Gibraltar Industries (ROCK) 10-Q 28 Oct 14 2014 Q3 Quarterly report Financial data

Document_And_Entity_Informatio

Document And Entity Information	9 Months Ended
	Sep. 30, 2014	Oct. 24, 2014
Document And Entity Information [Abstract]	'	'
Document Type	'10-Q	'
Amendment Flag	'false	'
Document Period End Date	30-Sep-14	'
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q3	'
Trading Symbol	'ROCK	'
Entity Registrant Name	'GIBRALTAR INDUSTRIES, INC.	'
Entity Central Index Key	'0000912562	'
Current Fiscal Year End Date	'--12-31	'
Entity Filer Category	'Accelerated Filer	'
Entity Common Stock, Shares Outstanding	'	30,904,533

Consolidated_Statements_Of_Ope

Consolidated Statements Of Operations (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Income Statement [Abstract]	'	'	'	'
Net Sales	$234,101	$217,412	$660,093	$638,732
Cost of sales	192,523	175,650	548,528	516,087
Gross profit	41,578	41,762	111,565	122,645
Selling, general, and administrative expense	23,186	24,754	78,167	84,158
Intangible asset impairment	0	23,160	0	23,160
Income (loss) from operations	18,392	-6,152	33,398	15,327
Interest expense	3,657	3,828	10,988	18,678
Other income	-664	-66	-172	-141
Income (loss) before taxes	15,399	-9,914	22,582	-3,210
Provision for income taxes	5,828	3,813	8,666	6,428
Income (loss) from continuing operations	9,571	-13,727	13,916	-9,638
Discontinued operations:	'	'	'	'
Loss before taxes	-51	0	-51	-7
Benefit of income taxes	-20	0	-20	-3
Loss from discontinued operations	-31	0	-31	-4
Net income (loss)	$9,540	($13,727)	$13,885	($9,642)
Net earnings per share – Basic:	'	'	'	'
Income (loss) from continuing operations	$0.31	($0.44)	$0.45	($0.31)
Loss from discontinued operations	($0.01)	$0	($0.01)	$0
Net income (loss)	$0.30	($0.44)	$0.44	($0.31)
Weighted average shares outstanding – Basic	31,083	30,946	31,046	30,916
Net earnings per share – Diluted:	'	'	'	'
Income (loss) from continuing operations	$0.31	($0.44)	$0.45	($0.31)
Loss from discontinued operations	($0.01)	$0	($0.01)	$0
Net income (loss)	$0.30	($0.44)	$0.44	($0.31)
Weighted average shares outstanding – Diluted	31,298	30,946	31,256	30,916

Consolidated_Statements_Of_Com

Consolidated Statements Of Comprehensive Income (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Other Comprehensive Income (Loss), Net of Tax [Abstract]	'	'	'	'
Net income (loss)	$9,540	($13,727)	$13,885	($9,642)
Other comprehensive (loss) income:	'	'	'	'
Foreign currency translation adjustment	-2,734	2,539	-2,096	-1,362
Net change in unrealized gain (loss) on cash flow hedges, net of tax	714	0	-242	0
Adjustment to retirement benefit liability, net of tax	2	3	6	7
Adjustment to post-retirement health care liability, net of tax	19	18	56	56
Other comprehensive (loss) income	-1,999	2,560	-2,276	-1,299
Total comprehensive income (loss)	$7,541	($11,167)	$11,609	($10,941)

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Current assets:	'	'
Cash and cash equivalents	$101,013	$97,039
Accounts receivable, net of reserve of $4,625 and $4,774 in 2014 and 2013	120,257	90,082
Inventories	126,085	121,152
Other current assets	15,992	14,127
Total current assets	363,347	322,400
Property, plant, and equipment, net	130,819	131,752
Goodwill	340,882	341,174
Acquired intangibles	87,259	91,777
Other assets	7,201	7,059
Total assets	929,508	894,162
Current liabilities:	'	'
Accounts payable	92,163	69,625
Accrued expenses	52,031	49,879
Current maturities of long-term debt	400	409
Total current liabilities	144,594	119,913
Long-term debt	213,200	213,598
Deferred income taxes	55,144	55,124
Other non-current liabilities	30,730	33,778
Shareholders’ equity:	'	'
Preferred stock, $0.01 par value; authorized 10,000 shares; none outstanding	0	0
Common stock, $0.01 par value; authorized 50,000 shares; 31,318 and 31,131 shares issued in 2014 and 2013	313	311
Additional paid-in capital	246,374	243,389
Retained earnings	250,334	236,449
Accumulated other comprehensive loss	-5,861	-3,585
Cost of 424 and 395 common shares held in treasury in 2014 and 2013	-5,320	-4,815
Total shareholders’ equity	485,840	471,749
Total liabilities and shareholders' equity	$929,508	$894,162

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, except Share data, unless otherwise specified
Statement of Financial Position [Abstract]	'	'
Accounts receivable, reserve	$4,625	$4,774
Preferred stock, par value	$0.01	$0.01
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares outstanding	0	0
Common stock, par value	$0.01	$0.01
Common stock, shares authorized	50,000,000	50,000,000
Common stock, shares issued	31,318,000	31,131,000
Treasury stock, shares	424,000	395,000

Consolidated_Statements_Of_Cas

Consolidated Statements Of Cash Flows (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
Cash Flows from Operating Activities	'	'
Net income (loss)	$13,885	($9,642)
Loss from discontinued operations	-31	-4
Income (loss) from continuing operations	13,916	-9,638
Adjustments to reconcile net income to net cash provided by (used in) operating activities:	'	'
Intangible asset impairment	0	23,160
Depreciation and amortization	19,452	20,396
Stock compensation expense	2,379	2,138
Other non-cash adjustments	-1,579	4,002
Non-cash charges to interest expense	772	736
Provision for deferred income tax	77	33
Loss on early note redemption	0	7,166
Increase (decrease) in cash resulting from changes in the following (excluding the effects of acquisitions):	'	'
Accounts receivable	-33,031	-25,352
Inventories	-5,526	-211
Other current assets and other assets	-1,202	-602
Accounts payable	22,260	11,919
Accrued expenses and other non-current liabilities	667	4,169
Net cash provided by operating activities of continuing operations	18,185	37,916
Net cash used in operating activities of discontinued operations	-40	-9
Net cash provided by operating activities	18,145	37,907
Cash Flows from Investing Activities	'	'
Purchases of property, plant, and equipment	-19,180	-8,816
Net proceeds from sale of property and equipment	5,958	12,447
Cash paid for acquisitions, net of cash acquired	0	-5,344
Other investing activities	121	0
Net cash used in investing activities	-13,101	-1,713
Cash Flows from Financing Activities	'	'
Proceeds from long-term debt	0	210,000
Long-term debt payments	-407	-205,084
Payment of deferred financing costs	0	-3,858
Payment of note redemption fees	0	-3,702
Purchase of treasury stock at market prices	-505	-642
Net proceeds from issuance of common stock	508	342
Excess tax benefit from stock compensation	99	62
Net cash used in financing activities	-305	-2,882
Effect of exchange rate changes on cash	-765	-492
Net increase in cash and cash equivalents	3,974	32,820
Cash and cash equivalents at beginning of year	97,039	48,028
Cash and cash equivalents at end of period	$101,013	$80,848

Consolidated_Statement_Of_Shar

Consolidated Statement Of Shareholders' Equity (USD $)	Total	Common Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Loss	Treasury Stock
In Thousands, unless otherwise specified
Balance, value at Dec. 31, 2013	$471,749	$311	$243,389	$236,449	($3,585)	($4,815)
Balance, shares at Dec. 31, 2013	'	31,131	'	'	'	395
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'	'	'	'	'
Net income (loss)	13,885	0	0	13,885	0	0
Stock compensation expense	2,379	0	2,379	0	0	0
Excess tax benefit from stock compensation	99	0	99	0	0	0
Stock options exercised, shares	'	44	'	'	'	0
Stock options exercised, value	509	1	508	0	0	0
Issuance of restricted stock, shares	'	22	'	'	'	0
Issuance of restricted stock, value	0	0	0	0	0	0
Net settlement of restricted stock units, shares	'	121	'	'	'	29
Net settlement of restricted stock units, value	-505	1	-1	0	0	-505
Total other comprehensive loss	-2,276	0	0	0	-2,276	0
Balance, value at Sep. 30, 2014	$485,840	$313	$246,374	$250,334	($5,861)	($5,320)
Balance, shares at Sep. 30, 2014	'	31,318	'	'	'	424

Consolidated_Financial_Stateme

Consolidated Financial Statements	9 Months Ended
	Sep. 30, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
Consolidated Financial Statements	'
	CONSOLIDATED FINANCIAL STATEMENTS
	The accompanying consolidated financial statements have been prepared by Gibraltar Industries, Inc. (the Company) without audit. In the opinion of management, all adjustments (consisting of normal recurring adjustments and accruals) necessary to present fairly the results of operations and other comprehensive income for the three and nine months ended September 30, 2014 and 2013, the financial position at September 30, 2014 and December 31, 2013, the statements of cash flow for the nine months ended September 30, 2014 and 2013, and the statement of shareholders’ equity for the nine months ended September 30, 2014 have been included therein in accordance with U.S. Securities and Exchange Commission (SEC) rules and regulations and prepared using the same accounting principles as are used for our annual audited financial statements.
	Certain information and footnote disclosures, including significant accounting policies normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America, have been condensed or omitted in accordance with the prescribed SEC rules. It is suggested that these consolidated financial statements be read in conjunction with the consolidated financial statements and footnotes included in the Company’s Annual Report for the year ended December 31, 2013 as filed on Form 10-K.
	The consolidated balance sheet at December 31, 2013 has been derived from the audited consolidated financial statements at that date, but does not include all of the information and footnotes required by generally accepted accounting principles for complete financial statements.
	The results of operations for the three and nine month periods ended September 30, 2014 are not necessarily indicative of the results to be expected for the full year. The Company is subject to seasonal fluctuations in its businesses primarily due to reduced activity in the first and fourth quarters for the industries which we serve due to inclement weather.

Recent_Accounting_Pronouncemen

Recent Accounting Pronouncements (Notes)	9 Months Ended
	Sep. 30, 2014
Accounting Policies [Abstract]	'
Recent Accounting Pronouncements	'
	RECENT ACCOUNTING PRONOUNCEMENTS
	In July 2013, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update 2013-11, "Income Taxes" (Topic 740). The amendments in this Update affect the financial statement presentation of an unrecognized tax benefit when a net operating loss carryforward, a similar tax loss, or a tax credit carryforward exists. The Company adopted the amendments in this Update on the effective date of December 15, 2013. The adoption of Update 2013-11 does not have a material impact on the Company's consolidated financial results.
	In April 2014, the FASB issued Accounting Standards Update 2014-08, "Presentation of Financial Statements (Topic 205) and Property, Plant, and Equipment (Topic 360)". The amendments in this update affect the presentation on the financial statements of assets which are disposed of or classified as held for sale. The amendments in Topic 205 and 360 are effective prospectively beginning on December 15, 2014. Early adoption is permitted, but only for disposals, or classifications of assets held for sale, that have not been reported in financial statements previously issued or available for issuance. The Company does not expect the adoption of Update 2014-08 to have a material impact on the Company's consolidated financial results.
	In May 2014, the FASB issued Accounting Standards Update 2014-09, "Revenue from Contracts with Customers" (Topic 606). The update clarifies the principles for recognizing revenue and develops a common standard for U.S. Generally Accepted Accounting Principles and International Financial Reporting Standards. More specifically, the core principle of the guidance is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The amendments in Topic 606 are effective for annual reporting periods beginning after December 15, 2016, including interim periods within that reporting period. Early adoption is not permitted. The Company is currently evaluating the impact of adopting the new standard on revenue recognition and its consolidated financial statements.
	In June 2014, the FASB issued Accounting Standards Update 2014-12, "Compensation - Stock Compensation" (Topic 718). The amendments in this update require that a performance target that affects vesting and that could be achieved after the requisite service period be treated as a performance condition. The amendments in Topic 718 are effective either prospectively to all awards granted or modified after the effective date, or retrospectively to all awards with performance targets that are outstanding as of the beginning of the earliest annual period presented in the financial statements and all new or modified awards thereafter. The effective date of this pronouncement is December 15, 2015 and early adoption is permitted. The Company does not expect the adoption of Topic 718 to have a material impact on the Company's consolidated financial results.

Inventories

Inventories	9 Months Ended
	Sep. 30, 2014
Inventory Disclosure [Abstract]	'
Inventories	'
	INVENTORIES
	Inventories consist of the following (in thousands):
		September 30, 2014		31-Dec-13
	Raw material	$	58,788	$	52,751
	Work-in-process	11,237		11,100
	Finished goods	56,060		57,301
	Total inventories	$	126,085	$	121,152

Acquisitions

Acquisitions	9 Months Ended
	Sep. 30, 2014
Business Combinations [Abstract]	'
Acquisitions	'
	ACQUISITIONS
	In September 2013, the Company purchased the assets of a domestic designer and distributor of solar-powered roof and attic ventilation products. The results of this acquisition have been included in the Company’s consolidated financial results since the date of acquisition (included in the Company’s Residential Products segment). The fair value of the aggregate purchase consideration for the assets acquired was $7,454,000. As part of the purchase agreement, the Company is required to pay additional consideration, or an earn-out provision, based on the acquired business’s EBITDA (Earnings Before Interest, Taxes Depreciation and Amortization) through the last day of the twenty-fourth month following the closing date of the acquisition. The Company expects to make payments of additional consideration through the end of 2015. The purchase agreement does not provide for a limit of the amount of additional consideration. The Company recorded a payable of $2,322,000 to reflect the fair value of the Company’s obligation at the date of the acquisition. Adjustments to this payable are and will be reflected in the Company’s Statement of Operations. The fair value of the Company’s obligation was $410,000 as of September 30, 2014, which resulted in a $781,000 and a $1,523,000 gain recorded in SG&A during the three and nine months ended September 30, 2014, respectively. The Company also recorded $16,000 and $69,000 to interest expense for this obligation during the three and nine months ended September 30, 2014.
	The purchase price for the acquisition was allocated to the assets acquired and liabilities assumed based upon their respective fair values. The excess consideration was recorded as goodwill and totaled $2,466,000, all of which is deductible for tax purposes. Goodwill represents future economic benefits arising from other assets acquired that could not be individually identified including growth opportunities and increased presence in the building products markets.
	The allocation of purchase consideration to the assets acquired and liabilities assumed during 2013 are as follows (in thousands):
	Working capital	$	2,665
	Property, plant, and equipment	153
	Acquired intangible assets	2,170
	Goodwill	2,466
	Fair value of purchase consideration	$	7,454
	The intangible assets acquired in this acquisition consisted of the following (in thousands):
		Fair Value			Estimated
					Useful Life
	Trademarks	$	640		Indefinite
	Technology	260			15 years
	Customer relationships	1,130			15 years
	Non-compete agreements	140			5 years
	Total	$	2,170
	The 2013 acquisition was financed through cash on hand. The Company incurred certain acquisition-related costs composed of legal and consulting fees, and these costs were recognized as a component of selling, general and administrative expenses in the consolidated statement of operations. The Company also recognized costs related to the sale of inventory at fair value as a result of allocating the purchase price of this acquisition. All acquisition related costs (including the gain recognized as a result of the calculation of the earn-out obligation at fair value) consisted of the following (in thousands):
		Three Months Ended					Nine Months Ended
		September 30,					September 30,
		2014			2013		2014			2013
	Selling, general and administrative costs	$	(781	)	$	76	$	(1,521	)	$	196
	Cost of sales	—			69		206			272
	Total acquisition related costs	$	(781	)	$	145	$	(1,315	)	$	468

Goodwill_and_Related_Intangibl

Goodwill and Related Intangible Assets	9 Months Ended
	Sep. 30, 2014
Goodwill and Intangible Assets Disclosure [Abstract]	'
Goodwill and Related Intangible Assets	'
	GOODWILL AND RELATED INTANGIBLE ASSETS
	Goodwill
	The changes in the carrying amount of goodwill for the nine months ended September 30, 2014 are as follows (in thousands):
		Residential		Industrial and			Total
		Products		Infrastructure
				Products
	Balance at December 31, 2013	$	195,520	$	145,654		$	341,174
	Foreign currency translation	—		(292		)	(292		)
	Balance at September 30, 2014	$	195,520	$	145,362		$	340,882
	The goodwill balances as of September 30, 2014 and December 31, 2013 are net of accumulated impairment losses of $150,965,000.
	Acquired Intangible Assets
	Acquired intangible assets consist of the following (in thousands):
		30-Sep-14					31-Dec-13
		Gross		Accumulated			Gross			Accumulated		Estimated Life
		Carrying		Amortization			Carrying			Amortization
		Amount					Amount
	Indefinite-lived intangible assets:
	Trademarks	$	45,576	$	—		$	45,724		$	—	Indefinite
	Finite-lived intangible assets:
	Trademarks	3,937		1,732			3,989			1,420		2 to 15 Years
	Unpatented technology	24,690		8,321			24,690			6,980		5 to 20 Years
	Customer relationships	53,763		31,069			54,171			28,926		5 to 16 Years
	Non-compete agreements	1,937		1,522			1,937			1,408		4 to 10 Years
	Backlog	1,330		1,330			1,330			1,330		1 to 2 Years
		85,657		43,974			86,117			40,064
	Total acquired intangible assets	$	131,233	$	43,974		$	131,841		$	40,064
	The following table summarizes the acquired intangible asset amortization expense for the three and nine months ended September 30 (in thousands):
		Three Months Ended					Nine Months Ended
		September 30,					September 30,
		2014		2013			2014			2013
	Amortization expense	$	1,425	$	1,622		$	4,299		$	5,018
	Amortization expense related to acquired intangible assets for the remainder of fiscal 2014 and the next five years thereafter is estimated as follows (in thousands):
	2014	$1,422
	2015	$5,581
	2016	$4,246
	2017	$4,883
	2018	$4,321
	2019	$3,650

Related_Party_Transactions

Related Party Transactions	9 Months Ended
	Sep. 30, 2014
Related Party Transactions [Abstract]	'
Related Party Transactions	'
	RELATED PARTY TRANSACTIONS
	A member of the Company’s Board of Directors, Gerald S. Lippes, is a partner in a law firm that provides legal services to the Company. At September 30, 2014 and December 31, 2013, the Company had $338,000 and $296,000, respectively, recorded in accounts payable for amounts due to this law firm. For the three and nine months ended September 30, 2014 and 2013, the Company incurred the following costs for legal services from this firm, including services provided in 2013 in connection with the note refinancing and classified as deferred financing costs (in thousands):
		Three Months Ended				Nine Months Ended
		September 30,				September 30,
		2014		2013		2014		2013
	Selling, general, and administrative expense	$	339	$	579	$	974	$	1,014
	Capitalized as deferred financing costs	—		—		—		223
	Total related-party legal costs	$	339	$	579	$	974	$	1,237
	Effective September 30, 2013, Henning N. Kornbrekke, the former President and Chief Operating Officer, retired and entered into a consulting agreement with the Company. Through this agreement, he will serve as a consultant to the Company through December 2014 for a monetary fee of $10,000 per month.

