Deltic Timber (DEL) 10-Q 2 May 14 2014 Q1 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	3 Months Ended
	Mar. 31, 2014
Document And Entity Information [Abstract]	'
Document Type	'10-Q
Amendment Flag	'false
Document Period End Date	31-Mar-14
Document Fiscal Year Focus	'2014
Document Fiscal Period Focus	'Q1
Trading Symbol	'DEL
Entity Registrant Name	'DELTIC TIMBER CORP
Entity Central Index Key	'0001022469
Current Fiscal Year End Date	'--12-31
Entity Filer Category	'Accelerated Filer
Entity Common Stock, Shares Outstanding	12,709,144

Consolidated_Balance_Sheets_Un

Consolidated Balance Sheets (Unaudited) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Current assets	'	'
Cash and cash equivalents	$6,507	$4,374
Trade accounts receivable, net of allowance for doubtful accounts of $141 and $172, respectively	11,102	7,331
Inventories	14,317	12,439
Prepaid expenses and other current assets	3,382	3,155
Total current assets	35,308	27,299
Investment in real estate held for development and sale	57,096	57,953
Timber and timberlands - net	355,392	248,833
Property, plant, and equipment - net	73,624	75,259
Deferred charges and other assets	2,058	2,000
Total assets	523,478	411,344
Current liabilities	'	'
Trade accounts payable	7,838	8,198
Accrued taxes other than income taxes	2,485	2,210
Income taxes payable	2,766	1,077
Deferred revenues and other accrued liabilities	8,184	10,330
Total current liabilities	21,273	21,815
Long-term debt	199,000	90,000
Deferred tax liabilities - net	7,495	7,514
Other noncurrent liabilities	25,058	25,743
Commitments and contingencies	'	'
Stockholders' equity	'	'
Cumulative preferred stock-$.01 par, authorized 20,000,000 shares, none issued	'	'
Common stock-$.01 par, authorized 50,000,000 shares, 12,813,879 shares issued	128	128
Capital in excess of par value	84,168	84,796
Retained earnings	193,360	189,720
Treasury stock	-4,366	-5,693
Accumulated other comprehensive loss	-2,638	-2,679
Total stockholders' equity	270,652	266,272
Total liabilities and stockholders' equity	$523,478	$411,344

Consolidated_Balance_Sheets_Un1

Consolidated Balance Sheets (Unaudited) (Parenthetical) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, except Share data, unless otherwise specified
Statement Of Financial Position [Abstract]	'	'
Trade accounts receivable, allowance for doubtful accounts	$141	$172
Cumulative preferred stock, par value	$0.01	$0.01
Cumulative preferred stock, shares authorized	20,000,000	20,000,000
Cumulative preferred stock, shares issued	0	0
Common stock, par value	$0.01	$0.01
Common stock, shares authorized	50,000,000	50,000,000
Common stock, shares issued	12,813,879	12,813,879

Consolidated_Statements_of_Inc

Consolidated Statements of Income (Unaudited) (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Income Statement [Abstract]	'	'
Net sales	$55,379	$41,563
Costs and expenses	'	'
Cost of sales	36,606	23,528
Depreciation, amortization, and cost of fee timber harvested	4,843	2,651
General and administrative expenses	5,123	4,920
Total costs and expenses	46,572	31,099
Gain on involuntary conversion	'	84
Operating income	8,807	10,548
Equity in earnings of Del-Tin Fiber	'	1,084
Interest income	2	3
Interest and other debt expense, net of capitalized interest	-1,175	-1,030
Other income/(expense)	61	-20
Income before income taxes	7,695	10,585
Income tax expense	-2,784	-3,811
Net income	$4,911	$6,774
Earnings per common share	'	'
Basic	$0.39	$0.53
Assuming dilution	$0.39	$0.53
Dividends declared per common share	$0.10	$0.10
Dividends paid per common share	$0.10	$0.10
Weighted average common shares outstanding (thousands)	'	'
Basic	12,557	12,563
Assuming dilution	12,606	12,604

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Income (Unaudited) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Statement Of Income And Comprehensive Income [Abstract]	'	'
Net income	$4,911	$6,774
Reclassification adjustment for gains/(losses) included in net income (net of tax):	'	'
Amortization of prior service cost	2	1
Amortization of actuarial loss	69	142
Amortization of plan amendment	-30	-30
Other comprehensive income	41	113
Comprehensive income	$4,952	$6,887

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (Unaudited) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Operating activities	'	'
Net income	$4,911	$6,774
Adjustments to reconcile net income to net cash provided by operating activities	'	'
Depreciation, amortization, and cost of fee timber harvested	4,843	2,651
Deferred income taxes	-316	548
Real estate development expenditures	-284	-191
Real estate costs recovered upon sale	1,039	539
Timberland costs recovered upon sale	81	139
Equity in earnings of Del-Tin Fiber	'	-1,084
Stock-based compensation expense	802	664
Net increase in liabilities for pension and other postretirement benefits	199	500
Net decrease in deferred compensation for stock-based liabilities	-601	-590
Increase in operating working capital other than cash and cash equivalents	-7,015	-443
Other - changes in assets and liabilities	45	-496
Net cash provided by operating activities	3,704	9,011
Investing activities	'	'
Capital expenditures requiring cash, excluding real estate development	-108,939	-11,833
Net change in purchased stumpage inventory	-362	-944
Advances to Del-Tin Fiber	'	-1,025
Repayments from Del-Tin Fiber	'	750
Net change in funds held by trustee	-125	7
Other - net	90	193
Net cash required by investing activities	-109,336	-12,852
Financing activities	'	'
Proceeds from borrowings	109,000	12,000
Treasury stock purchases	-8	-10
Common stock dividends paid	-1,271	-1,270
Proceeds from stock option exercises	54	750
Excess tax benefits from stock-based compensation expense	143	170
Other - net	-153	0
Net cash provided by financing activities	107,765	11,640
Net increase in cash and cash equivalents	2,133	7,799
Cash and cash equivalents at January 1	4,374	5,613
Cash and cash equivalents at March 31	$6,507	$13,412

Consolidated_Statements_of_Sto

Consolidated Statements of Stockholders' Equity (Unaudited) (USD $)	Total	Preferred stock [Member]	Common stock [Member]	Capital in excess of par value [Member]	Retained earnings [Member]	Treasury Stock [Member]	Accumulated other comprehensive loss [Member]
In Thousands
Balance at beginning of period at Dec. 31, 2012	'	'	$128	$82,597	$168,608	($5,000)	($14,103)
Exercise of stock options	'	'	'	124	'	'	'
Shares purchased - 115 and 134 shares, respectively	'	'	'	'	'	-10	'
Net income	6,774	'	'	'	6,774	'	'
Change in other comprehensive income net of tax	113	'	'	'	'	'	113
Stock-based compensation expense	'	'	'	664	'	'	'
Common stock dividends	'	'	'	'	-1,270	'	'
Restricted stock awards	-935	'	'	-935	'	'	'
Tax effect of stock awards	'	'	'	172	'	'	'
Forfeited restricted stock - none and 570 shares, respectively	'	'	'	41	'	-41	'
Shares issued for incentive plans - 29,989 and 43,998 shares, respectively	'	'	'	'	'	1,561	'
Balance at end of period at Mar. 31, 2013	239,423	'	128	82,663	174,112	-3,490	-13,990
Balance at beginning of period at Dec. 31, 2013	266,272	'	128	84,796	189,720	-5,693	-2,679
Exercise of stock options	'	'	'	9	'	'	'
Shares purchased - 115 and 134 shares, respectively	'	'	'	'	'	-8	'
Net income	4,911	'	'	'	4,911	'	'
Change in other comprehensive income net of tax	41	'	'	'	'	'	41
Stock-based compensation expense	'	'	'	802	'	'	'
Common stock dividends	'	'	'	'	-1,271	'	'
Restricted stock awards	-1,290	'	'	-1,290	'	'	'
Tax effect of stock awards	'	'	'	-149	'	'	'
Forfeited restricted stock - none and 570 shares, respectively	'	'	'	0	'	0	'
Shares issued for incentive plans - 29,989 and 43,998 shares, respectively	'	'	'	'	'	1,335	'
Balance at end of period at Mar. 31, 2014	$270,652	'	$128	$84,168	$193,360	($4,366)	($2,638)

Consolidated_Statements_of_Sto1

Consolidated Statements of Stockholders' Equity (Unaudited) (Parenthetical) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Statement Of Stockholders Equity [Abstract]	'	'
Cumulative preferred stock, par value	$0.01	$0.01
Cumulative preferred stock, shares authorized	20,000,000	20,000,000
Cumulative preferred stock, shares issued	0	0
Common stock, par value	$0.01	$0.01
Common stock, shares authorized	50,000,000	50,000,000
Common stock, shares issued	12,813,879	12,813,879
Treasury stock shares, balance at beginning of period	134,609	141,974
Treasury stock, shares purchased	115	134
Forfeited restricted stock	0	570
Treasury stock, shares issued for incentive plans	29,989	43,998
Treasury stock shares, balance at end of period	104,735	98,680

Accounting_Policies

Accounting Policies	3 Months Ended
	Mar. 31, 2014
Accounting Policies [Abstract]	'
Accounting Policies	'
	Note 1 – Accounting Policies
	Basis of Presentation
	The consolidated financial statements have been prepared by Deltic Timber Corporation (the “Company” or “Deltic”). Certain information and accounting policies and footnote disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States have been condensed or omitted pursuant to such rules and regulations of the Securities and Exchange Commission. Although management of the Company believes the disclosures contained herein are adequate to make the information presented not misleading, these consolidated financial statements should be read in conjunction with the consolidated financial statements and notes thereto included in the Company’s annual report on Form 10-K for the fiscal year ended December 31, 2013. Preparation of consolidated financial statements requires management to make estimates and assumptions. These estimates and assumptions affect reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.
	Management believes the accompanying consolidated financial statements contain all adjustments, including normal recurring accruals and adjustments, which in the opinion of management are necessary to present fairly its financial position as of March 31, 2014, and the results of its operations and cash flows for the three months ended March 31, 2014 and 2013. These consolidated financial statements are not necessarily indicative of results to be expected for the full year. The Company has evaluated subsequent events through the date the financial statements were issued.

