markets outside of the US & Canada, that track the MSCI Emerging Markets index.
	6	The hedge funds are 37% invested in long/short and event-driven equity, 24% invested in long and short credit, 11% in relative value, 10% invested in distressed debt, 6% invested in convertible bond hedging, with the remaining 12% in other investments.
	Fair Value Measurements at December 31, 2012:
	(Dollars in thousands)
	ASSET CATEGORY	QUOTED PRICES IN			SIGNIFICANT			SIGNIFICANT			TOTAL
		ACTIVE MARKETS FOR			OBSERVABLE			UNOBSERVABLE
		IDENTICAL ASSETS			INPUTS			INPUTS
		(LEVEL 1)			(LEVEL 2)			(LEVEL 3)
	Cash and equivalents	$	2,085		$	—		$	—		$	2,085
	Equity securities:
	U.S. large cap1	35,099			—			—			35,099
	U.S. small/mid cap2	21,516			—			—			21,516
	International companies	9,400			—			—			9,400
	Mutual funds3	124,453			—			—			124,453
	Collective investments:
	U.S. small/mid cap4	—			19,803			—			19,803
	Developed markets5	—			47,916			—			47,916
	Emerging markets6	—			40,983			—			40,983
	Hedge funds7	—			—			45,693			45,693
	Securities pledged to creditors:
	Money market8	—			1,499			—			1,499
	Mortgage-backed securities9	—			1,992			—			1,992
	Subtotal	192,553			112,193			45,693			350,439
	Payable held under securities lending agreements10	(4,806		)	—			—			(4,806		)
	Total	$	187,747		$	112,193		$	45,693		$	345,633
	1	These are managed investments in US large cap equities that track the Russell 1000 Value index.
	2	These are managed investments in US small/mid cap equities that track the Russell 2500 Growth index.
	3	The mutual funds were 50% invested in high-quality intermediate and long-term investment grade securities and 50% invested in a diversified portfolio of fixed-income instruments of varying maturities, which may be represented by forwards or derivatives such as options, futures contracts or swap agreements and debt securities.
	4	These are managed investments in US small/mid cap equities that track the Russell 2500 Value index.
	5	These collective investments are invested in equity funds of developed markets outside of the US & Canada, that track the MSCI EAFE index.
	6	These collective investments are invested in equity funds of emerging markets outside of the US & Canada, that track the MSCI Emerging Markets index.
	7	The hedge funds are 53% invested in long/short and event-driven equity, 11% invested in long and short credit, 14% in relative value, 5% invested in fixed income relative value, 4% invested in distressed debt, with the remaining 13% in other investments.
	8	The money market holdings are invested in the Mount Vernon Securities Lending Trust Prime Portfolio.
	9	The mortgage-backed securities are maintained in the U.S. Bank Illiquid Securities Liquidating Trust.
	10	This category represents a payable under the securities lending agreements.
Schedule of Summary of Changes in the Fair Value of the Plans' Level 3 Assets	'
	The following table sets forth a summary of changes in the fair value of the plans’ Level 3 assets for the years ended December 31:
		Hedge Funds
	(Dollars in thousands)	2013			2012
	Balance, beginning of year	$	45,693		$	42,940
	Sales and settlements	(34,500		)	—
	Unrealized gains (losses) relating to assets still held at the reporting date	(614		)	2,753
	Balance, end of year	$	10,579		$	45,693
Schedule of Net Benefit Costs	'
	Pre-tax components of net periodic cost (benefit) recognized in our Consolidated Statements of Income were as follows:
		PENSION PLANS									OTHER POSTRETIREMENT
											EMPLOYEE BENEFITS
	(Dollars in thousands)	2013			2012			2011			2013			2012			2011
	Service cost	$	5,318		$	5,238		$	4,456		$	94		$	284		$	446
	Interest cost	17,826			19,986			21,325			1,810			2,478			3,486
	Expected return on plan assets	(26,092		)	(28,755		)	(31,804		)	—			—			—
	Curtailment credit	—			—			—			—			(103		)	—
	Amortization of prior service cost (credit)	779			770			684			(9,708		)	(9,343		)	(8,536		)
	Amortization of actuarial loss	19,929			15,356			9,916			3,209			3,127			3,967
	Net periodic cost (benefit)	$	17,760		$	12,595		$	4,577		$	(4,595	)	$	(3,557	)	$	(637	)
Schedule of Amounts Recognized in Other Comprehensive Income (Loss)	'
	Other amounts recognized in our Consolidated Statements of Comprehensive Income were as follows:
		PENSION PLANS									OTHER POSTRETIREMENT
											EMPLOYEE BENEFITS
	(Dollars in thousands)	2013			2012			2011			2013			2012			2011
	Net amount at beginning of year	$	161,667		$	158,883		$	130,445		$	(20,769	)	$	(18,001	)	$	(16,690	)
	Amounts arising during the period:
	Net loss (gain)	(52,242		)	20,180			57,220			(2,692		)	(4,878		)	(913		)
	Prior service cost (credit)	—			510			—			—			(5,942		)	(5,805		)
	Taxes	20,374			(8,069		)	(22,316		)	1,050			4,260			2,620
	Net amount arising during the period	(31,868		)	12,621			34,904			(1,642		)	(6,560		)	(4,098		)
	Amounts reclassified during the period:
	Amortization of prior service (cost) credit	(779		)	(770		)	(684		)	9,708			9,343			8,536
	Amortization of actuarial loss	(19,929		)	(15,356		)	(9,916		)	(3,209		)	(3,127		)	(3,967		)
	Taxes	8,076			6,289			4,134			(2,535		)	(2,424		)	(1,782		)
	Net reclassifications during the period	(12,632		)	(9,837		)	(6,466		)	3,964			3,792			2,787
	Net amount at end of year	$	117,167		$	161,667		$	158,883		$	(18,447	)	$	(20,769	)	$	(18,001	)
Schedule of Accumulated Other Comprehensive Income (Loss)	'
	Amounts recognized in accumulated other comprehensive loss on our Consolidated Balance Sheets, net of tax, consist of:
		PENSION PLANS						OTHER POSTRETIREMENT
								EMPLOYEE BENEFITS
	(Dollars in thousands)	2013			2012			2013			2012
	Net loss	$	115,404		$	159,429		$	16,490		$	20,090
	Prior service cost (credit)	1,763			2,238			(34,937		)	(40,859		)
	Net amount recognized	$	117,167		$	161,667		$	(18,447	)	$	(20,769	)
Schedule of Expected Future Benefit Payments	'
	Estimated future benefit payments, which reflect expected future service are as follows for the years indicated:
	(Dollars in thousands)	PENSION PLANS			OTHER POSTRETIREMENT
					EMPLOYEE BENEFITS
	2014	$	30,033		$	4,929
	2015		29,836			4,835
	2016		29,566			4,699
	2017		29,287			4,490
	2018		29,064			4,248
	2019 – 2022		143,152			17,734
Weighted Average Assumptions Used to Determine the Benefit Obligation	'
	The weighted average assumptions used to determine the benefit obligation as of December 31 were:
		PENSION PLANS						OTHER POSTRETIREMENT
								EMPLOYEE BENEFITS
		2013		2012		2011		2013		2012		2011
	Discount rate	5.1	%	4.15	%	4.95	%	4.45	%	3.7	%	4.85	%
	Rate of salaried compensation increase	3	%	3.5	%	3.5	%	—		—		—
Schedule of Weighted Average Assumptions Used to Determine the Net Periodic Benefit (Cost)	'
	The weighted average assumptions used to determine the net periodic benefit (cost) for the years ended December 31 were:
		PENSION PLANS						OTHER POSTRETIREMENT
								EMPLOYEE BENEFITS
		2013		2012		2011		2013		2012		2011
	Discount rate	4.15	%	4.95	%	5.65	%	3.7	%	4.85	%	5.4	%
	Expected return on plan assets	8	%	8	%	8.5	%	—		—		—
	Rate of salaried compensation increase	3.5	%	3.5	%	4	%	—		—		—
Schedule of Effect of One-Percentage-Point Change in Assumed Health Care Cost Trend Rates	'
	A one percentage point change in the health care cost trend rates would have the following effects on our December 31, 2013 Consolidated Financial Statements:
	(Dollars in thousands)	1% INCREASE			1% DECREASE
	Effect on total service and interest cost components	$	33		$	(29	)
	Effect on accumulated postretirement benefit obligation	519			(475		)

Commitments_and_Contingencies_

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2013
Commitments and Contingencies Disclosure [Abstract]	'
Schedule of Environmental Loss Contingencies by Site	'
	The following table details our Avery Landing environmental remediation charge and reserve balance for the years ended December 31:
	(Dollars in thousands)	2013			2012
	Beginning reserve balance	$	4,250		$	6,000
	Environmental remediation charge	3,522			—
	Cash payments	(7,772		)	(1,750		)
	Ending reserve balance	$	—		$	4,250
Schedule of Future Minimum Rental Payments for Operating Leases	'
	As of December 31, 2013, the future minimum rental payments required under our operating leases are as follows:
	(Dollars in thousands)
	2014	$	3,335
	2015	3,012
	2016	2,016
	2017	1,052
	2018	439
	2019 and thereafter	131
	Total	$	9,985