LongTerm_Debt

Long-Term Debt	9 Months Ended
	Sep. 30, 2014
Long-term Debt, Unclassified [Abstract]	'
Long-Term Debt	'
	LONG-TERM DEBT
	Long-term debt consists of the following (in thousands):
		September 30, 2014		31-Dec-13
	Senior Subordinated 6.25% Notes	$	210,000	$	210,000
	Other debt	3,600		4,007
	Total debt	213,600		214,007
	Less current maturities	400		409
	Total long-term debt	$	213,200	$	213,598
	On January 31, 2013, the Company issued $210 million of 6.25% Senior Subordinated Notes (6.25% Notes) due February 1, 2021. In connection with the issuance of the 6.25% Notes, the Company initiated a tender offer for the purchase of the outstanding $204 million of 8% Senior Subordinated Notes (8% Notes). Simultaneously with the closing of the sale of the 6.25% Notes, the Company purchased tendered notes or called for redemption of all of the remaining 8% Notes that were not purchased. In connection with the redemption and tender offer, the Company satisfied and discharged its obligations under the 8% Notes during the first quarter of 2013. The Company recorded a charge of approximately $7,166,000 in the first quarter of 2013, including $3,702,000 for the prepayment premium paid to holders of the 8% Notes, $2,199,000 to write-off deferred financing fees and $1,265,000 for the unamortized original issue discount related to the 8% Notes. In connection with the issuance of the 6.25% Notes, the Company paid $3,755,000 in placement and other fees which are recorded as deferred financing costs, which are included in other assets and are being amortized over the term of the 6.25% Notes.
	Separately, we have a Senior Credit Agreement entered into during 2011 that provides both a revolving credit facility and letters of credit which in an aggregate amount, are not permitted to exceed the lesser of (i) $200 million and (ii) a borrowing base determined by reference to the trade receivables, inventories, and property, plant, and equipment of the Company’s significant domestic subsidiaries. Borrowings under the Senior Credit Agreement are secured by the trade receivables, inventory, personal property, equipment, and certain real property of the Company’s significant domestic subsidiaries. The Senior Credit Agreement is also guaranteed by each of the Company’s significant domestic subsidiaries. The Company can request additional financing from the lenders under the Senior Credit Facility to increase the revolving credit facility to $250 million under the terms of the Senior Credit Agreement. We have had no borrowing against the Senior Credit Agreement since October 2012.
	The Senior Credit Agreement is currently committed through October 10, 2016. Interest rates on the revolving credit facility are based on the London Interbank Offering Rate (LIBOR) plus an additional margin of 2.0% to 2.5%. In addition, the revolving credit facility is subject to an annual commitment fee calculated as 0.375% of the daily average undrawn balance.
	Standby letters of credit issued under the Senior Credit Agreement to third parties on behalf of the Company, which, as of September 30, 2014 amounted to $20,863,000 . These letters of credit reduce the amount otherwise available under the revolving credit facility. As of September 30, 2014, based upon the Company’s current borrowing base calculation, the Company had $109,321,000 of availability under the revolving credit facility.
	On a trailing four-quarter basis, the Senior Credit Agreement includes a single financial covenant that requires the Company to maintain a minimum fixed charge coverage ratio of 1.25 to 1.00 at the end of each quarter. As of September 30, 2014, the Company was in compliance with this financial covenant. The Senior Credit Agreement contains other provisions and events of default that are customary for similar agreements and may limit the Company’s ability to take various actions.

Accumulated_Other_Comprehensiv

Accumulated Other Comprehensive Income	9 Months Ended
	Sep. 30, 2014
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]	'
Accumulated Other Comprehensive Income	'
	ACCUMULATED OTHER COMPREHENSIVE LOSS
	The cumulative balance of each component of accumulated other comprehensive loss, net of tax, is as follows (in thousands):
		Foreign Currency			Cash Flow Hedges			Minimum Pension		Unamortized Post Retirement Health			Total Pre-Tax Amount			Tax (Benefit) Expense			Accumulated  Other
		Translation						Liability		Care Costs									Comprehensive
		Adjustment						Adjustment											Loss
	Balance at December 31, 2013	$	(2,201	)	$	—		$	76	$	(2,256	)	$	(4,381	)	$	(796	)	$	(3,585	)
	Unrealized loss on cash flow hedge	—			(555		)	—		—			(555		)	(203		)	(352		)
	Realized gain on cash flow hedge	—			173			—		—			173			63			110
	Minimum pension and post retirement health care plan adjustments	—			—			11		91			102			40			62
	Foreign currency translation loss	(2,096		)	—			—		—			(2,096		)	—			(2,096		)
	Balance at September 30, 2014	$	(4,297	)	$	(382	)	$	87	$	(2,165	)	$	(6,757	)	$	(896	)	$	(5,861	)
	The realized losses relating to the Company’s foreign currency cash flow hedges were reclassified from Accumulated Other Comprehensive Loss and included in net sales in the Consolidated Statement of Operations.
	The realized adjustments relating to the Company’s minimum pension liability and post retirement health care costs were reclassified from Accumulated Other Comprehensive Loss and included in Selling, General and Administrative Expenses in the Consolidated Statement of Operations.
	The estimated net amount of the existing unrealized loss on cash flow hedges that is expected to be reclassified into earnings within the next twelve months is $382,000.

EquityBased_Compensation

Equity-Based Compensation	9 Months Ended
	Sep. 30, 2014
Share-based Compensation [Abstract]	'
Equity-Based Compensation	'
	EQUITY-BASED COMPENSATION
	Equity-based payments to employees and directors, including grants of stock options, restricted stock units, and restricted stock, are recognized in the statements of operations based on the grant-date fair value of the award. The Company uses the straight-line method of attributing the value of stock-based compensation expense over the vesting periods. Stock compensation expense recognized during the period is based on the value of the portion of equity-based awards that is ultimately expected to vest during the period. Vesting requirements vary for directors, executives, and key employees with a vesting period that typically equals four years with graded vesting.
	The Gibraltar Industries, Inc. 2005 Equity Incentive Plan (the Plan) is an incentive compensation plan that allows the Company to grant equity-based incentive compensation awards to eligible participants to provide them an additional incentive to promote the business of the Company, to increase their proprietary interest in the success of the Company, and to encourage them to remain in the Company’s employ. Awards under the plan may be in the form of options, restricted shares, restricted units, performance shares, performance stock units, and rights. The Plan provides for the issuance of up to 3,000,000 shares of common stock. Of the total number of shares of common stock issuable under the Plan, the aggregate number of shares which may be issued in connection with grants of incentive stock options and rights cannot exceed 900,000 shares. Vesting terms and award life are governed by the award document.
	Restricted Stock Units and Restricted Shares
	The following table provides the number of restricted stock units (that will convert to shares upon vesting) and restricted shares that were issued during the nine months ended September 30, along with the weighted average grant date fair value of each award:
		2014							2013
	Awards	Number of			Weighted				Number of			Weighted
		Awards			Average				Awards			Average
					Grant Date							Grant Date
					Fair Value							Fair Value
	Restricted stock units	168,857			$	17.17			78,405			$	12.86
	Restricted shares	21,721			$	16.76			13,188			$	16.83
	Performance Stock Units
	In January 2012, the Company awarded 295,000 performance stock units with a grant date fair value of $4,152,000. As of September 30, 2014, 280,000 of the originally awarded performance stock units remained outstanding after forfeitures. The final number of performance stock units earned was based on the Company’s total stockholder returns relative to the S&P Small Cap 600 Index for the calendar year of 2012. During the performance period, the participants earned an aggregate of 163,200 performance stock units, representing 58.3% of the targeted award of 280,000 units.
	In January 2013, the Company awarded 304,000 performance stock units with a grant date fair value of $4,123,000. As of September 30, 2014, 237,000 of the originally awarded performance stock units remained outstanding after forfeitures. The final number of performance stock units earned was determined based on the Company’s actual return on invested capital (ROIC) for 2013 relative to the improved ROIC targeted for the performance period ending December 31, 2013. During the performance period, the participants earned an aggregate of 114,000 performance stock units, representing 50% of the targeted award of 237,000 units.
	In January 2014 and June 2014, the Company awarded 212,000 and 19,000, respectively, of performance stock units with a grant date fair value of $3,914,000 and $319,000, respectively. As of September 30, 2014, 224,000 of the originally awarded performance stock units remain outstanding after forfeitures. The final number of performance stock units earned will be determined based on the Company’s actual return on invested capital (ROIC) for 2014.
	The cost of the 2012, 2013, and 2014 performance stock units will be recognized over the requisite vesting period, which ranges between one year and three years, depending on the date a participant turns 60 and completes 5 years of service. After the vesting period, any performance stock units earned will convert to cash based on the trailing 90-day closing price of the Company’s common stock as of December 31, 2014, 2015, and 2016 and be payable to participants in January 2015, 2016, and 2017, respectively.
	The following table summarizes the compensation expense recognized for the performance stock units for the three and nine months ended September 30, (in thousands):
		Three Months Ended								Nine Months Ended
		September 30,								September 30,
		2014				2013				2014				2013
	Performance stock unit compensation (recovery) expense	$	(261	)		$	(1,414	)		$	45			$	683
	Management Stock Purchase Plan
	The Management Stock Purchase Plan (MSPP) is an integral component of the Plan and provides participants the ability to defer a portion of their salary, their annual bonus under the Management Incentive Compensation Plan, and Directors’ fees. The deferral is converted to restricted stock units and credited to an account together with a company-match in restricted stock units equal to a percentage of the deferral amount. The account is converted to cash at the trailing 200-day average closing price of the Company’s stock and payable to the participants upon a termination of their service to the Company. The matching portion vests only if the participant has reached their sixtieth (60th) birthday. If a participant terminates their service to the Company prior to age sixty (60), the match is forfeited. Upon termination, the account is converted to a cash account that accrues interest at 2% over the then current ten-year U.S. Treasury note rate. The account is then paid out in either one lump sum, or in five or ten equal annual cash installments at the participant’s election.
	The fair value of restricted stock units held in the MSPP equals the trailing 200-day average closing price of the Company’s common stock as of the last day of the period. During the nine months ended September 30, 2014 and 2013, 116,708 and 121,488 restricted stock units, respectively, including the company-match, were credited to participant accounts. At September 30, 2014 and December 31, 2013, the value of the restricted stock units in the MSPP was $16.73 and $15.97 per unit, respectively. At September 30, 2014 and December 31, 2013, 731,597 and 614,888 restricted stock units, including the company-match, were credited to participant accounts including 62,349 and 47,268, respectively, of unvested restricted stock units. The Company made disbursements of $2,120,000 out of the MSPP during the nine months ended September 30, 2014, respectively, and $531,000 out of the MSPP during the nine months ended September 30, 2013.

Derivative_Instruments_and_Hed

Derivative Instruments and Hedging Activities (Notes)	9 Months Ended
	Sep. 30, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
Derivatives	'
	DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES
	The Company is exposed to certain risks arising from both its business operations and economic conditions. The primary risks that the Company manages through its derivative instruments are foreign currency exchange rate risk and commodity pricing risk. Accordingly, we have instituted hedging programs that are accounted for in accordance with Topic 815, “Derivatives and Hedging.”
	•	Our foreign currency hedging program is a cash flow hedge program designed to limit the exposure to variability in expected future cash flows. The Company uses foreign currency forward agreements and currency options, all of which mature within two years, to manage its exposure to fluctuations in the foreign currency exchange rates. These contracts are designated as hedging instruments in accordance with Topic 815.
	•	Our commodity price hedging program is designed to mitigate the risks associated with market fluctuations in the price of commodities. The Company uses commodity options, which are classified as economic hedges, to manage this risk. All economic hedges are recorded at fair value through earnings, as the Company does not qualify to use the hedge accounting designation as prescribed by Topic 815.
	Although certain of our derivative financial instruments do not qualify or are not accounted for under hedge accounting, we do not hold or issue derivative financial instruments for trading or other speculative purposes. We monitor our derivative positions using techniques including market valuations and sensitivity analyses. Hedge accounting generally provides for the matching of the timing of gain or loss recognition on the hedging instrument with the recognition of the changes in the fair value of the hedged asset or liability. These changes in fair value are attributable to the earnings effect of the hedged forecasted transactions in a cash flow hedge.
	We consider the classification of the underlying hedged item’s cash flows in determining the classification for the designated derivative instrument’s cash flows. In the event that hedge accounting is discontinued, cash flows subsequent to the date of discontinuance are classified within investing activities. We classify derivative instrument cash flows from hedges of changes in foreign currency as operating activities due to the nature of the hedged item. Cash flows from derivative instruments not designated under hedge accounting, such as our aluminum price options, are classified as investing activities.
	Derivatives Designated as Hedging Instruments
	To minimize foreign currency exposure, the Company had a foreign currency forward with a notional amount of $5,600,000 at September 30, 2014. This derivative instrument matures in December 2014.
	This foreign currency forward is recorded in the consolidated balance sheet at fair value and the related gains or losses are deferred in shareholders' equity as a component of other comprehensive income. These deferred gains and losses are reclassified into earnings and reported in net sales in the period that the hedged forecasted transaction affects earnings. However, to the extent that the forward is not effective in offsetting the change in the value of the revenue being hedged, the ineffective portions of these contracts are recognized in earnings immediately. During the three and nine months ended September 30, 2014, the ineffective portions of any hedges were immaterial.
	Derivatives not designated as hedging instruments
	To minimize commodity price exposure, the Company had commodity options with notional amounts of $12,600,000 at September 30, 2014. These derivative instruments mature at various times through January 2016.
	To minimize foreign currency exposure, the Company had foreign currency forwards with notional amounts of $11,200,000 and foreign currency options with notional amounts of $94,000,000 at September 30, 2014. These derivative instruments mature at various times through February 2016.
	These commodity options, foreign exchange forward and forward exchange options are recorded in the consolidated balance sheet at fair value and the resulting gains or losses are recorded to other income in the consolidated statement of operations. The (gains) losses recognized for the three and nine months ended September 30, are as follows (in thousands):
		Three Months Ended							Nine Months Ended
		September 30,							September 30,
	Derivatives not designated as hedging instruments	2014				2013			2014			2013
	Commodity options	$	(153	)		$	—		$	119		$	—
	Foreign exchange forwards	(237		)		—			(237		)	—
	Foreign exchange options (1)	(303		)		—			(303		)	—
	Total non-designated derivative realized (gain) loss, net	$	(693	)		$	—		$	(421	)	$	—
	(1) Includes a loss of $321,000 for the discontinuation of cash flow hedges for which the forecasted transactions are not expected to occur within the originally forecasted time frame.
	Summary of Derivatives
	Derivatives consist of the following (in thousands):
					September 30, 2014			December 31, 2013
	Derivatives designated as hedging instruments		Classification		Fair Value			Fair Value
	Foreign exchange forward		Other current assets		$	82		$	—
			Total assets		$	82		$	—
	Derivatives not designated as hedging instruments
	Commodity options		Other current assets		$	941		$	—
	Commodity options		Other assets		582			—
	Foreign exchange forwards		Other current assets		165			—
	Foreign exchange options		Other current assets		786			—
	Foreign exchange options		Other assets		684			—
			Total assets		$	3,158		$	—