Inventories

Inventories	3 Months Ended
	Mar. 31, 2014
Inventory Disclosure [Abstract]	'
Inventories	'
	Note 2 – Inventories
	Inventories at the balance sheet dates consisted of the following:
	(Thousands of dollars)		March 31,		Dec. 31,
			2014		2013
	Raw materials	- Logs	$	1,378		1,612
		- Del-Tin – wood fiber		370		440
	Finished goods	- Lumber		4,880		4,145
		- Medium density fiberboard (“MDF”)		4,024		3,110
		- MDF consigned to others		897		708
	Supplies			2,768		2,424
			$	14,317		12,439

Prepaid_Expenses_and_Other_Cur

Prepaid Expenses and Other Current Assets	3 Months Ended
	Mar. 31, 2014
Prepaid Expense and Other Assets, Current [Abstract]	'
Prepaid Expenses and Other Current Assets	'
	Note 3 – Prepaid Expenses and Other Current Assets
	Prepaid expenses and other current assets at the balance sheet dates consisted of the following:
	(Thousands of dollars)	March 31,		Dec. 31,
		2014		2013
	Short-term deferred tax assets	$	1,880		1,901
	Refundable income taxes		—		109
	Prepaid expenses		935		692
	Other current assets		567		453
		$	3,382		3,155

Business_Combinations

Business Combinations	3 Months Ended
	Mar. 31, 2014
Business Combinations [Abstract]	'
Business Combinations	'
	Note 4 – Business Combinations
	On April 1, 2013, the Company acquired the remaining 50 percent membership interest of Del-Tin Fiber L.L.C. (“Del-Tin Fiber”) for an agreed-upon amount of approximately $20,000,000, which was considered to be comprised of a cash payment of $5,170,000 and the value of 50 percent of the long-term debt. Del-Tin Fiber was an existing joint venture that operates an MDF manufacturing facility in El Dorado, Arkansas. The acquisition resulted in Deltic obtaining a controlling financial interest in Del-Tin Fiber due to the Company’s 100 percent ownership of the membership interest of Del-Tin Fiber. As a result, Deltic began treating Del-Tin Fiber as a consolidated subsidiary of the Company as of the acquisition date. Prior to the acquisition, the Company reported Del-Tin Fiber as an equity method investment.
	The table below summarizes the allocation of the purchase price to the fair value of assets and liabilities acquired on April 1, 2013, which was finalized in the fourth quarter of 2013.
	(Thousands of dollars)
	Accounts receivable		$	4,229
	Inventories			4,805
	Other current assets			360
	Property, plant, and equipment			40,960
	Intangible assets1			1,700
	Other assets			171
	Current liabilities			(1,653	)
	Deferred tax liabilities			(2,203	)
	Long-term liabilities			(29,000	)
	Net assets acquired		$	19,369
	1	The acquired intangible assets consist of internally developed software which is being amortized over three years.
	The results of Del-Tin Fiber’s operations have been included in the consolidated financial statements subsequent to the acquisition date and were included in the Company’s Manufacturing segment.
	The following unaudited supplemental pro forma financial information for the three months ended March 31, 2013 represents the results of operations of Deltic Timber Corporation as if the Del-Tin Fiber acquisition had occurred on January 1, 2013. This information is based on historical results of operations, adjusted for certain acquisition accounting adjustments, and does not purport to represent Deltic’s actual results of operation as if the acquisition transaction described above would have occurred as of January 1, 2013, nor is it necessarily indicative of future results.
	(Thousands of dollars, except per share amounts)		Three Months Ended
			31-Mar-13
	Net sales		$	59,129
	Net income			7,210
	Basic and diluted earnings per common share			0.57
	For additional information concerning the acquisition of Del-Tin Fiber, see Note 4 of the Notes to Consolidated Financial Statements included in the Company’s annual report on Form 10-K for the fiscal year ended December 31, 2013.

Timber_and_Timberlands

Timber and Timberlands	3 Months Ended
	Mar. 31, 2014
Other Assets, Noncurrent Disclosure [Abstract]	'
Timber and Timberlands	'
	Note 5 – Timber and Timberlands
	Timber and timberlands at the balance sheet dates consisted of the following:
	(Thousands of dollars)	March 31,			Dec. 31,
		2014			2013
	Purchased stumpage inventory	$	2,750			2,388
	Timberlands		150,966			102,609
	Fee timber		313,454			253,768
	Logging facilities		2,628			2,628
			469,798			361,393
	Less accumulated cost of fee timber harvested and facilities depreciation		(114,821	)		(113,056	)
	Strategic timber and timberlands		354,977			248,337
	Non-strategic timber and timberlands		415			496
		$	355,392			248,833
	During the first quarter of 2014, Deltic acquired approximately 64,500 acres of timber and timberland for $106,627,000.
	In 1999, the Company initiated a program to identify and sell non-strategic timberlands and use the sales proceeds to purchase pine timberlands that are strategic to its operations. In 2008, Deltic identified approximately 10,000 acres of non-strategic timberlands that existed within its timberlands base to be sold. Other non-strategic acreage exists within the Company’s land base, but Deltic has not completely identified the number of acres that fit within this category. As the Company identifies these acres and determines that they are either smaller tracts of pine timberlands that cannot be strategically managed or tracts of hardwood bottomland that cannot be converted into pine-growing acreage, they will be sold. As of March 31, 2014, approximately 840 acres of these lands were available for sale. Included in the Woodlands operating income are gains from sales of non-strategic timberland of $72,000 and $378,000 for the three months ended March 31, 2014 and 2013, respectively.

Property_Plant_and_Equipment

Property, Plant, and Equipment	3 Months Ended
	Mar. 31, 2014
Property Plant And Equipment [Abstract]	'
Property, Plant, and Equipment	'
	Note 6 – Property, Plant, and Equipment
	Property, plant, and equipment at the balance sheet dates consisted of the following:
	(Thousands of dollars)	March 31,			Dec. 31,
		2014			2013
	Land	$	947			947
	Land improvements		8,870			8,835
	Buildings and structures		22,659			22,599
	Machinery and equipment		147,066			145,741
			179,542			178,122
	Less accumulated depreciation		(105,918	)		(102,863	)
		$	73,624			75,259

Deferred_Revenues_and_Other_Ac

Deferred Revenues and Other Accrued Liabilities	3 Months Ended
	Mar. 31, 2014
Payables And Accruals [Abstract]	'
Deferred Revenues and Other Accrued Liabilities	'
	Note 7 – Deferred Revenues and Other Accrued Liabilities
	Deferred revenues and other accrued liabilities at the balance sheet dates consisted of the following:
	(Thousands of dollars)	March 31,		Dec. 31,
		2014		2013
	Deferred revenues – current	$	2,952		3,697
	Vacation accrual		1,335		1,290
	Deferred compensation		1,309		3,442
	All other current liabilities		2,588		1,901
		$	8,184		10,330

Other_Noncurrent_Liabilities

Other Noncurrent Liabilities	3 Months Ended
	Mar. 31, 2014
Payables And Accruals [Abstract]	'
Other Noncurrent Liabilities	'
	Note 8 – Other Noncurrent Liabilities
	Other noncurrent liabilities at the balance sheet dates consisted of the following:
	(Thousands of dollars)	March 31,		Dec. 31,
		2014		2013
	Accumulated postretirement benefit obligation	$	10,541		10,391
	Excess retirement plan		4,566		4,457
	Accrued pension liability		6,264		6,383
	Deferred revenue – long-term portion		602		649
	Uncertain tax positions liability		1,185		1,185
	Other noncurrent liabilities		1,900		2,678
		$	25,058		25,743

Income_Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2014
Income Tax Disclosure [Abstract]	'
Income Taxes	'
	Note 9 – Income Taxes
	The Company’s effective tax rate for the three months ended March 31, 2014, was 36 percent. The Company’s policy is to recognize interest expense related to unrecognized tax benefits in interest expense and penalties in other expenses. During the three months ended March 31, 2014, the Company recognized $46,000 in interest expense from these items. The Company had approximately $685,000 accrued in deferred revenues and other accrued liabilities for interest and penalties at March 31, 2014. If the Company were to prevail on all unrecognized tax benefits recorded on the balance sheet, approximately $776,000 would benefit the effective rate. The Company is no longer subject to U.S. federal and state examinations by tax authorities for years before 2010.

