Simpson Manufacturing (SSD) 10-Q 7 May 15 2015 Q1 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	3 Months Ended
	Mar. 31, 2015
Document and Entity Information
Entity Registrant Name	SIMPSON MANUFACTURING CO INC /CA/
Entity Central Index Key	920371
Document Type	10-Q
Document Period End Date	31-Mar-15
Amendment Flag	FALSE
Current Fiscal Year End Date	-19
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding	49,359,823
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q1

Condensed_Consolidated_Balance

Condensed Consolidated Balance Sheets (USD $)	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014
In Thousands, unless otherwise specified
Current assets
Cash and cash equivalents	$233,587	$260,307	$211,988
Trade accounts receivable, net	117,316	92,015	114,159
Inventories	205,312	216,545	216,529
Deferred income taxes	12,666	14,662	12,998
Other current assets	19,565	20,789	16,073
Total current assets	588,446	604,318	571,747
Property, plant and equipment, net	205,009	207,027	207,457
Goodwill	122,923	123,881	129,433
Intangible assets, net	31,484	32,587	39,728
Other noncurrent assets	4,797	5,252	4,804
Total assets	952,659	973,065	953,169
Current liabilities
Line of credit and notes payable	0	18	83
Trade accounts payable	21,456	22,860	31,291
Accrued liabilities	46,261	56,078	48,946
Accrued profit sharing trust contributions	1,960	5,384	2,005
Accrued cash profit sharing and commissions	7,131	6,039	8,105
Accrued workers’ compensation	4,479	4,101	5,119
Total current liabilities	81,287	94,480	95,549
Deferred income tax and other long-term liabilities	16,082	15,120	10,111
Total liabilities	97,369	109,600	105,660
Commitments and contingencies (Note 7)
Stockholders’ equity
Common stock, at par value	493	489	489
Additional paid-in capital	226,007	220,982	208,870
Retained earnings	652,298	649,174	621,260
Accumulated other comprehensive income (loss)	-23,508	-7,180	16,890
Total stockholders’ equity	855,290	863,465	847,509
Total liabilities and stockholders’ equity	$952,659	$973,065	$953,169

Condensed_Consolidated_Stateme

Condensed Consolidated Statements of Operations (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Income Statement [Abstract]
Net sales	$176,491	$168,288
Cost of sales	98,993	90,526
Gross profit	77,498	77,762
Operating expenses:
Research and development and other engineering	10,197	9,700
Selling	22,607	21,819
General and administrative	28,433	26,922
Gain on sale of assets	-16	-285
Total operating expenses	61,221	58,156
Income from operations	16,277	19,606
Interest (expense) income, net	-35	85
Income before taxes	16,242	19,691
Provision for income taxes	6,191	7,604
Net income	$10,051	$12,087
Earnings per common share:
Basic (in dollars per share)	$0.20	$0.25
Diluted (in dollars per share)	$0.20	$0.25
Number of shares outstanding
Basic (in shares)	49,208	48,899
Diluted (in shares)	49,408	49,065
Cash dividends declared per common share (in dollars per share)	$0.14	$0.13

Condensed_Consolidated_Stateme1

Condensed Consolidated Statements of Comprehensive Income (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Statement of Comprehensive Income [Abstract]
Net income	$10,051	$12,087
Other comprehensive loss
Translation adjustment, net of tax benefit (expense) of ($72) and $11, respectively	-16,328	-1,196
Comprehensive income (loss)	($6,277)	$10,891

Condensed_Consolidated_Stateme2

Condensed Consolidated Statements of Comprehensive Income (Parenthetical) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Statement of Comprehensive Income [Abstract]
Translation adjustment, tax (expense) benefit	($72)	$11

Condensed_Consolidated_Stateme3

Condensed Consolidated Statements of Stockholders' Equity (USD $)	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Treasury Stock
In Thousands, unless otherwise specified
Balance at Dec. 31, 2013	$841,279	$486	$207,418	$615,289	$18,086
Balance (in shares) at Dec. 31, 2013		48,712
Increase (Decrease) in Stockholders' Equity
Net income	12,087			12,087
Translation adjustment, net of tax	-1,196				-1,196
Stock options exercised	1,769	1	1,768
Stock options exercised (in shares)		62
Stock-based compensation	2,379		2,379
Tax effect of options exercised	-135		-135
Shares issued from release of Restricted Stock Units	-2,960	2	-2,962
Shares issued from release of Restricted Stock Units (in shares)		153
Cash dividends declared on common stock, $0.140, $0.420, and $0.125 per share for the period ended March 31, 2015, December 31, 2014, and March 31, 2014 respectively	-6,116			-6,116
Common stock issued at $34.32, $0, and $35.87 per share for stock bonus for the period ended March 31, 2015, December 31, 2014, and March 31, 2014, respectively	402		402
Common stock issued (in shares)		11
Balance at Mar. 31, 2014	847,509	489	208,870	621,260	16,890	0
Balance (in shares) at Mar. 31, 2014		48,938
Increase (Decrease) in Stockholders' Equity
Net income	51,444			51,444
Translation adjustment, net of tax	-23,700				-23,700
Pension adjustment, net of tax	-370				-370
Stock options exercised	2,813	1	2,812
Stock options exercised (in shares)		99
Stock-based compensation	9,975		9,975
Tax effect of options exercised	-133		-133
Shares issued from release of Restricted Stock Units	-542	0	-542
Shares issued from release of Restricted Stock Units (in shares)		24
Repurchase of common stock (in shares)		-95
Repurchase of common stock	-2,981					-2,981
Retirement of common stock		-1		-2,980		2,981
Cash dividends declared on common stock, $0.140, $0.420, and $0.125 per share for the period ended March 31, 2015, December 31, 2014, and March 31, 2014 respectively	-20,550			-20,550
Balance at Dec. 31, 2014	863,465	489	220,982	649,174	-7,180
Balance (in shares) at Dec. 31, 2014		48,966
Increase (Decrease) in Stockholders' Equity
Net income	10,051			10,051
Translation adjustment, net of tax	-16,328				-16,328
Stock options exercised	5,484	2	5,482
Stock options exercised (in shares)		187
Stock-based compensation	2,784		2,784
Tax effect of options exercised	-184		-184
Shares issued from release of Restricted Stock Units	-3,607	2	-3,609
Shares issued from release of Restricted Stock Units (in shares)		191
Cash dividends declared on common stock, $0.140, $0.420, and $0.125 per share for the period ended March 31, 2015, December 31, 2014, and March 31, 2014 respectively	-6,927			-6,927
Common stock issued at $34.32, $0, and $35.87 per share for stock bonus for the period ended March 31, 2015, December 31, 2014, and March 31, 2014, respectively	552		552
Common stock issued (in shares)		16
Balance at Mar. 31, 2015	$855,290	$493	$226,007	$652,298	($23,508)	$0
Balance (in shares) at Mar. 31, 2015		49,360

Condensed_Consolidated_Stateme4

Condensed Consolidated Statements of Stockholders' Equity (Parenthetical) (USD $)	3 Months Ended		9 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Statement of Stockholders' Equity [Abstract]
Cash dividends declared per common share (in dollars per share)	$0.14	$0.13	$0.42
Common stock issued per share for stock bonus (in dollars per share)	$34.32	$35.87	$0

Condensed_Consolidated_Stateme5

Condensed Consolidated Statements of Cash Flows (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Cash flows from operating activities
Net income	$10,051	$12,087
Adjustments to reconcile net income to net cash used by operating activities:
Gain on sale of assets	-15	-285
Depreciation and amortization	7,418	7,684
Gain on contingent consideration adjustment	-245	0
Deferred income taxes	2,593	1,651
Noncash compensation related to stock plans	3,295	2,657
Excess tax benefit of options exercised and restricted stock units vested	-58	-8
Provision for doubtful accounts	-50	-53
Changes in operating assets and liabilities, net of acquisitions:
Trade accounts receivable	-27,615	-24,220
Inventories	7,515	-19,128
Trade accounts payable	-1,590	-3,403
Income taxes payable	1,740	4,140
Accrued profit sharing trust contributions	-3,421	-3,770
Accrued cash profit sharing and commissions	1,179	2,057
Other current assets	-1,101	-2,977
Accrued liabilities	-11,295	-5,022
Long-term liabilities	93	-950
Accrued workers’ compensation	377	528
Other noncurrent assets	871	54
Net cash used in operating activities	-10,258	-28,958
Cash flows from investing activities
Capital expenditures	-6,369	-4,193
Asset acquisitions, net of cash acquired	-779	0
Proceeds from sale of property and equipment	25	451
Loan repayment by customer	243	0
Net cash used in investing activities	-6,880	-3,742
Cash flows from financing activities
Deferred and contingent consideration paid for asset acquisition	-1,177	-1,294
Repayment of debt and line of credit borrowings	-17	-20
Issuance of common stock	5,484	1,769
Excess tax benefit of options exercised and restricted stock units vested	58	8
Dividends paid	-6,858	-6,089
Net cash used in financing activities	-2,510	-5,626
Effect of exchange rate changes on cash and cash equivalents	-7,072	-894
Net decrease in cash and cash equivalents	-26,720	-39,220
Cash and cash equivalents at beginning of period	260,307	251,208
Cash and cash equivalents at end of period	233,587	211,988
Noncash activity during the period
Noncash capital expenditures	830	406
Dividends declared but not paid	6,927	6,116
Issuance of Company’s common stock for compensation	$552	$402