Fair_Value_Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2014
Fair Value Disclosures [Abstract]	'
Fair Value Measurements	'
	FAIR VALUE MEASUREMENTS
	FASB ASC Topic 820, “Fair Value Measurements and Disclosures,” defines fair value, sets out a framework for measuring fair value, and requires certain disclosures about fair value measurements. A fair value measurement assumes that the transaction to sell an asset or transfer a liability occurs in the principal market for the asset or liability. Fair value is defined based upon an exit price model. ASC 820 establishes a valuation hierarchy for disclosure of the inputs used to measure fair value into three broad levels. A financial asset or liability’s classification within the hierarchy is determined based on the lowest level input that is significant to the fair value measurement as follows:
	•	Level 1 - Unadjusted quoted prices in active markets that are accessible to the reporting entity at the measurement date for identical assets and 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.
	•	Level 3 - Unobservable inputs for the assets or liability supported by little or no market activity. Level 3 inputs are based on the Company’s assumptions used to measure assets and liabilities at fair value.
	As described in Note 4 of the consolidated financial statements, the Company acquired the assets of one business during the year ended December 31, 2013. The estimated fair values allocated to the assets acquired and liabilities assumed relied upon fair value measurements based in part on Level 3 inputs. The valuation techniques used to assign fair values to inventory, property, plant and equipment, and intangible assets included the cost approach, market approach, relief-from-royalty approach, and other income approaches. The valuation techniques relied on a number of inputs that included the cost and condition of the property, plant and equipment, forecasted net sales and incomes, and royalty rates. In addition, the Company has a contingent consideration liability related to the earn-out provision for the 2013 acquisition discussed in Note 4 that is recorded at fair value on a recurring basis each reporting period. A discounted cash flow analysis, which takes into account a discount rate, forecasted EBITDA of the acquired business and the Company’s estimate of the probability of the acquired business achieving the forecasted EBITDA is used to determine the fair value of this liability at each reporting period until the liability will be settled in 2015. The fair value of this liability is determined using Level 3 inputs. The fair value of this liability is sensitive primarily to changes in the forecasted EBITDA of the acquired business.
	As described in Note 10 of the consolidated financial statements, the Company holds derivative foreign currency exchange forwards, foreign currency exchange options and commodity options. The fair values of foreign currency exchange contracts are determined through the use of cash flow models that utilize observable market data inputs to estimate fair value. These observable market data inputs include foreign exchange rate and credit spread curves. In addition, the Company received fair value estimates from the foreign currency contract counterparties to verify the reasonableness of the Company’s estimates.
	The fair value of commodity options is determined through the use of cash flow models that utilize observable market data inputs to estimate fair value. These observable market data inputs include forward rates and implied volatility. In addition, the Company received fair value estimates from the commodity contract counterparty to verify the reasonableness of the Company’s estimates.
	The Company’s other financial instruments primarily consist of cash and cash equivalents, accounts receivable, notes receivable, and accounts payable, and long-term debt.  The carrying values for our financial instruments approximate fair value with the exception, at times, of long-term debt. At September 30, 2014 and December 31, 2013, the carrying value of outstanding debt was $213,600,000 and $214,007,000, respectively.  The fair value of the Company’s Senior Subordinated 6.25% Notes was estimated based on quoted market prices.
	The following table sets forth by level, within the fair value hierarchy, our assets (liabilities) carried at fair value as of September 30, 2014 and December 31, 2013 (in thousands):
			September 30, 2014
		Classification	Level 1		Level 2		Level 3		Total
	Carried at fair value
	Contingent consideration liability	Accrued expenses	$	—	$	—	$	410	$	410
	Foreign currency exchange forwards	Other current assets	—		247		—		247
	Foreign currency exchange options	Other current assets	—		786		—		786
	Foreign currency exchange options	Other assets	—		684		—		684
	Commodity instruments	Other current assets	—		941		—		941
	Commodity instruments	Other assets	—		582		—		582
	Disclosed at fair value
	Senior Subordinated 6.25% Notes	Long-term debt	$	217	$	—	$	—	$	217
			December 31, 2013
		Classification	Level 1		Level 2		Level 3		Total
	Carried at fair value
	Contingent consideration liability	Accrued expenses	$	—	$	—	$	1,864	$	1,864
	Disclosed at fair value
	Senior Subordinated 6.25% Notes	Long-term debt	$	220,825	$	—	$	—	$	220,825

Discontinued_Operations

Discontinued Operations	9 Months Ended
	Sep. 30, 2014
Discontinued Operations and Disposal Groups [Abstract]	'
Discontinued Operations	'
	DISCONTINUED OPERATIONS
	For certain divestiture transactions, the Company has agreed to indemnify the buyer for various liabilities that may arise after the disposal date, subject to limits of time and amount. As of September 30, 2014, the Company has a contingent liability recorded for environmental remediation related to a discontinued operation. Management does not believe that the outcome of this claim, or other claims, would significantly affect the Company’s financial condition or results of operation.

Exit_Activity_Costs_and_Asset_

Exit Activity Costs and Asset Impairments	9 Months Ended
	Sep. 30, 2014
Restructuring and Related Activities [Abstract]	'
Exit Activity Costs And Asset Impairments	'
	EXIT ACTIVITY COSTS AND ASSET IMPAIRMENTS
	The Company focuses on being the low-cost provider of its products by reducing operating costs and implementing lean manufacturing initiatives, which have in part led to the consolidation of facilities and product lines. During the nine months ended September 30, 2014, the Company consolidated two facilities. As a result, the Company incurred a net change in asset impairment charges of $554,000, the net result of a gain on the sale of one of the consolidated facilities previously impaired in 2013, partially offset by impairment charges for the other facility consolidated during 2014. During 2013, the Company consolidated two facilities in this effort, and also identified two other facilities to close or consolidate. During the nine months ended September 30, 2013, the Company incurred $1,628,000 of asset impairment charges along with exit activity costs, including contract termination costs, severance costs, and other moving and closing costs. If future opportunities for cost savings are identified, other facility consolidations and closings will be considered.
	The following table provides a summary of asset impairments and exit activity costs incurred by segment during the three and nine months ended September 30, (in thousands):
		Three Months Ended						Nine Months Ended
		September 30,						September 30,
		2014			2013			2014		2013
	Residential Products	$	487		$	1,341		$	632	$	2,051
	Industrial and Infrastructure Products	175			—			634		75
	Total exit activity costs	$	662		$	1,341		$	1,266	$	2,126
	The following table provides a summary of where the asset impairments and exit activity costs were recorded in the statement of operations for the three and nine months ended September 30, (in thousands):
		Three Months Ended						Nine Months Ended
		September 30,						September 30,
		2014			2013			2014		2013
	Cost of sales	$	378		$	1,341		$	580	$	2,051
	Selling, general, and administrative expense	284			—			686		75
	Total exit activity costs	$	662		$	1,341		$	1,266	$	2,126
	The following table reconciles the beginning and ending liability for exit activity costs relating to the Company’s facility consolidation efforts (in thousands):
		2014			2013
	Balance at January 1	$	1,092		$	1,323
	Exit activity costs recognized	1,820			498
	Cash payments	(2,275		)	(947		)
	Balance at September 30	$	637		$	874

Income_Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2014
Income Tax Disclosure [Abstract]	'
Income Taxes	'
	INCOME TAXES
	The following table summarizes the provision for income taxes for continuing operations for the three and nine months ended September 30, and the applicable effective tax rates (in thousands):
		Three Months Ended						Nine Months Ended
		September 30,						September 30,
		2014			2013			2014			2013
	Provision of income taxes	$	5,828		$	3,813		$	8,666		$	6,428
	Effective tax rate	37.8		%	(38.5		)%	38.4		%	(200.2		)%
	The Company’s provision for income taxes in interim periods is computed by applying forecasted annual effective tax rates to income or loss before income taxes for the interim period. In addition, non-recurring or discrete items, including interest on prior year tax liabilities, are recorded during the period in which they occur. To the extent that actual income or loss before taxes for the full year differs from the forecast estimates applied at the end of the most recent interim period, the actual tax rate recognized for the year ending December 31, 2014 could be materially different from the forecasted rate used for the nine months ended September 30, 2014.
	The effective tax rates for the three and nine months ended September 30, 2014 exceeded the U.S. federal statutory rate of 35% due to state taxes and non-deductible permanent differences. For the three and nine months ended September 30, 2013, the difference between the Company's recorded charge and the benefit that would result from applying the U.S. statutory rate of 35% is primarily attributable to the tax impact of the non-deductible goodwill impairment recognized during the quarter and state taxes.

Net_Earnings_Per_Share

Net Earnings Per Share	9 Months Ended
	Sep. 30, 2014
Earnings Per Share [Abstract]	'
Net Earnings Per Share	'
	NET EARNINGS PER SHARE
	Basic earnings per share is based on the weighted average number of common shares outstanding. Diluted earnings per share is based on the weighted average number of common shares outstanding, as well as dilutive potential common shares which, in the Company’s case, comprise of shares issuable under its equity compensation plans described in Note 9 of the consolidated financial statements. The treasury stock method is used to calculate dilutive shares, which reduces the gross number of dilutive shares by the number of shares purchasable from the proceeds of the options assumed to be exercised and the unrecognized expense related to the restricted stock and restricted stock unit awards assumed to have vested.
	The following table sets forth the computation of basic and diluted earnings per share for the three and nine months ended September 30, (in thousands):
		Three Months Ended						Nine Months Ended
		September 30,						September 30,
		2014			2013			2014			2013
	Numerator:
	Income (loss) from continuing operations	$	9,571		$	(13,727	)	$	13,916		$	(9,638	)
	Loss from discontinued operations	(31		)	—			(31		)	(4		)
	Net income (loss) available to common shareholders	$	9,540		$	(13,727	)	$	13,885		$	(9,642	)
	Denominator for basic earnings per share:
	Weighted average shares outstanding	31,083			30,946			31,046			30,916
	Denominator for diluted earnings per share:
	Weighted average shares outstanding	31,083			30,946			31,046			30,916
	Common stock options and restricted stock	215			—			210			—
	Weighted average shares and conversions	$	31,298		$	30,946		$	31,256		$	30,916
	For the three and nine months ended September 30, 2013, all stock options, unvested restricted stock, and unvested restricted stock units were anti-dilutive and, therefore, not included in the dilutive loss per share calculation. The number of weighted average stock options, unvested restricted stock, and unvested restricted stock units that were not included in the dilutive loss per share calculation because the effect would have been anti-dilutive was 141,752 and 165,825 for the three and nine months ended September 30, 2013, respectively.

Segment_Information

Segment Information	9 Months Ended
	Sep. 30, 2014
Segment Reporting Information, Revenue for Reportable Segment [Abstract]	'
Segment Information	'
	SEGMENT INFORMATION
	The Company is organized into two reportable segments on the basis of the production processes and products and services provided by each segment, identified as follows:
	(i)	Residential Products, which primarily includes roof and foundation ventilation products, mail and package storage products, rain dispersion products and roofing accessories; and
	(ii)	Industrial and Infrastructure Products, which primarily includes fabricated bar grating, expanded and perforated metal, expansion joints and structural bearings.
	When determining the reportable segments, the Company aggregated several operating segments based on their similar economic and operating characteristics.
	The following table sets forth the reconciliation of sales to earnings before income taxes by segment for the three and nine months ended September 30, (in thousands):
		Three Months Ended						Nine Months Ended
		September 30,						September 30,
		2014			2013			2014			2013
	Net sales:
	Residential Products	$	122,100		$	108,424		$	326,483		$	308,536
	Industrial and Infrastructure Products	112,329			109,645			334,613			331,689
	Less: Intersegment sales	(328		)	(657		)	(1,003		)	(1,493		)
		112,001			108,988			333,610			330,196
	Total consolidated net sales	$	234,101		$	217,412		$	660,093		$	638,732
	Income (loss) from operations:
	Residential Products	$	13,694		$	10,068		$	26,740		$	29,925
	Industrial and Infrastructure Products	6,574			(13,876		)	15,727			724
	Unallocated Corporate Expenses	(1,876		)	(2,344		)	(9,069		)	(15,322		)
	Total income (loss) from operations	$	18,392		$	(6,152	)	$	33,398		$	15,327