Employee_and_Retiree_Benefit_P

Employee and Retiree Benefit Plans	3 Months Ended
	Mar. 31, 2014
Compensation And Retirement Disclosure [Abstract]	'
Employee and Retiree Benefit Plans	'
	Note 10 – Employee and Retiree Benefit Plans
	Components of net periodic retirement expense and other postretirement benefits expense consisted of the following:
		Three Months Ended
		March 31,
	(Thousands of dollars)	2014			2013
	Funded qualified retirement plan
	Service cost	$	369			387
	Interest cost		460			389
	Expected return on plan assets		(573	)		(473	)
	Amortization of prior service cost		5			5
	Recognized actuarial loss		41			213
	Net retirement expense	$	302			521
	Unfunded nonqualified retirement plan
	Service cost	$	76			36
	Interest cost		93			48
	Amortization of prior service cost		(2	)		(3	)
	Recognized actuarial loss		73			19
	Net retirement expense	$	240			100
	Other postretirement benefits
	Service cost	$	105			113
	Interest cost		124			108
	Recognized actuarial loss		—			2
	Amortization of plan amendment		(50	)		(50	)
	Net other postretirement benefits expense	$	179			173
	The Company made contributions to its qualified plan of $375,000 during the first three months of 2014, and expects to continue to fund the plan at the same monthly level over the remainder of 2014. The expected long-term rate of return on pension plan assets is 7.50 percent.

Other_Comprehensive_Income_Dis

Other Comprehensive Income Disclosures	3 Months Ended
	Mar. 31, 2014
Equity [Abstract]	'
Other Comprehensive Income Disclosures	'
	Note 11 – Other Comprehensive Income Disclosures
	The following tables detail the changes in accumulated other comprehensive loss (“AOCL”) by component for the three months ended March 31, 2014 and 2013:
	Changes in Accumulated Other Comprehensive Loss by Component (Net of Tax)
	(Thousands of dollars)	Defined			Defined			Post			Total
		Benefit			Benefit			Retirement
		Funded			Unfunded			Benefit
		Retirement			Retirement			Plan
		Plan			Plan
	AOCL at January 1, 2014	$	(2,410	)		(482	)		213			(2,679	)
	Amounts reclassified from AOCL		28			43			(30	)		41
	Net current period other comprehensive income/(loss)		28			43			(30	)		41
	AOCL at March 31, 2014	$	(2,382	)		(439	)		183			(2,638	)
	(Thousands of dollars)	Defined			Defined			Post			Total
		Benefit			Benefit			Retirement
		Funded			Unfunded			Benefit
		Retirement			Retirement			Plan
		Plan			Plan
	AOCL at January 1, 2013	$	(9,552	)		(3,380	)		(1,171	)		(14,103	)
	Amounts reclassified from AOCL		132			10			(29	)		113
	Net current period other comprehensive income/(loss)		132			10			(29	)		113
	AOCL at March 31, 2013	$	(9,420	)		(3,370	)		(1,200	)		(13,990	)
	Reclassification Out of Accumulated Other Comprehensive Loss
	Details about AOCL Components
		Three Months Ended March 31, 2014
	(Thousands of dollars)	Defined			Defined			Post			Total
		Benefit			Benefit			Retirement
		Funded			Unfunded			Benefit
		Retirement			Retirement			Plan
		Plan			Plan
	Amortization of prior service costs	$	5			(2	)		—			3
	Amortization of actuarial losses		41			73			—			114
	Amortization of plan amendment		—			—			(50	)		(50	)
	Total before tax		46			71			(50	)		67
	Income tax expense		(18	)		(28	)		20			(26	)
	Total reclassifications – net of tax	$	28			43			(30	)		41
	Amounts in parentheses indicate expenses. These items are included in the computation of net periodic retirement and postretirement costs. See Note 10 – Employee and Retiree Benefit Plans.
		Three Months Ended March 31, 2013
	(Thousands of dollars)	Defined			Defined			Post			Total
		Benefit			Benefit			Retirement
		Funded			Unfunded			Benefit
		Retirement			Retirement			Plan
		Plan			Plan
	Amortization of prior service costs	$	5			(3	)		—			2
	Amortization of actuarial losses		213			19			2			234
	Amortization of plan amendment		—			—			(50	)		(50	)
	Total before tax		218			16			(48	)		186
	Income tax expense		(86	)		(6	)		19			(73	)
	Total reclassifications – net of tax	$	132			10			(29	)		113
	Amounts in parentheses indicate expenses. These items are included in the computation of net periodic retirement and postretirement costs. See Note 10 – Employee and Retiree Benefit Plans.
	Tax Effects by Component
		Three Months Ended March 31, 2014
	(Thousands of dollars)	Before			Tax			Net of
		Tax			(Expense)			Tax
		Amount			or Benefit			Amount
	Amortization of prior service costs	$	3			(1	)		2
	Amortization of actuarial losses		114			(45	)		69
	Amortization of plan amendment		(50	)		20			(30	)
		$	67			(26	)		41
		Three Months Ended March 31, 2013
	(Thousands of dollars)	Before			Tax			Net of
		Tax			(Expense)			Tax
		Amount			or Benefit			Amount
	Amortization of prior service costs	$	2			(1	)		1
Amortization of actuarial losses		234			(92	)		142
Amortization of plan amendment		(50	)		20			(30	)
	$	186			(73	)		113

StockBased_Compensation

Stock-Based Compensation	3 Months Ended
	Mar. 31, 2014
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]	'
Stock-Based Compensation	'
	Note 12 – Stock-Based Compensation
	The Consolidated Statements of Income for the three months ended March 31, 2014 and 2013, included $802,000 and $664,000, respectively, of stock-based compensation expense reflected in general and administrative expenses.
	Assumptions for the valuation of 2014 stock options and restricted stock performance units consisted of the following:
		2014
	Expected term of options (in years)		6.27
	Weighted expected volatility		37.38	%
	Dividend yield		0.55	%
	Risk-free interest rate – performance restricted shares		1.23	%
	Risk-free interest rate – options		2.99	%
	Stock price as of valuation date	$	63.21
	Restricted performance share valuation	$	80.56
	Grant date fair value – stock options	$	21.87
	Stock Options – A summary of stock options as of March 31, 2014, and changes during the three- month period then ended are presented below:
	Options	Shares			Weighted		Weighted		Aggregate
					Average		Average		Intrinsic
					Exercise		Remaining		Value
					Price		Contractual		$0
							Term (Years)
	Outstanding at January 1, 2014		131,456		$	59.64
	Granted		26,611			63.35
	Exercised		(1,077	)		49.89
	Expired		(460	)		36.61
	Outstanding at March 31, 2014		156,530		$	60.4		6.8	$	970
	Exercisable at March 31, 2014		92,329		$	56.18		5.4	$	905
	The aggregate intrinsic value in the table above is the sum of the amounts by which the quoted market price of the Company’s common stock exceeded the exercise price of the options at March 31, 2014, for those options for which the quoted market price was in excess of the exercise price. This amount changes over time based on changes in the fair market value of the Company’s stock. As of March 31, 2014, there was $1,424,000 of unrecognized compensation cost related to nonvested stock options. That cost is expected to be recognized over a weighted-average period of 2.3 years.
	Restricted Stock and Restricted Stock Units – A summary of nonvested restricted stock as of March 31, 2014, and changes during the three-month period then ended are presented below:
	Nonvested Restricted Stock	Shares			Weighted
					Average
					Grant-Date
					Fair Value
	Nonvested at January 1, 2014		79,591		$	62.31
	Granted		24,951			63.3
	Vested		(19,132	)		44.84
	Nonvested at March 31, 2014		85,410		$	66.51
	As of March 31, 2014, there was $3,523,000 of unrecognized compensation cost related to nonvested restricted stock. That cost is expected to be recognized over a weighted-average period of 2.5 years.
	Performance Units – A summary of nonvested restricted stock performance units as of March 31, 2014, and changes during the three months then ended are presented below:
	Nonvested Restricted Stock Performance Units	Shares			Weighted
					Average
					Grant-Date
					Fair Value
	Nonvested at January 1, 2014		52,625		$	80.87
	Granted		16,613			80.7
	Units not meeting vesting conditions		(12,652	)		58.66
	Nonvested at March 31, 2014		56,586		$	85.78
	As of March 31, 2014, there was $3,001,000 of unrecognized compensation cost related to nonvested restricted stock performance units. That cost is expected to be recognized over a weighted-average period of 2.5 years.

Contingencies

Contingencies	3 Months Ended
	Mar. 31, 2014
Commitments And Contingencies Disclosure [Abstract]	'
Contingencies	'
	Note 13 – Contingencies
	At various times, the Company may be involved in litigation incidental to its operations. Currently there are no material legal proceedings outstanding.