Basis_of_Presentation

Basis of Presentation	3 Months Ended
	Mar. 31, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation
	Principles of Consolidation
	The condensed consolidated financial statements include the accounts of Simpson Manufacturing Co., Inc. and its subsidiaries (the “Company”). Investments in 50% or less owned affiliates are accounted for using either the cost or the equity method. All significant intercompany transactions have been eliminated.
	Interim Period Reporting
	The accompanying unaudited interim condensed consolidated financial statements have been prepared pursuant to the rules and regulations for reporting on Form 10-Q. Accordingly, certain information and footnotes required by accounting principles generally accepted in the United States of America (“GAAP”) have been condensed or omitted. These interim statements should be read in conjunction with the audited consolidated financial statements and the notes thereto included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2014.
	The unaudited quarterly condensed consolidated financial statements have been prepared on the same basis as the audited annual consolidated financial statements and, in the opinion of management, contain all adjustments (consisting of only normal recurring adjustments) necessary to state fairly the financial information set forth therein, in accordance with GAAP. The year-end condensed consolidated balance sheet data were derived from audited financial statements, but do not include all disclosures required by GAAP. The Company’s quarterly results fluctuate. As a result, the Company believes the results of operations for the interim period presented are not necessarily indicative of the results to be expected for any future period.
	Out-of-Period Adjustment
	In the first quarter of 2014, the Company recorded an out-of-period adjustment, which increased gross profit, income from operations and net income by $2.3 million, $2.0 million and $1.3 million, respectively. The adjustment resulted from an over-statement of prior periods' workers compensation expense, net of cash profit sharing expense, and was not material to the first quarter of 2014 or any prior period's financial statements.
	Revenue Recognition
	The Company recognizes revenue when the earnings process is complete, net of applicable provision for discounts, returns and incentives, whether actual or estimated, based on the Company’s experience. This generally occurs when products are shipped to the customer in accordance with the sales agreement or purchase order, ownership and risk of loss pass to the customer, collectability is reasonably assured and pricing is fixed or determinable. The Company’s general shipping terms are F.O.B. shipping point, and title is transferred and revenue is recognized when the products are shipped to customers. When the Company sells F.O.B. destination point, title is transferred and the Company recognizes revenue on delivery or customer acceptance, depending on terms of the sales agreement. Service sales, representing after-market repair and maintenance, engineering activities, software license sales and services and lease income, though significantly less than 1% of net sales and not material to the condensed consolidated financial statements, are recognized as the services are completed or the software products and services are delivered. If actual costs of sales returns, incentives and discounts were to significantly exceed the recorded estimated allowance, the Company’s sales would be adversely affected.
	Net Earnings Per Common Share
	Basic earnings per common share are computed based on the weighted-average number of common shares outstanding. Potentially dilutive securities, using the treasury stock method, are included in the diluted per-share calculations for all periods when the effect of their inclusion is dilutive.
	The following is a reconciliation of basic earnings per common share to diluted earnings per share:
		Three Months Ended March 31,
	(in thousands, except per share amounts)	2015			2014
	Net income available to common stockholders	$	10,051		$	12,087
	Basic weighted-average shares outstanding	49,208			48,899
	Dilutive effect of potential common stock equivalents — stock options and restricted stock units	200			166
	Diluted weighted-average shares outstanding	49,408			49,065
	Earnings per common share:
	Basic	$	0.2		$	0.25
	Diluted	$	0.2		$	0.25
	Potentially dilutive securities excluded from earnings per diluted share because their effect is anti-dilutive	—			—
	Accounting for Stock-Based Compensation
	With the approval of the Company’s stockholders on April 26, 2011, the Company adopted the Simpson Manufacturing Co., Inc. 2011 Incentive Plan (the “Original 2011 Plan”). The Company's stockholders approved on April 21, 2015, and the Company adopted, the amended and restated Simpson Manufacturing Co., Inc. 2011 Incentive Plan (the "2011 Plan"), which amended and restated in its entirety, and incorporated and superseded, the Original 2011 Plan. The Original 2011 Plan amended and restated in their entirety, and incorporated and superseded, both the Simpson Manufacturing Co., Inc. 1994 Stock Option Plan (the “1994 Plan”), which was principally for the Company’s employees, and the Simpson Manufacturing Co., Inc. 1995 Independent Director Stock Option Plan (the “1995 Plan”), which was for the Company's directors who are not employees. Options previously granted under the 1994 Plan or the 1995 Plan were not affected by the adoption of the Original 2011 Plan or the 2011 Plan and continue to be governed by the 1994 Plan or the 1995 Plan, respectively.
	Under the 1994 Plan, the Company could grant incentive stock options and non-qualified stock options. The Company, however, granted only non-qualified stock options under both the 1994 Plan and the 1995 Plan. The Company generally granted options under each of the 1994 Plan and the 1995 Plan once each year. The exercise price per share of each option granted under the 1994 Plan equaled the closing market price per share of the Company’s common stock as reported by the New York Stock Exchange on the day preceding the day that the Compensation and Leadership Development Committee of the Company’s Board of Directors met to approve the grant of the options. The exercise price per share under each option granted under the 1995 Plan was at the fair market value on the date specified in the 1995 Plan. Options vest and expire according to terms established at the grant date. Options granted under the 1994 Plan typically vest evenly over the requisite service period of four years and have a term of seven years. The vesting of options granted under the 1994 Plan will be accelerated if the grantee ceases to be employed by the Company after reaching age 60 or if there is a change in control of the Company. Options granted under the 1995 Plan were fully vested on the date of grant. Shares of common stock issued on exercise of stock options under the 1994 Plan and the 1995 Plan are registered under the Securities Act of 1933.
	Under the 2011 Plan, the Company may grant incentive stock options, non-qualified stock options, restricted stock and restricted stock units, although the Company currently intends to award primarily restricted stock units and to a lesser extent, if at all, non-qualified stock options. The Company has not awarded, and does not currently intend to award, incentive stock options or restricted stock. Under the 2011 Plan, no more than 16.3 million shares of the Company’s common stock may be issued (including shares already issued) pursuant to all awards under the 2011 Plan, including on exercise of options previously granted under the 1994 Plan and the 1995 Plan. Shares of common stock to be issued pursuant to the 2011 Plan are registered under the Securities Act of 1933.
	The following table represents the Company’s stock option and restricted stock unit activity for the three months ended March 31, 2015 and 2014:
		Three Months Ended March 31,
	(in thousands)	2015			2014
	Stock-based compensation expense recognized in operating expenses	$	3,084		$	2,476
	Less: Tax benefit of stock-based compensation expense in provision for income taxes	1,052			910
	Stock-based compensation expense, net of tax	$	2,032		$	1,566
	Fair value of shares vested	$	2,784		$	2,379
	Proceeds to the Company from the exercise of stock-based compensation	$	5,484		$	1,769
	Tax effect from the exercise of stock-based compensation, including shortfall tax benefits	$	(184	)	$	(135	)
		At March 31,
	(in thousands)	2015			2014
	Stock-based compensation cost capitalized in inventory	$	276		$	459
	The amounts included in cost of sales, research and development and other engineering, selling, or general and administrative expense depend on the job functions performed by the employees to whom the stock options and restricted stock units were awarded.
	The assumptions used to calculate the fair value of stock options granted or restricted stock units awarded are evaluated and revised, as necessary, to reflect market conditions and the Company’s experience.
	Fair Value of Financial Instruments
	The “Fair Value Measurements and Disclosures” topic of the Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) establishes a valuation hierarchy for disclosure of the inputs used to measure fair value. This hierarchy prioritizes the inputs into three broad levels as follows: Level 1 inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities; Level 2 inputs are quoted prices for similar assets and liabilities in active markets or inputs that are observable for the asset or liability, either directly or indirectly through market corroboration, for substantially the full term of the financial instrument; and Level 3 inputs are unobservable inputs based on the Company’s assumptions used to measure assets and liabilities at fair value. A financial asset’s or liability’s classification within the hierarchy is determined based on the lowest level input that is significant to the fair value measurement.
	The Company’s investments consisted of only United States Treasury securities and money market funds, which are the Company’s primary financial instruments, maintained in cash equivalents and carried at cost, approximating fair value, based on Level 1 inputs. The balances of the Company’s primary financial instruments were as follows:
		At March 31,						At December 31,
	(in thousands)	2015			2014			2014
	Financial instruments	$	91,569		$	99,235		$	99,024
	The carrying amounts of trade accounts receivable, accounts payable and accrued liabilities approximate fair value due to the short-term nature of these instruments.
	Income Taxes
	The Company uses an estimated annual effective tax rate to measure the tax benefit or tax expense recognized in each interim period. The effective tax rate was slightly lower in the first quarter of 2015 than in the first quarter of 2014. The following table presents the Company’s effective tax rates and income tax expense for the three months ended March 31, 2015 and 2014:
		Three Months Ended March 31,
	(in thousands, except percentages)	2015			2014
	Effective tax rate	38.1		%	38.6		%
	Provision for income taxes	$	6,191		$	7,604
	Acquisitions
	In the first quarter of 2015, the Company paid $0.7 million in deferred consideration and $0.3 million in contingent consideration related to the Company's 2012 acquisition of S&P Clever Reinforcement Company AG and S&P Clever International AG (collectively, “S&P Clever”) and paid $0.2 million in contingent consideration related to the Company's 2013 acquisition of Bierbach GmbH & Co. KG.
	Under the business combinations topic of the FASB ASC, the Company accounts for acquisitions as business combinations and ascribes acquisition-date fair values to the acquired assets and assumed liabilities. Provisional fair value measurements are made at the time of the acquisitions. Adjustments to those measurements may be made in subsequent periods, up to one year from the acquisition date, as information necessary to complete the analysis is obtained. Fair value of intangible assets are based on Level 3 inputs.
	Sales Office Closing
	In March 2015, the Company committed to a plan to close its sales offices located in China, Thailand and Dubai, as well as to reduce its selling activities in Hong Kong due to continued losses in the region. The closures may be substantially completed as early as December 2015. As a result, the Company recorded employee severance obligation expenses of $0.8 million in March 2015, with nearly all of the amount paid by the Company in April 2015. Most of the severance obligation expense was charged to operating expenses, with less than $0.1 million recorded to cost of sales. Until the closings are finalized, estimated additional severance expense, retention bonuses and professional fees of $1.9 million will be recorded as commitment requirements are met or services are received. All of the physical locations are leased, with remaining future minimum lease obligations of $1.3 million, and will continue to be occupied while the Company considers options for early termination of the leases. If the Company terminates a lease early with no sub-lease or concessions received from the landlord and the location is no longer in use, the remaining obligation will be determined and expensed at that time. Long-lived assets of $0.2 million, consisting mostly of office equipment and vehicles, will either be sold or depreciated on an accelerated basis to their salvage value and are expected to be disposed of by December 31, 2015. Accelerated depreciation expense of $0.1 million was recorded in the first quarter of 2015, nearly all as operating expenses.
	Recently Issued Accounting Standards
	There have been no developments to recently issued accounting standards, including the expected dates of adoption and estimated effects on the Company’s consolidated financial statements, from those disclosed in the Company’s 2014 Annual Report on Form 10-K, except for the following:
	In April 2015, the FASB issued Accounting Standards Update No. 2015-05 (Subtopic 340-40), Customer’s Accounting for Fees Paid in a Cloud Computing Arrangement (“ASU 2015-05"). The guidance in this Subtopic applies only to internal-use software that a customer obtains access to in a hosting arrangement. The amendments provide guidance to customers about whether a cloud computing arrangement includes a software license. If a cloud computing arrangement includes a software license, then the customer should account for the software license element of the arrangement consistent with the acquisition of other software licenses. If a cloud computing arrangement does not include a software license, the customer should account for the arrangement as a service contract. With an election to adopt prospectively or retrospectively, this ASU will be effective for annual periods beginning after December 15, 2015. The Company is currently assessing the impact that adopting this new accounting guidance will have on its consolidated financial statements and footnote disclosures.
	Other recent authoritative guidance issued by the FASB (including technical corrections to the ASC), the American Institute of Certified Public Accountants and the Securities and Exchange Commission did not or is not expected to have a material effect on the Company’s consolidated financial statements.