Supplemental_Financial_Informa

Supplemental Financial Information	9 Months Ended
	Sep. 30, 2014
Condensed Financial Information of Parent Company Only Disclosure [Abstract]	'
Supplemental Financial Information	'
	SUPPLEMENTAL FINANCIAL INFORMATION
	The following information sets forth the consolidating summary financial statements of the issuer (Gibraltar Industries, Inc.) and guarantors, which guarantee the Senior Subordinated 6.25% Notes due February 1, 2021, and the non-guarantors. The guarantors are 100% owned subsidiaries of the issuer and the guarantees are full, unconditional, joint and several.
	Investments in subsidiaries are accounted for by the parent using the equity method of accounting. The guarantor subsidiaries and non-guarantor subsidiaries are presented on a combined basis. The principal elimination entries eliminate investments in subsidiaries and intercompany balances and transactions.
	GIBRALTAR INDUSTRIES, INC.
	CONSOLIDATING STATEMENTS OF OPERATIONS
	THREE MONTHS ENDED SEPTEMBER 30, 2014
	(in thousands)
		Gibraltar			Guarantor			Non-Guarantor			Eliminations			Total
		Industries, Inc.			Subsidiaries			Subsidiaries
	Net sales	$	—		$	216,132		$	22,151		$	(4,182	)	$	234,101
	Cost of sales	—			176,955			19,496			(3,928		)	192,523
	Gross profit	—			39,177			2,655			(254		)	41,578
	Selling, general, and administrative expense	29			21,592			1,565			—			23,186
	(Loss) income from operations	(29		)	17,585			1,090			(254		)	18,392
	Interest expense (income)	3,402			291			(36		)	—			3,657
	Other expense (income)	42			(733		)	27			—			(664		)
	(Loss) income before taxes	(3,473		)	18,027			1,099			(254		)	15,399
	(Benefit of) provision for income taxes	(1,208		)	6,791			245			—			5,828
	(Loss) income from continuing operations	(2,265		)	11,236			854			(254		)	9,571
	Discontinued operations:
	Loss from discontinued operations before taxes	—			(51		)	—			—			(51		)
	Benefit of income taxes	—			(20		)	—			—			(20		)
	Loss from discontinued operations	—			(31		)	—			—			(31		)
	Equity in earnings from subsidiaries	12,059			854			—			(12,913		)	—
	Net income	$	9,794		$	12,059		$	854		$	(13,167	)	$	9,540
	GIBRALTAR INDUSTRIES, INC.
	CONSOLIDATING STATEMENTS OF OPERATIONS
	THREE MONTHS ENDED SEPTEMBER 30, 2013
	(in thousands)
		Gibraltar			Guarantor			Non-Guarantor			Eliminations			Total
		Industries, Inc.			Subsidiaries			Subsidiaries
	Net sales	$	—		$	200,349		$	23,060		$	(5,997	)	$	217,412
	Cost of sales	—			160,676			20,715			(5,741		)	175,650
	Gross profit	—			39,673			2,345			(256		)	41,762
	Selling, general, and administrative expense	4			22,933			1,817			—			24,754
	Intangible asset impairment	—			1,000			22,160			—			23,160
	(Loss) income from operations	(4		)	15,740			(21,632		)	(256		)	(6,152		)
	Interest expense (income)	3,486			372			(30		)	—			3,828
	Other income	—			(66		)	—			—			(66		)
	(Loss) income before taxes	(3,490		)	15,434			(21,602		)	(256		)	(9,914		)
	(Benefit of) provision for income taxes	(1,248		)	4,781			280			—			3,813
	(Loss) income from continuing operations	(2,242		)	10,653			(21,882		)	(256		)	(13,727		)
	Equity in earnings from subsidiaries	(11,229		)	(21,882		)	—			33,111			—
	Net (loss) income	$	(13,471	)	$	(11,229	)	$	(21,882	)	$	32,855		$	(13,727	)
	GIBRALTAR INDUSTRIES, INC.
	CONSOLIDATING STATEMENTS OF OPERATIONS
	NINE MONTHS ENDED SEPTEMBER 30, 2014
	(in thousands)
		Gibraltar			Guarantor			Non-Guarantor			Eliminations			Total
		Industries, Inc.			Subsidiaries			Subsidiaries
	Net sales	$	—		$	605,798		$	68,041		$	(13,746	)	$	660,093
	Cost of sales	—			501,323			60,163			(12,958		)	548,528
	Gross profit	—			104,475			7,878			(788		)	111,565
	Selling, general, and administrative expense	96			72,986			5,085			—			78,167
	(Loss) income from operations	(96		)	31,489			2,793			(788		)	33,398
	Interest expense (income)	10,166			927			(105		)	—			10,988
	Other expense (income)	36			(304		)	96			—			(172		)
	(Loss) income before taxes	(10,298		)	30,866			2,802			(788		)	22,582
	(Benefit of) provision for income taxes	(3,572		)	11,652			586			—			8,666
	(Loss) income from continuing operations	(6,726		)	19,214			2,216			(788		)	13,916
	Discontinued operations:
	Loss from discontinued operations before taxes	—			(51		)	—			—			(51		)
	Benefit of income taxes	—			(20		)	—			—			(20		)
Loss from discontinued operations	—			(31		)	—			—			(31		)
Equity in earnings from subsidiaries	21,399			2,216			—			(23,615		)	—
Net income	$	14,673		$	21,399		$	2,216		$	(24,403	)	$	13,885
GIBRALTAR INDUSTRIES, INC.
CONSOLIDATING STATEMENTS OF OPERATIONS
NINE MONTHS ENDED SEPTEMBER 30, 2013
(in thousands)
	Gibraltar			Guarantor			Non-Guarantor			Eliminations			Total
	Industries, Inc.			Subsidiaries			Subsidiaries
Net sales	$	—		$	585,726		$	69,565		$	(16,559	)	$	638,732
Cost of sales	—			469,628			62,028			(15,569		)	516,087
Gross profit	—			116,098			7,537			(990		)	122,645
Selling, general, and administrative expense	188			78,373			5,597			—			84,158
Intangible asset impairment	—			1,000			22,160			—			23,160
(Loss) income from operations	(188		)	36,725			(20,220		)	(990		)	15,327
Interest expense (income)	17,768			1,004			(94		)	—			18,678
Other income	—			(141		)	—			—			(141		)
(Loss) income before taxes	(17,956		)	35,862			(20,126		)	(990		)	(3,210		)
(Benefit of) provision for income taxes	(6,669		)	12,392			705			—			6,428
(Loss) income from continuing operations	(11,287		)	23,470			(20,831		)	(990		)	(9,638		)
Discontinued operations:
Loss from discontinued operations before taxes	—			(7		)	—			—			(7		)
Benefit of income taxes	—			(3		)	—			—			(3		)
Loss from discontinued operations	—			(4		)	—			—			(4		)
Equity in earnings from subsidiaries	2,635			(20,831		)	—			18,196			—
Net (loss) income	$	(8,652	)	$	2,635		$	(20,831	)	$	17,206		$	(9,642	)
GIBRALTAR INDUSTRIES, INC.
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
THREE MONTHS ENDED SEPTEMBER 30, 2014
(in thousands)
	Gibraltar			Guarantor			Non-Guarantor			Eliminations			Total
	Industries, Inc.			Subsidiaries			Subsidiaries
Net income	$	9,794		$	12,059		$	854		$	(13,167	)	$	9,540
Other comprehensive income (loss):
Foreign currency translation adjustment	—			—			(2,734		)	—			(2,734		)
Change in unrealized gain on cash flow hedges, net of tax	—			714			—			—			714
Adjustment to retirement benefit liability, net of tax	—			2			—			—			2
Adjustment to post-retirement health care liability, net of tax	—			19			—			—			19
Other comprehensive income (loss)	—			735			(2,734		)	—			(1,999		)
Total comprehensive income (loss)	$	9,794		$	12,794		$	(1,880	)	$	(13,167	)	$	7,541
GIBRALTAR INDUSTRIES, INC.
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
THREE MONTHS ENDED SEPTEMBER 30, 2013
(in thousands)
	Gibraltar			Guarantor			Non-Guarantor			Eliminations			Total
	Industries, Inc.			Subsidiaries			Subsidiaries
Net loss	$	(13,471	)	$	(11,229	)	$	(21,882	)	$	32,855		$	(13,727	)
Other comprehensive income:
Foreign currency translation adjustment	—			—			2,539			—			2,539
Adjustment to retirement benefit liability, net of tax	—			3			—			—			3
Adjustment to post-retirement health care liability, net of tax	—			18			—			—			18
Other comprehensive income	—			21			2,539			—			2,560
Total comprehensive loss	$	(13,471	)	$	(11,208	)	$	(19,343	)	$	32,855		$	(11,167	)
GIBRALTAR INDUSTRIES, INC.
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
NINE MONTHS ENDED SEPTEMBER 30, 2014
(in thousands)
	Gibraltar			Guarantor			Non-Guarantor			Eliminations			Total
	Industries, Inc.			Subsidiaries			Subsidiaries
Net income	$	14,673		$	21,399		$	2,216		$	(24,403	)	$	13,885
Other comprehensive loss:
Foreign currency translation adjustment	—			—			(2,096		)	—			(2,096		)
Change in unrealized loss on cash flow hedges, net of tax	—			(242		)	—			—			(242		)
Adjustment to retirement benefit liability, net of tax	—			6			—			—			6
Adjustment to post-retirement health care liability, net of tax	—			56			—			—			56
Other comprehensive loss	—			(180		)	(2,096		)	—			(2,276		)
Total comprehensive income	$	14,673		$	21,219		$	120		$	(24,403	)	$	11,609
GIBRALTAR INDUSTRIES, INC.
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
NINE MONTHS ENDED SEPTEMBER 30, 2013
(in thousands)
	Gibraltar			Guarantor			Non-Guarantor			Eliminations			Total
	Industries, Inc.			Subsidiaries			Subsidiaries
Net (loss) income	$	(8,652	)	$	2,635		$	(20,831	)	$	17,206		$	(9,642	)
Other comprehensive income (loss):
Foreign currency translation adjustment	—			—			(1,362		)	—			(1,362		)
Adjustment to retirement benefit liability, net of tax	—			7			—			—			7
Adjustment to post-retirement health care liability, net of tax	—			56			—			—			56
Other comprehensive income (loss)	—			63			(1,362		)	—			(1,299		)
Total comprehensive (loss) income	$	(8,652	)	$	2,698		$	(22,193	)	$	17,206		$	(10,941	)
GIBRALTAR INDUSTRIES, INC.
CONSOLIDATING BALANCE SHEETS
30-Sep-14
(in thousands)
	Gibraltar			Guarantor			Non-Guarantor			Eliminations			Total
	Industries, Inc.			Subsidiaries			Subsidiaries
Assets
Current assets:
Cash and cash equivalents	$	—		$	80,085		$	20,928		$	—		$	101,013
Accounts receivable, net	—			108,810			11,447			—			120,257
Intercompany balances	19,529			1,802			(21,331		)	—			—
Inventories	—			116,874			9,211			—			126,085
Other current assets	3,582			11,171			1,239			—			15,992
Total current assets	23,111			318,742			21,494			—			363,347
Property, plant, and equipment, net	—			118,000			12,819			—			130,819
Goodwill	—			334,123			6,759			—			340,882
Acquired intangibles	—			81,995			5,264			—			87,259
Other assets	3,052			4,149			—			—			7,201
Investment in subsidiaries	670,999			33,388			—			(704,387		)	—
	$	697,162		$	890,397		$	46,336		$	(704,387	)	$	929,508
Liabilities and Shareholders’ Equity
Current liabilities:
Accounts payable	$	—		$	84,772		$	7,391		$	—		$	92,163
Accrued expenses	1,322			47,958			2,751			—			52,031
Current maturities of long-term debt	—			400			—			—			400
Total current liabilities	1,322			133,130			10,142			—			144,594
Long-term debt	210,000			3,200			—			—			213,200
Deferred income taxes	—			52,862			2,282			—			55,144
Other non-current liabilities	—			30,206			524			—			30,730
Shareholders’ equity	485,840			670,999			33,388			(704,387		)	485,840
	$	697,162		$	890,397		$	46,336		$	(704,387	)	$	929,508
GIBRALTAR INDUSTRIES, INC.
CONSOLIDATING BALANCE SHEETS
31-Dec-13
(in thousands)
	Gibraltar			Guarantor			Non-Guarantor			Eliminations			Total
	Industries, Inc.			Subsidiaries			Subsidiaries
Assets
Current assets:
Cash and cash equivalents	$	—		$	75,856		$	21,183		$	—		$	97,039
Accounts receivable, net	—			79,356			10,726			—			90,082
Intercompany balances	23,618			(1,655		)	(21,963		)	—			—
Inventories	—			111,676			9,476			—			121,152
Other current assets	7,578			5,722			827			—			14,127
Total current assets	31,196			270,955			20,249			—			322,400
Property, plant, and equipment, net	—			119,587			12,165			—			131,752
Goodwill	—			334,123			7,051			—			341,174
Acquired intangibles	—			86,014			5,763			—			91,777
Other assets	3,415			3,643			1			—			7,059
Investment in subsidiaries	652,689			33,259			—			(685,948		)	—
	$	687,300		$	847,581		$	45,229		$	(685,948	)	$	894,162
Liabilities and Shareholders’ Equity
Current liabilities:
Accounts payable	$	—		$	62,464		$	7,161		$	—		$	69,625
Accrued expenses	5,551			42,418			1,910			—			49,879
Current maturities of long-term debt	—			409			—			—			409
Total current liabilities	5,551			105,291			9,071			—			119,913
Long-term debt	210,000			3,598			—			—			213,598
Deferred income taxes	—			52,746			2,378			—			55,124
Other non-current liabilities	—			33,257			521			—			33,778
Shareholders’ equity	471,749			652,689			33,259			(685,948		)	471,749
	$	687,300		$	847,581		$	45,229		$	(685,948	)	$	894,162
GIBRALTAR INDUSTRIES, INC.
CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS
NINE MONTHS ENDED SEPTEMBER 30, 2014
(in thousands)
	Gibraltar			Guarantor			Non-Guarantor			Eliminations			Total
	Industries, Inc.			Subsidiaries			Subsidiaries
Cash Flows from Operating Activities
Net cash (used in) provided by operating activities of continuing operations	$	(13,297	)	$	27,470		$	4,012		$	—		$	18,185
Net cash used in operating activities of discontinued operations	—			(40		)	—			—			(40		)
Net cash (used in) provided by operating activities	$	(13,297	)	$	27,430		$	4,012		$	—		$	18,145
Cash Flows from Investing Activities
Purchases of property, plant, and equipment	—			(16,297		)	(2,883		)	—			(19,180		)
Other investing activities	—			121			—			—			121
Net proceeds from sale of property and equipment	—			5,955			3			—			5,958
Net cash used in investing activities	—			(10,221		)	(2,880		)	—			(13,101		)
Cash Flows from Financing Activities
Long-term debt payments	—			(407		)	—			—			(407		)
Purchase of treasury stock at market prices	(505		)	—			—			—			(505		)
Net proceeds from issuance of common stock	508			—			—			—			508
Intercompany financing	13,195			(12,573		)	(622		)	—			—
Excess tax benefit from stock compensation	99			—			—			—			99
Net cash provided by (used in) financing activities	13,297			(12,980		)	(622		)	—			(305		)
Effect of exchange rate changes on cash	—			—			(765		)	—			(765		)
Net increase (decrease) in cash and cash equivalents	—			4,229			(255		)	—			3,974
Cash and cash equivalents at beginning of year	—			75,856			21,183			—			97,039
Cash and cash equivalents at end of period	$	—		$	80,085		$	20,928		$	—		$	101,013
GIBRALTAR INDUSTRIES, INC.
CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS
NINE MONTHS ENDED SEPTEMBER 30, 2013
(in thousands)
	Gibraltar			Guarantor			Non-Guarantor			Eliminations			Total
	Industries, Inc.			Subsidiaries			Subsidiaries
Cash Flows from Operating Activities
Net cash (used in) provided by operating activities of continuing operations	$	(9,040	)	$	44,203		$	2,753		$	—		$	37,916
Net cash used in operating activities of discontinued operations	—			(9		)	—			—			(9		)
Net cash (used in) provided by operating activities	(9,040		)	44,194			2,753			—			37,907
Cash Flows from Investing Activities
Purchases of property, plant, and equipment	—			(6,196		)	(2,620		)	—			(8,816		)
Cash paid for acquisitions, net of cash acquired	—			(5,344		)	—			—			(5,344		)
Net proceeds from sale of property and equipment	—			12,434			13			—			12,447
Net cash provided by (used in) investing activities	—			894			(2,607		)	—			(1,713		)
Cash Flows from Financing Activities
Long-term debt payments	(204,000		)	(1,084		)	—			—			(205,084		)
Proceeds from long-term debt	210,000			—			—			—			210,000
Payment of note redemption fees	(3,702		)	—			—			—			(3,702		)
Purchase of treasury stock at market prices	(642		)	—			—			—			(642		)
Payment of deferred financing costs	(3,858		)	—			—			—			(3,858		)
Net proceeds from issuance of common stock	342			—			—			—			342
Intercompany financing	10,838			(10,211		)	(627		)	—			—
Excess tax benefit from stock compensation	62			—			—			—			62
Net cash provided by (used in) financing activities	9,040			(11,295		)	(627		)	—			(2,882		)
Effect of exchange rate changes on cash	—			—			(492		)	—			(492		)
Net increase (decrease) in cash and cash equivalents	—			33,793			(973		)	—			32,820
Cash and cash equivalents at beginning of year	—			26,163			21,865			—			48,028
Cash and cash equivalents at end of period	$	—		$	59,956		$	20,892		$	—		$	80,848

Recent_Accounting_Pronouncemen1

Recent Accounting Pronouncements (Policies)	9 Months Ended
	Sep. 30, 2014
Accounting Policies [Abstract]	'
Recent Accounting Pronouncements	'
	RECENT ACCOUNTING PRONOUNCEMENTS
	In July 2013, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update 2013-11, "Income Taxes" (Topic 740). The amendments in this Update affect the financial statement presentation of an unrecognized tax benefit when a net operating loss carryforward, a similar tax loss, or a tax credit carryforward exists. The Company adopted the amendments in this Update on the effective date of December 15, 2013. The adoption of Update 2013-11 does not have a material impact on the Company's consolidated financial results.
	In April 2014, the FASB issued Accounting Standards Update 2014-08, "Presentation of Financial Statements (Topic 205) and Property, Plant, and Equipment (Topic 360)". The amendments in this update affect the presentation on the financial statements of assets which are disposed of or classified as held for sale. The amendments in Topic 205 and 360 are effective prospectively beginning on December 15, 2014. Early adoption is permitted, but only for disposals, or classifications of assets held for sale, that have not been reported in financial statements previously issued or available for issuance. The Company does not expect the adoption of Update 2014-08 to have a material impact on the Company's consolidated financial results.
	In May 2014, the FASB issued Accounting Standards Update 2014-09, "Revenue from Contracts with Customers" (Topic 606). The update clarifies the principles for recognizing revenue and develops a common standard for U.S. Generally Accepted Accounting Principles and International Financial Reporting Standards. More specifically, the core principle of the guidance is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The amendments in Topic 606 are effective for annual reporting periods beginning after December 15, 2016, including interim periods within that reporting period. Early adoption is not permitted. The Company is currently evaluating the impact of adopting the new standard on revenue recognition and its consolidated financial statements.
	In June 2014, the FASB issued Accounting Standards Update 2014-12, "Compensation - Stock Compensation" (Topic 718). The amendments in this update require that a performance target that affects vesting and that could be achieved after the requisite service period be treated as a performance condition. The amendments in Topic 718 are effective either prospectively to all awards granted or modified after the effective date, or retrospectively to all awards with performance targets that are outstanding as of the beginning of the earliest annual period presented in the financial statements and all new or modified awards thereafter. The effective date of this pronouncement is December 15, 2015 and early adoption is permitted. The Company does not expect the adoption of Topic 718 to have a material impact on the Company's consolidated financial results.