EquityBased_Compensation_Plans1

Equity-Based Compensation Plans (Tables)	12 Months Ended
	Dec. 31, 2013
Share-based Compensation [Abstract]	'
Details of Compensation Expense	'
	The following table details our compensation expense and the related income tax benefit as of December 31:
	(Dollars in thousands)	2013			2012			2011
	Employee equity-based compensation expense:
	Performance shares	$	3,635		$	3,440		$	3,821
	Restricted stock units	742			627			583
	Total employee equity-based compensation expense	$	4,377		$	4,067		$	4,404
	Director deferred compensation expense	$	1,265		$	2,008		$	619
	Actual tax benefit realized for tax deductions from equity-based plans	$	71		$	525		$	—
Summary of Outstanding Stock Options	'
	A summary of the status of outstanding stock options as of December 31, 2013, 2012 and 2011 and changes during those years is presented below:
		2013						2012					2011
		SHARES			WEIGHTED AVG.			SHARES			WEIGHTED AVG.		SHARES			WEIGHTED AVG.
					EXERCISE PRICE						EXERCISE PRICE					EXERCISE PRICE
	Outstanding at January 1	83,827			$	27.46		144,684			$	23.34	222,130			$	21.64
	Shares exercised	(70,968		)	26.25			(60,857		)	17.66		(77,446		)	18.47
	Outstanding and exercisable at December 31	12,859			30.92			83,827			27.46		144,684			23.34
	Total intrinsic value of options exercised during the year (in thousands)	$	1,423					$	938				$	1,496
Fair Value of Performance Share Awards	'
	The following table presents the key inputs used in calculating the fair value of the performance share awards in 2013, 2012 and 2011, and the resulting fair values:
		2013			2012			2011
	Shares granted	83,111			85,028			77,767
	Stock price as of valuation date	$	45.31		$	31.11		$	39.1
	Risk-free rate	0.4		%	0.4		%	1.26		%
	Fair value of a performance share	$	62.78		$	34.24		$	55.84
Summary of Outstanding Performance Share Awards	'
	The following table summarizes outstanding performance share awards as of December 31, 2013, 2012 and 2011, and changes during those years:
	(Dollars in thousands, except	2013						2012					2011
	per-share amounts)	SHARES			WEIGHTED AVG.			SHARES			WEIGHTED AVG.		SHARES			WEIGHTED AVG.
					GRANT DATE						GRANT DATE					GRANT DATE
					FAIR VALUE						FAIR VALUE					FAIR VALUE
	Unvested shares outstanding at January 1	160,214			$	44.5		154,594			$	50.54	184,601			$	38.45
	Granted	83,111			62.78			85,028			34.24		77,767			55.84
	Vested	(71,861		)	55.84			(76,812		)	45.3		(103,960		)	33.32
	Forfeited	(15,650		)	47.32			(2,596		)	44.99		(3,814		)	42.77
	Unvested shares outstanding at December 31	155,814			48.73			160,214			44.5		154,594			50.54
	Total grant date fair value of share awards vested during the year	$	4,013					$	3,480				$	3,464
	Aggregate intrinsic value of unvested share awards at December 31	$	6,504					$	6,019				$	4,747
Summary of Outstanding RSU Awards	'
	A summary of the status of outstanding RSU awards as of December 31, 2013, 2012 and 2011, and changes during these years is presented below:
		2013						2012					2011
		SHARES			WEIGHTED AVERAGE GRANT DATE			SHARES			WEIGHTED AVERAGE GRANT DATE		SHARES			WEIGHTED AVERAGE GRANT DATE
					FAIR VALUE						FAIR VALUE					FAIR VALUE
	Unvested shares outstanding at January 1	40,219			$	34.82		36,359			$	35.6	41,715			$	29.37
	Granted	23,449			44.41			20,225			31.53		18,053			38.57
	Vested	(19,796		)	38.19			(14,861		)	32.41		(21,510		)	26.26
	Forfeited	(6,411		)	36.91			(1,504		)	33.36		(1,899		)	32.78
	Unvested shares outstanding at December 31	37,461			38.69			40,219			34.82		36,359			35.6
	Total grant date fair value of RSU awards vested during the year (in thousands)	$	756					$	482				$	565
	Aggregate intrinsic value of unvested RSU awards at December 31 (in thousands)	$	2,511					$	1,575				$	1,131
Summary of Outstanding Stock Options by Exercise Price Range	'
	The following table summarizes information about stock options outstanding at December 31, 2013:
		OPTIONS OUTSTANDING AND EXERCISABLE
	EXERCISE PRICE	NUMBER		WEIGHTED AVERAGE REMAINING		WEIGHTED AVERAGE OPTION PRICE			AGGREGATE
		OUTSTANDING		CONTRACTUAL LIFE					INTRINSIC VALUE
		AT 12/31/12							(IN THOUSANDS)
	$30.92	12,859		0.92 years		$	30.92		$	139

Segment_Information_Tables

Segment Information (Tables)	12 Months Ended
	Dec. 31, 2013
Segment Reporting Information, Additional Information [Abstract]	'
Summary of Information by Business Segment	'
	The following table presents business segment information for each of the past three years. Corporate information is included to reconcile segment data to the Consolidated Financial Statements.
	(Dollars in thousands)	2013			2012			2011
	Revenues:
	Resource	$	238,228		$	207,846		$	226,969
	Wood Products	366,015			329,404			271,580
	Real Estate	26,160			38,238			50,029
		630,403			575,488			548,578
	Elimination of intersegment revenues - Resource1	(60,114		)	(50,354		)	(51,157		)
	Total consolidated revenues	$	570,289		$	525,134		$	497,421
	Operating Income:
	Resource	$	73,425		$	49,543		$	59,792
	Wood Products	58,892			45,456			7,267
	Real Estate	18,266			28,056			31,384
	Eliminations and adjustments	(907		)	(1,061		)	2,410
		149,676			121,994			100,853
	Corporate	(65,210		)	(62,591		)	(56,442		)
	Income before income taxes	$	84,466		$	59,403		$	44,411
	Depreciation, depletion and amortization:
	Resource	$	18,103		$	16,446		$	17,420
	Wood Products	6,194			6,538			7,829
	Real Estate	56			36			28
		24,353			23,020			25,277
	Corporate	2,609			3,227			3,815
	Total depreciation, depletion and amortization	$	26,962		$	26,247		$	29,092
	Basis of real estate sold:
	Real Estate	$	3,536		$	5,413		$	13,500
	Elimination and adjustments	(632		)	(365		)	(3,281		)
	Total basis of real estate sold	$	2,904		$	5,048		$	10,219
	Assets:
	Resource and Real Estate2	$	476,628		$	477,271		$	476,483
	Wood Products	115,664			100,190			102,957
		592,292			577,461			579,440
	Corporate	88,238			141,436			166,780
	Total consolidated assets	$	680,530		$	718,897		$	746,220
	Capital Expenditures:
	Resource and Real Estate2	$	13,509		$	23,916		$	12,003
	Wood Products	9,013			4,427			4,050
		22,522			28,343			16,053
	Corporate	1,131			845			833
	Total capital expenditures	$	23,653		$	29,188		$	16,886
	1	Intersegment revenues for 2011-2013, which were based on prevailing market prices, consisted of logs sold by our Resource segment to the Wood Products segment.
	2	Assets are shown on a combined basis for the Resource and Real Estate segments, as we do not produce information separately for those segments for internal purposes.
Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area	'
	All of our wood products facilities and all other assets are located within the continental United States. We sell and ship products to Canada and Mexico. Geographic information regarding our revenues is summarized as follows:
	(Dollars in thousands)	2013			2012			2011
	United States	$	558,138		$	516,466		$	490,409
	Canada	9,645			5,180			4,646
	Mexico	2,506			3,488			2,366
	Total consolidated revenues	$	570,289		$	525,134		$	497,421

Financial_Results_by_Quarter_F

Financial Results by Quarter Financial Resutls by Quarter (Tables)	12 Months Ended
	Dec. 31, 2013
Quarterly Financial Data [Abstract]	'
Schedule of Quarterly Financial Information	'
		THREE MONTHS ENDED
	(Dollars in thousands, except per-share amounts)	MARCH 31				JUNE 30				SEPTEMBER 30				DECEMBER 31
		2013		2012		2013		2012		2013		2012		2013		2012
	Revenues	$	139,253	$	112,384	$	133,212	$	117,540	$	157,869	$	151,911	$	139,955	$	143,299
	Operating income	26,608		12,519		29,441		17,090		30,904		28,763		20,645		26,570
	Net income	15,487		5,051		19,182		5,080		22,191		18,599		13,721		13,864
	Net income per share1
	Basic	$	0.38	$	0.13	$	0.47	$	0.13	$	0.55	$	0.46	$	0.34	$	0.34
	Diluted	0.38		0.13		0.47		0.13		0.54		0.46		0.34		0.34
	1	Per-share amounts are computed independently for each of the quarters presented. Therefore, the sum of the quarterly per-share amounts may not equal the total computed for the year.