Fair_Value_of_Financial_Instru

Fair Value of Financial Instruments	3 Months Ended
	Mar. 31, 2014
Fair Value Disclosures [Abstract]	'
Fair Value of Financial Instruments	'
	Note 14 – Fair Value of Financial Instruments
	Fair Value Measurement Accounting establishes a fair value hierarchy based on the quality of inputs used to measure fair value, with Level 1 being the highest quality and Level 3 being the lowest quality. Level 1 inputs are quoted prices in active markets on identical assets or liabilities. Level 2 inputs are observable inputs other than quoted prices included in Level 1. Level 3 inputs are unobservable inputs which reflect assumptions about pricing by market participants.
	Following is a description of the valuation methodologies used for assets and liabilities measured at fair value.
	Nonqualified employee savings plan – Consists of mutual funds, which are valued at the net asset value of shares held by the plan at the balance sheet date, at quoted market prices.
	The fair value measurements for the Company’s financial liabilities accounted for at fair value on a recurring basis at March 31, 2014, are presented in the following table:
				Fair Value Measurements at Reporting Date Using:
		March 31,		Quoted Prices in		Significant		Significant
				Active  Markets		Observable		Unobservable
				for Identical		Inputs		Inputs
				Liabilities
				Inputs
	(Thousands of dollars)	2014		Level 1		Level 2		Level 3
	Liabilities
	Nonqualified employee savings plan	$	1,345		1,345		—		—
	Long-term debt, including current liabilities – The fair value is estimated by discounting the scheduled debt payment streams to present value based on market rates for which the Company’s debt could be valued.
	The following table presents the carrying amounts and estimated fair values of financial instruments at March 31, 2014 and 2013. The fair value of a financial instrument is the amount at which the instrument could be exchanged in a current transaction between willing parties. The table excludes financial instruments included in current assets and liabilities, except current maturities of long-term debt, all of which have fair values approximating carrying values.
		March 31, 2014				March 31, 2013
	(Thousands of dollars)	Carrying		Estimated		Carrying		Estimated
		Amount		Fair Value		Amount		Fair Value
	Financial liabilities
	Long-term debt, including current liabilities	$	199,000		203,218	$	75,000		80,028

Earnings_per_Common_Share

Earnings per Common Share	3 Months Ended
	Mar. 31, 2014
Earnings Per Share [Abstract]	'
Earnings per Common Share	'
	Note 15 – Earnings per Common Share
	The amounts used in computing earnings per share and the effect on income and weighted average number of shares outstanding of dilutive potential common stock consisted of the following:
		Three Months Ended
		March 31,
	(Thousands, except per share amounts)	2014		2013
	Net earnings allocated to common stock	$	4,859		6,706
	Net earnings allocated to participating securities		52		68
	Net income allocated to common stock and participating securities	$	4,911		6,774
	Weighted average number of common shares used in basic EPS		12,557		12,563
	Effect of dilutive stock awards		49		41
	Weighted average number of common shares and dilutive potential common stock used in EPS assuming dilution		12,606		12,604
	Earnings per common share
	Basic	$	0.39		0.53
	Assuming dilution	$	0.39		0.53
	Diluted earnings per common share is computed using the weighted-average number of shares determined for the basic earnings per common share computation plus the dilutive effect of common stock equivalents using the treasury stock method.
	The following table provides information about potentially dilutive securities that were outstanding but were not included in the computation of diluted earnings per share because they were anti-dilutive, or in the case of the restricted performance shares, did not meet the metrics established for awarding.
		Three Months Ended
		March 31,
		2014		2013
	Options		50,657		24,058
	Restricted performance shares		56,586		52,625

Supplemental_Cash_Flow_Disclos

Supplemental Cash Flow Disclosures	3 Months Ended
	Mar. 31, 2014
Supplemental Cash Flow Elements [Abstract]	'
Supplemental Cash Flow Disclosures	'
	Note 16 – Supplemental Cash Flow Disclosures
	Additional information concerning cash flows is as follows:
		Three Months Ended
		March 31,
	(Thousands of dollars)	2014			2013
	Income taxes paid in cash	$	1,158			—
	Interest paid		414			109
	Interest capitalized		(29	)		(9	)
	Non-cash investing and financing activities excluded from the statement of cash flows include:
		Three Months Ended
		March 31,
	(Thousands of dollars)	2014			2013
	Issuance of restricted stock	$	1,290			935
	Land exchanges and capital expenditures accrued, not paid		546			1,389
	(Increases)/decreases in working capital, other than cash and cash equivalents, consisted of the following:
		Three Months Ended
		March 31,
	(Thousands of dollars)	2014			2013
	Trade accounts receivable	$	(3,771	)		(2,186	)
	Inventories		(1,878	)		(722	)
	Prepaid expenses and other current assets		(261	)		(593	)
	Trade accounts payable		(907	)		635
	Accrued taxes other than income taxes		275			487
	Income taxes payable		1,689			2,967
	Deferred revenues and other accrued liabilities		(2,162	)		(1,031	)
		$	(7,015	)		(443	)

Business_Segments

Business Segments	3 Months Ended
	Mar. 31, 2014
Segment Reporting [Abstract]	'
Business Segments	'
	Note 17 – Business Segments
	Information about the Company’s business segments consisted of the following:
			Three Months Ended
			March 31,
	(Thousands of dollars)		2014			2013
	Net sales
	Woodlands		$	10,402			9,373
	Manufacturing2			46,540			34,108
	Real Estate			3,503			2,329
	Eliminations1			(5,066	)		(4,247	)
			$	55,379			41,563
	Income before income taxes
	Operating income
	Woodlands		$	5,313			4,634
	Manufacturing2			8,342			11,337
	Real Estate			153			(644	)
	Corporate			(4,826	)		(4,643	)
	Eliminations			(175	)		(136	)
	Operating income			8,807			10,548
	Equity in earnings of Del-Tin Fiber2			—			1,084
	Interest income			2			3
	Interest and other debt expense, net of capitalized interest			(1,175	)		(1,030	)
	Other income/(expense)			61			(20	)
			$	7,695			10,585
	Depreciation, amortization, and cost of fee timber harvested
	Woodlands		$	1,803			1,292
	Manufacturing2			2,937			1,250
	Real Estate			83			85
	Corporate			20			24
			$	4,843			2,651
	Capital expenditures
	Woodlands		$	108,044			10,279
	Manufacturing2			1,424			2,788
	Real Estate			298			342
	Corporate			3			4
			$	109,769			13,413
	1	Primarily intersegment sales of timber from Woodlands to Manufacturing.
	2	Del-Tin Fiber became a consolidated subsidiary, reported in the Manufacturing segment, upon acquisition of a controlling interest of its ownership effective April 1, 2013.

Accounting_Policies_Policies

Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2014
Accounting Policies [Abstract]	'
Basis of Presentation	'
	Basis of Presentation
	The consolidated financial statements have been prepared by Deltic Timber Corporation (the “Company” or “Deltic”). Certain information and accounting policies and footnote disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States have been condensed or omitted pursuant to such rules and regulations of the Securities and Exchange Commission. Although management of the Company believes the disclosures contained herein are adequate to make the information presented not misleading, these consolidated financial statements should be read in conjunction with the consolidated financial statements and notes thereto included in the Company’s annual report on Form 10-K for the fiscal year ended December 31, 2013. Preparation of consolidated financial statements requires management to make estimates and assumptions. These estimates and assumptions affect reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.
	Management believes the accompanying consolidated financial statements contain all adjustments, including normal recurring accruals and adjustments, which in the opinion of management are necessary to present fairly its financial position as of March 31, 2014, and the results of its operations and cash flows for the three months ended March 31, 2014 and 2013. These consolidated financial statements are not necessarily indicative of results to be expected for the full year. The Company has evaluated subsequent events through the date the financial statements were issued.

Inventories_Tables

Inventories (Tables)	3 Months Ended
	Mar. 31, 2014
Inventory Disclosure [Abstract]	'
Inventories	'
	Inventories at the balance sheet dates consisted of the following:
	(Thousands of dollars)		March 31,		Dec. 31,
			2014		2013
	Raw materials	- Logs	$	1,378		1,612
		- Del-Tin – wood fiber		370		440
	Finished goods	- Lumber		4,880		4,145
		- Medium density fiberboard (“MDF”)		4,024		3,110
		- MDF consigned to others		897		708
	Supplies			2,768		2,424
			$	14,317		12,439

Prepaid_Expenses_and_Other_Cur1

Prepaid Expenses and Other Current Assets (Tables)	3 Months Ended
	Mar. 31, 2014
Prepaid Expense and Other Assets, Current [Abstract]	'
Prepaid Expenses and Other Current Assets	'
	Prepaid expenses and other current assets at the balance sheet dates consisted of the following:
	(Thousands of dollars)	March 31,		Dec. 31,
		2014		2013
	Short-term deferred tax assets	$	1,880		1,901
	Refundable income taxes		—		109
	Prepaid expenses		935		692
	Other current assets		567		453
		$	3,382		3,155

Business_Combinations_Tables

Business Combinations (Tables)	3 Months Ended
	Mar. 31, 2014
Business Combinations [Abstract]	'
Purchase Price Allocated to Net Tangible and Intangible Assets	'
	The table below summarizes the allocation of the purchase price to the fair value of assets and liabilities acquired on April 1, 2013, which was finalized in the fourth quarter of 2013.
	(Thousands of dollars)
	Accounts receivable		$	4,229
	Inventories			4,805
	Other current assets			360
	Property, plant, and equipment			40,960
	Intangible assets1			1,700
	Other assets			171
	Current liabilities			(1,653	)
	Deferred tax liabilities			(2,203	)
	Long-term liabilities			(29,000	)
	Net assets acquired		$	19,369
	1	The acquired intangible assets consist of internally developed software which is being amortized over three years.
Summarizes Combined Results of Operations on Pro Forma Basis	'
	This information is based on historical results of operations, adjusted for certain acquisition accounting adjustments, and does not purport to represent Deltic’s actual results of operation as if the acquisition transaction described above would have occurred as of January 1, 2013, nor is it necessarily indicative of future results.
	(Thousands of dollars, except per share amounts)		Three Months Ended
			31-Mar-13
	Net sales		$	59,129
	Net income			7,210
	Basic and diluted earnings per common share			0.57