Trade_Accounts_Receivable_Net

Trade Accounts Receivable, Net	3 Months Ended
	Mar. 31, 2015
Receivables [Abstract]
Trade Accounts Receivable, Net	Trade Accounts Receivable, Net
	Trade accounts receivable consisted of the following:
		At March 31,						At December 31,
	(in thousands)	2015			2014			2014
	Trade accounts receivable	$	120,701		$	117,728		$	95,033
	Allowance for doubtful accounts	(765		)	(870		)	(929		)
	Allowance for sales discounts and returns	(2,620		)	(2,699		)	(2,089		)
		$	117,316		$	114,159		$	92,015

Inventories

Inventories	3 Months Ended
	Mar. 31, 2015
Inventory Disclosure [Abstract]
Inventories	Inventories
	Inventories consisted of the following:
		At March 31,				At December 31,
	(in thousands)	2015		2014		2014
	Raw materials	$	84,040	$	92,671	$	97,732
	In-process products	20,262		19,822		19,496
	Finished products	101,010		104,036		99,317
		$	205,312	$	216,529	$	216,545

Property_Plant_and_Equipment_N

Property, Plant and Equipment, Net	3 Months Ended
	Mar. 31, 2015
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment, Net	Property, Plant and Equipment, Net
	Property, plant and equipment, net, consisted of the following:
		At March 31,						At December 31,
	(in thousands)	2015			2014			2014
	Land	$	28,795		$	29,960		$	29,390
	Buildings and site improvements	171,541			178,135			175,058
	Leasehold improvements	5,428			5,492			5,602
	Machinery, equipment, and software	225,820			229,112			228,440
		431,584			442,699			438,490
	Less accumulated depreciation and amortization	(246,055		)	(240,289		)	(245,383		)
		185,529			202,410			193,107
	Capital projects in progress	19,480			5,047			13,920
		$	205,009		$	207,457		$	207,027

Goodwill_and_Intangible_Assets

Goodwill and Intangible Assets, Net	3 Months Ended
	Mar. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets, Net	Goodwill and Intangible Assets, Net
	Goodwill was as follows:
		At March 31,						At December 31,
	(in thousands)	2015			2014			2014
	North America	$	84,216		$	84,690		$	84,526
	Europe	37,256			42,982			37,788
	Asia/Pacific	1,451			1,761			1,567
	Total	$	122,923		$	129,433		$	123,881
	Amortizable and indefinite-lived intangible assets, net, were as follows:
		At March 31, 2015
		Gross						Net
		Carrying			Accumulated			Carrying
	(in thousands)	Amount			Amortization			Amount
	North America	$	29,415		$	(15,545	)	$	13,870
	Europe	29,914			(12,300		)	17,614
	Total	$	59,329		$	(27,845	)	$	31,484
		At March 31, 2014
		Gross						Net
	(in thousands)	Carrying			Accumulated			Carrying
		Amount			Amortization			Amount
	North America	$	34,495		$	(17,278	)	$	17,217
	Europe	33,367			(10,856		)	22,511
	Total	$	67,862		$	(28,134	)	$	39,728
		At December 31, 2014
		Gross						Net
	(in thousands)	Carrying			Accumulated			Carrying
		Amount			Amortization			Amount
	North America	$	29,455		$	(14,719	)	$	14,736
	Europe	29,419			(11,568		)	17,851
	Total	$	58,874		$	(26,287	)	$	32,587
	Intangible assets consist of definite-lived and indefinite-lived assets. Definite-lived intangible assets include customer relationships, patents, unpatented technology and non-compete agreements. Amortization expense for definite-lived intangible assets during the three months ended March 31, 2015 and 2014, totaled $1.6 million and $2.2 million, respectively.
	Indefinite-lived intangible assets include in-process research and development assets and a trade name totaling $2.2 million, $5.7 million and $2.1 million at March 31, 2015, March 31, 2014 and December 31, 2014, respectively.
	At March 31, 2015, estimated future amortization of definite-lived intangible assets was as follows:
	(in thousands)
	Remaining nine months of 2015	$	4,522
	2016	5,827
	2017	4,165
	2018	3,227
	2019	3,198
	2020	3,168
	Thereafter	5,218
		$	29,325
	The changes in the carrying amount of goodwill and intangible assets for the three months ended March 31, 2015, were as follows:
					Intangible
	(in thousands)	Goodwill			Assets
	Balance at December 31, 2014	$	123,881		$	32,587
	Acquisitions	556			653
	Amortization	—			(1,557		)
	Foreign exchange	(1,514		)	(199		)
	Balance at March 31, 2015	$	122,923		$	31,484

Debt

Debt	3 Months Ended
	Mar. 31, 2015
Debt Disclosure [Abstract]
Debt	Debt
	The Company has revolving lines of credit with various banks in the United States and Europe. Total available credit at March 31, 2015, was $304.3 million, including revolving credit lines and an irrevocable standby letter of credit in support of various insurance deductibles.
	The Company’s primary credit facility is a revolving line of credit with $300.0 million in available credit. This credit facility will expire in July 2017. Amounts borrowed under this credit facility will bear interest at an annual rate equal to either, at the Company’s option, (a) the rate for Eurocurrency deposits for the corresponding deposits of U.S. dollars appearing on Reuters LIBOR1screen page (the “LIBOR Rate”), adjusted for any reserve requirement in effect, plus a spread of 0.60% to 1.45%, determined quarterly based on the Company’s leverage ratio (at March 31, 2015, the LIBOR Rate was 0.18%), or (b) a base rate, plus a spread of 0.00% to 0.45%, determined quarterly based on the Company’s leverage ratio. The base rate is defined in a manner such that it will not be less than the LIBOR Rate. The Company will pay fees for standby letters of credit at an annual rate equal to the LIBOR Rate plus the applicable spread described above, and will pay market-based fees for commercial letters of credit. The Company is required to pay an annual facility fee of 0.15% to 0.30% of the available commitments under the credit agreement, regardless of usage, with the applicable fee determined on a quarterly basis based on the Company’s leverage ratio.
	The Company’s unused borrowing capacity under other revolving credit lines and a term note totaled $4.3 million at March 31, 2015. The other revolving credit lines and term note charge interest ranging from 0.82% to 7.25%, have maturity dates from December 2015 to July 2017, and had no outstanding balances at March 31, 2015, and outstanding balances of $83 thousand and $18 thousand at March 31, 2014, and December 31, 2014, respectively. The Company was in compliance with its financial covenants at March 31, 2015.