Summary_of_Principal_Accountin2

Summary of Principal Accounting Policies Summary of Principal Accounting Policies (Details)	12 Months Ended
	Dec. 31, 2013
	acre
Accounting Policies [Abstract]	'
Timber And Timberlands Acres Owned	1,400,000
Buildings and Structures Useful Life Minimum	'30 years 0 months 0 days
Buildings and Structures Useful Life Maximum	'40 years 0 months 0 days
Equipment Useful Life Minimum	'2 years 0 months 0 days
Equipment Useful Life Maximum	'25 years 0 months 0 days
Historic Average Annual Growth Rate for Merchantable Inventory Range, Minimum	2.00%
Historic Average Annual Growth Rate for Mechantable Inventory Range, Maximum	5.00%
Bridges, Culverts and Gravel Surfacing Useful Life Minimum	'5 years 0 months 0 days
Bridges, Culverts and Gravel Surfacing Useful Life Maximum	'20 years 0 months 0 days

Earnings_per_Share_Reconciliat

Earnings per Share (Reconciliation Of Number Of Common Shares Used In Calculating Basic And Diluted EPS) (Details) (USD $)

3 Months Ended

12 Months Ended

In Thousands, except Share data, unless otherwise specified

Dec. 31, 2013

Sep. 30, 2013

Jun. 30, 2013

Mar. 31, 2013

Dec. 31, 2012

Sep. 30, 2012

Jun. 30, 2012

Mar. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Earnings per Share [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Net income

$13,721

$22,191

$19,182

$15,487

$13,864

$18,599

$5,080

$5,051

$70,581

$42,594

$40,266

Basic weighted-average shares outstanding (in shares)

'

'

'

'

'

'

'

'

40,502,878

40,333,333

40,159,141

Diluted weighted-average shares outstanding (in shares)

'

'

'

'

'

'

'

'

40,709,287

40,553,149

40,382,985

Basic net income per share (in dollars per share)

$0.34

[1]

$0.55

[1]

$0.47

[1]

$0.38

[1]

$0.34

[1]

$0.46

[1]

$0.13

[1]

$0.13

[1]

$1.74

$1.06

$1

Diluted net income per share (in dollars per share)

$0.34

[1]

$0.54

[1]

$0.47

[1]

$0.38

[1]

$0.34

[1]

$0.46

[1]

$0.13

[1]

$0.13

[1]

$1.73

$1.05

$1

Anti-dilutive shares excluded from the calculation (in shares)

'

'

'

'

'

'

'

'

3,441

315

79,267

Performance Shares [Member]

'

'

'

'

'

'

'

'

'

'

'

Earnings per Share [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Incremental shares (in shares)

'

'

'

'

'

'

'

'

133,766

134,079

146,157

Anti-dilutive shares excluded from the calculation (in shares)

'

'

'

'

'

'

'

'

3,441

0

77,767

Restricted Stock Units (RSUs) [Member]

'

'

'

'

'

'

'

'

'

'

'

Earnings per Share [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Incremental shares (in shares)

'

'

'

'

'

'

'

'

69,076

70,217

32,455

Anti-dilutive shares excluded from the calculation (in shares)

'

'

'

'

'

'

'

'

0

315

1,500

Stock Options [Member]

'

'

'

'

'

'

'

'

'

'

'

Earnings per Share [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Incremental shares (in shares)

'

'

'

'

'

'

'

'

3,567

15,520

45,232

[1]

1 Per-share amounts are computed independently for each of the quarters presented. Therefore, the sum of the quarterly per-share amounts may not equal the total computed for the year.

Inventories_Inventories_Detail

Inventories Inventories (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Inventory Disclosure [Abstract]	'	'	'
Logs	$14,975,000	$12,493,000	'
Lumber And Other Manufactured Wood Products	15,967,000	11,761,000	'
Materials and Supplies	5,333,000	4,674,000	'
Inventories, Total	36,275,000	28,928,000	'
Last-In, First-Out Basis	23,250,000	14,636,000	'
Average Cost Basis	13,025,000	14,292,000	'
Last-In, First-Out Reserve	11,300,000	10,600,000	9,700,000
Excess of Replacement or Current Costs over Stated LIFO Value	($900,000)	($1,200,000)	($800,000)

Property_Plant_and_Equipment_P1

Property, Plant and Equipment Property, Plant and Equipment (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Property, Plant and Equipment [Line Items]	'	'	'
Land and Land Improvements	$17,201,000	$16,448,000	'
Buildings and structures	33,985,000	32,908,000	'
Machinery and Equipment	171,385,000	165,369,000	'
Construction in Progress	1,225,000	3,188,000	'
Property, Plant and Equipment, Gross	223,796,000	217,913,000	'
Accumulated Depreciation	-163,820,000	-159,863,000	'
Property, Plant and Equipment, Net	59,976,000	58,050,000	'
Depreciation	$8,200,000	$8,800,000	$9,800,000

Timber_and_Timberlands_Timber_1

Timber and Timberlands Timber and Timberlands (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Timber and Timberlands [Line Items]	'	'	'
Timber and Timberlands	$391,916,000	$394,913,000	'
Deposits on Timberlands	0	7,871,000	'
Logging Roads	63,955,000	61,683,000	'
Timber and Timberlands, Net	455,871,000	464,467,000	'
Depletion from Company Owned Lands	14,600,000	12,900,000	14,100,000
Amortization of Logging Roads	$2,700,000	$2,600,000	$2,400,000

Timber_and_Timberlands_Timber_2

Timber and Timberlands Timber and Timberlands (Narrative) (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013
	acre
Property, Plant and Equipment [Line Items]	'
Timberland Acquisitions	2
Payments under timber cutting contracts, due in 2013	$2.10
Payments under timber cutting contracts, due in 2014	4.5
Payments under timber cutting contracts, due in 2015	1.5
Payments under timber cutting contracts, due in 2016	4.2
Red Springs [Member]	'
Property, Plant and Equipment [Line Items]	'
Acres aquired through timberland purchase	2,981
Payments to Acquire and Develop Real Estate	3.9
Taylor Pines [Member]	'
Property, Plant and Equipment [Line Items]	'
Acres aquired through timberland purchase	6,304
Payments to Acquire and Develop Real Estate	$7.90

Other_Assets_Other_Assets_Curr

Other Assets Other Assets (Current and Noncurrent Other Assets) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Other Assets [Abstract]	'	'
Basis of real estate held for sale	$10,010	$5,871
Deferred charges	1,008	1,066
Prepaid expense	943	995
Current Other Assets, Total	11,961	7,932
Deferred charges	5,668	6,837
Noncurrent investments	3,144	1,754
Derivative asset associated with interest rate swap	1,830	2,952
Developed land held for sale	1,733	1,733
Other	363	123
Long term note receivable	0	1,592
Noncurrent Other Assets, Total	$12,738	$14,991

Income_Taxes_Narrative_Details

Income Taxes (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Income Tax Disclosure [Abstract]	'	'
Statutory Federal Income Tax Rate	35.00%	'
Deferred Tax Assets, Valuation Allowance	$2,184,000	$2,867,000
Change in Valuation Allowance	700,000	'
Operating Loss Carryforwards	24,000,000	'
Deferred Tax Assets, Operating Loss Carryforwards, State and Local	$3,200,000	'

Income_Taxes_Schedule_of_Incom

Income Taxes (Schedule of Income Tax Provision (Benefit)) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]	'	'	'
Current	$16,352	$292	($73)
Deferred	-2,754	8,197	4,990
Net operating loss carryforwards	287	8,320	-772
Income Tax Provision, Total	$13,885	$16,809	$4,145

Income_Taxes_Schedule_of_Recon

Income Taxes (Schedule of Reconciliation of Income Tax Provision (Benefit)) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]	'	'	'
U.S. federal statutory income tax	$29,563	$20,791	$15,544
REIT income not subject to federal income tax	-13,918	-5,241	-11,739
Change in valuation allowance	-683	0	897
State and local taxes, net of federal income tax	942	1,615	54
Domestic production activities deduction	1,579	0	0
All other items	-440	-356	-611
Income Tax Provision, Total	$13,885	$16,809	$4,145
Effective Tax Rate	16.40%	28.30%	9.30%

Income_Taxes_Schedule_of_Compo

Income Taxes (Schedule of Components of Deferred Income Tax Assets and Liabilities) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Income Tax Disclosure [Abstract]	'	'
Pensions	$16,807	$38,986
Postretirement employee benefits	18,464	20,293
Nondeductible accruals	2,405	3,841
Inventories	2,636	3,126
Incentive compensation	2,807	2,843
Tax credits	2,135	2,678
Employee benefits	1,586	1,795
Net operating loss carryforwards	1,056	1,346
Other	200	124
Deferred Tax Assets, Total	48,096	75,032
Valuation allowance	-2,184	-2,867
Deferred tax assets, net of valuation allowance	45,912	72,165
Timber and timberlands	-5,871	-6,006
Property, plant and equipment	-10,741	-12,360
Deferred tax liabilities, total	-16,612	-18,366
Net deferred tax assets	$29,300	$53,799