Timber_and_Timberlands_Tables

Timber and Timberlands (Tables)	3 Months Ended
	Mar. 31, 2014
Other Assets, Noncurrent Disclosure [Abstract]	'
Summary of Timber and Timberlands	'
	Timber and timberlands at the balance sheet dates consisted of the following:
	(Thousands of dollars)	March 31,			Dec. 31,
		2014			2013
	Purchased stumpage inventory	$	2,750			2,388
	Timberlands		150,966			102,609
	Fee timber		313,454			253,768
	Logging facilities		2,628			2,628
			469,798			361,393
	Less accumulated cost of fee timber harvested and facilities depreciation		(114,821	)		(113,056	)
	Strategic timber and timberlands		354,977			248,337
	Non-strategic timber and timberlands		415			496
		$	355,392			248,833

Property_Plant_and_Equipment_T

Property, Plant, and Equipment (Tables)	3 Months Ended
	Mar. 31, 2014
Property Plant And Equipment [Abstract]	'
Property, Plant, and Equipment	'
	Property, plant, and equipment at the balance sheet dates consisted of the following:
	(Thousands of dollars)	March 31,			Dec. 31,
		2014			2013
	Land	$	947			947
	Land improvements		8,870			8,835
	Buildings and structures		22,659			22,599
	Machinery and equipment		147,066			145,741
			179,542			178,122
	Less accumulated depreciation		(105,918	)		(102,863	)
		$	73,624			75,259

Deferred_Revenues_and_Other_Ac1

Deferred Revenues and Other Accrued Liabilities (Tables)	3 Months Ended
	Mar. 31, 2014
Payables And Accruals [Abstract]	'
Deferred Revenues and Other Accrued Liabilities	'
	Deferred revenues and other accrued liabilities at the balance sheet dates consisted of the following:
	(Thousands of dollars)	March 31,		Dec. 31,
		2014		2013
	Deferred revenues – current	$	2,952		3,697
	Vacation accrual		1,335		1,290
	Deferred compensation		1,309		3,442
	All other current liabilities		2,588		1,901
		$	8,184		10,330

Other_Noncurrent_Liabilities_T

Other Noncurrent Liabilities (Tables)	3 Months Ended
	Mar. 31, 2014
Payables And Accruals [Abstract]	'
Other Noncurrent Liabilities	'
	Other noncurrent liabilities at the balance sheet dates consisted of the following:
	(Thousands of dollars)	March 31,		Dec. 31,
		2014		2013
	Accumulated postretirement benefit obligation	$	10,541		10,391
	Excess retirement plan		4,566		4,457
	Accrued pension liability		6,264		6,383
	Deferred revenue – long-term portion		602		649
	Uncertain tax positions liability		1,185		1,185
	Other noncurrent liabilities		1,900		2,678
		$	25,058		25,743

Employee_and_Retiree_Benefit_P1

Employee and Retiree Benefit Plans (Tables)	3 Months Ended
	Mar. 31, 2014
Compensation And Retirement Disclosure [Abstract]	'
Retirement Expense and Other Postretirement Benefits Expense	'
	Components of net periodic retirement expense and other postretirement benefits expense consisted of the following:
		Three Months Ended
		March 31,
	(Thousands of dollars)	2014			2013
	Funded qualified retirement plan
	Service cost	$	369			387
	Interest cost		460			389
	Expected return on plan assets		(573	)		(473	)
	Amortization of prior service cost		5			5
	Recognized actuarial loss		41			213
	Net retirement expense	$	302			521
	Unfunded nonqualified retirement plan
	Service cost	$	76			36
	Interest cost		93			48
	Amortization of prior service cost		(2	)		(3	)
	Recognized actuarial loss		73			19
	Net retirement expense	$	240			100
	Other postretirement benefits
	Service cost	$	105			113
	Interest cost		124			108
	Recognized actuarial loss		—			2
	Amortization of plan amendment		(50	)		(50	)
	Net other postretirement benefits expense	$	179			173

Other_Comprehensive_Income_Dis1

Other Comprehensive Income Disclosures (Tables)	3 Months Ended
	Mar. 31, 2014
Equity [Abstract]	'
Changes in Accumulated Other Comprehensive Loss by Component (Net of Tax)	'
	Changes in Accumulated Other Comprehensive Loss by Component (Net of Tax)
	(Thousands of dollars)	Defined			Defined			Post			Total
		Benefit			Benefit			Retirement
		Funded			Unfunded			Benefit
		Retirement			Retirement			Plan
		Plan			Plan
	AOCL at January 1, 2014	$	(2,410	)		(482	)		213			(2,679	)
	Amounts reclassified from AOCL		28			43			(30	)		41
	Net current period other comprehensive income/(loss)		28			43			(30	)		41
	AOCL at March 31, 2014	$	(2,382	)		(439	)		183			(2,638	)
	(Thousands of dollars)	Defined			Defined			Post			Total
		Benefit			Benefit			Retirement
		Funded			Unfunded			Benefit
		Retirement			Retirement			Plan
		Plan			Plan
	AOCL at January 1, 2013	$	(9,552	)		(3,380	)		(1,171	)		(14,103	)
	Amounts reclassified from AOCL		132			10			(29	)		113
	Net current period other comprehensive income/(loss)		132			10			(29	)		113
	AOCL at March 31, 2013	$	(9,420	)		(3,370	)		(1,200	)		(13,990	)
Reclassification Out of Accumulated Other Comprehensive Loss	'
	Reclassification Out of Accumulated Other Comprehensive Loss
	Details about AOCL Components
		Three Months Ended March 31, 2014
	(Thousands of dollars)	Defined			Defined			Post			Total
		Benefit			Benefit			Retirement
		Funded			Unfunded			Benefit
		Retirement			Retirement			Plan
		Plan			Plan
	Amortization of prior service costs	$	5			(2	)		—			3
	Amortization of actuarial losses		41			73			—			114
	Amortization of plan amendment		—			—			(50	)		(50	)
	Total before tax		46			71			(50	)		67
	Income tax expense		(18	)		(28	)		20			(26	)
	Total reclassifications – net of tax	$	28			43			(30	)		41
	Amounts in parentheses indicate expenses. These items are included in the computation of net periodic retirement and postretirement costs. See Note 10 – Employee and Retiree Benefit Plans.
		Three Months Ended March 31, 2013
	(Thousands of dollars)	Defined			Defined			Post			Total
		Benefit			Benefit			Retirement
		Funded			Unfunded			Benefit
		Retirement			Retirement			Plan
		Plan			Plan
	Amortization of prior service costs	$	5			(3	)		—			2
	Amortization of actuarial losses		213			19			2			234
	Amortization of plan amendment		—			—			(50	)		(50	)
	Total before tax		218			16			(48	)		186
	Income tax expense		(86	)		(6	)		19			(73	)
	Total reclassifications – net of tax	$	132			10			(29	)		113
	Amounts in parentheses indicate expenses. These items are included in the computation of net periodic retirement and postretirement costs. See Note 10 – Employee and Retiree Benefit Plans.
Tax Effects by Component	'
	Tax Effects by Component
		Three Months Ended March 31, 2014
	(Thousands of dollars)	Before			Tax			Net of
		Tax			(Expense)			Tax
		Amount			or Benefit			Amount
	Amortization of prior service costs	$	3			(1	)		2
	Amortization of actuarial losses		114			(45	)		69
	Amortization of plan amendment		(50	)		20			(30	)
		$	67			(26	)		41
		Three Months Ended March 31, 2013
	(Thousands of dollars)	Before			Tax			Net of
		Tax			(Expense)			Tax
		Amount			or Benefit			Amount
	Amortization of prior service costs	$	2			(1	)		1
	Amortization of actuarial losses		234			(92	)		142
	Amortization of plan amendment		(50	)		20			(30	)
		$	186			(73	)		113