Inventories_Tables

Inventories (Tables)	9 Months Ended
	Sep. 30, 2014
Inventory Disclosure [Abstract]	'
Schedule Of Inventories	'
	Inventories consist of the following (in thousands):
		September 30, 2014		31-Dec-13
	Raw material	$	58,788	$	52,751
	Work-in-process	11,237		11,100
	Finished goods	56,060		57,301
	Total inventories	$	126,085	$	121,152

Acquisitions_Tables

Acquisitions (Tables)	9 Months Ended
	Sep. 30, 2014
Business Combinations [Abstract]	'
Allocation Of Purchase Consideration To The Assets Acquired And Liabilities Assumed	'
	The allocation of purchase consideration to the assets acquired and liabilities assumed during 2013 are as follows (in thousands):
	Working capital	$	2,665
	Property, plant, and equipment	153
	Acquired intangible assets	2,170
	Goodwill	2,466
	Fair value of purchase consideration	$	7,454
Schedule Of Acquired Intangible Assets	'
	The intangible assets acquired in this acquisition consisted of the following (in thousands):
		Fair Value			Estimated
					Useful Life
	Trademarks	$	640		Indefinite
	Technology	260			15 years
	Customer relationships	1,130			15 years
	Non-compete agreements	140			5 years
	Total	$	2,170
Schedule of acquisition related costs	'
	All acquisition related costs (including the gain recognized as a result of the calculation of the earn-out obligation at fair value) consisted of the following (in thousands):
		Three Months Ended					Nine Months Ended
		September 30,					September 30,
		2014			2013		2014			2013
	Selling, general and administrative costs	$	(781	)	$	76	$	(1,521	)	$	196
	Cost of sales	—			69		206			272
	Total acquisition related costs	$	(781	)	$	145	$	(1,315	)	$	468

Goodwill_and_Related_Intangibl1

Goodwill and Related Intangible Assets (Tables)	9 Months Ended
	Sep. 30, 2014
Goodwill and Intangible Assets Disclosure [Abstract]	'
Schedule Of Changes In Carrying Amount Of Goodwill	'
	The changes in the carrying amount of goodwill for the nine months ended September 30, 2014 are as follows (in thousands):
		Residential		Industrial and			Total
		Products		Infrastructure
				Products
	Balance at December 31, 2013	$	195,520	$	145,654		$	341,174
	Foreign currency translation	—		(292		)	(292		)
	Balance at September 30, 2014	$	195,520	$	145,362		$	340,882
Schedule Of Acquired Intangible Assets	'
	Acquired intangible assets consist of the following (in thousands):
		30-Sep-14					31-Dec-13
		Gross		Accumulated			Gross			Accumulated		Estimated Life
		Carrying		Amortization			Carrying			Amortization
		Amount					Amount
	Indefinite-lived intangible assets:
	Trademarks	$	45,576	$	—		$	45,724		$	—	Indefinite
	Finite-lived intangible assets:
	Trademarks	3,937		1,732			3,989			1,420		2 to 15 Years
	Unpatented technology	24,690		8,321			24,690			6,980		5 to 20 Years
	Customer relationships	53,763		31,069			54,171			28,926		5 to 16 Years
	Non-compete agreements	1,937		1,522			1,937			1,408		4 to 10 Years
	Backlog	1,330		1,330			1,330			1,330		1 to 2 Years
		85,657		43,974			86,117			40,064
	Total acquired intangible assets	$	131,233	$	43,974		$	131,841		$	40,064
Schedule of Acquired Intangible Asset Amortization Expense	'
	The following table summarizes the acquired intangible asset amortization expense for the three and nine months ended September 30 (in thousands):
		Three Months Ended					Nine Months Ended
		September 30,					September 30,
		2014		2013			2014			2013
	Amortization expense	$	1,425	$	1,622		$	4,299		$	5,018
Schedule Of Amortization Expense	'
	Amortization expense related to acquired intangible assets for the remainder of fiscal 2014 and the next five years thereafter is estimated as follows (in thousands):
	2014	$1,422
	2015	$5,581
	2016	$4,246
	2017	$4,883
	2018	$4,321
	2019	$3,650

Related_Party_Transactions_Tab

Related Party Transactions (Tables)	9 Months Ended
	Sep. 30, 2014
Related Party Transactions [Abstract]	'
Schedule Of Related Party Legal Services	'
	For the three and nine months ended September 30, 2014 and 2013, the Company incurred the following costs for legal services from this firm, including services provided in 2013 in connection with the note refinancing and classified as deferred financing costs (in thousands):
		Three Months Ended				Nine Months Ended
		September 30,				September 30,
		2014		2013		2014		2013
	Selling, general, and administrative expense	$	339	$	579	$	974	$	1,014
	Capitalized as deferred financing costs	—		—		—		223
	Total related-party legal costs	$	339	$	579	$	974	$	1,237

LongTerm_Debt_Tables

Long-Term Debt (Tables)	9 Months Ended
	Sep. 30, 2014
Long-term Debt, Unclassified [Abstract]	'
Schedule Of Long-Term Debt	'
	Long-term debt consists of the following (in thousands):
		September 30, 2014		31-Dec-13
	Senior Subordinated 6.25% Notes	$	210,000	$	210,000
	Other debt	3,600		4,007
	Total debt	213,600		214,007
	Less current maturities	400		409
	Total long-term debt	$	213,200	$	213,598

Accumulated_Other_Comprehensiv1

Accumulated Other Comprehensive Income (Tables)	9 Months Ended
	Sep. 30, 2014
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]	'
Schedule Of Components Of Accumulated Other Comprehensive Loss	'
	The cumulative balance of each component of accumulated other comprehensive loss, net of tax, is as follows (in thousands):
		Foreign Currency			Cash Flow Hedges			Minimum Pension		Unamortized Post Retirement Health			Total Pre-Tax Amount			Tax (Benefit) Expense			Accumulated  Other
		Translation						Liability		Care Costs									Comprehensive
		Adjustment						Adjustment											Loss
	Balance at December 31, 2013	$	(2,201	)	$	—		$	76	$	(2,256	)	$	(4,381	)	$	(796	)	$	(3,585	)
	Unrealized loss on cash flow hedge	—			(555		)	—		—			(555		)	(203		)	(352		)
	Realized gain on cash flow hedge	—			173			—		—			173			63			110
	Minimum pension and post retirement health care plan adjustments	—			—			11		91			102			40			62
	Foreign currency translation loss	(2,096		)	—			—		—			(2,096		)	—			(2,096		)
	Balance at September 30, 2014	$	(4,297	)	$	(382	)	$	87	$	(2,165	)	$	(6,757	)	$	(896	)	$	(5,861	)

EquityBased_Compensation_Table

Equity-Based Compensation (Tables)	9 Months Ended
	Sep. 30, 2014
Share-based Compensation [Abstract]	'
Schedule Of Number Of Awards And Weighted Average Grant Date Fair Value	'
	The following table provides the number of restricted stock units (that will convert to shares upon vesting) and restricted shares that were issued during the nine months ended September 30, along with the weighted average grant date fair value of each award:
		2014							2013
	Awards	Number of			Weighted				Number of			Weighted
		Awards			Average				Awards			Average
					Grant Date							Grant Date
					Fair Value							Fair Value
	Restricted stock units	168,857			$	17.17			78,405			$	12.86
	Restricted shares	21,721			$	16.76			13,188			$	16.83
Schedule Of Compensation Expense Recognized From Change In Fair Value And Vesting Of Performance Stock Units	'
	The following table summarizes the compensation expense recognized for the performance stock units for the three and nine months ended September 30, (in thousands):
		Three Months Ended								Nine Months Ended
		September 30,								September 30,
		2014				2013				2014				2013
	Performance stock unit compensation (recovery) expense	$	(261	)		$	(1,414	)		$	45			$	683

Derivative_Instruments_and_Hed1

Derivative Instruments and Hedging Activities (Tables)	9 Months Ended
	Sep. 30, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
Derivatives not designated as hedging instruments	'
	The (gains) losses recognized for the three and nine months ended September 30, are as follows (in thousands):
		Three Months Ended							Nine Months Ended
		September 30,							September 30,
	Derivatives not designated as hedging instruments	2014				2013			2014			2013
	Commodity options	$	(153	)		$	—		$	119		$	—
	Foreign exchange forwards	(237		)		—			(237		)	—
	Foreign exchange options (1)	(303		)		—			(303		)	—
	Total non-designated derivative realized (gain) loss, net	$	(693	)		$	—		$	(421	)	$	—
Fair value of derivatives	'
	Summary of Derivatives
	Derivatives consist of the following (in thousands):
					September 30, 2014			December 31, 2013
	Derivatives designated as hedging instruments		Classification		Fair Value			Fair Value
	Foreign exchange forward		Other current assets		$	82		$	—
			Total assets		$	82		$	—
	Derivatives not designated as hedging instruments
	Commodity options		Other current assets		$	941		$	—
	Commodity options		Other assets		582			—
	Foreign exchange forwards		Other current assets		165			—
	Foreign exchange options		Other current assets		786			—
	Foreign exchange options		Other assets		684			—
			Total assets		$	3,158		$	—

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2014
Fair Value Disclosures [Abstract]	'
Fair Value of Assets (Liabilities)	'
	The following table sets forth by level, within the fair value hierarchy, our assets (liabilities) carried at fair value as of September 30, 2014 and December 31, 2013 (in thousands):
			September 30, 2014
		Classification	Level 1		Level 2		Level 3		Total
	Carried at fair value
	Contingent consideration liability	Accrued expenses	$	—	$	—	$	410	$	410
	Foreign currency exchange forwards	Other current assets	—		247		—		247
	Foreign currency exchange options	Other current assets	—		786		—		786
	Foreign currency exchange options	Other assets	—		684		—		684
	Commodity instruments	Other current assets	—		941		—		941
	Commodity instruments	Other assets	—		582		—		582
	Disclosed at fair value
	Senior Subordinated 6.25% Notes	Long-term debt	$	217	$	—	$	—	$	217
			December 31, 2013
		Classification	Level 1		Level 2		Level 3		Total
	Carried at fair value
	Contingent consideration liability	Accrued expenses	$	—	$	—	$	1,864	$	1,864
	Disclosed at fair value
	Senior Subordinated 6.25% Notes	Long-term debt	$	220,825	$	—	$	—	$	220,825

Exit_Activity_Costs_and_Asset_1

Exit Activity Costs and Asset Impairments (Tables)	9 Months Ended
	Sep. 30, 2014
Restructuring and Related Activities [Abstract]	'
Summary Of Exit Activity Costs And Asset Impairments By Segment	'
	The following table provides a summary of asset impairments and exit activity costs incurred by segment during the three and nine months ended September 30, (in thousands):
		Three Months Ended						Nine Months Ended
		September 30,						September 30,
		2014			2013			2014		2013
	Residential Products	$	487		$	1,341		$	632	$	2,051
	Industrial and Infrastructure Products	175			—			634		75
	Total exit activity costs	$	662		$	1,341		$	1,266	$	2,126
Summary Of Exit Activity Costs And Asset Impairments	'
	The following table provides a summary of where the asset impairments and exit activity costs were recorded in the statement of operations for the three and nine months ended September 30, (in thousands):
		Three Months Ended						Nine Months Ended
		September 30,						September 30,
		2014			2013			2014		2013
	Cost of sales	$	378		$	1,341		$	580	$	2,051
	Selling, general, and administrative expense	284			—			686		75
	Total exit activity costs	$	662		$	1,341		$	1,266	$	2,126
Reconciliation Of Liability For Exit Activity Costs Relating To Facility Consolidation Efforts	'
	The following table reconciles the beginning and ending liability for exit activity costs relating to the Company’s facility consolidation efforts (in thousands):
		2014			2013
	Balance at January 1	$	1,092		$	1,323
	Exit activity costs recognized	1,820			498
	Cash payments	(2,275		)	(947		)
	Balance at September 30	$	637		$	874

Income_Taxes_Tables

Income Taxes (Tables)	9 Months Ended
	Sep. 30, 2014
Income Tax Disclosure [Abstract]	'
Summary Of Provision For Income Taxes For Continuing Operations	'
	The following table summarizes the provision for income taxes for continuing operations for the three and nine months ended September 30, and the applicable effective tax rates (in thousands):
		Three Months Ended						Nine Months Ended
		September 30,						September 30,
		2014			2013			2014			2013
	Provision of income taxes	$	5,828		$	3,813		$	8,666		$	6,428
	Effective tax rate	37.8		%	(38.5		)%	38.4		%	(200.2		)%

Net_Earnings_Per_Share_Tables

Net Earnings Per Share (Tables)	9 Months Ended
	Sep. 30, 2014
Earnings Per Share [Abstract]	'
Schedule Of Computation Of Basic And Diluted Loss Per Share	'
	The following table sets forth the computation of basic and diluted earnings per share for the three and nine months ended September 30, (in thousands):
		Three Months Ended						Nine Months Ended
		September 30,						September 30,
		2014			2013			2014			2013
	Numerator:
	Income (loss) from continuing operations	$	9,571		$	(13,727	)	$	13,916		$	(9,638	)
	Loss from discontinued operations	(31		)	—			(31		)	(4		)
	Net income (loss) available to common shareholders	$	9,540		$	(13,727	)	$	13,885		$	(9,642	)
	Denominator for basic earnings per share:
	Weighted average shares outstanding	31,083			30,946			31,046			30,916
	Denominator for diluted earnings per share:
	Weighted average shares outstanding	31,083			30,946			31,046			30,916
	Common stock options and restricted stock	215			—			210			—
	Weighted average shares and conversions	$	31,298		$	30,946		$	31,256		$	30,916

Segment_Information_Tables

Segment Information (Tables)	9 Months Ended
	Sep. 30, 2014
Segment Reporting Information, Revenue for Reportable Segment [Abstract]	'
Reconciliation Of Sales To Earnings Before Income Taxes by Segment	'
	The following table sets forth the reconciliation of sales to earnings before income taxes by segment for the three and nine months ended September 30, (in thousands):
		Three Months Ended						Nine Months Ended
		September 30,						September 30,
		2014			2013			2014			2013
	Net sales:
	Residential Products	$	122,100		$	108,424		$	326,483		$	308,536
	Industrial and Infrastructure Products	112,329			109,645			334,613			331,689
	Less: Intersegment sales	(328		)	(657		)	(1,003		)	(1,493		)
		112,001			108,988			333,610			330,196
	Total consolidated net sales	$	234,101		$	217,412		$	660,093		$	638,732
	Income (loss) from operations:
	Residential Products	$	13,694		$	10,068		$	26,740		$	29,925
	Industrial and Infrastructure Products	6,574			(13,876		)	15,727			724
	Unallocated Corporate Expenses	(1,876		)	(2,344		)	(9,069		)	(15,322		)
	Total income (loss) from operations	$	18,392		$	(6,152	)	$	33,398		$	15,327