Income_Taxes_Schedule_of_Defer

Income Taxes (Schedule of Deferrred Income Tax Asset (Liability) Classification (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Income Tax Disclosure [Abstract]	'	'
Current deferred tax assets	$7,724	$10,507
Noncurrent deferred tax assets	21,576	43,292
Net deferred tax assets	$29,300	$53,799

Debt_Schedule_of_LongTerm_Debt

Debt (Schedule of Long-Term Debt) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Debt Instrument [Line Items]	'		'		'
Long-term debt, Including current installments on long-term debt	$320,092		$357,576		'
Debt Instrument, Face Amount	320,085		356,748		'
Debt Instrument, Unamortized Discount	-1,823		-2,124		'
Less current installments on long-term debt	0		-8,413		'
Long-term debt	320,092		349,163		'
Repayments of Long-term Debt	36,663		21,662		5,011
7.5% Senior Notes, due 2019 [Member]	'		'		'
Debt Instrument [Line Items]	'		'		'
Long-term debt, Including current installments on long-term debt	150,000		150,000		'
Interest Rate	7.50%		'		'
Revenue bonds, fixed rate 5.9% to 7.75%, due 2014 through 2026 [Member]	'		'		'
Debt Instrument [Line Items]	'		'		'
Long-term debt, Including current installments on long-term debt	108,335	[1]	144,985	[1]	'
Revenue bonds, fixed rate 5.9% to 7.75%, due 2014 through 2026 [Member] | Minimum [Member]	'		'		'
Debt Instrument [Line Items]	'		'		'
Interest Rate	5.90%		'		'
Revenue bonds, fixed rate 5.9% to 7.75%, due 2014 through 2026 [Member] | Maximum [Member]	'		'		'
Debt Instrument [Line Items]	'		'		'
Interest Rate	7.75%		'		'
Debentures, 6.95%, due 2015 [Member]	'		'		'
Debt Instrument [Line Items]	'		'		'
Long-term debt, Including current installments on long-term debt	22,500		22,500		'
Interest Rate	6.95%		'		'
Medium-term notes, fixed rate 8.75% to 8.89%, due 2016 through 2022 [Member]	'		'		'
Debt Instrument [Line Items]	'		'		'
Long-term debt, Including current installments on long-term debt	27,250		27,250		'
Medium-term notes, fixed rate 8.75% to 8.89%, due 2016 through 2022 [Member] | Minimum [Member]	'		'		'
Debt Instrument [Line Items]	'		'		'
Interest Rate	8.75%		'		'
Medium-term notes, fixed rate 8.75% to 8.89%, due 2016 through 2022 [Member] | Maximum [Member]	'		'		'
Debt Instrument [Line Items]	'		'		'
Interest Rate	8.89%		'		'
Term Loans, fixed rate 2.95% due 2017 and 3.70% due 2020 [Member]	'		'		'
Debt Instrument [Line Items]	'		'		'
Long-term debt, Including current installments on long-term debt	12,000		12,000		'
Term Loans, fixed rate 2.95% due 2017 and 3.70% due 2020 [Member] | Minimum [Member]	'		'		'
Debt Instrument [Line Items]	'		'		'
Interest Rate	2.95%		'		'
Term Loans, fixed rate 2.95% due 2017 and 3.70% due 2020 [Member] | Maximum [Member]	'		'		'
Debt Instrument [Line Items]	'		'		'
Interest Rate	3.70%		'		'
Other notes [Member]	'		'		'
Debt Instrument [Line Items]	'		'		'
Long-term debt, Including current installments on long-term debt	0		13		'
Interest Rate Swaps [Member]	'		'		'
Debt Instrument [Line Items]	'		'		'
Long-term debt, Including current installments on long-term debt	1,830		2,952		'
Long-Term Debt due in 2013 [Member]	'		'		'
Debt Instrument [Line Items]	'		'		'
Repayments of Long-term Debt	8,400		'		'
Long-Term Debt due in 2014 [Member]	'		'		'
Debt Instrument [Line Items]	'		'		'
Repayments of Long-term Debt	$21,000		'		'
[1]	1 In 2013, $36.7 million of long-term debt was redeemed prior to its scheduled maturities. This included $8.4 million that was due later in 2013 and $21.0 million that was the total amount due in 2014.

Debt_Line_of_Credit_Details

Debt (Line of Credit) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013
Line of Credit Facility [Line Items]	'
Amout Available to Increase Borrowing Capacity	$100,000,000
Remaining Borrowing Capacity	248,100,000
Line of Credit [Member]	'
Line of Credit Facility [Line Items]	'
Maximum Borrowing Capacity	250,000,000
Line of Credit Facility, Amount Outstanding	0
Additional Applicable Rate Added to Base Rate, Minimum	1.50%
Additional Applicable Rate Added to Base Rate, At End of Period	0.50%
Unused Capacity, Commitment Fee Percentage	0.25%
Letter of Credit [Member]	'
Line of Credit Facility [Line Items]	'
Maximum Borrowing Capacity	40,000,000
Line of Credit Facility, Amount Outstanding	1,900,000
Swing Line Loan [Member]	'
Line of Credit Facility [Line Items]	'
Maximum Borrowing Capacity	$15,000,000
Minimum [Member] | Eurodollar [Member]	'
Line of Credit Facility [Line Items]	'
Interest Rate	1.25%
Minimum [Member] | Base Rate [Member]	'
Line of Credit Facility [Line Items]	'
Interest Rate	0.25%
Maximum [Member] | Eurodollar [Member]	'
Line of Credit Facility [Line Items]	'
Interest Rate	2.50%
Maximum [Member] | Base Rate [Member]	'
Line of Credit Facility [Line Items]	'
Interest Rate	1.50%

Debt_Additional_Details_Detail

Debt (Additional Details) (Details) (USD $)	Dec. 31, 2013		Dec. 31, 2012
	Acquisiton
	Tranche
Debt Instrument [Line Items]	'		'
Long-term Debt, Gross	$320,092,000		$357,576,000
Timberland Acquisitions	2		'
Number of Tranches Included in Term Loan	2		'
Term Loan Tranche	6,000,000		'
Term Loans, fixed rate 2.95% due 2017 and 3.70% due 2020 [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term Debt, Gross	12,000,000		12,000,000
Revenue bonds, fixed rate 5.9% to 7.75%, due 2014 through 2026 [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term Debt, Gross	108,335,000	[1]	144,985,000	[1]
Senior Notes [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term Debt, Gross	$150,000,000		$150,000,000
Interest Rate	7.50%		'
[1]	1 In 2013, $36.7 million of long-term debt was redeemed prior to its scheduled maturities. This included $8.4 million that was due later in 2013 and $21.0 million that was the total amount due in 2014.

Debt_Scheduled_Payments_Due_on

Debt (Scheduled Payments Due on Long-Term Debt) (Details) (USD $)	Dec. 31, 2013
In Thousands, unless otherwise specified
Long-term Debt, Fiscal Year Maturity [Abstract]	'
2014	$0
2015	22,500
2016	5,000
2017	11,000
2018	$14,250

Accounts_Payable_and_Accrued_L2

Accounts Payable and Accrued Liabilities Accounts Payable and Accrued Liabilites (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
In Thousands, unless otherwise specified
Accounts Payable and Accrued Liabilities [Abstract]	'	'	'
Wages, Salaries and Employee Benefits	$15,908	$14,992	'
Trade Accounts Payable	7,702	6,599	'
Taxes other than Income Taxes	6,247	6,363	'
Interest	4,018	4,250	'
Logging Related Expenses	1,600	3,456	'
Deferred Recreational Lease Income	880	899	'
Freight	802	426	'
Environmental Remediation	0	4,250	6,000
Book Overdrafts	2,920	3,875	'
Other	3,540	3,176	'
Accounts Payable and Accrued Liabilities, Total	$43,617	$48,286	'

Other_LongTerm_Obligations_Oth1

Other Long-Term Obligations Other Long-Term Obligations (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Other Long-term Debt [Abstract]	'	'
Employee Benefits and Related Liabilities	$15,423	$15,215
Other	6,930	7,242
Other Long-Term Obligations, Total	$22,353	$22,457

Financial_Instruments_and_Conc2

Financial Instruments and Concentration of Risk (Estimated Fair Values of Financial Instruments) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Level 1 [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Cash and short-term investments, Carrying Amount	$57,837	$80,062
Cash and short-term investments, Fair Value	57,837	80,062
Level 2 [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Long-term debt (including current installments on lont-term debt and fair value adjustments related to fair value swaps), Carrying Amount	320,092	357,576
Long-term debt (including current installments on lont-term debt and fair value adjustments related to fair value swaps), Fair Value	347,869	379,048
Level 2 [Member] | Interest rate contracts [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Net derivative asset related to interest rate swaps, Carrying Amount	1,830	2,952
Net derivative asset related to interest rate swaps, Fair Value	$1,830	$2,952