StockBased_Compensation_Tables

Stock-Based Compensation (Tables)	3 Months Ended
	Mar. 31, 2014
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]	'
Valuation of Stock Options and Restricted Stock Performance Units	'
	Assumptions for the valuation of 2014 stock options and restricted stock performance units consisted of the following:
		2014
	Expected term of options (in years)		6.27
	Weighted expected volatility		37.38	%
	Dividend yield		0.55	%
	Risk-free interest rate – performance restricted shares		1.23	%
	Risk-free interest rate – options		2.99	%
	Stock price as of valuation date	$	63.21
	Restricted performance share valuation	$	80.56
	Grant date fair value – stock options	$	21.87
Summary of Stock Options	'
	Stock Options – A summary of stock options as of March 31, 2014, and changes during the three- month period then ended are presented below:
	Options	Shares			Weighted		Weighted		Aggregate
					Average		Average		Intrinsic
					Exercise		Remaining		Value
					Price		Contractual		$0
							Term (Years)
	Outstanding at January 1, 2014		131,456		$	59.64
	Granted		26,611			63.35
	Exercised		(1,077	)		49.89
	Expired		(460	)		36.61
	Outstanding at March 31, 2014		156,530		$	60.4		6.8	$	970
	Exercisable at March 31, 2014		92,329		$	56.18		5.4	$	905
Summary of Nonvested Restricted Stock	'
	Restricted Stock and Restricted Stock Units – A summary of nonvested restricted stock as of March 31, 2014, and changes during the three-month period then ended are presented below:
	Nonvested Restricted Stock	Shares			Weighted
					Average
					Grant-Date
					Fair Value
	Nonvested at January 1, 2014		79,591		$	62.31
	Granted		24,951			63.3
	Vested		(19,132	)		44.84
	Nonvested at March 31, 2014		85,410		$	66.51
Summary of Nonvested Restricted Stock Performance Units	'
	Performance Units – A summary of nonvested restricted stock performance units as of March 31, 2014, and changes during the three months then ended are presented below:
	Nonvested Restricted Stock Performance Units	Shares			Weighted
					Average
					Grant-Date
					Fair Value
	Nonvested at January 1, 2014		52,625		$	80.87
	Granted		16,613			80.7
	Units not meeting vesting conditions		(12,652	)		58.66
	Nonvested at March 31, 2014		56,586		$	85.78

Fair_Value_of_Financial_Instru1

Fair Value of Financial Instruments (Tables)	3 Months Ended
	Mar. 31, 2014
Fair Value Disclosures [Abstract]	'
Fair Value Measurements for Financial Liabilities Accounted on a Recurring Basis	'
	The fair value measurements for the Company’s financial liabilities accounted for at fair value on a recurring basis at March 31, 2014, are presented in the following table:
				Fair Value Measurements at Reporting Date Using:
		March 31,		Quoted Prices in		Significant		Significant
				Active  Markets		Observable		Unobservable
				for Identical		Inputs		Inputs
				Liabilities
				Inputs
	(Thousands of dollars)	2014		Level 1		Level 2		Level 3
	Liabilities
	Nonqualified employee savings plan	$	1,345		1,345		—		—
Carrying Amounts and Estimated Fair Values of Financial Instruments	'
	The following table presents the carrying amounts and estimated fair values of financial instruments at March 31, 2014 and 2013. The fair value of a financial instrument is the amount at which the instrument could be exchanged in a current transaction between willing parties. The table excludes financial instruments included in current assets and liabilities, except current maturities of long-term debt, all of which have fair values approximating carrying values.
		March 31, 2014				March 31, 2013
	(Thousands of dollars)	Carrying		Estimated		Carrying		Estimated
		Amount		Fair Value		Amount		Fair Value
	Financial liabilities
	Long-term debt, including current liabilities	$	199,000		203,218	$	75,000		80,028

Earnings_per_Common_Share_Tabl

Earnings per Common Share (Tables)	3 Months Ended
	Mar. 31, 2014
Earnings Per Share [Abstract]	'
Computation of Earnings Per Share	'
	The amounts used in computing earnings per share and the effect on income and weighted average number of shares outstanding of dilutive potential common stock consisted of the following:
		Three Months Ended
		March 31,
	(Thousands, except per share amounts)	2014		2013
	Net earnings allocated to common stock	$	4,859		6,706
	Net earnings allocated to participating securities		52		68
	Net income allocated to common stock and participating securities	$	4,911		6,774
	Weighted average number of common shares used in basic EPS		12,557		12,563
	Effect of dilutive stock awards		49		41
	Weighted average number of common shares and dilutive potential common stock used in EPS assuming dilution		12,606		12,604
	Earnings per common share
	Basic	$	0.39		0.53
	Assuming dilution	$	0.39		0.53
Information about Potentially Dilutive Securities Outstanding	'
	The following table provides information about potentially dilutive securities that were outstanding but were not included in the computation of diluted earnings per share because they were anti-dilutive, or in the case of the restricted performance shares, did not meet the metrics established for awarding.
		Three Months Ended
		March 31,
		2014		2013
	Options		50,657		24,058
	Restricted performance shares		56,586		52,625

Supplemental_Cash_Flow_Disclos1

Supplemental Cash Flow Disclosures (Tables)	3 Months Ended
	Mar. 31, 2014
Supplemental Cash Flow Elements [Abstract]	'
Interest and Income Taxes Information Concerning Cash Flows	'
	Additional information concerning cash flows is as follows:
		Three Months Ended
		March 31,
	(Thousands of dollars)	2014			2013
	Income taxes paid in cash	$	1,158			—
	Interest paid		414			109
	Interest capitalized		(29	)		(9	)
Non-cash Investing and Financing Activities	'
	Non-cash investing and financing activities excluded from the statement of cash flows include:
		Three Months Ended
		March 31,
	(Thousands of dollars)	2014			2013
	Issuance of restricted stock	$	1,290			935
	Land exchanges and capital expenditures accrued, not paid		546			1,389
(Increases)/Decreases in Operating Working Capital, Other Than Cash and Cash Equivalents	'
	(Increases)/decreases in working capital, other than cash and cash equivalents, consisted of the following:
		Three Months Ended
		March 31,
	(Thousands of dollars)	2014			2013
	Trade accounts receivable	$	(3,771	)		(2,186	)
	Inventories		(1,878	)		(722	)
	Prepaid expenses and other current assets		(261	)		(593	)
	Trade accounts payable		(907	)		635
	Accrued taxes other than income taxes		275			487
	Income taxes payable		1,689			2,967
	Deferred revenues and other accrued liabilities		(2,162	)		(1,031	)
		$	(7,015	)		(443	)

Business_Segments_Tables

Business Segments (Tables)	3 Months Ended
	Mar. 31, 2014
Segment Reporting [Abstract]	'
Summary of Company's Business Segments	'
	Information about the Company’s business segments consisted of the following:
			Three Months Ended
			March 31,
	(Thousands of dollars)		2014			2013
	Net sales
	Woodlands		$	10,402			9,373
	Manufacturing2			46,540			34,108
	Real Estate			3,503			2,329
	Eliminations1			(5,066	)		(4,247	)
			$	55,379			41,563
	Income before income taxes
	Operating income
	Woodlands		$	5,313			4,634
	Manufacturing2			8,342			11,337
	Real Estate			153			(644	)
	Corporate			(4,826	)		(4,643	)
	Eliminations			(175	)		(136	)
	Operating income			8,807			10,548
	Equity in earnings of Del-Tin Fiber2			—			1,084
	Interest income			2			3
	Interest and other debt expense, net of capitalized interest			(1,175	)		(1,030	)
	Other income/(expense)			61			(20	)
			$	7,695			10,585
	Depreciation, amortization, and cost of fee timber harvested
	Woodlands		$	1,803			1,292
	Manufacturing2			2,937			1,250
	Real Estate			83			85
	Corporate			20			24
			$	4,843			2,651
	Capital expenditures
	Woodlands		$	108,044			10,279
	Manufacturing2			1,424			2,788
	Real Estate			298			342
	Corporate			3			4
			$	109,769			13,413
	1	Primarily intersegment sales of timber from Woodlands to Manufacturing.
	2	Del-Tin Fiber became a consolidated subsidiary, reported in the Manufacturing segment, upon acquisition of a controlling interest of its ownership effective April 1, 2013.

Inventories_Inventories_Detail

Inventories - Inventories (Detail) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Inventories	'	'
Supplies	$2,768	$2,424
Inventory	14,317	12,439
Logs [Member]	'	'
Inventories	'	'
Raw material	1,378	1,612
Del-Tin - wood fiber [Member]	'	'
Inventories	'	'
Raw material	370	440
Lumber [Member]	'	'
Inventories	'	'
Finished goods	4,880	4,145
Medium density fiberboard [Member]	'	'
Inventories	'	'
Finished goods	4,024	3,110
Finished goods	$897	$708

Prepaid_Expenses_and_Other_Cur2

Prepaid Expenses and Other Current Assets - Prepaid Expenses and Other Current Assets (Detail) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Prepaid Expense and Other Assets, Current [Abstract]	'	'
Short-term deferred tax assets	$1,880	$1,901
Refundable income taxes	'	109
Prepaid expenses	935	692
Other current assets	567	453
Prepaid expenses and other current assets	$3,382	$3,155

Business_Combinations_Addition

Business Combinations - Additional Information (Detail) (Del Tin Fiber [Member], USD $)	3 Months Ended
	Mar. 31, 2014
Del Tin Fiber [Member]	'
Business Acquisition [Line Items]	'
Percentage membership interest of Del-Tin Fiber LLC	50.00%
Total consideration	$20,000,000
Cash payment	$5,170,000
Percentage of company owing	100.00%

Business_Combinations_Purchase

Business Combinations - Purchase Price Allocated to Net Tangible and Intangible Assets (Detail) (Del Tin Fiber [Member], USD $)	Mar. 31, 2014
In Thousands, unless otherwise specified
Del Tin Fiber [Member]	'
Business Acquisition [Line Items]	'
Accounts receivable	$4,229
Inventories	4,805
Other current assets	360
Property, plant, and equipment	40,960
Intangible assets	1,700
Other assets	171
Current liabilities	-1,653
Deferred tax liabilities	-2,203
Long-term liabilities	-29,000
Net assets acquired	$19,369