Supplemental_Financial_Informa1

Supplemental Financial Information (Tables)	9 Months Ended
	Sep. 30, 2014
Condensed Financial Information of Parent Company Only Disclosure [Abstract]	'
Schedule Of Consolidating Statements Of Operations	'
	GIBRALTAR INDUSTRIES, INC.
	CONSOLIDATING STATEMENTS OF OPERATIONS
	THREE MONTHS ENDED SEPTEMBER 30, 2014
	(in thousands)
		Gibraltar			Guarantor			Non-Guarantor			Eliminations			Total
		Industries, Inc.			Subsidiaries			Subsidiaries
	Net sales	$	—		$	216,132		$	22,151		$	(4,182	)	$	234,101
	Cost of sales	—			176,955			19,496			(3,928		)	192,523
	Gross profit	—			39,177			2,655			(254		)	41,578
	Selling, general, and administrative expense	29			21,592			1,565			—			23,186
	(Loss) income from operations	(29		)	17,585			1,090			(254		)	18,392
	Interest expense (income)	3,402			291			(36		)	—			3,657
	Other expense (income)	42			(733		)	27			—			(664		)
	(Loss) income before taxes	(3,473		)	18,027			1,099			(254		)	15,399
	(Benefit of) provision for income taxes	(1,208		)	6,791			245			—			5,828
	(Loss) income from continuing operations	(2,265		)	11,236			854			(254		)	9,571
	Discontinued operations:
	Loss from discontinued operations before taxes	—			(51		)	—			—			(51		)
	Benefit of income taxes	—			(20		)	—			—			(20		)
	Loss from discontinued operations	—			(31		)	—			—			(31		)
	Equity in earnings from subsidiaries	12,059			854			—			(12,913		)	—
	Net income	$	9,794		$	12,059		$	854		$	(13,167	)	$	9,540
	GIBRALTAR INDUSTRIES, INC.
	CONSOLIDATING STATEMENTS OF OPERATIONS
	THREE MONTHS ENDED SEPTEMBER 30, 2013
	(in thousands)
		Gibraltar			Guarantor			Non-Guarantor			Eliminations			Total
		Industries, Inc.			Subsidiaries			Subsidiaries
	Net sales	$	—		$	200,349		$	23,060		$	(5,997	)	$	217,412
	Cost of sales	—			160,676			20,715			(5,741		)	175,650
	Gross profit	—			39,673			2,345			(256		)	41,762
	Selling, general, and administrative expense	4			22,933			1,817			—			24,754
	Intangible asset impairment	—			1,000			22,160			—			23,160
	(Loss) income from operations	(4		)	15,740			(21,632		)	(256		)	(6,152		)
	Interest expense (income)	3,486			372			(30		)	—			3,828
	Other income	—			(66		)	—			—			(66		)
	(Loss) income before taxes	(3,490		)	15,434			(21,602		)	(256		)	(9,914		)
	(Benefit of) provision for income taxes	(1,248		)	4,781			280			—			3,813
	(Loss) income from continuing operations	(2,242		)	10,653			(21,882		)	(256		)	(13,727		)
	Equity in earnings from subsidiaries	(11,229		)	(21,882		)	—			33,111			—
	Net (loss) income	$	(13,471	)	$	(11,229	)	$	(21,882	)	$	32,855		$	(13,727	)
	GIBRALTAR INDUSTRIES, INC.
	CONSOLIDATING STATEMENTS OF OPERATIONS
	NINE MONTHS ENDED SEPTEMBER 30, 2014
	(in thousands)
		Gibraltar			Guarantor			Non-Guarantor			Eliminations			Total
		Industries, Inc.			Subsidiaries			Subsidiaries
	Net sales	$	—		$	605,798		$	68,041		$	(13,746	)	$	660,093
	Cost of sales	—			501,323			60,163			(12,958		)	548,528
	Gross profit	—			104,475			7,878			(788		)	111,565
	Selling, general, and administrative expense	96			72,986			5,085			—			78,167
	(Loss) income from operations	(96		)	31,489			2,793			(788		)	33,398
	Interest expense (income)	10,166			927			(105		)	—			10,988
	Other expense (income)	36			(304		)	96			—			(172		)
	(Loss) income before taxes	(10,298		)	30,866			2,802			(788		)	22,582
	(Benefit of) provision for income taxes	(3,572		)	11,652			586			—			8,666
	(Loss) income from continuing operations	(6,726		)	19,214			2,216			(788		)	13,916
	Discontinued operations:
	Loss from discontinued operations before taxes	—			(51		)	—			—			(51		)
	Benefit of income taxes	—			(20		)	—			—			(20		)
	Loss from discontinued operations	—			(31		)	—			—			(31		)
	Equity in earnings from subsidiaries	21,399			2,216			—			(23,615		)	—
	Net income	$	14,673		$	21,399		$	2,216		$	(24,403	)	$	13,885
GIBRALTAR INDUSTRIES, INC.
CONSOLIDATING STATEMENTS OF OPERATIONS
NINE MONTHS ENDED SEPTEMBER 30, 2013
(in thousands)
	Gibraltar			Guarantor			Non-Guarantor			Eliminations			Total
	Industries, Inc.			Subsidiaries			Subsidiaries
Net sales	$	—		$	585,726		$	69,565		$	(16,559	)	$	638,732
Cost of sales	—			469,628			62,028			(15,569		)	516,087
Gross profit	—			116,098			7,537			(990		)	122,645
Selling, general, and administrative expense	188			78,373			5,597			—			84,158
Intangible asset impairment	—			1,000			22,160			—			23,160
(Loss) income from operations	(188		)	36,725			(20,220		)	(990		)	15,327
Interest expense (income)	17,768			1,004			(94		)	—			18,678
Other income	—			(141		)	—			—			(141		)
(Loss) income before taxes	(17,956		)	35,862			(20,126		)	(990		)	(3,210		)
(Benefit of) provision for income taxes	(6,669		)	12,392			705			—			6,428
(Loss) income from continuing operations	(11,287		)	23,470			(20,831		)	(990		)	(9,638		)
Discontinued operations:
Loss from discontinued operations before taxes	—			(7		)	—			—			(7		)
Benefit of income taxes	—			(3		)	—			—			(3		)
Loss from discontinued operations	—			(4		)	—			—			(4		)
Equity in earnings from subsidiaries	2,635			(20,831		)	—			18,196			—
Net (loss) income	$	(8,652	)	$	2,635		$	(20,831	)	$	17,206		$	(9,642	)
Schedule Of Consolidating Statements Of Comprehensive Income	'
	IBRALTAR INDUSTRIES, INC.
	CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
	THREE MONTHS ENDED SEPTEMBER 30, 2014
	(in thousands)
		Gibraltar			Guarantor			Non-Guarantor			Eliminations			Total
		Industries, Inc.			Subsidiaries			Subsidiaries
	Net income	$	9,794		$	12,059		$	854		$	(13,167	)	$	9,540
	Other comprehensive income (loss):
	Foreign currency translation adjustment	—			—			(2,734		)	—			(2,734		)
	Change in unrealized gain on cash flow hedges, net of tax	—			714			—			—			714
	Adjustment to retirement benefit liability, net of tax	—			2			—			—			2
	Adjustment to post-retirement health care liability, net of tax	—			19			—			—			19
	Other comprehensive income (loss)	—			735			(2,734		)	—			(1,999		)
	Total comprehensive income (loss)	$	9,794		$	12,794		$	(1,880	)	$	(13,167	)	$	7,541
	GIBRALTAR INDUSTRIES, INC.
	CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
	THREE MONTHS ENDED SEPTEMBER 30, 2013
	(in thousands)
		Gibraltar			Guarantor			Non-Guarantor			Eliminations			Total
		Industries, Inc.			Subsidiaries			Subsidiaries
	Net loss	$	(13,471	)	$	(11,229	)	$	(21,882	)	$	32,855		$	(13,727	)
	Other comprehensive income:
	Foreign currency translation adjustment	—			—			2,539			—			2,539
	Adjustment to retirement benefit liability, net of tax	—			3			—			—			3
	Adjustment to post-retirement health care liability, net of tax	—			18			—			—			18
	Other comprehensive income	—			21			2,539			—			2,560
	Total comprehensive loss	$	(13,471	)	$	(11,208	)	$	(19,343	)	$	32,855		$	(11,167	)
	GIBRALTAR INDUSTRIES, INC.
	CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
	NINE MONTHS ENDED SEPTEMBER 30, 2014
	(in thousands)
		Gibraltar			Guarantor			Non-Guarantor			Eliminations			Total
		Industries, Inc.			Subsidiaries			Subsidiaries
	Net income	$	14,673		$	21,399		$	2,216		$	(24,403	)	$	13,885
	Other comprehensive loss:
	Foreign currency translation adjustment	—			—			(2,096		)	—			(2,096		)
	Change in unrealized loss on cash flow hedges, net of tax	—			(242		)	—			—			(242		)
	Adjustment to retirement benefit liability, net of tax	—			6			—			—			6
	Adjustment to post-retirement health care liability, net of tax	—			56			—			—			56
	Other comprehensive loss	—			(180		)	(2,096		)	—			(2,276		)
	Total comprehensive income	$	14,673		$	21,219		$	120		$	(24,403	)	$	11,609
	GIBRALTAR INDUSTRIES, INC.
	CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
	NINE MONTHS ENDED SEPTEMBER 30, 2013
	(in thousands)
		Gibraltar			Guarantor			Non-Guarantor			Eliminations			Total
		Industries, Inc.			Subsidiaries			Subsidiaries
	Net (loss) income	$	(8,652	)	$	2,635		$	(20,831	)	$	17,206		$	(9,642	)
	Other comprehensive income (loss):
	Foreign currency translation adjustment	—			—			(1,362		)	—			(1,362		)
	Adjustment to retirement benefit liability, net of tax	—			7			—			—			7
	Adjustment to post-retirement health care liability, net of tax	—			56			—			—			56
	Other comprehensive income (loss)	—			63			(1,362		)	—			(1,299		)
	Total comprehensive (loss) income	$	(8,652	)	$	2,698		$	(22,193	)	$	17,206		$	(10,941	)
Schedule Of Consolidating Balance Sheets	'
	GIBRALTAR INDUSTRIES, INC.
	CONSOLIDATING BALANCE SHEETS
	30-Sep-14
	(in thousands)
		Gibraltar			Guarantor			Non-Guarantor			Eliminations			Total
		Industries, Inc.			Subsidiaries			Subsidiaries
	Assets
	Current assets:
	Cash and cash equivalents	$	—		$	80,085		$	20,928		$	—		$	101,013
	Accounts receivable, net	—			108,810			11,447			—			120,257
	Intercompany balances	19,529			1,802			(21,331		)	—			—
	Inventories	—			116,874			9,211			—			126,085
	Other current assets	3,582			11,171			1,239			—			15,992
	Total current assets	23,111			318,742			21,494			—			363,347
	Property, plant, and equipment, net	—			118,000			12,819			—			130,819
	Goodwill	—			334,123			6,759			—			340,882
	Acquired intangibles	—			81,995			5,264			—			87,259
	Other assets	3,052			4,149			—			—			7,201
	Investment in subsidiaries	670,999			33,388			—			(704,387		)	—
		$	697,162		$	890,397		$	46,336		$	(704,387	)	$	929,508
	Liabilities and Shareholders’ Equity
	Current liabilities:
	Accounts payable	$	—		$	84,772		$	7,391		$	—		$	92,163
	Accrued expenses	1,322			47,958			2,751			—			52,031
	Current maturities of long-term debt	—			400			—			—			400
	Total current liabilities	1,322			133,130			10,142			—			144,594
	Long-term debt	210,000			3,200			—			—			213,200
	Deferred income taxes	—			52,862			2,282			—			55,144
	Other non-current liabilities	—			30,206			524			—			30,730
	Shareholders’ equity	485,840			670,999			33,388			(704,387		)	485,840
		$	697,162		$	890,397		$	46,336		$	(704,387	)	$	929,508
	GIBRALTAR INDUSTRIES, INC.
	CONSOLIDATING BALANCE SHEETS
	31-Dec-13
	(in thousands)
		Gibraltar			Guarantor			Non-Guarantor			Eliminations			Total
		Industries, Inc.			Subsidiaries			Subsidiaries
	Assets
	Current assets:
	Cash and cash equivalents	$	—		$	75,856		$	21,183		$	—		$	97,039
	Accounts receivable, net	—			79,356			10,726			—			90,082
	Intercompany balances	23,618			(1,655		)	(21,963		)	—			—
	Inventories	—			111,676			9,476			—			121,152
	Other current assets	7,578			5,722			827			—			14,127
	Total current assets	31,196			270,955			20,249			—			322,400
	Property, plant, and equipment, net	—			119,587			12,165			—			131,752
	Goodwill	—			334,123			7,051			—			341,174
	Acquired intangibles	—			86,014			5,763			—			91,777
	Other assets	3,415			3,643			1			—			7,059
	Investment in subsidiaries	652,689			33,259			—			(685,948		)	—
		$	687,300		$	847,581		$	45,229		$	(685,948	)	$	894,162
	Liabilities and Shareholders’ Equity
	Current liabilities:
	Accounts payable	$	—		$	62,464		$	7,161		$	—		$	69,625
	Accrued expenses	5,551			42,418			1,910			—			49,879
	Current maturities of long-term debt	—			409			—			—			409
	Total current liabilities	5,551			105,291			9,071			—			119,913
	Long-term debt	210,000			3,598			—			—			213,598
	Deferred income taxes	—			52,746			2,378			—			55,124
	Other non-current liabilities	—			33,257			521			—			33,778
	Shareholders’ equity	471,749			652,689			33,259			(685,948		)	471,749
		$	687,300		$	847,581		$	45,229		$	(685,948	)	$	894,162
Schedule Of Condensed Consolidating Statements Of Cash Flows	'
	GIBRALTAR INDUSTRIES, INC.
	CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS
	NINE MONTHS ENDED SEPTEMBER 30, 2014
	(in thousands)
		Gibraltar			Guarantor			Non-Guarantor			Eliminations			Total
		Industries, Inc.			Subsidiaries			Subsidiaries
	Cash Flows from Operating Activities
	Net cash (used in) provided by operating activities of continuing operations	$	(13,297	)	$	27,470		$	4,012		$	—		$	18,185
	Net cash used in operating activities of discontinued operations	—			(40		)	—			—			(40		)
	Net cash (used in) provided by operating activities	$	(13,297	)	$	27,430		$	4,012		$	—		$	18,145
	Cash Flows from Investing Activities
	Purchases of property, plant, and equipment	—			(16,297		)	(2,883		)	—			(19,180		)
	Other investing activities	—			121			—			—			121
	Net proceeds from sale of property and equipment	—			5,955			3			—			5,958
	Net cash used in investing activities	—			(10,221		)	(2,880		)	—			(13,101		)
	Cash Flows from Financing Activities
	Long-term debt payments	—			(407		)	—			—			(407		)
	Purchase of treasury stock at market prices	(505		)	—			—			—			(505		)
	Net proceeds from issuance of common stock	508			—			—			—			508
	Intercompany financing	13,195			(12,573		)	(622		)	—			—
	Excess tax benefit from stock compensation	99			—			—			—			99
	Net cash provided by (used in) financing activities	13,297			(12,980		)	(622		)	—			(305		)
	Effect of exchange rate changes on cash	—			—			(765		)	—			(765		)
	Net increase (decrease) in cash and cash equivalents	—			4,229			(255		)	—			3,974
	Cash and cash equivalents at beginning of year	—			75,856			21,183			—			97,039
	Cash and cash equivalents at end of period	$	—		$	80,085		$	20,928		$	—		$	101,013
	GIBRALTAR INDUSTRIES, INC.
	CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS
	NINE MONTHS ENDED SEPTEMBER 30, 2013
	(in thousands)
		Gibraltar			Guarantor			Non-Guarantor			Eliminations			Total
		Industries, Inc.			Subsidiaries			Subsidiaries
	Cash Flows from Operating Activities
	Net cash (used in) provided by operating activities of continuing operations	$	(9,040	)	$	44,203		$	2,753		$	—		$	37,916
	Net cash used in operating activities of discontinued operations	—			(9		)	—			—			(9		)
	Net cash (used in) provided by operating activities	(9,040		)	44,194			2,753			—			37,907
	Cash Flows from Investing Activities
	Purchases of property, plant, and equipment	—			(6,196		)	(2,620		)	—			(8,816		)
	Cash paid for acquisitions, net of cash acquired	—			(5,344		)	—			—			(5,344		)
	Net proceeds from sale of property and equipment	—			12,434			13			—			12,447
	Net cash provided by (used in) investing activities	—			894			(2,607		)	—			(1,713		)
	Cash Flows from Financing Activities
	Long-term debt payments	(204,000		)	(1,084		)	—			—			(205,084		)
	Proceeds from long-term debt	210,000			—			—			—			210,000
	Payment of note redemption fees	(3,702		)	—			—			—			(3,702		)
	Purchase of treasury stock at market prices	(642		)	—			—			—			(642		)
	Payment of deferred financing costs	(3,858		)	—			—			—			(3,858		)
	Net proceeds from issuance of common stock	342			—			—			—			342
	Intercompany financing	10,838			(10,211		)	(627		)	—			—
	Excess tax benefit from stock compensation	62			—			—			—			62
	Net cash provided by (used in) financing activities	9,040			(11,295		)	(627		)	—			(2,882		)
	Effect of exchange rate changes on cash	—			—			(492		)	—			(492		)
	Net increase (decrease) in cash and cash equivalents	—			33,793			(973		)	—			32,820
	Cash and cash equivalents at beginning of year	—			26,163			21,865			—			48,028
	Cash and cash equivalents at end of period	$	—		$	59,956		$	20,892		$	—		$	80,848

Inventories_Schedule_Of_Invent

Inventories (Schedule Of Inventories) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Inventory Disclosure [Abstract]	'	'
Raw material	$58,788	$52,751
Work-in-process	11,237	11,100
Finished goods	56,060	57,301
Total inventories	$126,085	$121,152

Acquisitions_Narrative_Details

Acquisitions (Narrative) (Details) (USD $)

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2014

September 2013 Acquisition

September 2013 Acquisition

September 2013 Acquisition

September 2013 Acquisition

September 2013 Acquisition

Selling, general and administrative costs

Selling, general and administrative costs

Selling, general and administrative costs

Selling, general and administrative costs

Interest Expense

Interest Expense

September 2013 Acquisition

September 2013 Acquisition

September 2013 Acquisition

September 2013 Acquisition

September 2013 Acquisition

September 2013 Acquisition

Business Acquisition [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

Total acquisition related costs

'

'

'

($781,000)

$145,000

($1,315,000)

$468,000

($781,000)

$76,000

($1,521,000)

$196,000

'

'

Aggregate purchase consideration

'

'

'

'

7,454,000

'

7,454,000

'

'

'

'

'

'

Fair value of business acquisition obligation

'

'

2,322,000

'

'

410,000

'

'

'

'

'

'

'

Adjustment to payable, expense recorded

'

'

'

'

'

'

'

781,000

'

1,523,000

'

-16,000

-69,000

Goodwill

$340,882,000

$341,174,000

'

$2,466,000

$2,466,000

$2,466,000

$2,466,000

'

'

'

'

'

'

Acquisitions_Allocation_Of_Pur

Acquisitions (Allocation Of Purchase Consideration To The Assets Acquired And Liabilities Assumed) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2014	Sep. 30, 2013
			September 2013 Acquisition	September 2013 Acquisition
Business Acquisition [Line Items]	'	'	'	'
Working capital	'	'	'	$2,665,000
Property, plant, and equipment	'	'	'	153,000
Acquired intangible assets	'	'	'	2,170,000
Goodwill	340,882,000	341,174,000	2,466,000	2,466,000
Fair value of purchase consideration	'	'	'	$7,454,000

Acquisitions_Schedule_Of_Acqui

Acquisitions (Schedule Of Acquired Intangible Assets) (Details) (September 2013 Acquisition, USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014
Acquired Finite-Lived Intangible Assets [Line Items]	'
Fair Value	$2,170
Technology	'
Acquired Finite-Lived Intangible Assets [Line Items]	'
Fair Value	260
Estimated Useful Life	'15 years
Customer relationships	'
Acquired Finite-Lived Intangible Assets [Line Items]	'
Fair Value	1,130
Estimated Useful Life	'15 years
Non-compete agreements	'
Acquired Finite-Lived Intangible Assets [Line Items]	'
Fair Value	140
Estimated Useful Life	'5 years
Trademarks	'
Acquired Finite-Lived Intangible Assets [Line Items]	'
Fair Value	$640

Acquisitions_Acquisition_Relat

Acquisitions (Acquisition Related Costs) (Details) (September 2013 Acquisition, USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Business Acquisition [Line Items]	'	'	'	'
Total acquisition related costs	($781)	$145	($1,315)	$468
Selling, general and administrative costs	'	'	'	'
Business Acquisition [Line Items]	'	'	'	'
Total acquisition related costs	-781	76	-1,521	196
Cost of sales	'	'	'	'
Business Acquisition [Line Items]	'	'	'	'
Total acquisition related costs	$0	$69	$206	$272

Goodwill_and_Related_Intangibl2

Goodwill and Related Intangible Assets (Schedule Of Changes In Carrying Amount Of Goodwill) (Details) (USD $)	9 Months Ended
	Sep. 30, 2014
Goodwill [Line Items]	'
Balance at	$341,174,000
Foreign currency translation	-292,000
Balance at	340,882,000
Residential Products	'
Goodwill [Line Items]	'
Balance at	195,520,000
Foreign currency translation	0
Balance at	195,520,000
Industrial and Infrastructure Products	'
Goodwill [Line Items]	'
Balance at	145,654,000
Foreign currency translation	-292,000
Balance at	$145,362,000