Commitments_and_Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies
	From time to time, the Company is involved in various legal proceedings and other matters arising in the normal course of business.  The resolution of claims and litigation is subject to inherent uncertainty and could have a material adverse effect on the Company’s financial condition, cash flows and results of operations.
	Pending Claims
	Four lawsuits (the “Cases”) have been filed against the Company in the Hawaii First Circuit Court: Alvarez v. Haseko Homes, Inc. and Simpson Manufacturing, Inc., Civil No. 09-1-2697-11 (“Case 1”); Ke Noho Kai Development, LLC v. Simpson Strong-Tie Company, Inc., and Honolulu Wood Treating Co., LTD., Case No. 09-1-1491-06 SSM (“Case 2”); North American Specialty Ins. Co. v. Simpson Strong-Tie Company, Inc. and K.C. Metal Products, Inc., Case No. 09-1-1490-06 VSM (“Case 3”); and Charles et al. v. Haseko Homes, Inc. et al. and Third Party Plaintiffs Haseko Homes, Inc. et al. v. Simpson Strong-Tie Company, Inc., et al., Civil No. 09-1-1932-08 (“Case 4”).  Case 1 was filed on November 18, 2009.  Cases 2 and 3 were originally filed on June 30, 2009.  Case 4 was filed on August 19, 2009.  The Cases all relate to alleged premature corrosion of the Company’s strap tie holdown products installed in buildings in a housing development known as Ocean Pointe in Honolulu, Hawaii, allegedly causing property damage.  Case 1 is a putative class action brought by the owners of allegedly affected Ocean Pointe houses.  Case 1 was originally filed as Kai et al. v. Haseko Homes, Inc., Haseko Construction, Inc. and Simpson Manufacturing, Inc., Case No. 09-1-1476, but was voluntarily dismissed and then re-filed with a new representative plaintiff.  Case 2 is an action by the builders and developers of Ocean Pointe against the Company, claiming that either the Company’s strap tie holdowns are defective in design or manufacture or the Company failed to provide adequate warnings regarding the products’ susceptibility to corrosion in certain environments.  Case 3 is a subrogation action brought by the insurance company for the builders and developers against the Company claiming the insurance company expended funds to correct problems allegedly caused by the Company’s products.  Case 4 is a putative class action brought, like Case 1, by owners of allegedly affected Ocean Pointe homes.  In Case 4, Haseko Homes, Inc. (“Haseko”), the developer of the Ocean Pointe development, brought a third party complaint against the Company alleging that any damages for which Haseko may be liable are actually the fault of the Company. Similarly, Haseko’s sub-contractors on the Ocean Pointe development brought cross-claims against the Company seeking indemnity and contribution for any amounts for which they may ultimately be found liable. None of the Cases alleges a specific amount of damages sought, although each of the Cases seeks compensatory damages, and Case 1 seeks punitive damages.  Cases 1 and 4 have been consolidated.  In December 2012, the Court granted the Company summary judgment on the claims asserted by the plaintiff homeowners in Cases 1 and 4, and on the third party complaint and cross-claims asserted by Haseko and the sub-contractors, respectively, in Case 4. In April 2013, the Court granted Haseko and the sub-contractors’ motion for leave to amend their cross-claims to allege a claim for negligent misrepresentation. The Company continues to investigate the facts underlying the claims asserted in the Cases, including, among other things, the cause of the alleged corrosion; the severity of any problems shown to exist; the buildings affected; the responsibility of the general contractor, various subcontractors and other construction professionals for the alleged damages; the amount, if any, of damages suffered; and the costs of repair, if needed. At this time, it appears more likely than not that a written agreement reached to settle Cases 1-4 and other related insurance coverage proceedings (the “Settlement,” discussed below) will become final in accordance with its terms.  Should that occur, the Company will incur no liability under any legal theory in connection with Cases 1 - 4 or the related insurance coverage cases.
	Based on facts currently known to the Company, the Company believes that all or part of the claims alleged in the Cases may be covered by its insurance policies.  On April 19, 2011, an action was filed in the United States District Court for the District of Hawaii, National Union Fire Insurance Company of Pittsburgh, PA v. Simpson Manufacturing Company, Inc., et al., Civil No. 11-00254 ACK (the "National Union Action").  In this National Union Action, Plaintiff National Union Fire Insurance Company of Pittsburgh, Pennsylvania (“National Union”), which issued certain Commercial General Liability insurance policies to the Company, seeks declaratory relief in the Cases with respect to its obligations to defend or indemnify the Company, Simpson Strong-Tie Company Inc., and a vendor of the Company’s strap tie holdown products.  By Order dated November 7, 2011, all proceedings in the National Union action have been stayed.  If the stay is lifted, in the absence of final approval of the Settlement and accompanying resolution of the National Union action, the Company intends vigorously to defend all claims advanced by National Union.
	On April 12, 2011, Fireman’s Fund Insurance Company (“Fireman’s Fund”), another of the Company’s general liability insurers, sued Hartford Fire Insurance Company (“Hartford”), a third insurance company from whom the Company purchased general liability insurance, in the United States District Court for the Northern District of California, Fireman’s Fund Insurance Company v. Hartford Fire Insurance Company, Civil No. 11 1789 SBA (the “Fireman’s Fund Action”).  The Company has intervened in the Fireman’s Fund Action. By Order dated September 29, 2014, the Court formally stayed proceedings in the Fireman’s Fund Action, and ordered the action administratively closed. The Fireman’s Fund Action is subject to motion to reopen in the absence of final approval of the Settlement and accompanying resolution of the Fireman’s Fund Action.
	On November 21, 2011, the Company commenced a lawsuit against National Union, Fireman’s Fund, Hartford and others in the Superior Court of the State of California in and for the City and County of San Francisco (the “San Francisco coverage action”).  In the San Francisco coverage action, the Company alleges generally that the separate pendency of the National Union action and the Fireman’s Fund Action presents a risk of inconsistent adjudications; that the San Francisco Superior Court has jurisdiction over all of the parties and should exercise jurisdiction at the appropriate time to resolve any and all disputes that have arisen or may in the future arise among the Company and its liability insurers; and that the San Francisco coverage action should also be stayed pending resolution of the underlying Ocean Pointe Cases. The San Francisco coverage action has been ordered stayed pending resolution of the Cases.
	Through mediation, the parties entered into the Settlement to resolve all of these legal proceedings, including Cases 1, 2, 3 and 4; the National Union action; the Fireman’s Fund Action; and the San Francisco coverage action. All parties to the Cases have executed the Settlement and the Court has given its preliminary approval. If the Court gives final approval to the Settlement, and if the conditions are satisfied such that the Settlement becomes Effective as defined therein, the Company will incur no uninsured liability in any of these legal proceedings. The Company cannot assure that the Settlement will be approved and its conditions satisfied such that it becomes Effective, and an unfavorable outcome could result in liability that substantially exceeds the amount of the Settlement. It is not possible to reasonably estimate the amount or range of any such possible excess.
	Nishimura v. Gentry Homes, Ltd; Simpson Manufacturing Co., Inc.; and Simpson Strong-Tie Company, Inc., Civil no. 11-1-1522-7, was filed in the Circuit Court of the First Circuit of Hawaii on July 20, 2011.  The Nishimura case alleges premature corrosion of the Company’s strap tie holdown products in a housing development at Ewa Beach in Honolulu, Hawaii.  In February 2012, the Court dismissed three of the five claims the plaintiffs had asserted against the Company. In December 2013, the Court granted the Company's motion for summary judgment on the remaining claims. Currently, the case is closed, though it remains subject to appeal.
	The Company is not engaged in any other legal proceedings as of the date hereof, which the Company expects individually or in the aggregate to have a material adverse effect on the Company’s financial condition, cash flows or results of operations. The resolution of claims and litigation is subject to inherent uncertainty and could have a material adverse effect on the Company’s financial condition, cash flows or results of operations.
	Other
	Corrosion, hydrogen enbrittlement, cracking, material hardness, wood pressure-treating chemicals, misinstallations, misuse, design and assembly flaws, manufacturing defects, environmental conditions, or other factors can contribute to failure of fasteners, connectors, anchors, adhesives and tool products.  On occasion, some of the products that the Company sells have failed, although the Company has not incurred any material liability resulting from those failures.  The Company attempts to avoid such failures by establishing and monitoring appropriate product specifications, manufacturing quality control procedures, inspection procedures and information on appropriate installation methods and conditions.  The Company subjects its products to extensive testing, with results and conclusions published in Company catalogues and on its websites. Based on test results to date, the Company believes that, generally, if its products are appropriately selected, installed and used in accordance with the Company’s guidance, they may be reliably used in appropriate applications.

StockBased_Incentive_Plans

Stock-Based Incentive Plans	3 Months Ended
	Mar. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-Based Incentive Plans	Stock-Based Incentive Plans
	The Company currently has one stock-based incentive plan, which incorporates and supersedes its two previous plans (see Note 1 “Basis of Presentation — Accounting for Stock-Based Compensation”). Participants are granted stock-based awards only if the applicable Company-wide or profit-center operating goals, or both, established by the Compensation and Leadership Development Committee of the Board of Directors at the beginning of the year, are met. Certain participants may have additional goals based on strategic initiatives of the Company.
	The fair value of each restricted stock unit award is estimated on the date of the award based on the closing market price of the underlying stock on the day preceding the date of the award. On February 2, 2015, 339,047 restricted stock units were awarded, including 8,550 awarded to the Company’s directors who are not employees, at an estimated value of $32.64 per share, based on the closing price on January 30, 2015. The restrictions on these awards generally lapse one quarter on the date of the award and one quarter on each of the first, second and third anniversaries of the date of the award.
	The following table summarizes the Company’s unvested restricted stock unit activity for the three months ended March 31, 2015:
			Shares		Weighted-		Aggregate
					Average Price		Intrinsic
							Value *
	Unvested Restricted Stock Units (RSUs)		(in thousands)				(in thousands)
	Outstanding at January 1, 2015		504		$	31.67
	Awarded		339
	Vested		(302	)
	Forfeited		(2	)
	Outstanding at March 31, 2015		539		$	31.56	$	20,140
	Outstanding and expected to vest at March 31, 2015		527		$	31.56	$	19,681
	*	The intrinsic value is calculated using the closing price per share of $37.37 as reported by the New York Stock Exchange on March 31, 2015.
	Based on the market value on the award date, the total intrinsic value of vested restricted stock units during the three-month periods ended March 31, 2015 and 2014, was $9.7 million and $7.9 million, respectively.
	No stock options were granted in 2014 or the first three months of 2015. The following table summarizes the Company’s stock option activity for the three months ended March 31, 2015:
			Shares		Weighted-		Weighted-		Aggregate
					Average		Average		Intrinsic
					Exercise Price		Remaining		Value *
							Contractual Life
	Non-Qualified Stock Options		(in thousands)				(in years)		(in thousands)
	Outstanding at January 1, 2015		855		$	29.48
	Exercised		(186	)
	Forfeited		(2	)
	Outstanding at March 31, 2015		667		$	29.5			$	5,248
	Outstanding and expected to vest at March 31, 2015		661		$	29.5	2.8		$	5,200
	Exercisable at March 31, 2015		667		$	29.5	2.8		$	5,248
	*	The intrinsic value represents the amount, if any, by which the fair market value of the underlying common stock exceeds the exercise price of the stock option, using the closing price per share of $37.37 as reported by the New York Stock Exchange on March 31, 2015.
	The total intrinsic value of stock options exercised during the three-month periods ended March 31, 2015 and 2014, was $1.2 million and $0.3 million, respectively.
	A summary of the status of unvested stock options as of March 31, 2015, and changes during the three months ended March 31, 2015, are presented below:
			Shares		Weighted-
					Average
					Grant-Date Fair Value
	Unvested Stock Options		(in thousands)
	Unvested at January 1, 2015		99		$	10.33
	Vested		99		10.33
	Unvested at March 31, 2015		—		$	—
	As of March 31, 2015, $12.0 million of total unrecognized compensation cost was related to unvested stock-based compensation arrangements under the 2011 Incentive Plan and is expected to be recognized over a weighted-average period of 2.3 years.