Financial_Instruments_and_Conc3

Financial Instruments and Concentration of Risk (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Derivatives, Fair Value [Line Items]	'	'
Debentures	$320,085,000	$356,748,000
Concentration Risk, Customer	'1	'1
Concentration Risk, Percentage	10.00%	10.00%
Interest Rate Swaps [Member]	'	'
Derivatives, Fair Value [Line Items]	'	'
Number of interest rate swap agreements	6	'
Notional amounts	46,750,000	'
Debentures	22,500,000	'
Medium-term notes	$24,250,000	'
Swaps fixed interest rate, minimum	6.95%	'
Swaps fixed interest rate, maximum	8.89%	'
LIBOR variable interest rate, minimum	4.74%	'
LIBOR variable interest rate, maximum	6.52%	'

Financial_Instruments_and_Conc4

Financial Instruments and Concentration of Risk (Fair Values of Derivative Instruments) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Derivatives, Fair Value [Line Items]	'	'
Fair Value of Derivative Assets	$1,830	$2,952
Derivatives designated as hedging instruments [Member]	'	'
Derivatives, Fair Value [Line Items]	'	'
Fair Value of Derivative Assets	1,830	2,952
Other non-current assets [Member] | Derivatives designated as hedging instruments [Member] | Interest rate contracts [Member]	'	'
Derivatives, Fair Value [Line Items]	'	'
Fair Value of Derivative Assets	$1,830	$2,952

Financial_Instruments_and_Conc5

Financial Instruments and Concentration of Risk (Effect Of Derivatives on the Consolidated Statement of Operations) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Derivatives designated as hedging instruments [Member] | Interest rate contracts [Member]	'		'		'
Derivative Instruments, Gain (Loss) [Line Items]	'		'		'
Net gain (loss) recognized in income	$960		$868		$1,027
Derivatives designated as hedging instruments [Member] | Interest expense [Member] | Interest rate contracts [Member]	'		'		'
Derivative Instruments, Gain (Loss) [Line Items]	'		'		'
Realized gain (loss) on hedging instrument/derivative	960	[1]	868	[1]	1,027	[1]
Derivatives not designated as hedging instruments [Member] | Lumber contracts [Member]	'		'		'
Derivative Instruments, Gain (Loss) [Line Items]	'		'		'
Net gain (loss) recognized in income	0		-876		4,520
Derivatives not designated as hedging instruments [Member] | Cost of goods sold [Member] | Lumber contracts [Member]	'		'		'
Derivative Instruments, Gain (Loss) [Line Items]	'		'		'
Unrealized gain (loss) on derivative	0		-480		3,356
Realized gain (loss) on hedging instrument/derivative	$0		($396)		$1,164
[1]	1 Realized gain on hedging instrument consists of net cash settlements and interest accruals on the interest rate swaps during the period.

Savings_Plans_Pension_Plans_an2

Savings Plans, Pension Plans and Other Postretirement Employee Benefits (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2014	Dec. 31, 2012	Dec. 31, 2012	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2014
				Pension Plans, Defined Benefit [Member]	Qualified Salaried Pension Plan [Member]	Qualified Non-Represented Pension Plan [Member]	Qualified Hourly Pension Plan [Member]	Trend rate grading ratably to an assumption in 2083 [Member]	Discretionary Funding [Member]	Scenario, Forecast [Member]
										Other Postretirement Benefit Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'	'	'	'	'	'	'
401(K) contributions by employer	$1,800,000	$1,600,000	$1,400,000	'	'	'	'	'	'	'
Pension Contributions	0	21,630,000	9,400,000	'	'	'	'	'	'	'
Contributions	'	'	'	'	9,300,000	5,500,000	6,800,000	'	11,900,000	'
Accumulated benefit obligation	387,400,000	438,600,000	'	'	'	'	'	'	'	'
Estimated net loss to be amortized from Accumulated Other Comprehensive Loss ino Net Periodic Benefit Cost	'	'	'	14,500,000	'	'	'	'	'	2,700,000
Estimated prior service cost to be amortized from Accumulated Other Comprehensive Loss ino Net Periodic Benefit Cost	'	'	'	700,000	'	'	'	'	'	9,600,000
Defined Benefit Plans, Estimated Future Employer Contributions in Next Fiscal Year	1,700,000	'	'	'	'	'	'	'	'	'
Non-Qualified Pension Plan, Estimated Payments in Next Fiscal Year	$1,800,000	'	'	'	'	'	'	'	'	'
Health care cost trend rate assumed for next fiscal year	7.70%	'	'	'	'	'	'	5.00%	'	'

Savings_Plans_Pension_Plans_an3

Savings Plans, Pension Plans and Other Postretirement Employee Benefits (Change in Benefit Obligation, Plan Assets and Funded Status for Company-Sponsored Benefit Plans and Obligations) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'
Fair Value of Plan Assets	$350,588	$345,633
Amounts recognized in the consolidated balance sheets [Abstract]	'	'
Current Liabilities	6,701	6,888
Noncurrent Liabilities	83,619	145,047
Pension Plans, Defined Benefit [Member]	'	'
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]	'	'
Benefit Obligation	445,535	418,251
Service Cost	5,318	5,238
Interest Cost	17,826	19,986
Plan Amendments	0	510
Actuarial Loss (Gain)	-41,178	38,329
Benefits Paid	-33,936	-36,779
Benefit Obligation	393,565	445,535
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'
Fair Value of Plan Assets	345,633	312,158
Actual Return on Plan Assets	37,157	46,905
Employer contributions and benefit payments	1,734	23,349
Fair Value of Plan Assets	350,588	345,633
Amounts recognized in the consolidated balance sheets [Abstract]	'	'
Current Liabilities	-1,772	-1,775
Noncurrent Liabilities	-41,205	-98,127
Funded Status of Plan	-42,977	-99,902
Other Postretirement Benefit Plans, Defined Benefit [Member]	'	'
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]	'	'
Benefit Obligation	52,033	65,195
Service Cost	94	284
Interest Cost	1,810	2,478
Plan Amendments	0	-6,045
Actuarial Loss (Gain)	-2,692	-4,878
Benefits Paid	-3,902	-5,001
Benefit Obligation	47,343	52,033
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'
Fair Value of Plan Assets	0	0
Actual Return on Plan Assets	0	0
Employer contributions and benefit payments	3,902	5,001
Fair Value of Plan Assets	0	0
Amounts recognized in the consolidated balance sheets [Abstract]	'	'
Current Liabilities	-4,929	-5,113
Noncurrent Liabilities	-42,414	-46,920
Funded Status of Plan	($47,343)	($52,033)

Savings_Plans_Pension_Plans_an4

Savings Plans, Pension Plans and Other Postretirement Employee Benefits (Long-Term Asset Allocation Ranges) (Details)	12 Months Ended
	Dec. 31, 2013
Maximum [Member]	'
Domestic and International Equities	60.00%
Fixed income securities	60.00%
Alternatives	15.00%
Cash	5.00%
Minimum [Member]	'
Domestic and International Equities	15.00%
Fixed income securities	35.00%
Alternatives	5.00%
Cash	0.00%

Savings_Plans_Pension_Plans_an5

Savings Plans, Pension Plans and Other Postretirement Employee Benefits (Weighted Average Asset Alllocations of the Pension Benefit Plans' Assets) (Details) (Pension Plans, Defined Benefit [Member])	Dec. 31, 2013	Dec. 31, 2012
Defined Benefit Plan, Actual Plan Asset Allocations	100.00%	100.00%
Domestic Equity Securities [Member]	'	'
Defined Benefit Plan, Actual Plan Asset Allocations	20.00%	22.00%
Debt Securities [Member]	'	'
Defined Benefit Plan, Actual Plan Asset Allocations	38.00%	36.00%
Global and International Equity Securities [Member]	'	'
Defined Benefit Plan, Actual Plan Asset Allocations	27.00%	28.00%
Other notes [Member]	'	'
Defined Benefit Plan, Actual Plan Asset Allocations	15.00%	14.00%