Business_Combinations_Purchase1

Business Combinations - Purchase Price Allocated to Net Tangible and Intangible Assets (Parenthetical) (Detail) (Del Tin Fiber [Member], Internally developed software [Member])	3 Months Ended
	Mar. 31, 2014
Del Tin Fiber [Member] | Internally developed software [Member]	'
Business Acquisition [Line Items]	'
Acquired intangible assets useful life	'3 years

Business_Combinations_Summariz

Business Combinations - Summarizes Combined Results of Operations on Pro Forma Basis (Detail) (Del Tin Fiber [Member], USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2013
Del Tin Fiber [Member]	'
Business Acquisition [Line Items]	'
Net sales	$59,129
Net income	$7,210
Basic earnings per common share	$0.57
Diluted earnings per common share	$0.57

Timber_and_Timberlands_Summary

Timber and Timberlands - Summary of Timber and Timberlands (Detail) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Property, Plant and Equipment [Line Items]	'	'
Purchased stumpage inventory	$2,750	$2,388
Timberlands	150,966	102,609
Fee timber	313,454	253,768
Logging facilities	2,628	2,628
Gross	469,798	361,393
Less accumulated cost of fee timber harvested and facilities depreciation	-114,821	-113,056
Timber and timberlands - net	355,392	248,833
Strategic timber and timberlands [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Timber and timberlands - net	354,977	248,337
Non-strategic timber and timberlands [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Timber and timberlands - net	$415	$496

Timber_and_Timberlands_Additio

Timber and Timberlands - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2008
	acre		acre
Timber And Timberlands Textual [Abstract]	'	'	'
Timber and timberlands acquired	64,500	'	'
Payments to acquire timber and timberlands	$106,627,000	'	'
Acres of non- strategic timberlands	'	'	10,000
Acres of timber land available for sale	840	'	'
Gains from sales of non-strategic timberland	$72,000	$378,000	'

Property_Plant_and_Equipment_P

Property, Plant, and Equipment - Property, Plant, and Equipment (Detail) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Property, Plant and Equipment [Line Items]	'	'
Property, plant, and equipment, gross	$179,542	$178,122
Less accumulated depreciation	-105,918	-102,863
Property, plant, and equipment, net	73,624	75,259
Land [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Property, plant, and equipment, gross	947	947
Land improvements [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Property, plant, and equipment, gross	8,870	8,835
Buildings and structures [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Property, plant, and equipment, gross	22,659	22,599
Machinery and equipment [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Property, plant, and equipment, gross	$147,066	$145,741

Deferred_Revenues_and_Other_Ac2

Deferred Revenues and Other Accrued Liabilities - Deferred Revenues and Other Accrued Liabilities (Detail) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Deferred Revenue Disclosure [Abstract]	'	'
Deferred revenues - current	$2,952	$3,697
Vacation accrual	1,335	1,290
Deferred compensation	1,309	3,442
All other current liabilities	2,588	1,901
Deferred revenues and other accrued liabilities	$8,184	$10,330

Other_Noncurrent_Liabilities_O

Other Noncurrent Liabilities - Other Noncurrent Liabilities (Detail) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Other Liabilities Disclosure [Abstract]	'	'
Accumulated postretirement benefit obligation	$10,541	$10,391
Excess retirement plan	4,566	4,457
Accrued pension liability	6,264	6,383
Deferred revenue - long-term portion	602	649
Uncertain tax positions liability	1,185	1,185
Other noncurrent liabilities	1,900	2,678
Other noncurrent liabilities, net	$25,058	$25,743

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 31, 2014
Income Tax Disclosure [Abstract]	'
Company's effective income tax rate	36.00%
Interest expense	$46,000
Deferred revenues other accrued liabilities for interest and penalties	685,000
Unrecognized tax benefits	$776,000

Employee_and_Retiree_Benefit_P2

Employee and Retiree Benefit Plans - Retirement Expense and Other Postretirement Benefits Expense (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Funded Qualified Retirement Plan [Member]	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Service cost	$369	$387
Interest cost	460	389
Expected return on plan assets	-573	-473
Amortization of prior service cost	5	5
Recognized actuarial loss	41	213
Net periodic benefit cost	302	521
Unfunded Nonqualified Retirement Plan [Member]	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Service cost	76	36
Interest cost	93	48
Amortization of prior service cost	-2	-3
Recognized actuarial loss	73	19
Net periodic benefit cost	240	100
Other Postretirement Plans [Member]	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Service cost	105	113
Interest cost	124	108
Recognized actuarial loss	0	2
Amortization of plan amendment	-50	-50
Net periodic benefit cost	$179	$173

Employee_and_Retiree_Benefit_P3

Employee and Retiree Benefit Plans - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 31, 2014
Defined Benefit Pension Plans And Defined Benefit Postretirement Plans Disclosure [Abstract]	'
Employer contributions	$375,000
Percentage of expected long-term rate of return on pension plan	7.50%

Other_Comprehensive_Income_Dis2

Other Comprehensive Income Disclosures - Changes in Accumulated Other Comprehensive Loss by Component (Net of Tax) (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Accumulated Other Comprehensive Income (Loss) [Line Items]	'	'
Beginning Balance, January 1	($2,679)	($14,103)
Amounts reclassified from AOCL	41	113
Net current period other comprehensive income/(loss)	41	113
Ending Balance, March 31	-2,638	-13,990
Defined Benefit Funded Retirement Plan [Member]	'	'
Accumulated Other Comprehensive Income (Loss) [Line Items]	'	'
Beginning Balance, January 1	-2,410	-9,552
Amounts reclassified from AOCL	28	132
Net current period other comprehensive income/(loss)	28	132
Ending Balance, March 31	-2,382	-9,420
Defined Benefit Unfunded Retirement Plan [Member]	'	'
Accumulated Other Comprehensive Income (Loss) [Line Items]	'	'
Beginning Balance, January 1	-482	-3,380
Amounts reclassified from AOCL	43	10
Net current period other comprehensive income/(loss)	43	10
Ending Balance, March 31	-439	-3,370
Post Retirement Benefit Plan [Member]	'	'
Accumulated Other Comprehensive Income (Loss) [Line Items]	'	'
Beginning Balance, January 1	213	-1,171
Amounts reclassified from AOCL	-30	-29
Net current period other comprehensive income/(loss)	-30	-29
Ending Balance, March 31	$183	($1,200)

Other_Comprehensive_Income_Dis3

Other Comprehensive Income Disclosures - Reclassification Out of Accumulated Other Comprehensive Loss (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]	'	'
Amortization of prior service costs	$3	$2
Amortization of actuarial losses	114	234
Amortization of plan amendment	-50	-50
Total before tax	67	186
Income tax expense	-26	-73
Total reclassifications - net of tax	41	113
Defined Benefit Funded Retirement Plan [Member]	'	'
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]	'	'
Amortization of prior service costs	5	5
Amortization of actuarial losses	41	213
Total before tax	46	218
Income tax expense	-18	-86
Total reclassifications - net of tax	28	132
Defined Benefit Unfunded Retirement Plan [Member]	'	'
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]	'	'
Amortization of prior service costs	-2	-3
Amortization of actuarial losses	73	19
Total before tax	71	16
Income tax expense	-28	-6
Total reclassifications - net of tax	43	10
Post Retirement Benefit Plan [Member]	'	'
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]	'	'
Amortization of actuarial losses	0	2
Amortization of plan amendment	-50	-50
Total before tax	-50	-48
Income tax expense	20	19
Total reclassifications - net of tax	($30)	($29)

Other_Comprehensive_Income_Dis4

Other Comprehensive Income Disclosures - Tax Effects by Component (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Equity [Abstract]	'	'
Amortization of prior service costs, Before Tax Amount	$3	$2
Amortization of actuarial losses, Before Tax Amount	114	234
Amortization of plan amendment, Before tax amount	-50	-50
Total before tax	67	186
Amortization of prior service costs, Tax (Expenses) or benefits	-1	-1
Amortization of actuarial losses, Tax (Expenses) or benefits	-45	-92
Amortization of plan amendment, Tax (Expenses) or benefits	20	20
Total Tax (Expenses) or benefits	-26	-73
Amortization of prior service costs	2	1
Amortization of actuarial losses	69	142
Amortization of plan amendment, Net of Tax Amount	-30	-30
Total reclassifications - net of tax	$41	$113

StockBased_Compensation_Additi

Stock-Based Compensation - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]	'	'
Stock Based Compensation Expense	$802,000	$664,000
Stock Options [Member]	'	'
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]	'	'
Unrecognized compensation cost related to nonvested stock	1,424,000	'
Cost recognized over a weighted-average period	'2 years 3 months 18 days	'
Nonvested Restricted Stock [Member]	'	'
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]	'	'
Unrecognized compensation cost related to nonvested stock	3,523,000	'
Cost recognized over a weighted-average period	'2 years 6 months	'
Nonvested Restricted Stock Performance Units [Member]	'	'
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]	'	'
Unrecognized compensation cost related to nonvested stock	$3,001,000	'
Cost recognized over a weighted-average period	'2 years 6 months	'