Segment_Information

Segment Information	3 Months Ended
	Mar. 31, 2015
Segment Reporting [Abstract]
Segment Information	Segment Information
	The Company is organized into three reportable segments. The segments are defined by the regions where the Company’s products are manufactured, marketed and distributed to the Company’s customers. The three regional segments are the North America segment, comprising primarily the United States and Canada, the Europe segment, comprising continental Europe and the United Kingdom, and the Asia/Pacific segment, comprising the Company’s operations in China, Hong Kong, the South Pacific and the Middle East. These segments are similar in several ways, including the types of materials, the production processes, the distribution channels and the product applications.
	The Company’s measure of profit or loss for its reportable segments is income (loss) from operations. The reconciling amount between consolidated income before tax and consolidated income from operations is interest income, which is primarily attributed to Administrative and All Other.
	The following tables illustrate certain measurements used by management to assess the performance as of or for the following periods:
		Three Months Ended March 31,
	(in thousands)	2015			2014
	Net Sales
	North America	$	150,324		$	136,882
	Europe	22,788			27,647
	Asia/Pacific	3,379			3,759
	Total	$	176,491		$	168,288
	Sales to Other Segments*
	North America	$	884		$	1,130
	Europe	299			466
	Asia/Pacific	4,844			3,072
	Total	$	6,027		$	4,668
	Income (Loss) from Operations
	North America	$	20,466		$	22,561
	Europe	(1,632		)	(919		)
	Asia/Pacific	(803		)	(1,151		)
	Administrative and all other	(1,754		)	(885		)
	Total	$	16,277		$	19,606
	* The sales to other segments are eliminated in consolidation.
								At
		At March 31,						December 31,
	(in thousands)	2015			2014			2014
	Total Assets
	North America	$	674,914		$	630,323		$	679,844
	Europe	165,795			203,606			180,005
	Asia/Pacific	29,626			29,932			29,552
	Administrative and all other	82,324			89,308			83,664
	Total	$	952,659		$	953,169		$	973,065
	Cash collected by the Company’s United States subsidiaries is routinely transferred into the Company’s cash management accounts and, therefore, has been included in the total assets of “Administrative and all other.” Cash and cash equivalent balances in the “Administrative and all other” segment were $151.2 million, $116.1 million, and $167.4 million, as of March 31, 2015 and 2014, and December 31, 2014, respectively.
	The following table illustrates the distribution of the Company’s net sales by product group for the following periods:
		Three Months Ended March 31,
	(in thousands)	2015			2014
	Wood Construction Products	$	151,379		$	144,676
	Concrete Construction Products	25,010			23,524
	Other	102			88
	Total	$	176,491		$	168,288
	Wood construction products include connectors, truss plates, fastening systems, fasteners and pre-fabricated shearwalls and are used for connecting and strengthening wood-based construction primarily in the residential construction market. Concrete construction products include adhesives, chemicals, mechanical anchors, carbide drill bits, powder actuated tools and fiber reinforcing materials and are used for restoration, protection or strengthening concrete, masonry and steel construction in residential, industrial, commercial and infrastructure construction.

Subsequent_Events

Subsequent Events	3 Months Ended
	Mar. 31, 2015
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events
	In April 2015, the Company’s Board of Directors declared a cash dividend of $0.16 per share, estimated to total $7.9 million, to be paid on July 23, 2015, to stockholders of record on July 2, 2015. This is an increase of $0.02 per share, or 14.3%, over the amount of the dividend declared in February 2015 and paid in April 2015.
	On April 21, 2015, 1,950 restricted stock units were awarded to each of the Company’s directors, who are not employees, at an estimated value of $36.33 per share based on the closing price on April 20, 2015. Restrictions on 100% of the restricted stock units lapsed on the award date.

Basis_of_Presentation_Policies

Basis of Presentation (Policies)	3 Months Ended
	Mar. 31, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Principles of Consolidation	Principles of Consolidation
	The condensed consolidated financial statements include the accounts of Simpson Manufacturing Co., Inc. and its subsidiaries (the “Company”). Investments in 50% or less owned affiliates are accounted for using either the cost or the equity method. All significant intercompany transactions have been eliminated.
Interim Period Reporting	Interim Period Reporting
	The accompanying unaudited interim condensed consolidated financial statements have been prepared pursuant to the rules and regulations for reporting on Form 10-Q. Accordingly, certain information and footnotes required by accounting principles generally accepted in the United States of America (“GAAP”) have been condensed or omitted. These interim statements should be read in conjunction with the audited consolidated financial statements and the notes thereto included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2014.
	The unaudited quarterly condensed consolidated financial statements have been prepared on the same basis as the audited annual consolidated financial statements and, in the opinion of management, contain all adjustments (consisting of only normal recurring adjustments) necessary to state fairly the financial information set forth therein, in accordance with GAAP. The year-end condensed consolidated balance sheet data were derived from audited financial statements, but do not include all disclosures required by GAAP. The Company’s quarterly results fluctuate. As a result, the Company believes the results of operations for the interim period presented are not necessarily indicative of the results to be expected for any future period.
Out-of-Period Adjustment	Out-of-Period Adjustment
	In the first quarter of 2014, the Company recorded an out-of-period adjustment, which increased gross profit, income from operations and net income by $2.3 million, $2.0 million and $1.3 million, respectively. The adjustment resulted from an over-statement of prior periods' workers compensation expense, net of cash profit sharing expense, and was not material to the first quarter of 2014 or any prior period's financial statements.
Revenue Recognition	Revenue Recognition
	The Company recognizes revenue when the earnings process is complete, net of applicable provision for discounts, returns and incentives, whether actual or estimated, based on the Company’s experience. This generally occurs when products are shipped to the customer in accordance with the sales agreement or purchase order, ownership and risk of loss pass to the customer, collectability is reasonably assured and pricing is fixed or determinable. The Company’s general shipping terms are F.O.B. shipping point, and title is transferred and revenue is recognized when the products are shipped to customers. When the Company sells F.O.B. destination point, title is transferred and the Company recognizes revenue on delivery or customer acceptance, depending on terms of the sales agreement. Service sales, representing after-market repair and maintenance, engineering activities, software license sales and services and lease income, though significantly less than 1% of net sales and not material to the condensed consolidated financial statements, are recognized as the services are completed or the software products and services are delivered. If actual costs of sales returns, incentives and discounts were to significantly exceed the recorded estimated allowance, the Company’s sales would be adversely
Net Earnings Per Common Share	Net Earnings Per Common Share
	Basic earnings per common share are computed based on the weighted-average number of common shares outstanding. Potentially dilutive securities, using the treasury stock method, are included in the diluted per-share calculations for all periods when the effect of their inclusion is d
Accounting for Stock-Based Compensation	Accounting for Stock-Based Compensation
	With the approval of the Company’s stockholders on April 26, 2011, the Company adopted the Simpson Manufacturing Co., Inc. 2011 Incentive Plan (the “Original 2011 Plan”). The Company's stockholders approved on April 21, 2015, and the Company adopted, the amended and restated Simpson Manufacturing Co., Inc. 2011 Incentive Plan (the "2011 Plan"), which amended and restated in its entirety, and incorporated and superseded, the Original 2011 Plan. The Original 2011 Plan amended and restated in their entirety, and incorporated and superseded, both the Simpson Manufacturing Co., Inc. 1994 Stock Option Plan (the “1994 Plan”), which was principally for the Company’s employees, and the Simpson Manufacturing Co., Inc. 1995 Independent Director Stock Option Plan (the “1995 Plan”), which was for the Company's directors who are not employees. Options previously granted under the 1994 Plan or the 1995 Plan were not affected by the adoption of the Original 2011 Plan or the 2011 Plan and continue to be governed by the 1994 Plan or the 1995 Plan, respectively.
	Under the 1994 Plan, the Company could grant incentive stock options and non-qualified stock options. The Company, however, granted only non-qualified stock options under both the 1994 Plan and the 1995 Plan. The Company generally granted options under each of the 1994 Plan and the 1995 Plan once each year. The exercise price per share of each option granted under the 1994 Plan equaled the closing market price per share of the Company’s common stock as reported by the New York Stock Exchange on the day preceding the day that the Compensation and Leadership Development Committee of the Company’s Board of Directors met to approve the grant of the options. The exercise price per share under each option granted under the 1995 Plan was at the fair market value on the date specified in the 1995 Plan. Options vest and expire according to terms established at the grant date. Options granted under the 1994 Plan typically vest evenly over the requisite service period of four years and have a term of seven years. The vesting of options granted under the 1994 Plan will be accelerated if the grantee ceases to be employed by the Company after reaching age 60 or if there is a change in control of the Company. Options granted under the 1995 Plan were fully vested on the date of grant. Shares of common stock issued on exercise of stock options under the 1994 Plan and the 1995 Plan are registered under the Securities Act of 1933.
	Under the 2011 Plan, the Company may grant incentive stock options, non-qualified stock options, restricted stock and restricted stock units, although the Company currently intends to award primarily restricted stock units and to a lesser extent, if at all, non-qualified stock options. The Company has not awarded, and does not currently intend to award, incentive stock options or restricted stock. Under the 2011 Plan, no more than 16.3 million shares of the Company’s common stock may be issued (including shares already issued) pursuant to all awards under the 2011 Plan, including on exercise of options previously granted under the 1994 Plan and the 1995 Plan. Shares of common stock to be issued pursuant to the 2011 Plan are registered under the Securities Act of 1933.
Fair Value of Financial Instruments	Fair Value of Financial Instruments
	The “Fair Value Measurements and Disclosures” topic of the Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) establishes a valuation hierarchy for disclosure of the inputs used to measure fair value. This hierarchy prioritizes the inputs into three broad levels as follows: Level 1 inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities; Level 2 inputs are quoted prices for similar assets and liabilities in active markets or inputs that are observable for the asset or liability, either directly or indirectly through market corroboration, for substantially the full term of the financial instrument; and Level 3 inputs are unobservable inputs based on the Company’s assumptions used to measure assets and liabilities at fair value. A financial asset’s or liability’s classification within the hierarchy is determined based on the lowest level input that is significant to the fair value measurement.
	The Company’s investments consisted of only United States Treasury securities and money market funds, which are the Company’s primary financial instruments, maintained in cash equivalents and carried at cost, approximating fair value, based on Level 1 inputs.
Income Taxes	Income Taxes
	The Company uses an estimated annual effective tax rate to measure the tax benefit or tax expense recognized in each interim period.
Acquisitions	Acquisitions
	In the first quarter of 2015, the Company paid $0.7 million in deferred consideration and $0.3 million in contingent consideration related to the Company's 2012 acquisition of S&P Clever Reinforcement Company AG and S&P Clever International AG (collectively, “S&P Clever”) and paid $0.2 million in contingent consideration related to the Company's 2013 acquisition of Bierbach GmbH & Co. KG.
	Under the business combinations topic of the FASB ASC, the Company accounts for acquisitions as business combinations and ascribes acquisition-date fair values to the acquired assets and assumed liabilities. Provisional fair value measurements are made at the time of the acquisitions. Adjustments to those measurements may be made in subsequent periods, up to one year from the acquisition date, as information necessary to complete the analysis is obtained. Fair value of intangible assets are based on Level 3 inputs.
Sales Office Closing	Sales Office Closing
	In March 2015, the Company committed to a plan to close its sales offices located in China, Thailand and Dubai, as well as to reduce its selling activities in Hong Kong due to continued losses in the region. The closures may be substantially completed as early as December 2015. As a result, the Company recorded employee severance obligation expenses of $0.8 million in March 2015, with nearly all of the amount paid by the Company in April 2015. Most of the severance obligation expense was charged to operating expenses, with less than $0.1 million recorded to cost of sales. Until the closings are finalized, estimated additional severance expense, retention bonuses and professional fees of $1.9 million will be recorded as commitment requirements are met or services are received. All of the physical locations are leased, with remaining future minimum lease obligations of $1.3 million, and will continue to be occupied while the Company considers options for early termination of the leases. If the Company terminates a lease early with no sub-lease or concessions received from the landlord and the location is no longer in use, the remaining obligation will be determined and expensed at that time. Long-lived assets of $0.2 million, consisting mostly of office equipment and vehicles, will either be sold or depreciated on an accelerated basis to their salvage value and are expected to be disposed of by December 31, 2015. Accelerated depreciation expense of $0.1 million was recorded in the first quarter of 2015, nearly all as operating expenses.
Recently Issued Accounting Standards	Recently Issued Accounting Standards
	There have been no developments to recently issued accounting standards, including the expected dates of adoption and estimated effects on the Company’s consolidated financial statements, from those disclosed in the Company’s 2014 Annual Report on Form 10-K, except for the following:
	In April 2015, the FASB issued Accounting Standards Update No. 2015-05 (Subtopic 340-40), Customer’s Accounting for Fees Paid in a Cloud Computing Arrangement (“ASU 2015-05"). The guidance in this Subtopic applies only to internal-use software that a customer obtains access to in a hosting arrangement. The amendments provide guidance to customers about whether a cloud computing arrangement includes a software license. If a cloud computing arrangement includes a software license, then the customer should account for the software license element of the arrangement consistent with the acquisition of other software licenses. If a cloud computing arrangement does not include a software license, the customer should account for the arrangement as a service contract. With an election to adopt prospectively or retrospectively, this ASU will be effective for annual periods beginning after December 15, 2015. The Company is currently assessing the impact that adopting this new accounting guidance will have on its consolidated financial statements and footnote disclosures.
	Other recent authoritative guidance issued by the FASB (including technical corrections to the ASC), the American Institute of Certified Public Accountants and the Securities and Exchange Commission did not or is not expected to have a material effect on the Company’s consolidated financial statements.