Savings_Plans_Pension_Plans_an6

Savings Plans, Pension Plans and Other Postretirement Employee Benefits (Fair Value Measurements) (Details) (USD $)	Dec. 31, 2013		Dec. 31, 2012
In Thousands, unless otherwise specified
Fair Value of Plan Assets, Before Payables Held Under Securities Lending Agreements	'		$350,439
Payable held under Security Lending Agreements	'		-4,806	[1]
Fair Value of Plan Assets	350,588		345,633
Cash and Cash Equivalents [Member]	'		'
Cash and Equivalents	9,673		2,085
Equity Securities [Member]	'		'
U.S. Large Cap	32,304	[2]	35,099	[2]
U.S. Small Mid Cap	19,053	[3]	21,516	[3]
International Companies	34,773		9,400
Mutual Funds [Member]	'		'
Mutual Funds	185,505	[4]	124,453	[4]
Percent Invested in High-Quality Intermediate and Long-Term Investment Grade Securities	50.00%		50.00%
Percent Invested in Diversified Portfolio of Fixed-Income Instruments of Varying Maturities	50.00%		50.00%
Investments [Member]	'		'
U.S. Small Mid Cap	'		19,803	[5]
Developed Markets	17,401	[6]	47,916	[7]
Emerging Markets	41,300	[8]	40,983	[9]
Hedge Funds [Member]	'		'
Hedge Funds	10,579	[10]	45,693	[11]
Percent Invested in Long/Short and Event-Driven Equity	37.00%		53.00%
Percent Invested in Long and Short Credit	24.00%		11.00%
Percent in Relative Value	11.00%		14.00%
Percent Invested in Fixed Income Relative Value	'		5.00%
Percent Invested in Distressed Debt	10.00%		4.00%
Defined Benefit Plan, Fair Value Investments, Hedge Funds, Percent Invested in Convertible Bond Hedging	6.00%		'
Percent in Other Investments	12.00%		13.00%
Securities Pledged as Collateral [Member]	'		'
Money Market Funds	'		1,499	[12]
Mortgage-backed Securities	'		1,992	[13]
Level 1 [Member]	'		'
Fair Value of Plan Assets, Before Payables Held Under Securities Lending Agreements	'		192,553
Payable held under Security Lending Agreements	'		-4,806	[1]
Fair Value of Plan Assets	281,308		187,747
Level 1 [Member] | Cash and Cash Equivalents [Member]	'		'
Cash and Equivalents	9,673		2,085
Level 1 [Member] | Equity Securities [Member]	'		'
U.S. Large Cap	32,304	[2]	35,099	[2]
U.S. Small Mid Cap	19,053	[3]	21,516	[3]
International Companies	34,773		9,400
Level 1 [Member] | Mutual Funds [Member]	'		'
Mutual Funds	185,505	[4]	124,453	[4]
Level 1 [Member] | Investments [Member]	'		'
U.S. Small Mid Cap	'		0	[5]
Developed Markets	0	[6]	0	[7]
Emerging Markets	0	[8]	0	[9]
Level 1 [Member] | Hedge Funds [Member]	'		'
Hedge Funds	0	[10]	0	[11]
Level 1 [Member] | Securities Pledged as Collateral [Member]	'		'
Money Market Funds	'		0	[12]
Mortgage-backed Securities	'		0	[13]
Level 2 [Member]	'		'
Fair Value of Plan Assets, Before Payables Held Under Securities Lending Agreements	'		112,193
Payable held under Security Lending Agreements	'		0	[1]
Fair Value of Plan Assets	58,701		112,193
Level 2 [Member] | Cash and Cash Equivalents [Member]	'		'
Cash and Equivalents	0		0
Level 2 [Member] | Equity Securities [Member]	'		'
U.S. Large Cap	0	[2]	0	[2]
U.S. Small Mid Cap	0	[3]	0	[3]
International Companies	0		0
Level 2 [Member] | Mutual Funds [Member]	'		'
Mutual Funds	0	[4]	0	[4]
Level 2 [Member] | Investments [Member]	'		'
U.S. Small Mid Cap	'		19,803	[5]
Developed Markets	17,401	[6]	47,916	[7]
Emerging Markets	41,300	[8]	40,983	[9]
Level 2 [Member] | Hedge Funds [Member]	'		'
Hedge Funds	0	[10]	0	[11]
Level 2 [Member] | Securities Pledged as Collateral [Member]	'		'
Money Market Funds	'		1,499	[12]
Mortgage-backed Securities	'		1,992	[13]
Fair Value, Inputs, Level 3 [Member]	'		'
Fair Value of Plan Assets, Before Payables Held Under Securities Lending Agreements	'		45,693
Payable held under Security Lending Agreements	'		0	[1]
Fair Value of Plan Assets	10,579		45,693
Fair Value, Inputs, Level 3 [Member] | Cash and Cash Equivalents [Member]	'		'
Cash and Equivalents	0		0
Fair Value, Inputs, Level 3 [Member] | Equity Securities [Member]	'		'
U.S. Large Cap	0	[2]	0	[2]
U.S. Small Mid Cap	0	[3]	0	[3]
International Companies	0		0
Fair Value, Inputs, Level 3 [Member] | Mutual Funds [Member]	'		'
Mutual Funds	0	[4]	0	[4]
Fair Value, Inputs, Level 3 [Member] | Investments [Member]	'		'
U.S. Small Mid Cap	'		0	[5]
Developed Markets	0	[6]	0	[7]
Emerging Markets	0	[8]	0	[9]
Fair Value, Inputs, Level 3 [Member] | Hedge Funds [Member]	'		'
Hedge Funds	10,579	[10]	45,693	[11]
Fair Value, Inputs, Level 3 [Member] | Securities Pledged as Collateral [Member]	'		'
Money Market Funds	'		0	[12]
Mortgage-backed Securities	'		$0	[13]
[1]	10 This category represents a payable under the securities lending agreements.
[2]	1 These are managed investments in US large cap equities that track the Russell 1000 Value index.
[3]	2 These are managed investments in US small/mid cap equities that track the Russell 2500 Growth index.
[4]	3 The mutual funds were 50% invested in high-quality intermediate and long-term investment grade securities and 50% invested in a diversified portfolio of fixed-income instruments of varying maturities, which may be represented by forwards or derivatives such as options, futures contracts or swap agreements and debt securities.
[5]	4 These are managed investments in US small/mid cap equities that track the Russell 2500 Value index.
[6]	4 These collective investments are invested in equity funds of developed markets outside of the US & Canada, that track the MSCI EAFE index.
[7]	5 These collective investments are invested in equity funds of developed markets outside of the US & Canada, that track the MSCI EAFE index.
[8]	5 These collective investments are invested in equity funds of emerging markets outside of the US & Canada, that track the MSCI Emerging Markets index.
[9]	6 These collective investments are invested in equity funds of emerging markets outside of the US & Canada, that track the MSCI Emerging Markets index.
[10]	6 The hedge funds are 37% invested in long/short and event-driven equity, 24% invested in long and short credit, 11% in relative value, 10% invested in distressed debt, 6% invested in convertible bond hedging, with the remaining 12% in other investments.
[11]	7 The hedge funds are 53% invested in long/short and event-driven equity, 11% invested in long and short credit, 14% in relative value, 5% invested in fixed income relative value, 4% invested in distressed debt, with the remaining 13% in other investments.
[12]	8 The money market holdings are invested in the Mount Vernon Securities Lending Trust Prime Portfolio.
[13]	9 The mortgage-backed securities are maintained in the U.S. Bank Illiquid Securities Liquidating Trust.

Savings_Plans_Pension_Plans_an7

Savings Plans, Pension Plans and Other Postretirement Employee Benefits (Summary of Changes in the Fair Value of the Plans' Level 3 Assest) (Details) (Hedge Funds [Member], USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Hedge Funds [Member]	'	'	'
Asset balance	$10,579	$45,693	$42,940
Sales and settlements	-34,500	0	'
Unrealized gain (losses) relating to assets still held at the reporting date	($614)	$2,753	'

Savings_Plans_Pension_Plans_an8

Savings Plans, Pension Plans and Other Postretirement Employee Benefits (Pre-Tax Components Of Net Periodic Cost (Benefit)) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Pension Plans, Defined Benefit [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Service cost	$5,318	$5,238	$4,456
Interest cost	17,826	19,986	21,325
Expected return on plan assets	-26,092	-28,755	-31,804
Curtailment credit	0	0	0
Amortization of prior service cost (credit)	779	770	684
Amortization of actuarial loss	19,929	15,356	9,916
Net periodic cost (benefit)	17,760	12,595	4,577
Other Postretirement Benefit Plans, Defined Benefit [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Service cost	94	284	446
Interest cost	1,810	2,478	3,486
Expected return on plan assets	0	0	0
Curtailment credit	0	-103	0
Amortization of prior service cost (credit)	-9,708	-9,343	-8,536
Amortization of actuarial loss	3,209	3,127	3,967
Net periodic cost (benefit)	($4,595)	($3,557)	($637)