Goodwill_and_Related_Intangibl3

Goodwill and Related Intangible Assets (Narrative) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract]	'	'
Accumulated impairment losses	$150,965,000	$150,965,000

Goodwill_and_Related_Intangibl4

Goodwill and Related Intangible Assets (Schedule Of Acquired Intangible Assets) (Details) (USD $)

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

In Thousands, unless otherwise specified

Trademarks

Trademarks

Unpatented technology

Unpatented technology

Customer relationships

Customer relationships

Non-compete agreements

Non-compete agreements

Backlog

Backlog

Trademarks

Trademarks

Minimum

Minimum

Minimum

Minimum

Minimum

Maximum

Maximum

Maximum

Maximum

Maximum

Trademarks

Unpatented technology

Customer relationships

Non-compete agreements

Backlog

Trademarks

Unpatented technology

Customer relationships

Non-compete agreements

Backlog

Finite-Lived Intangible Assets [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Gross Carrying Amount, Indefinite-lived intangible assets

'

'

'

'

'

'

'

'

'

'

'

'

$45,576

$45,724

'

'

'

'

'

'

'

'

'

'

Gross Carrying Amount, Finite-lived intangible assets

85,657

86,117

3,937

3,989

24,690

24,690

53,763

54,171

1,937

1,937

1,330

1,330

'

'

'

'

'

'

'

'

'

'

'

'

Total acquired intangible assets, Gross Carrying Amount

131,233

131,841

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Accumulated Amortization, Indefinite-lived intangible assets

'

'

'

'

'

'

'

'

'

'

'

'

0

0

'

'

'

'

'

'

'

'

'

'

Accumulated Amortization, Finite-lived intangible assets

43,974

40,064

1,732

1,420

8,321

6,980

31,069

28,926

1,522

1,408

1,330

1,330

'

'

'

'

'

'

'

'

'

'

'

'

Total acquired intangible assets, Accumulated Amortization

$43,974

$40,064

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Estimated Life

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'2 years

'5 years

'5 years

'4 years

'1 year

'15 years

'20 years

'16 years

'10 years

'2 years

Goodwill_and_Related_Intangibl5

Goodwill and Related Intangible Assets (Schedule Of Amortization Expense) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Goodwill and Intangible Assets Disclosure [Abstract]	'	'	'	'
Amortization expense	$1,425	$1,622	$4,299	$5,018
2014	1,422	'	1,422	'
2015	5,581	'	5,581	'
2016	4,246	'	4,246	'
2017	4,883	'	4,883	'
2018	4,321	'	4,321	'
2019	$3,650	'	$3,650	'

Related_Party_Transactions_Nar

Related Party Transactions (Narrative) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013	Dec. 31, 2014
			Scenario, Forecast
Related Party Transaction [Line Items]	'	'	'
Accounts payable	$338,000	$296,000	'
Monthly consulting agreement fee	'	'	$10,000

Related_Party_Transactions_Sch

Related Party Transactions (Schedule Of Related Party Legal Expense) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Related Party Transactions [Abstract]	'	'	'	'
Selling, general, and administrative expense	$339	$579	$974	$1,014
Capitalized as deferred financing costs	'	0	0	223
Total related-party legal costs	$339	$579	$974	$1,237

LongTerm_Debt_Schedule_Of_Long

Long-Term Debt (Schedule Of Long-Term Debt) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013	Mar. 31, 2013
Debt Instrument [Line Items]	'	'	'
Total debt	$213,600,000	$214,007,000	'
Less current maturities	400,000	409,000	'
Total long-term debt	213,200,000	213,598,000	'
Senior Subordinated 6.25% Notes	'	'	'
Debt Instrument [Line Items]	'	'	'
Total debt	210,000,000	210,000,000	'
Senior Subordinated Notes, interest rate	6.25%	'	6.25%
Other debt	'	'	'
Debt Instrument [Line Items]	'	'	'
Total debt	$3,600,000	$4,007,000	'

LongTerm_Debt_Narrative_Detail

Long-Term Debt (Narrative) (Details) (USD $)	9 Months Ended	3 Months Ended	9 Months Ended	3 Months Ended			9 Months Ended
	Sep. 30, 2014	Mar. 31, 2013	Sep. 30, 2014	Mar. 31, 2013	Sep. 30, 2014	Jan. 31, 2013	Sep. 30, 2014	Sep. 30, 2014
	Senior Credit Agreement	Senior Subordinated 8% Notes, Due December 1, 2015	Revolving Credit Facility	Senior Subordinated 6.25% Notes	Senior Subordinated 6.25% Notes	Senior Subordinated 6.25% Notes	London Interbank Offering Rate (LIBOR)	London Interbank Offering Rate (LIBOR)
							Minimum	Maximum
							Revolving Credit Facility	Revolving Credit Facility
Debt Instrument [Line Items]	'	'	'	'	'	'	'	'
Debt instrument, issuance date	'	'	'	31-Jan-13	'	'	'	'
Debt instrument, issued value	'	$204,000,000	'	'	'	$210,000,000	'	'
Senior Subordinated Notes, interest rate	'	8.00%	'	6.25%	6.25%	'	'	'
Debt instrument, maturity date	'	'	'	1-Feb-21	'	'	'	'
Loss on extinguishment of debt	'	7,166,000	'	'	'	'	'	'
Prepayment premium for extinguishment of debt	'	3,702,000	'	'	'	'	'	'
Write-off deferred financing fees	'	2,199,000	'	'	'	'	'	'
Write off of debt discount	'	1,265,000	'	'	'	'	'	'
Placement and other fees	'	'	'	3,755,000	'	'	'	'
Maximum borrowing capacity under the revolving credit facility	200,000,000	'	'	'	'	'	'	'
Revolving credit facility, increase, additional borrowings	250,000,000	'	'	'	'	'	'	'
Revolving credit facility termination date	'	'	10-Oct-16	'	'	'	'	'
LIBOR floor, plus	'	'	'	'	'	'	2.00%	2.50%
Revolving credit facility, annual commitment fee	'	'	0.38%	'	'	'	'	'
Standby letters of credit	20,863,000	'	'	'	'	'	'	'
Revolving credit facility, availability amount	'	'	$109,321,000	'	'	'	'	'
Fixed charge coverage ratio	125.00%	'	'	'	'	'	'	'

Accumulated_Other_Comprehensiv2

Accumulated Other Comprehensive Income (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Total Pre-Tax Amount	'	'	'	'
Balance at	'	'	($4,381,000)	'
Unrealized loss on cash flow hedge	'	'	-555,000	'
Realized gain on cash flow hedge	'	'	173,000	'
Minimum pension and post retirement health care plan adjustments	'	'	102,000	'
Foreign currency translation loss	'	'	-2,096,000	'
Balance at	-6,757,000	'	-6,757,000	'
Tax (Benefit) Expense	'	'	'	'
Balance at	'	'	-796,000	'
Unrealized loss on cash flow hedge	'	'	-203,000	'
Realized gain on cash flow hedge	'	'	63,000	'
Minimum pension and post retirement health care plan adjustments	'	'	40,000	'
Foreign currency translation loss	'	'	0	'
Balance at	-896,000	'	-896,000	'
Accumulated Other Comprehensive Loss	'	'	'	'
Balance at	'	'	-3,585,000	'
Unrealized loss on cash flow hedge	'	'	-352,000	'
Realized gain on cash flow hedge	'	'	110,000	'
Minimum pension and post retirement health care plan adjustments	'	'	62,000	'
Foreign currency translation loss	-2,734,000	2,539,000	-2,096,000	-1,362,000
Balance at	-5,861,000	'	-5,861,000	'
Net amount of existing unrealized loss on cash flow hedges expected to be reclassified into earnings	'	'	382,000	'
Foreign Currency Translation Adjustment	'	'	'	'
Total Pre-Tax Amount	'	'	'	'
Balance at	'	'	-2,201,000	'
Unrealized loss on cash flow hedge	'	'	0	'
Realized gain on cash flow hedge	'	'	0	'
Minimum pension and post retirement health care plan adjustments	'	'	0	'
Foreign currency translation loss	'	'	-2,096,000	'
Balance at	-4,297,000	'	-4,297,000	'
Cash Flow Hedges	'	'	'	'
Total Pre-Tax Amount	'	'	'	'
Balance at	'	'	0	'
Unrealized loss on cash flow hedge	'	'	-555,000	'
Realized gain on cash flow hedge	'	'	173,000	'
Minimum pension and post retirement health care plan adjustments	'	'	0	'
Foreign currency translation loss	'	'	0	'
Balance at	-382,000	'	-382,000	'
Minimum Pension Liability Adjustment	'	'	'	'
Total Pre-Tax Amount	'	'	'	'
Balance at	'	'	76,000	'
Unrealized loss on cash flow hedge	'	'	0	'
Realized gain on cash flow hedge	'	'	0	'
Minimum pension and post retirement health care plan adjustments	'	'	11,000	'
Foreign currency translation loss	'	'	0	'
Balance at	87,000	'	87,000	'
Unamortized Post Retirement Health Care Costs	'	'	'	'
Total Pre-Tax Amount	'	'	'	'
Balance at	'	'	-2,256,000	'
Unrealized loss on cash flow hedge	'	'	0	'
Realized gain on cash flow hedge	'	'	0	'
Minimum pension and post retirement health care plan adjustments	'	'	91,000	'
Foreign currency translation loss	'	'	0	'
Balance at	($2,165,000)	'	($2,165,000)	'

EquityBased_Compensation_Narra

Equity-Based Compensation (Narrative) (Details) (USD $)

9 Months Ended

12 Months Ended

3 Months Ended

9 Months Ended

12 Months Ended

9 Months Ended

12 Months Ended

12 Months Ended

Sep. 30, 2014

Sep. 30, 2013

Dec. 31, 2013

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2013

Dec. 31, 2013

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Dec. 31, 2013

Dec. 31, 2012

Sep. 30, 2014

Jan. 31, 2012

Dec. 31, 2013

Sep. 30, 2014

Jan. 31, 2013

Jan. 31, 2014

Sep. 30, 2014

Former President and Chief Operating Officer

2005 Equity Incentive Plan

Performance Stock Units

Management Stock Purchase Plan

Management Stock Purchase Plan

Management Stock Purchase Plan

Minimum

Maximum

Unvested Restricted Stock Units

Unvested Restricted Stock Units

Awarded January 2012

Awarded January 2012

Awarded January 2012

Awarded January 2013

Awarded January 2013

Awarded January 2013

Awarded January 2014

Awarded June 2014

Performance Stock Units

Performance Stock Units

Performance Stock Units

Performance Stock Units

Performance Stock Units

Performance Stock Units

Performance Stock Units

Performance Stock Units

Performance Stock Units

Performance Stock Units

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Typical vesting period, in years

'4 years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Maximum number of shares that may be issued under the Plan

'

'

'

'

3,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Maximum number of shares that may be issued in connection with grants of incentive stock options and rights

'

'

'

'

900,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Performance stock units outstanding

'

'

'

'

'

'

'

'

'

'

'

'

'

'

280,000

295,000

'

237,000

304,000

212,000

19,000

Performance stock unit grant-date fair value

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$4,152,000

'

'

$4,123,000

$3,914,000

$319,000

Percentage of target performance stock units earned

'

'

'

'

'

'

'

'

'

'

'

'

'

58.30%

'

'

50.00%

'

'

'

'

Performance stock units earned

'

'

'

'

'

'

'

'

'

'

'

'

'

163,200

'

'

114,000

'

'

'

'

Performance stock units target awards

'

'

'

'

'

'

'

'

'

'

'

'

'

280,000

'

'

237,000

'

'

'

'

Performance stock unit vesting period

'

'

'

'

'

'

'

'

'

'1 year

'3 years

'

'

'

'

'

'

'

'

'

'

MSPP company matching portion, vesting age

'60 years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Years of service

'

'

'

'

'

'5 years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Average closing price, number of days trailing

'

'

'

'

'

'90 days

'200 days

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Accrues interest

'

'

'

'

'

'

2.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of restricted stock units credited to participant accounts

731,597

'

614,888

'

'

'

116,708

121,488

'

'

'

62,349

47,268

'

'

'

'

'

'

'

'

Weighted average fair value of per unit awarded

'

'

'

'

'

'

$16.73

'

$15.97

'

'

'

'

'

'

'

'

'

'

'

'

Disbursements of MSPP

'

$531,000

'

$2,120,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

EquityBased_Compensation_Sched

Equity-Based Compensation (Schedule Of Number Of Awards And Weighted Average Grant Date Fair Value) (Details) (USD $)	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Restricted stock units	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Number of Awards	168,857	78,405
Weighted Average Grant Date Fair Value	$17.17	$12.86
Restricted shares	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Number of Awards	21,721	13,188
Weighted Average Grant Date Fair Value	$16.76	$16.83

EquityBased_Compensation_Sched1

Equity-Based Compensation (Schedule Of Compensation Expense Recognized From Change In Fair Value And Vesting Of Performance Stock Units) (Details) (Performance Stock Units, USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Performance Stock Units	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Performance stock unit compensation (recovery) expense	($261)	($1,414)	$45	$683

Derivative_Instruments_and_Hed2

Derivative Instruments and Hedging Activities (Narrative) (Details) (USD $)	3 Months Ended				9 Months Ended
	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013
Derivative [Line Items]	'		'		'		'
Maturity period	'		'		'2 years		'
Derivatives designated as hedging instruments | Foreign exchange forward	'		'		'		'
Derivative [Line Items]	'		'		'		'
Notional amount	$5,600,000		'		$5,600,000		'
Derivatives not designated as hedging instruments	'		'		'		'
Derivative [Line Items]	'		'		'		'
Total non-designated derivative realized (gain) loss, net	-693,000		0		-421,000		0
Derivatives not designated as hedging instruments | Foreign exchange forward	'		'		'		'
Derivative [Line Items]	'		'		'		'
Notional amount	11,200,000		'		11,200,000		'
Total non-designated derivative realized (gain) loss, net	-237,000		0		-237,000		0
Derivatives not designated as hedging instruments | Foreign exchange forward	'		'		'		'
Derivative [Line Items]	'		'		'		'
Notional amount	94,000,000		'		94,000,000		'
Total non-designated derivative realized (gain) loss, net	-303,000	[1]	0	[1]	-303,000	[1]	0	[1]
Derivatives not designated as hedging instruments | Commodity options	'		'		'		'
Derivative [Line Items]	'		'		'		'
Notional amount	12,600,000		'		12,600,000		'
Total non-designated derivative realized (gain) loss, net	-153,000		0		119,000		0
Cash Flow Hedges | Derivatives not designated as hedging instruments | Foreign exchange forward	'		'		'		'
Derivative [Line Items]	'		'		'		'
Total non-designated derivative realized (gain) loss, net	'		'		$321,000	[1]	'
[1]	Includes a loss of $321,000 for the discontinuation of cash flow hedges for which the forecasted transactions are not expected to occur within the originally forecasted time frame.

Derivative_Instruments_and_Hed3

Derivative Instruments and Hedging Activities (Derivatives Not Designated as Hedging Instruments) (Details) (Derivatives not designated as hedging instruments, USD $)	3 Months Ended				9 Months Ended
	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013
Derivative [Line Items]	'		'		'		'
Total non-designated derivative realized (gain) loss, net	($693,000)		$0		($421,000)		$0
Commodity options	'		'		'		'
Derivative [Line Items]	'		'		'		'
Notional amount	12,600,000		'		12,600,000		'
Total non-designated derivative realized (gain) loss, net	-153,000		0		119,000		0
Foreign exchange forward	'		'		'		'
Derivative [Line Items]	'		'		'		'
Notional amount	11,200,000		'		11,200,000		'
Total non-designated derivative realized (gain) loss, net	-237,000		0		-237,000		0
Foreign exchange forward	'		'		'		'
Derivative [Line Items]	'		'		'		'
Notional amount	94,000,000		'		94,000,000		'
Total non-designated derivative realized (gain) loss, net	($303,000)	[1]	$0	[1]	($303,000)	[1]	$0	[1]
[1]	Includes a loss of $321,000 for the discontinuation of cash flow hedges for which the forecasted transactions are not expected to occur within the originally forecasted time frame.