Basis_of_Presentation_Tables

Basis of Presentation (Tables)	3 Months Ended
	Mar. 31, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Reconciliation of basic earnings per share ("EPS") to diluted EPS	The following is a reconciliation of basic earnings per common share to diluted earnings per share:
		Three Months Ended March 31,
	(in thousands, except per share amounts)	2015			2014
	Net income available to common stockholders	$	10,051		$	12,087
	Basic weighted-average shares outstanding	49,208			48,899
	Dilutive effect of potential common stock equivalents — stock options and restricted stock units	200			166
	Diluted weighted-average shares outstanding	49,408			49,065
	Earnings per common share:
	Basic	$	0.2		$	0.25
	Diluted	$	0.2		$	0.25
	Potentially dilutive securities excluded from earnings per diluted share because their effect is anti-dilutive	—			—
Stock option and restricted stock unit activity of the entity	The following table represents the Company’s stock option and restricted stock unit activity for the three months ended March 31, 2015 and 2014:
		Three Months Ended March 31,
	(in thousands)	2015			2014
	Stock-based compensation expense recognized in operating expenses	$	3,084		$	2,476
	Less: Tax benefit of stock-based compensation expense in provision for income taxes	1,052			910
	Stock-based compensation expense, net of tax	$	2,032		$	1,566
	Fair value of shares vested	$	2,784		$	2,379
	Proceeds to the Company from the exercise of stock-based compensation	$	5,484		$	1,769
	Tax effect from the exercise of stock-based compensation, including shortfall tax benefits	$	(184	)	$	(135	)
		At March 31,
	(in thousands)	2015			2014
	Stock-based compensation cost capitalized in inventory	$	276		$	459
Summary of financial instruments	The balances of the Company’s primary financial instruments were as follows:
		At March 31,						At December 31,
	(in thousands)	2015			2014			2014
	Financial instruments	$	91,569		$	99,235		$	99,024
Schedule of effective tax rates and income tax expense	The following table presents the Company’s effective tax rates and income tax expense for the three months ended March 31, 2015 and 2014:
		Three Months Ended March 31,
	(in thousands, except percentages)	2015			2014
	Effective tax rate	38.1		%	38.6		%
	Provision for income taxes	$	6,191		$	7,604

Trade_Accounts_Receivable_Net_

Trade Accounts Receivable, Net (Tables)	3 Months Ended
	Mar. 31, 2015
Receivables [Abstract]
Schedule of trade accounts receivable, net	Trade accounts receivable consisted of the following:
		At March 31,						At December 31,
	(in thousands)	2015			2014			2014
	Trade accounts receivable	$	120,701		$	117,728		$	95,033
	Allowance for doubtful accounts	(765		)	(870		)	(929		)
	Allowance for sales discounts and returns	(2,620		)	(2,699		)	(2,089		)
		$	117,316		$	114,159		$	92,015

Inventories_Tables

Inventories (Tables)	3 Months Ended
	Mar. 31, 2015
Inventory Disclosure [Abstract]
Schedule of carrying values of inventories	Inventories consisted of the following:
		At March 31,				At December 31,
	(in thousands)	2015		2014		2014
	Raw materials	$	84,040	$	92,671	$	97,732
	In-process products	20,262		19,822		19,496
	Finished products	101,010		104,036		99,317
		$	205,312	$	216,529	$	216,545

Property_Plant_and_Equipment_N1

Property, Plant and Equipment, Net (Tables)	3 Months Ended
	Mar. 31, 2015
Property, Plant and Equipment [Abstract]
Schedule of property, plant and equipment	Property, plant and equipment, net, consisted of the following:
		At March 31,						At December 31,
	(in thousands)	2015			2014			2014
	Land	$	28,795		$	29,960		$	29,390
	Buildings and site improvements	171,541			178,135			175,058
	Leasehold improvements	5,428			5,492			5,602
	Machinery, equipment, and software	225,820			229,112			228,440
		431,584			442,699			438,490
	Less accumulated depreciation and amortization	(246,055		)	(240,289		)	(245,383		)
		185,529			202,410			193,107
	Capital projects in progress	19,480			5,047			13,920
		$	205,009		$	207,457		$	207,027

Goodwill_and_Intangible_Assets1

Goodwill and Intangible Assets, Net (Tables)	3 Months Ended
	Mar. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of goodwill, by segment	Goodwill was as follows:
		At March 31,						At December 31,
	(in thousands)	2015			2014			2014
	North America	$	84,216		$	84,690		$	84,526
	Europe	37,256			42,982			37,788
	Asia/Pacific	1,451			1,761			1,567
	Total	$	122,923		$	129,433		$	123,881
Schedule of net intangible assets, by segment	Amortizable and indefinite-lived intangible assets, net, were as follows:
		At March 31, 2015
		Gross						Net
		Carrying			Accumulated			Carrying
	(in thousands)	Amount			Amortization			Amount
	North America	$	29,415		$	(15,545	)	$	13,870
	Europe	29,914			(12,300		)	17,614
	Total	$	59,329		$	(27,845	)	$	31,484
		At March 31, 2014
		Gross						Net
	(in thousands)	Carrying			Accumulated			Carrying
		Amount			Amortization			Amount
	North America	$	34,495		$	(17,278	)	$	17,217
	Europe	33,367			(10,856		)	22,511
	Total	$	67,862		$	(28,134	)	$	39,728
		At December 31, 2014
		Gross						Net
	(in thousands)	Carrying			Accumulated			Carrying
		Amount			Amortization			Amount
	North America	$	29,455		$	(14,719	)	$	14,736
	Europe	29,419			(11,568		)	17,851
	Total	$	58,874		$	(26,287	)	$	32,587
Schedule of estimated future amortization of intangible assets	At March 31, 2015, estimated future amortization of definite-lived intangible assets was as follows:
	(in thousands)
	Remaining nine months of 2015	$	4,522
	2016	5,827
	2017	4,165
	2018	3,227
	2019	3,198
	2020	3,168
	Thereafter	5,218
		$	29,325
Changes in the carrying amount of goodwill and intangible assets	The changes in the carrying amount of goodwill and intangible assets for the three months ended March 31, 2015, were as follows:
					Intangible
	(in thousands)	Goodwill			Assets
	Balance at December 31, 2014	$	123,881		$	32,587
	Acquisitions	556			653
	Amortization	—			(1,557		)
	Foreign exchange	(1,514		)	(199		)
	Balance at March 31, 2015	$	122,923		$	31,484