Savings_Plans_Pension_Plans_an9

Savings Plans, Pension Plans and Other Postretirement Employee Benefits Saving Plans, Pension Plans and Other Postretirement Employee Benefits (Other Amounts Recognized in Consolidated Statements of Comprehensive Income) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Net amount at beginning of year	($140,898)	'	'
Taxes	21,424	-5,968	-21,960
Net amount arising during the period	33,510	-9,334	-34,347
Taxes	0	2,159	2,264
Net reclassifications during the period	42,178	-16	-27,127
Net amount at end of year	-98,720	-140,898	'
Pension Plans, Defined Benefit [Member]	'	'	'
Net amount at beginning of year	161,667	158,883	130,445
Net loss (gain)	-52,242	20,180	57,220
Prior service cost (credit)	0	510	0
Taxes	20,374	-8,069	-22,316
Net amount arising during the period	-31,868	12,621	34,904
Amortization of prior service (cost) credit	-779	-770	-684
Amortization of actuarial loss	-19,929	-15,356	-9,916
Taxes	8,076	6,289	4,134
Net reclassifications during the period	-12,632	-9,837	-6,466
Net amount at end of year	117,167	161,667	158,883
Other Postretirement Benefit Plans, Defined Benefit [Member]	'	'	'
Net amount at beginning of year	-20,769	-18,001	-16,690
Net loss (gain)	-2,692	-4,878	-913
Prior service cost (credit)	0	-5,942	-5,805
Taxes	1,050	4,260	2,620
Net amount arising during the period	-1,642	-6,560	-4,098
Amortization of prior service (cost) credit	9,708	9,343	8,536
Amortization of actuarial loss	-3,209	-3,127	-3,967
Taxes	-2,535	-2,424	-1,782
Net reclassifications during the period	3,964	3,792	2,787
Net amount at end of year	($18,447)	($20,769)	($18,001)

Recovered_Sheet1

Savings Plans, Pension Plans and Other Postretirement Employee Benefits Savings Plans, Pension Plans and Other Postretirement Employee Benefits (Amounts Recognized in AOCI on Consolidated Balance Sheet) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Net amount recognized	($98,720)	($140,898)	'	'
Pension Plans, Defined Benefit [Member]	'	'	'	'
Net Loss	115,404	159,429	'	'
Prior Service Cost (Credit)	1,763	2,238	'	'
Net amount recognized	117,167	161,667	158,883	130,445
Other Postretirement Benefit Plans, Defined Benefit [Member]	'	'	'	'
Net Loss	16,490	20,090	'	'
Prior Service Cost (Credit)	-34,937	-40,859	'	'
Net amount recognized	($18,447)	($20,769)	($18,001)	($16,690)

Recovered_Sheet2

Savings Plans, Pension Plans and Other Postretirement Employee Benefits (Schedule of Estimated Future Beneffit Payments) (Details) (USD $)	Dec. 31, 2013
In Thousands, unless otherwise specified
Other Postretirement Benefit Plans, Defined Benefit [Member]	'
2014	$4,929
2015	4,835
2016	4,699
2017	4,490
2018	4,248
2019 through 2022	17,734
Pension Plans, Defined Benefit [Member]	'
2014	30,033
2015	29,836
2016	29,566
2017	29,287
2018	29,064
2019 through 2022	$143,152

Recovered_Sheet3

Savings Plans, Pension Plans and Other Postretirement Employee Benefits (Weighted Average Assumptions Used to Determine the Benefit Obligation) (Details)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Other Postretirement Benefit Plans, Defined Benefit [Member]	'	'	'
Discount rate	4.45%	3.70%	4.85%
Rate of salaried compensation increase	0.00%	0.00%	0.00%
Pension Plans, Defined Benefit [Member]	'	'	'
Discount rate	5.10%	4.15%	4.95%
Rate of salaried compensation increase	3.00%	3.50%	3.50%

Recovered_Sheet4

Savings Plans, Pension Plans and Other Postretirement Employee Benefits (Weighted Average Assumptions used to Determne the Net Periodic Benefit (Cost)) (Details)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Other Postretirement Benefit Plans, Defined Benefit [Member]	'	'	'
Discount Rate	3.70%	4.85%	5.40%
Expected return on plan assets	0.00%	0.00%	0.00%
Rate of salaried compensation increase	0.00%	0.00%	0.00%
Pension Plans, Defined Benefit [Member]	'	'	'
Discount Rate	4.15%	4.95%	5.65%
Expected return on plan assets	8.00%	8.00%	8.50%
Rate of salaried compensation increase	3.50%	3.50%	4.00%

Recovered_Sheet5

Savings Plans, Pension Plans and Other Postretirement Employee Benefits (One Percent Point Change in Health Care Cost Trend Rate Effect) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013
Savings Plans, Pension Plans and Other Postretirement Employee Benefits [Abstract]	'
Effect on total service and interest cost components, 1% increase	$33
Effect on total service and interest cost components, 1% decrease	-29
Effect on OPEB obligations, 1% increase	519
Effect on OPEB obligations, 1% decrease	($475)

Commitments_and_Contingencies_1

Commitments and Contingencies (Future Minimum Rental Payments) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Commitments and Contingencies Disclosure [Abstract]	'	'	'
2014	$3,335,000	'	'
2015	3,012,000	'	'
2016	2,016,000	'	'
2017	1,052,000	'	'
2018	439,000	'	'
2019 and thereafter	131,000	'	'
Total	9,985,000	'	'
Rent Expense	$3,600,000	$3,100,000	$2,400,000

Commitments_and_Contingencies_2

Commitments and Contingencies (Environmental) (Details) (USD $)	3 Months Ended			12 Months Ended
	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Site Contingency [Line Items]	'	'	'	'	'	'
Loss Contingency Accrual, Carrying Value, Payments	$1,000,000	$1,750,000	$750,000	'	$1,750,000	'
Accrual, Present Value	'	'	'	0	4,250,000	6,000,000
Environmental remediation charge	'	'	'	3,522,000	0	1,200,000
Cash Payments	'	'	'	($7,772,000)	($1,750,000)	'

EquityBased_Compensation_Plans2

Equity-Based Compensation Plans (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Outandsing Stock Options, Date Fully Exercisable After	'2 years 0 months 0 days	'	'
Outstanding Stock Options, Number of Years Expiration Date is No Later Than	'10 years 0 months 0 days	'	'
Proceeds from Issuance of Common Stock	$1,904,000	$1,075,000	$1,430,000
Performance shares [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Unrecognized compensation cost	4,200,000	'	'
Weighted average period (in years)	'1 year 6 months 0 days	'	'
Restricted stock units [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Unrecognized compensation cost	800,000	'	'
Weighted average period (in years)	'1 year 0 months 0 days	'	'
Stock Options [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Proceeds from Issuance of Common Stock	$1,900,000	$1,100,000	$1,400,000
Minimum [Member] | Performance shares [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Number of Shares Actually Issued, as a Percent of the Amount Subject to the Performance Share Award	0.00%	'	'
Maximum [Member] | Performance shares [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Number of Shares Actually Issued, as a Percent of the Amount Subject to the Performance Share Award	200.00%	'	'
1995 Stock Incentive Plan [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Number Of Shares Originally Authorized	1,700,000	'	'
2000 Stock Incentive Plan [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Number Of Shares Originally Authorized	1,400,000	'	'
2005 Stock Incentive Plan [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Number Of Shares Originally Authorized	1,600,000	'	'
Number of Shares Authorized	269,000	'	'

EquityBased_Compensation_Plans3

Equity-Based Compensation Plans (Details Of Compensation Expense) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Employee equity-based compensation expense	$4,377	$4,067	$4,404
Director deferred compensation expense (income)	1,265	2,008	619
Actual tax benefit realized for tax deductions from equity-based plans	71	525	0
Performance shares [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Employee equity-based compensation expense	3,635	3,440	3,821
Restricted stock units [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Employee equity-based compensation expense	$742	$627	$583

EquityBased_Compensation_Plans4

Equity-Based Compensation Plans (Fair Value Of Performance Share Awards) (Details) (Performance shares [Member], USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Performance shares [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Shares granted (in shares)	83,111	85,028	77,767
Stock price as of valuation date (in dollars per share)	$45.31	$31.11	$39.10
Risk-free rate	0.40%	0.40%	1.26%
Fair value of a performance share (in dollars per share)	$62.78	$34.24	$55.84