StockBased_Compensation_Valuat

Stock-Based Compensation - Valuation of Stock Options and Restricted Stock Performance Units (Detail) (USD $)	3 Months Ended
	Mar. 31, 2014
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]	'
Expected term of options (in years)	'6 years 3 months 7 days
Weighted expected volatility	37.38%
Dividend yield	0.55%
Risk-free interest rate - performance restricted shares	1.23%
Risk-free interest rate - options	2.99%
Stock price as of valuation date	$63.21
Restricted performance share valuation	$80.56
Grant date fair value - stock options	$21.87

StockBased_Compensation_Summar

Stock-Based Compensation - Summary of Stock Options (Detail) (Stock Options [Member], USD $)	3 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2014
Stock Options [Member]	'
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]	'
Outstanding Shares, beginning balance	131,456
Shares, Granted	26,611
Shares, Exercised	-1,077
Shares, Expired	-460
Outstanding Shares, ending balance	156,530
Shares, Exercisable	92,329
Outstanding Weighted Average Exercise Price, beginning	$59.64
Weighted Average Exercise Price, Granted	$63.35
Weighted Average Exercise Price, Exercised	$49.89
Weighted Average Exercise Price, Expired	$36.61
Outstanding Weighted Average Exercise Price, ending	$60.40
Outstanding Weighted Average Exercise Price, Exercisable	$56.18
Outstanding Weighted Average Remaining Contractual Term (Years), Ending	'6 years 9 months 18 days
Weighted Average Remaining Contractual Term, Exercisable	'5 years 4 months 24 days
Outstanding Aggregate Intrinsic Value, Ending	$970
Aggregate Intrinsic Values, Exercisable	$905

StockBased_Compensation_Summar1

Stock-Based Compensation - Summary of Nonvested Restricted Stock (Detail) (USD $)	3 Months Ended
	Mar. 31, 2014
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]	'
Weighted Average Grant-Date Fair Value Nonvested, Granted	$80.56
Nonvested Restricted Stock [Member]	'
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]	'
Shares Nonvested, Beginning Balance	79,591
Shares Nonvested, Granted	24,951
Shares Nonvested, Vested	-19,132
Shares Nonvested, Ending Balance	85,410
Weighted Average Grant-Date Fair Value Nonvested, Beginning Balance	$62.31
Weighted Average Grant-Date Fair Value Nonvested, Granted	$63.30
Weighted Average Grant-Date Fair Value Nonvested, Vested	$44.84
Weighted Average Grant-Date Fair Value Nonvested, Ending Balance	$66.51

StockBased_Compensation_Summar2

Stock-Based Compensation - Summary of Nonvested Restricted Stock Performance Units (Detail) (USD $)	3 Months Ended
	Mar. 31, 2014
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]	'
Weighted Average Grant-Date Fair Value Nonvested, Granted	$80.56
Nonvested Restricted Stock Performance Units [Member]	'
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]	'
Shares Nonvested, Beginning Balance	52,625
Shares Nonvested, Granted	16,613
Shares Nonvested, Units not meeting vesting conditions	-12,652
Shares Nonvested, Ending Balance	56,586
Weighted Average Grant-Date Fair Value Nonvested, Beginning Balance	$80.87
Weighted Average Grant-Date Fair Value Nonvested, Granted	$80.70
Weighted Average Grant-Date Fair Value Nonvested, Units not meeting vesting conditions	$58.66
Weighted Average Grant-Date Fair Value Nonvested, Ending Balance	$85.78

Fair_Value_of_Financial_Instru2

Fair Value of Financial Instruments - Fair Value Measurements for Financial Liabilities Accounted on a Recurring Basis (Detail) (USD $)	Mar. 31, 2014
In Thousands, unless otherwise specified
Liabilities	'
Nonqualified employee savings plan	$1,345
Quoted Prices in Active Markets for Identical Liabilities Inputs Level 1 [Member]	'
Liabilities	'
Nonqualified employee savings plan	1,345
Significant Observable Inputs Level 2 [Member]	'
Liabilities	'
Nonqualified employee savings plan	0
Significant Unobservable Inputs Level 3 [Member]	'
Liabilities	'
Nonqualified employee savings plan	$0

Fair_Value_of_Financial_Instru3

Fair Value of Financial Instruments - Carrying Amounts and Estimated Fair Values of Financial Instruments (Detail) (USD $)	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2013
In Thousands, unless otherwise specified
Financial liabilities	'	'	'
Long-term debt, including current liabilities, Carrying Amount	$199,000	$90,000	$75,000
Long-term debt, including current liabilities, Estimated Fair Value	$203,218	'	$80,028

Earnings_Per_Common_Share_Comp

Earnings Per Common Share - Computation of Earnings Per Share (Detail) (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Earnings Per Share [Abstract]	'	'
Net earnings allocated to common stock	$4,859	$6,706
Net earnings allocated to participating securities	52	68
Net income allocated to common stock and participating securities	$4,911	$6,774
Weighted average number of common shares used in basic EPS	12,557	12,563
Effect of dilutive stock awards	49	41
Weighted average number of common shares and dilutive potential common stock used in EPS assuming dilution	12,606	12,604
Earnings per common share	'	'
Basic	$0.39	$0.53
Assuming dilution	$0.39	$0.53

Earnings_Per_Common_Share_Info

Earnings Per Common Share - Information about Potentially Dilutive Securities Outstanding (Detail)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Stock Options [Member]	'	'
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]	'	'
Anti-dilutive shares outstanding not included in the computation of diluted earnings per share	50,657	24,058
Restricted Performance Shares [Member]	'	'
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]	'	'
Anti-dilutive shares outstanding not included in the computation of diluted earnings per share	56,586	52,625

Supplemental_Cash_Flow_Disclos2

Supplemental Cash Flow Disclosures - Interest and Income Taxes Information Concerning Cash Flows (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Supplemental Cash Flow Information [Abstract]	'	'
Income taxes paid in cash	$1,158	$0
Interest paid	414	109
Interest capitalized	($29)	($9)

Supplemental_Cash_Flow_Disclos3

Supplemental Cash Flow Disclosures - Non-cash Investing and Financing Activities Excluded from Statement of Cash Flow (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Cash Flow Noncash Investing And Financing Activities Disclosure [Abstract]	'	'
Issuance of restricted stock	$1,290	$935
Land exchanges and capital expenditures accrued, not paid	$546	$1,389

Supplemental_Cash_Flow_Disclos4

Supplemental Cash Flow Disclosures - (Increases)/Decreases in Operating Working Capital Other Than Cash and Cash Equivalents (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Increase Decrease In Other Operating Assets And Liabilities Net [Abstract]	'	'
Trade accounts receivable	($3,771)	($2,186)
Inventories	-1,878	-722
Prepaid expenses and other current assets	-261	-593
Trade accounts payable	-907	635
Accrued taxes other than income taxes	275	487
Income taxes payable	1,689	2,967
Deferred revenues and other accrued liabilities	-2,162	-1,031
Other Current Assets and Liabilities, Net	($7,015)	($443)

Business_Segments_Summary_of_C

Business Segments - Summary of Company's Business Segments (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Net sales	'	'
Net sales	$55,379	$41,563
Operating income	'	'
Operating income	8,807	10,548
Equity in earnings of Del-Tin Fiber	'	1,084
Interest income	2	3
Interest and other debt expense, net of capitalized interest	-1,175	-1,030
Other income/(expense)	61	-20
Income before income taxes	7,695	10,585
Depreciation, amortization, and cost of fee timber harvested	'	'
Depreciation, amortization, and cost of fee timber harvested	4,843	2,651
Capital expenditures	'	'
Capital expenditures	109,769	13,413
Operating Segments [Member] | Woodlands [Member]	'	'
Net sales	'	'
Net sales	10,402	9,373
Operating income	'	'
Operating income	5,313	4,634
Depreciation, amortization, and cost of fee timber harvested	'	'
Depreciation, amortization, and cost of fee timber harvested	1,803	1,292
Capital expenditures	'	'
Capital expenditures	108,044	10,279
Operating Segments [Member] | Manufacturing [Member]	'	'
Net sales	'	'
Net sales	46,540	34,108
Operating income	'	'
Operating income	8,342	11,337
Depreciation, amortization, and cost of fee timber harvested	'	'
Depreciation, amortization, and cost of fee timber harvested	2,937	1,250
Capital expenditures	'	'
Capital expenditures	1,424	2,788
Operating Segments [Member] | Real Estate [Member]	'	'
Net sales	'	'
Net sales	3,503	2,329
Operating income	'	'
Operating income	153	-644
Depreciation, amortization, and cost of fee timber harvested	'	'
Depreciation, amortization, and cost of fee timber harvested	83	85
Capital expenditures	'	'
Capital expenditures	298	342
Operating Segments [Member] | Corporate [Member]	'	'
Operating income	'	'
Operating income	-4,826	-4,643
Depreciation, amortization, and cost of fee timber harvested	'	'
Depreciation, amortization, and cost of fee timber harvested	20	24
Capital expenditures	'	'
Capital expenditures	3	4
Eliminations [Member]	'	'
Net sales	'	'
Net sales	-5,066	-4,247
Operating income	'	'
Operating income	($175)	($136)