StockBased_Incentive_Plans_Tab

Stock-Based Incentive Plans (Tables)	3 Months Ended
	Mar. 31, 2015
Restricted Stock
Stock-Based Compensation
Schedule of unvested restricted stock unit activity	The following table summarizes the Company’s unvested restricted stock unit activity for the three months ended March 31, 2015:
			Shares		Weighted-		Aggregate
					Average Price		Intrinsic
							Value *
	Unvested Restricted Stock Units (RSUs)		(in thousands)				(in thousands)
	Outstanding at January 1, 2015		504		$	31.67
	Awarded		339
	Vested		(302	)
	Forfeited		(2	)
	Outstanding at March 31, 2015		539		$	31.56	$	20,140
	Outstanding and expected to vest at March 31, 2015		527		$	31.56	$	19,681
	*	The intrinsic value is calculated using the closing price per share of $37.37 as reported by the New York Stock Exchange on March 31, 2015.
Non-Qualified Stock Options
Stock-Based Compensation
Summary of stock option activity	The following table summarizes the Company’s stock option activity for the three months ended March 31, 2015:
			Shares		Weighted-		Weighted-		Aggregate
					Average		Average		Intrinsic
					Exercise Price		Remaining		Value *
							Contractual Life
	Non-Qualified Stock Options		(in thousands)				(in years)		(in thousands)
	Outstanding at January 1, 2015		855		$	29.48
	Exercised		(186	)
	Forfeited		(2	)
	Outstanding at March 31, 2015		667		$	29.5			$	5,248
	Outstanding and expected to vest at March 31, 2015		661		$	29.5	2.8		$	5,200
	Exercisable at March 31, 2015		667		$	29.5	2.8		$	5,248
	*	The intrinsic value represents the amount, if any, by which the fair market value of the underlying common stock exceeds the exercise price of the stock option, using the closing price per share of $37.37 as reported by the New York Stock Exchange on March 31, 2015.
Unvested Stock Options
Stock-Based Compensation
Summary of stock option activity	A summary of the status of unvested stock options as of March 31, 2015, and changes during the three months ended March 31, 2015, are presented below:
			Shares		Weighted-
					Average
					Grant-Date Fair Value
	Unvested Stock Options		(in thousands)
	Unvested at January 1, 2015		99		$	10.33
	Vested		99		10.33
	Unvested at March 31, 2015		—		$	—

Segment_Information_Tables

Segment Information (Tables)	3 Months Ended
	Mar. 31, 2015
Segment Reporting [Abstract]
Schedule of performance of reportable segments	The following tables illustrate certain measurements used by management to assess the performance as of or for the following periods:
		Three Months Ended March 31,
	(in thousands)	2015			2014
	Net Sales
	North America	$	150,324		$	136,882
	Europe	22,788			27,647
	Asia/Pacific	3,379			3,759
	Total	$	176,491		$	168,288
	Sales to Other Segments*
	North America	$	884		$	1,130
	Europe	299			466
	Asia/Pacific	4,844			3,072
	Total	$	6,027		$	4,668
	Income (Loss) from Operations
	North America	$	20,466		$	22,561
	Europe	(1,632		)	(919		)
	Asia/Pacific	(803		)	(1,151		)
	Administrative and all other	(1,754		)	(885		)
	Total	$	16,277		$	19,606
	* The sales to other segments are eliminated in consolidation.
								At
		At March 31,						December 31,
	(in thousands)	2015			2014			2014
	Total Assets
	North America	$	674,914		$	630,323		$	679,844
	Europe	165,795			203,606			180,005
	Asia/Pacific	29,626			29,932			29,552
	Administrative and all other	82,324			89,308			83,664
	Total	$	952,659		$	953,169		$	973,065
Schedule of net sales distributed by product group	The following table illustrates the distribution of the Company’s net sales by product group for the following periods:
		Three Months Ended March 31,
	(in thousands)	2015			2014
	Wood Construction Products	$	151,379		$	144,676
	Concrete Construction Products	25,010			23,524
	Other	102			88
	Total	$	176,491		$	168,288

Basis_of_Presentation_Details

Basis of Presentation (Details)	3 Months Ended
	Mar. 31, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
High end of the range of the required percentage voting interest held to account for investments with the equity method of accounting	50.00%

Basis_of_Presentation_Basis_of

Basis of Presentation Basis of Presentation (Details 1) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Gross profit	$77,498	$77,762
Income from operations	16,277	19,606
Net income	10,051	12,087	51,444
Restatement Adjustment
Gross profit		0
Income from operations		0
Net income		$0

Basis_of_Presentation_Basis_of1

Basis of Presentation Basis of Presentation (Details 2) (Maximum)	3 Months Ended
	Mar. 31, 2015
Maximum
Revenue from External Customer [Line Items]
Service Sales Percentage of Net Sales	1.00%

Basis_of_Presentation_Details_

Basis of Presentation (Details 3) (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Reconciliation of basic earnings per share ("EPS") to diluted EPS
Net income available to common stockholders	$10,051	$12,087	$51,444
Basic weighted-average shares outstanding	49,208	48,899
Dilutive effect of potential common stock equivalents — stock options and restricted stock units	200	166
Diluted weighted-average shares outstanding	49,408	49,065
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	0	0
Earnings per common share:
Basic (in dollars per share)	$0.20	$0.25
Diluted (in dollars per share)	$0.20	$0.25

Basis_of_Presentation_Details_1

Basis of Presentation (Details 4) (USD $)	3 Months Ended
In Thousands, except Share data in Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Stock-based compensation activity, including both continuing and discontinued operations
Stock-based compensation expense recognized in operating expenses	$3,084	$2,476
Less: Tax benefit of stock-based compensation expense in provision for income taxes	1,052	910
Stock-based compensation expense, net of tax	2,032	1,566
Fair value of shares vested	2,784	2,379
Proceeds to the Company from the exercise of stock-based compensation	5,484	1,769
Tax effect from the exercise of stock-based compensation, including shortfall tax benefits	-184	-135
Fair value of financial instruments
United States Treasury securities and money market funds included in cash equivalents	91,569	99,235	99,024
Income Taxes
Effective tax rate (as a percent)	38.10%	38.60%
Provision for income taxes	6,191	7,604
Stock Compensation Plan
Stock-based compensation activity, including both continuing and discontinued operations
Stock-based compensation cost capitalized in inventory	$276	$459
1994 Plan
Stock-Based Compensation
Requisite service period for options to vest	4 years
Expiration period for options granted	7 years
Age after which vesting of options granted accelerates if the grantee ceases to be employed by the entity	60 years
2011 Plan
Stock-Based Compensation
Maximum common stock shares that may be issued under plan	16.3

Basis_of_Presentation_Details_2

Basis of Presentation (Details 5) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015
Acquisitions
Maximum period for payment for adjustments to provisional fair value measurements	1 year
S&P Clever
Acquisitions
Deferred consideration payment	0.7
Contingent consideration payment	0.3
Bierbach GmbH & Co. KG.
Acquisitions
Contingent consideration payment	0.2

Basis_of_Presentation_Sales_Of

Basis of Presentation Sales Office Closing (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015
Restructuring Cost and Reserve [Line Items]
Severance costs	$0.80
Retention bonuses and professional fees	1.9
Future minimum lease obligations	1.3
Long-lived asset to be disposed	0.2
Accelerated depreciation expense	0.1
Cost of Sales
Restructuring Cost and Reserve [Line Items]
Severance costs	$0.10

Trade_Accounts_Receivable_Net_1

Trade Accounts Receivable, Net (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014
In Thousands, unless otherwise specified
Receivables [Abstract]
Trade accounts receivable	$120,701	$95,033	$117,728
Allowance for doubtful accounts	-765	-929	-870
Allowance for sales discounts and returns	-2,620	-2,089	-2,699
Trade accounts receivable, net	$117,316	$92,015	$114,159

Inventories_Details

Inventories (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014
In Thousands, unless otherwise specified
Inventory Disclosure [Abstract]
Raw materials	$84,040	$97,732	$92,671
In-process products	20,262	19,496	19,822
Finished products	101,010	99,317	104,036
Total inventories	$205,312	$216,545	$216,529

Property_Plant_and_Equipment_N2

Property, Plant and Equipment, Net (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014
In Thousands, unless otherwise specified
Property, Plant and Equipment
Property, plant and equipment, gross	$431,584	$438,490	$442,699
Less accumulated depreciation and amortization	-246,055	-245,383	-240,289
Property, plant and equipment excluding capital projects in progress, net	185,529	193,107	202,410
Capital projects in progress	19,480	13,920	5,047
Property, plant and equipment, net	205,009	207,027	207,457
Land
Property, Plant and Equipment
Property, plant and equipment, gross	28,795	29,390	29,960
Buildings and site improvements
Property, Plant and Equipment
Property, plant and equipment, gross	171,541	175,058	178,135
Leasehold improvements
Property, Plant and Equipment
Property, plant and equipment, gross	5,428	5,602	5,492
Machinery, equipment, and software
Property, Plant and Equipment
Property, plant and equipment, gross	$225,820	$228,440	$229,112

Goodwill_and_Intangible_Assets2

Goodwill and Intangible Assets, Net (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014
In Thousands, unless otherwise specified
Carrying amount of goodwill by reportable segment
Goodwill	$122,923	$123,881	$129,433
North America
Carrying amount of goodwill by reportable segment
Goodwill	84,216	84,526	84,690
Europe
Carrying amount of goodwill by reportable segment
Goodwill	37,256	37,788	42,982
Asia/Pacific
Carrying amount of goodwill by reportable segment
Goodwill	$1,451	$1,567	$1,761