EquityBased_Compensation_Plans5

Equity-Based Compensation Plans (Summary Of Outstanding Performance Share Awards / Restricted Stock Units) (Details) (USD $)	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Performance shares [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward]	'	'	'
Unvested shares outstanding at January 1, Shares	160,214	154,594	184,601
Granted (in shares)	83,111	85,028	77,767
Vested (in shares)	-71,861	-76,812	-103,960
Forfeited (in shares)	-15,650	-2,596	-3,814
Unvested shares outstanding at December 31, Shares	155,814	160,214	154,594
Unvested shares outstanding at January 1, Weighted Avg. Grant Date Fair Value (in dollars per share)	$44.50	$50.54	$38.45
Granted, Weighted Av.g Exercise Price (in dollars per share)	$62.78	$34.24	$55.84
Vested, Weighted Avg. Grant Date Fair Value (in dollars per share)	$55.84	$45.30	$33.32
Forfeited, Weighted Avg. Grant Date Fair Value (in dollars per share)	$47.32	$44.99	$42.77
Unvested shares outstanding at December 31, Weighted Avg. Grant Date Fair Value (in dollars per share)	$48.73	$44.50	$50.54
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Total Fair Value	$4,013	$3,480	$3,464
Aggregate Intrinsic Value	6,504	6,019	4,747
Restricted Stock Units (RSUs) [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward]	'	'	'
Unvested shares outstanding at January 1, Shares	40,219	36,359	41,715
Granted (in shares)	23,449	20,225	18,053
Vested (in shares)	-19,796	-14,861	-21,510
Forfeited (in shares)	-6,411	-1,504	-1,899
Unvested shares outstanding at December 31, Shares	37,461	40,219	36,359
Unvested shares outstanding at January 1, Weighted Avg. Grant Date Fair Value (in dollars per share)	$34.82	$35.60	$29.37
Granted, Weighted Av.g Exercise Price (in dollars per share)	$44.41	$31.53	$38.57
Vested, Weighted Avg. Grant Date Fair Value (in dollars per share)	$38.19	$32.41	$26.26
Forfeited, Weighted Avg. Grant Date Fair Value (in dollars per share)	$36.91	$33.36	$32.78
Unvested shares outstanding at December 31, Weighted Avg. Grant Date Fair Value (in dollars per share)	$38.69	$34.82	$35.60
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Total Fair Value	756	482	565
Aggregate Intrinsic Value	$2,511	$1,575	$1,131

EquityBased_Compensation_Plans6

Equity-Based Compensation Plans (Summary Of Outstanding Stock Options) (Details) (USD $)	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]	'	'	'
Outstanding at January 1, (in shares)	83,827	144,684	222,130
Shares exercised	-70,968	-60,857	-77,446
Outstanding and exercisable at December 31, (in shares)	12,859	83,827	144,684
Outstanding at January 1, Weighted Avg. Exercise Price (in dollars per share)	$27.46	$23.34	$21.64
Shares exercised, Weighted Avg. Exercise Price (in dollars per share)	$26.25	$17.66	$18.47
Outstanding and exercisable at December 31, Weighted Avg. Exercise Price (in dollars per share)	$30.92	$27.46	$23.34
Shares exercised, Aggregate Intrinsic Value	$1,423	$938	$1,496

EquityBased_Compensation_Plans7

Equity-Based Compensation Plans (Summary Of Outstanding Stock Options By Exercise Price Range) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]	'
Exercise Price	$30.92
Options outstanding (in shares)	12,859
Weighted Avg. Remaining Contractual Life (in years)	'0 years 11 months 1 day
Weighted Avg. Option Price (in dollars per share)	$30.92
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value	$139

Segment_Information_Summary_Of

Segment Information (Summary Of Information By Business Segment) (Details) (USD $)

3 Months Ended

12 Months Ended

In Thousands, unless otherwise specified

Dec. 31, 2013

Sep. 30, 2013

Jun. 30, 2013

Mar. 31, 2013

Dec. 31, 2012

Sep. 30, 2012

Jun. 30, 2012

Mar. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Segment Reporting Information [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Number of Reportable Segments

'

'

'

'

'

'

'

'

3

'

'

Segment Revenues

$139,955

$157,869

$133,212

$139,253

$143,299

$151,911

$117,540

$112,384

$570,289

$525,134

$497,421

Operating Income

'

'

'

'

'

'

'

'

84,466

59,403

44,411

Depreciation, depletion and amortization

'

'

'

'

'

'

'

'

26,962

26,247

29,092

Basis of real estate sold

'

'

'

'

'

'

'

'

2,904

5,048

10,219

Assets

680,530

'

'

'

718,897

'

'

'

680,530

718,897

746,220

Capital Expenditures

'

'

'

'

'

'

'

'

23,653

29,188

16,886

Operating Segments [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting Information [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Segment Revenues

'

'

'

'

'

'

'

'

630,403

575,488

548,578

Operating Income

'

'

'

'

'

'

'

'

149,676

121,994

100,853

Depreciation, depletion and amortization

'

'

'

'

'

'

'

'

24,353

23,020

25,277

Assets

592,292

'

'

'

577,461

'

'

'

592,292

577,461

579,440

Capital Expenditures

'

'

'

'

'

'

'

'

22,522

28,343

16,053

Resource [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting Information [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Segment Revenues

'

'

'

'

'

'

'

'

238,228

207,846

226,969

Operating Income

'

'

'

'

'

'

'

'

73,425

49,543

59,792

Depreciation, depletion and amortization

'

'

'

'

'

'

'

'

18,103

16,446

17,420

Real Estate [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting Information [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Segment Revenues

'

'

'

'

'

'

'

'

26,160

38,238

50,029

Operating Income

'

'

'

'

'

'

'

'

18,266

28,056

31,384

Depreciation, depletion and amortization

'

'

'

'

'

'

'

'

56

36

28

Basis of real estate sold

'

'

'

'

'

'

'

'

3,536

5,413

13,500

Resource and Real Estate [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting Information [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Assets

476,628

[1]

'

'

'

477,271

[1]

'

'

'

476,628

[1]

477,271

[1]

476,483

[1]

Capital Expenditures

'

'

'

'

'

'

'

'

13,509

[1]

23,916

[1]

12,003

[1]

Wood Products [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting Information [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Segment Revenues

'

'

'

'

'

'

'

'

366,015

329,404

271,580

Operating Income

'

'

'

'

'

'

'

'

58,892

45,456

7,267

Depreciation, depletion and amortization

'

'

'

'

'

'

'

'

6,194

6,538

7,829

Assets

115,664

'

'

'

100,190

'

'

'

115,664

100,190

102,957

Capital Expenditures

'

'

'

'

'

'

'

'

9,013

4,427

4,050

Eliminations and Adjustments [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting Information [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Segment Revenues

'

'

'

'

'

'

'

'

-60,114

[2]

-50,354

[2]

-51,157

[2]

Operating Income

'

'

'

'

'

'

'

'

-907

-1,061

2,410

Basis of real estate sold

'

'

'

'

'

'

'

'

-632

-365

-3,281

Corporate Elimination [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting Information [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Operating Income

'

'

'

'

'

'

'

'

-65,210

-62,591

-56,442

Depreciation, depletion and amortization

'

'

'

'

'

'

'

'

2,609

3,227

3,815

Assets

88,238

'

'

'

141,436

'

'

'

88,238

141,436

166,780

Capital Expenditures

'

'

'

'

'

'

'

'

$1,131

$845

$833

[1]

2 Assets are shown on a combined basis for the Resource and Real Estate segments, as we do not produce information separately for those segments for internal purposes.

[2]

1 Intersegment revenues for 2011-2013, which were based on prevailing market prices, consisted of logs sold by our Resource segment to the Wood Products segment.

Segment_Information_Segment_In

Segment Information Segment Information (Schedule of Revenue by Geographic Area) (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Revenues	$139,955	$157,869	$133,212	$139,253	$143,299	$151,911	$117,540	$112,384	$570,289	$525,134	$497,421
United States	'	'	'	'	'	'	'	'	'	'	'
Revenues	'	'	'	'	'	'	'	'	558,138	516,466	490,409
Canada	'	'	'	'	'	'	'	'	'	'	'
Revenues	'	'	'	'	'	'	'	'	9,645	5,180	4,646
Mexico	'	'	'	'	'	'	'	'	'	'	'
Revenues	'	'	'	'	'	'	'	'	$2,506	$3,488	$2,366

Asset_Impairment_Charge_Asset_

Asset Impairment Charge Asset Impairment Charge (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Asset Impairment Charges [Abstract]	'	'	'
Asset impairment charge	$0	$107	$1,180

Financial_Results_by_Quarter_F1

Financial Results by Quarter Financial Results by Quarter (Details) (USD $)	3 Months Ended																12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013		Sep. 30, 2013		Jun. 30, 2013		Mar. 31, 2013		Dec. 31, 2012		Sep. 30, 2012		Jun. 30, 2012		Mar. 31, 2012		Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Quarterly Financial Data [Abstract]	'		'		'		'		'		'		'		'		'	'	'
Revenues	$139,955		$157,869		$133,212		$139,253		$143,299		$151,911		$117,540		$112,384		$570,289	$525,134	$497,421
Operating Income	20,645		30,904		29,441		26,608		26,570		28,763		17,090		12,519		107,598	84,942	72,240
Net income (loss)	$13,721		$22,191		$19,182		$15,487		$13,864		$18,599		$5,080		$5,051		$70,581	$42,594	$40,266
Basic (in dollars per share)	$0.34	[1]	$0.55	[1]	$0.47	[1]	$0.38	[1]	$0.34	[1]	$0.46	[1]	$0.13	[1]	$0.13	[1]	$1.74	$1.06	$1
Diluted (in dollars per share)	$0.34	[1]	$0.54	[1]	$0.47	[1]	$0.38	[1]	$0.34	[1]	$0.46	[1]	$0.13	[1]	$0.13	[1]	$1.73	$1.05	$1
[1]	1 Per-share amounts are computed independently for each of the quarters presented. Therefore, the sum of the quarterly per-share amounts may not equal the total computed for the year.