Goodwill_and_Intangible_Assets3

Goodwill and Intangible Assets, Net (Details 2) (USD $)	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014
In Thousands, unless otherwise specified
Changes in gross carrying amount of finite-lived intangible assets
Finite-Lived Intangible Assets, Gross	$59,329	$58,874	$67,862
Accumulated Amortization	-27,845	-26,287	-28,134
Net Carrying Amount	31,484	32,587	39,728
Estimated future amortization of intangible assets
Remaining nine months of 2015	4,522
2016	5,827
2017	4,165
2018	3,227
2019	3,198
2020	3,168
Thereafter	5,218
Total	29,325
North America
Changes in gross carrying amount of finite-lived intangible assets
Finite-Lived Intangible Assets, Gross	29,415	29,455	34,495
Accumulated Amortization	-15,545	-14,719	-17,278
Net Carrying Amount	13,870	14,736	17,217
Europe
Changes in gross carrying amount of finite-lived intangible assets
Finite-Lived Intangible Assets, Gross	29,914	29,419	33,367
Accumulated Amortization	-12,300	-11,568	-10,856
Net Carrying Amount	$17,614	$17,851	$22,511

Goodwill_and_Intangible_Assets4

Goodwill and Intangible Assets, Net Goodwill and Intangible Assets, Net (Details 3) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Indefinite-lived Intangible Assets [Line Items]
Amortization of intangibles	$1,557,000	$2,200,000
In-Process Research and Development and Trade Name
Indefinite-lived Intangible Assets [Line Items]
Indefinite-lived intangible assets	$2,200,000	$5,700,000	$2,100,000

Goodwill_and_Intangible_Assets5

Goodwill and Intangible Assets, Net (Details 4) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Changes in the carrying amount of goodwill
Balance at the beginning of the period	$123,881
Acquisitions	556
Foreign exchange	-1,514
Balance at the end of the period	122,923	129,433
Changes in the carrying amount of intangible assets
Balance at the beginning of the period	32,587
Acquisitions	653
Amortization	-1,557	-2,200
Foreign exchange	-199
Balance at the end of the period	$31,484	$39,728

Debt_Details

Debt (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014
Debt
Credit facility, maximum borrowing capacity	$304,300,000
Primary revolving line of credit
Debt
Credit facility, maximum borrowing capacity	300,000,000
Primary revolving line of credit | Minimum
Debt
Facility fees on the available commitment of the facility (as a percent)	0.15%
Primary revolving line of credit | Maximum
Debt
Facility fees on the available commitment of the facility (as a percent)	0.30%
Primary revolving line of credit | LIBOR
Debt
LIBOR Rate at end of period (as a percent)	0.18%
Credit facility, interest rate basis	LIBOR
Primary revolving line of credit | LIBOR | Minimum
Debt
Credit facility, interest rate spread (as a percent)	0.60%
Primary revolving line of credit | LIBOR | Maximum
Debt
Credit facility, interest rate spread (as a percent)	1.45%
Primary revolving line of credit | Base rate
Debt
Credit facility, interest rate basis	base rate
Primary revolving line of credit | Base rate | Minimum
Debt
Credit facility, interest rate spread (as a percent)	0.00%
Primary revolving line of credit | Base rate | Maximum
Debt
Credit facility, interest rate spread (as a percent)	0.45%
Other revolving credit lines and long term debt
Debt
Total borrowing capacity	4,300,000
Credit facility, interest rate low end of range (as a percent)	0.82%
Credit facility, interest rate high end of range (as a percent)	7.25%
Total outstanding balances	$0	$18,000	$83,000

Commitments_and_Contingencies_

Commitments and Contingencies (Details)	3 Months Ended	1 Months Ended
	Mar. 31, 2015	Feb. 29, 2012
	lawsuit	lawsuit
Litigation
Number of lawsuits filed against the entity	4
Number of cases that alleges damages	0
Nishimura case
Litigation
Number of lawsuits filed against the entity		5
Number of lawsuits dismissed		3

StockBased_Incentive_Plans_Det

Stock-Based Incentive Plans (Details) (USD $)	0 Months Ended	3 Months Ended
	Feb. 02, 2015	Mar. 31, 2015	Mar. 31, 2014
Stock-Based Compensation
Number of stock-based incentive plans		1
Number of stock option plans superseded		2
Aggregate Intrinsic Value
Granted (in shares)		0
Total intrinsic value of options exercised (in dollars)		$1,200,000	$300,000
Unrecognized compensation cost and vesting period
Unrecognized compensation costs related to unvested share-based compensation arrangements		12,000,000
Weighted-average period for recognition of unrecognized stock-based compensation expense		2 years 3 months 18 days
Restricted Stock Units
Stock-Based Compensation
Weighted average granted date fair value (in dollars per share)	$32.64
Restricted stock unit activity
Outstanding at the beginning of the period (in shares)		504,000
Awarded (in shares)	339,047	339,000
Vested (in shares)		-302,000
Forfeited (in shares)		-2,000
Outstanding at the end of the period (in shares)		539,000
Outstanding and expected to vest at the end of the period (in shares)		527,000
Weighted-Average Exercise Price
Outstanding at the beginning of the period (in dollars per share)		$31.67
Outstanding at the end of the period (in dollars per share)		$31.56
Outstanding and expected to vest at the end of the period (in dollars per share)		$31.56
Aggregate Intrinsic Value
Outstanding at the end of the period (in dollars)		20,140,000
Outstanding and expected to vest at end of the period (in dollars)		19,681,000
Aggregate Intrinsic Value
Closing price per share (in dollars per share)		$37.37
Total intrinsic value of awards vested (in dollars)		9,700,000	7,900,000
Non-Qualified Stock Options
Non-Qualified Stock Options activity
Outstanding at the beginning of the period (in shares)		855,000
Exercised (in shares)		-186,000
Forfeited (in shares)		-2,000
Outstanding at the end of the period (in shares)		667,000
Outstanding and expected to vest at the end of the period (in shares)		661,000
Exercisable at the end of the period (in shares)		667,000
Weighted-Average Exercise Price
Outstanding at the beginning of the period (in dollars per share)		$29.48
Outstanding at the end of the period (in dollars per share)		$29.50
Outstanding and expected to vest at end of the period (in dollars per share)		$29.50
Exercisable at end of the period (in dollars per share)		$29.50
Weighted-Average Remaining Contractual Life
Outstanding and expected to vest		2 years 9 months 18 days
Exercisable at end of the period		2 years 9 months 18 days
Aggregate Intrinsic Value
Outstanding at the end of the period (in dollars)		5,248,000
Outstanding and expected to vest at end of the period (in dollars)		5,200,000
Exercisable at end of the period (in dollars)		$5,248,000
Unvested Stock Options
Number of Shares, Unvested Stock Options
Unvested at the beginning of the period (in shares)		99,000
Vested (in shares)		-99,000
Unvested at the end of the period (in shares)		0
Weighted-Average Grant-Date Fair Value, Unvested Stock Options
Unvested at the beginning of the period (in dollars per share)		$10.33
Vested (in dollars per share)		$10.33
Unvested at the end of the period (in dollars per share)		$0
Non Employee Directors | Restricted Stock Units
Restricted stock unit activity
Awarded (in shares)	8,550

Segment_Information_Details

Segment Information (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014	Dec. 31, 2013
	segment
Segment Reporting [Abstract]
Number of reportable segments	3
Segment Information
Net sales	$176,491	$168,288
Income (Loss) from Operations	16,277	19,606
Total Assets	952,659	953,169	973,065
Cash and cash equivalent	233,587	211,988	260,307	251,208
Intersegment elimination
Segment Information
Net sales	6,027	4,668
Administrative and all other
Segment Information
Income (Loss) from Operations	-1,754	-885
Total Assets	82,324	89,308	83,664
Cash and cash equivalent	151,200	116,100	167,400
North America
Segment Information
Net sales	150,324	136,882
Income (Loss) from Operations	20,466	22,561
Total Assets	674,914	630,323	679,844
North America | Intersegment elimination
Segment Information
Net sales	884	1,130
Europe
Segment Information
Net sales	22,788	27,647
Income (Loss) from Operations	-1,632	-919
Total Assets	165,795	203,606	180,005
Europe | Intersegment elimination
Segment Information
Net sales	299	466
Asia/Pacific
Segment Information
Net sales	3,379	3,759
Income (Loss) from Operations	-803	-1,151
Total Assets	29,626	29,932	29,552
Asia/Pacific | Intersegment elimination
Segment Information
Net sales	$4,844	$3,072

Segment_Information_Details_2

Segment Information (Details 2) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
	segment
Net sales and long-lived assets by geographical area
Number of Reportable Segments	3
Net sales	$176,491	$168,288
Wood Construction Products
Net sales and long-lived assets by geographical area
Net sales	151,379	144,676
Concrete Construction Products
Net sales and long-lived assets by geographical area
Net sales	25,010	23,524
Other
Net sales and long-lived assets by geographical area
Net sales	$102	$88

Subsequent_Events_Details

Subsequent Events (Details) (USD $)	3 Months Ended		9 Months Ended	0 Months Ended	1 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014	Apr. 21, 2015	Apr. 30, 2015
Subsequent Event [Line Items]
Cash dividends declared per common share (in dollars per share)	$0.14	$0.13	$0.42
Estimated total cash dividend	$6,927	$6,116	$20,550
Subsequent Event
Subsequent Event [Line Items]
Cash dividends declared per common share (in dollars per share)					$0.16
Estimated total cash dividend					$7,900
Dividends payable, date to be paid					23-Jul-15
Dividends payable, date of record					2-Jul-15
Per share increase on dividend declared (in dollars per share)					$0.02
Percentage increase on dividend declared					14.30%
Restricted stock units awarded to directors				1,950
Estimated value per share of restricted stock units awarded (in dollars per share)				$36.33
Restriction percentage on RSUs				100.00%