Derivative_Instruments_and_Hed4

Derivative Instruments and Hedging Activities (Fair Value of Derivatives) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Derivatives designated as hedging instruments	'	'
Derivatives, Fair Value [Line Items]	'	'
Derivative Asset	$82	$0
Derivatives not designated as hedging instruments	'	'
Derivatives, Fair Value [Line Items]	'	'
Derivative Asset	3,158	0
Foreign exchange forward | Derivatives not designated as hedging instruments | Other current assets	'	'
Derivatives, Fair Value [Line Items]	'	'
Derivative Asset	786	0
Foreign exchange forward | Derivatives not designated as hedging instruments | Other assets	'	'
Derivatives, Fair Value [Line Items]	'	'
Derivative Asset	684	0
Commodity options | Derivatives not designated as hedging instruments | Other current assets	'	'
Derivatives, Fair Value [Line Items]	'	'
Derivative Asset	941	0
Commodity options | Derivatives not designated as hedging instruments | Other assets	'	'
Derivatives, Fair Value [Line Items]	'	'
Derivative Asset	582	0
Foreign exchange forward | Derivatives designated as hedging instruments | Other current assets	'	'
Derivatives, Fair Value [Line Items]	'	'
Derivative Asset	82	0
Foreign exchange forward | Derivatives not designated as hedging instruments | Other current assets	'	'
Derivatives, Fair Value [Line Items]	'	'
Derivative Asset	$165	$0

Fair_Value_Measurements_Detail

Fair Value Measurements (Details) (USD $)	9 Months Ended
	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2014	Dec. 31, 2013	Mar. 31, 2013
	business		Senior Subordinated 6.25% Notes	Senior Subordinated 6.25% Notes	Senior Subordinated 6.25% Notes
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]	'	'	'	'	'
Number of completed acquisitions	1	'	'	'	'
Carrying value of outstanding debt	$213,600,000	$214,007,000	$210,000,000	$210,000,000	'
Senior Subordinated Notes, interest rate	'	'	6.25%	'	6.25%

Fair_Value_Measurements_Fair_V

Fair Value Measurements (Fair Value of Assets (Liabilities)) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Contingent consideration liability | Accrued expenses	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair Value, Net Asset (Liability)	$410	$1,864
Contingent consideration liability | Accrued expenses | Level 1	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair Value, Net Asset (Liability)	0	0
Contingent consideration liability | Accrued expenses | Level 2	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair Value, Net Asset (Liability)	0	0
Contingent consideration liability | Accrued expenses | Level 3	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair Value, Net Asset (Liability)	410	1,864
Foreign exchange forward | Accrued expenses	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair Value, Net Asset (Liability)	247	'
Foreign exchange forward | Accrued expenses | Level 1	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair Value, Net Asset (Liability)	0	'
Foreign exchange forward | Accrued expenses | Level 2	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair Value, Net Asset (Liability)	247	'
Foreign exchange forward | Accrued expenses | Level 3	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair Value, Net Asset (Liability)	0	'
Foreign exchange forward | Other current assets	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair Value, Net Asset (Liability)	786	'
Foreign exchange forward | Other current assets | Level 1	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair Value, Net Asset (Liability)	0	'
Foreign exchange forward | Other current assets | Level 2	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair Value, Net Asset (Liability)	786	'
Foreign exchange forward | Other current assets | Level 3	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair Value, Net Asset (Liability)	0	'
Foreign exchange forward | Other assets	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair Value, Net Asset (Liability)	684	'
Foreign exchange forward | Other assets | Level 1	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair Value, Net Asset (Liability)	0	'
Foreign exchange forward | Other assets | Level 2	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair Value, Net Asset (Liability)	684	'
Foreign exchange forward | Other assets | Level 3	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair Value, Net Asset (Liability)	0	'
Commodity instruments | Other current assets	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair Value, Net Asset (Liability)	941	'
Commodity instruments | Other current assets | Level 1	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair Value, Net Asset (Liability)	0	'
Commodity instruments | Other current assets | Level 2	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair Value, Net Asset (Liability)	941	'
Commodity instruments | Other current assets | Level 3	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair Value, Net Asset (Liability)	0	'
Commodity instruments | Other assets	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair Value, Net Asset (Liability)	582	'
Commodity instruments | Other assets | Level 1	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair Value, Net Asset (Liability)	0	'
Commodity instruments | Other assets | Level 2	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair Value, Net Asset (Liability)	582	'
Commodity instruments | Other assets | Level 3	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair Value, Net Asset (Liability)	0	'
Senior Subordinated 6.25% Notes | Long-term debt	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair Value, Net Asset (Liability)	217	220,825
Senior Subordinated 6.25% Notes | Long-term debt | Level 1	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair Value, Net Asset (Liability)	217	220,825
Senior Subordinated 6.25% Notes | Long-term debt | Level 2	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair Value, Net Asset (Liability)	0	0
Senior Subordinated 6.25% Notes | Long-term debt | Level 3	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair Value, Net Asset (Liability)	$0	$0

Exit_Activity_Costs_and_Asset_2

Exit Activity Costs and Asset Impairments (Narrative) (Details) (USD $)	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
	facility
Restructuring and Related Activities [Abstract]	'	'
Number of consolidated facilities	2	'
Asset impairment charges related to facility consolidations	$554,000	$1,628,000

Exit_Activity_Costs_and_Asset_3

Exit Activity Costs and Asset Impairments (Summary Of Exit Activity Costs And Asset Impairments by Segment) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Restructuring Cost and Reserve [Line Items]	'	'	'	'
Total exit activity costs	$662	$1,341	$1,266	$2,126
Residential Products	'	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'	'
Total exit activity costs	487	1,341	632	2,051
Industrial and Infrastructure Products	'	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'	'
Total exit activity costs	$175	$0	$634	$75

Exit_Activity_Costs_and_Asset_4

Exit Activity Costs and Asset Impairments (Summary Of Exit Activity Costs And Asset Impairments) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Restructuring Cost and Reserve [Line Items]	'	'	'	'
Total exit activity costs	$662	$1,341	$1,266	$2,126
Cost of sales	'	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'	'
Total exit activity costs	378	1,341	580	2,051
Selling, general, and administrative expense	'	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'	'
Total exit activity costs	$284	$0	$686	$75

Exit_Activity_Costs_and_Asset_5

Exit Activity Costs and Asset Impairments (Reconciles Of Liability For Exit Activity Costs Relating To Facility Consolidation Efforts) (Details) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
Restructuring and Related Activities [Abstract]	'	'
Balance as of	$1,092	$1,323
Exit activity costs recognized	1,820	498
Cash payments	-2,275	-947
Balance as of	$637	$874

Income_Taxes_Provision_For_Inc

Income Taxes (Provision For Income Taxes For Continuing Operations) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Income Tax Disclosure [Abstract]	'	'	'	'
Provision of income taxes	$5,828	$3,813	$8,666	$6,428
Effective tax rate	37.80%	-38.50%	38.40%	-200.20%

Income_Taxes_Narrative_Details

Income Taxes (Narrative) (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Income Tax Disclosure [Abstract]	'	'	'	'
Statutory tax rate, percentage	35.00%	35.00%	35.00%	35.00%

Net_Earnings_Per_Share_Details

Net Earnings Per Share (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Share data, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Earnings Per Share [Abstract]	'	'	'	'
Income (loss) from continuing operations	$9,571	($13,727)	$13,916	($9,638)
Loss from discontinued operations	-31	0	-31	-4
Net income (loss)	$9,540	($13,727)	$13,885	($9,642)
Weighted average shares outstanding	31,083,000	30,946,000	31,046,000	30,916,000
Common stock options and restricted stock	215,000	0	210,000	0
Weighted average shares outstanding – Diluted	31,298,000	30,946,000	31,256,000	30,916,000
Antidilutive securities excluded from earnings per share calculation	'	141,752	'	165,825

Segment_Information_Details

Segment Information (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
			segment
Segment Reporting, Other Significant Reconciling Item [Line Items]	'	'	'	'
Number of reportable segments	'	'	2	'
Net sales:	$234,101	$217,412	$660,093	$638,732
Income (loss) from operations:	41,578	41,762	111,565	122,645
Unallocated Corporate Expenses	-1,876	-2,344	-9,069	-15,322
Total income (loss) from operations	18,392	-6,152	33,398	15,327
Residential Products	'	'	'	'
Segment Reporting, Other Significant Reconciling Item [Line Items]	'	'	'	'
Net sales:	122,100	108,424	326,483	308,536
Income (loss) from operations:	13,694	10,068	26,740	29,925
Industrial and Infrastructure Products	'	'	'	'
Segment Reporting, Other Significant Reconciling Item [Line Items]	'	'	'	'
Net sales:	112,329	109,645	334,613	331,689
Income (loss) from operations:	6,574	-13,876	15,727	724
Intersegment Sales	'	'	'	'
Segment Reporting, Other Significant Reconciling Item [Line Items]	'	'	'	'
Net sales:	-328	-657	-1,003	-1,493
Intersegment Elimination | Industrial and Infrastructure Products	'	'	'	'
Segment Reporting, Other Significant Reconciling Item [Line Items]	'	'	'	'
Net sales:	$112,001	$108,988	$333,610	$330,196

Supplemental_Financial_Informa2

Supplemental Financial Information (Narrative) (Details)	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2014	Mar. 31, 2013
		Senior Subordinated 6.25% Notes	Senior Subordinated 6.25% Notes
Schedule Of Supplemental Financial Information [Line Items]	'	'	'
Senior Subordinated Notes, interest rate	'	6.25%	6.25%
Ownership percentage	100.00%	'	'

Supplemental_Financial_Informa3

Supplemental Financial Information (Schedule Of Consolidating Statements Of Operations) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Schedule Of Supplemental Financial Information [Line Items]	'	'	'	'
Net Sales	$234,101	$217,412	$660,093	$638,732
Cost of sales	192,523	175,650	548,528	516,087
Gross profit	41,578	41,762	111,565	122,645
Selling, general, and administrative expense	23,186	24,754	78,167	84,158
Intangible asset impairment	0	23,160	0	23,160
Income (loss) from operations	18,392	-6,152	33,398	15,327
Interest expense	3,657	3,828	10,988	18,678
Other income	-664	-66	-172	-141
Income (loss) before taxes	15,399	-9,914	22,582	-3,210
Provision for income taxes	5,828	3,813	8,666	6,428
Income (loss) from continuing operations	9,571	-13,727	13,916	-9,638
Loss before taxes	-51	0	-51	-7
Benefit of income taxes	-20	0	-20	-3
Loss from discontinued operations	-31	0	-31	-4
Equity in earnings from subsidiaries	0	0	0	0
Net income (loss)	9,540	-13,727	13,885	-9,642
Gibraltar Industries, Inc.	'	'	'	'
Schedule Of Supplemental Financial Information [Line Items]	'	'	'	'
Net Sales	0	0	0	0
Cost of sales	0	0	0	0
Gross profit	0	0	0	0
Selling, general, and administrative expense	29	4	96	188
Intangible asset impairment	'	0	'	0
Income (loss) from operations	-29	-4	-96	-188
Interest expense	3,402	3,486	10,166	17,768
Other income	42	0	36	0
Income (loss) before taxes	-3,473	-3,490	-10,298	-17,956
Provision for income taxes	-1,208	-1,248	-3,572	-6,669
Income (loss) from continuing operations	-2,265	-2,242	-6,726	-11,287
Loss before taxes	0	'	0	0
Benefit of income taxes	0	'	0	0
Loss from discontinued operations	0	'	0	0
Equity in earnings from subsidiaries	12,059	-11,229	21,399	2,635
Net income (loss)	9,794	-13,471	14,673	-8,652
Guarantor Subsidiaries	'	'	'	'
Schedule Of Supplemental Financial Information [Line Items]	'	'	'	'
Net Sales	216,132	200,349	605,798	585,726
Cost of sales	176,955	160,676	501,323	469,628
Gross profit	39,177	39,673	104,475	116,098
Selling, general, and administrative expense	21,592	22,933	72,986	78,373
Intangible asset impairment	'	1,000	'	1,000
Income (loss) from operations	17,585	15,740	31,489	36,725
Interest expense	291	372	927	1,004
Other income	-733	-66	-304	-141
Income (loss) before taxes	18,027	15,434	30,866	35,862
Provision for income taxes	6,791	4,781	11,652	12,392
Income (loss) from continuing operations	11,236	10,653	19,214	23,470
Loss before taxes	-51	'	-51	-7
Benefit of income taxes	-20	'	-20	-3
Loss from discontinued operations	-31	'	-31	-4
Equity in earnings from subsidiaries	854	-21,882	2,216	-20,831
Net income (loss)	12,059	-11,229	21,399	2,635
Non-Guarantor Subsidiaries	'	'	'	'
Schedule Of Supplemental Financial Information [Line Items]	'	'	'	'
Net Sales	22,151	23,060	68,041	69,565
Cost of sales	19,496	20,715	60,163	62,028
Gross profit	2,655	2,345	7,878	7,537
Selling, general, and administrative expense	1,565	1,817	5,085	5,597
Intangible asset impairment	'	22,160	'	22,160
Income (loss) from operations	1,090	-21,632	2,793	-20,220
Interest expense	-36	-30	-105	-94
Other income	27	0	96	0
Income (loss) before taxes	1,099	-21,602	2,802	-20,126
Provision for income taxes	245	280	586	705
Income (loss) from continuing operations	854	-21,882	2,216	-20,831
Loss before taxes	0	'	0	0
Benefit of income taxes	0	'	0	0
Loss from discontinued operations	0	'	0	0
Equity in earnings from subsidiaries	0	0	0	0
Net income (loss)	854	-21,882	2,216	-20,831
Eliminations	'	'	'	'
Schedule Of Supplemental Financial Information [Line Items]	'	'	'	'
Net Sales	-4,182	-5,997	-13,746	-16,559
Cost of sales	-3,928	-5,741	-12,958	-15,569
Gross profit	-254	-256	-788	-990
Selling, general, and administrative expense	0	0	0	0
Intangible asset impairment	'	0	'	0
Income (loss) from operations	-254	-256	-788	-990
Interest expense	0	0	0	0
Other income	0	0	0	0
Income (loss) before taxes	-254	-256	-788	-990
Provision for income taxes	0	0	0	0
Income (loss) from continuing operations	-254	-256	-788	-990
Loss before taxes	0	'	0	0
Benefit of income taxes	0	'	0	0
Loss from discontinued operations	0	'	0	0
Equity in earnings from subsidiaries	-12,913	33,111	-23,615	18,196
Net income (loss)	($13,167)	$32,855	($24,403)	$17,206

Supplemental_Financial_Informa4

Supplemental Financial Information (Schedule Of Consolidating Statements Of Comprehensive Income) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Schedule Of Supplemental Financial Information [Line Items]	'	'	'	'
Net income (loss)	$9,540	($13,727)	$13,885	($9,642)
Other comprehensive income (loss):	'	'	'	'
Foreign currency translation adjustment	-2,734	2,539	-2,096	-1,362
Change in unrealized loss on cash flow hedges, net of tax	714	0	-242	0
Adjustment to retirement benefit liability, net of tax	2	3	6	7
Adjustment to post-retirement health care liability, net of tax	19	18	56	56
Other comprehensive (loss) income	-1,999	2,560	-2,276	-1,299
Total comprehensive income (loss)	7,541	-11,167	11,609	-10,941
Gibraltar Industries, Inc.	'	'	'	'
Schedule Of Supplemental Financial Information [Line Items]	'	'	'	'
Net income (loss)	9,794	-13,471	14,673	-8,652
Other comprehensive income (loss):	'	'	'	'
Foreign currency translation adjustment	0	0	0	0
Change in unrealized loss on cash flow hedges, net of tax	0	'	0	'
Adjustment to retirement benefit liability, net of tax	0	0	0	0
Adjustment to post-retirement health care liability, net of tax	0	0	0	0
Other comprehensive (loss) income	0	0	0	0
Total comprehensive income (loss)	9,794	-13,471	14,673	-8,652
Guarantor Subsidiaries	'	'	'	'
Schedule Of Supplemental Financial Information [Line Items]	'	'	'	'
Net income (loss)	12,059	-11,229	21,399	2,635
Other comprehensive income (loss):	'	'	'	'
Foreign currency translation adjustment	0	0	0	0
Change in unrealized loss on cash flow hedges, net of tax	714	'	-242	'
Adjustment to retirement benefit liability, net of tax	2	3	6	7
Adjustment to post-retirement health care liability, net of tax	19	18	56	56
Other comprehensive (loss) income	735	21	-180	63
Total comprehensive income (loss)	12,794	-11,208	21,219	2,698
Non-Guarantor Subsidiaries	'	'	'	'
Schedule Of Supplemental Financial Information [Line Items]	'	'	'	'
Net income (loss)	854	-21,882	2,216	-20,831
Other comprehensive income (loss):	'	'	'	'
Foreign currency translation adjustment	-2,734	2,539	-2,096	-1,362
Change in unrealized loss on cash flow hedges, net of tax	0	'	0	'
Adjustment to retirement benefit liability, net of tax	0	0	0	0
Adjustment to post-retirement health care liability, net of tax	0	0	0	0
Other comprehensive (loss) income	-2,734	2,539	-2,096	-1,362
Total comprehensive income (loss)	-1,880	-19,343	120	-22,193
Eliminations	'	'	'	'
Schedule Of Supplemental Financial Information [Line Items]	'	'	'	'
Net income (loss)	-13,167	32,855	-24,403	17,206
Other comprehensive income (loss):	'	'	'	'
Foreign currency translation adjustment	0	0	0	0
Change in unrealized loss on cash flow hedges, net of tax	0	'	0	'
Adjustment to retirement benefit liability, net of tax	0	0	0	0
Adjustment to post-retirement health care liability, net of tax	0	0	0	0
Other comprehensive (loss) income	0	0	0	0
Total comprehensive income (loss)	($13,167)	$32,855	($24,403)	$17,206

Supplemental_Financial_Informa5

Supplemental Financial Information (Schedule Of Consolidating Balance Sheets) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2013	Dec. 31, 2012
Schedule Of Supplemental Financial Information [Line Items]	'	'	'	'
Cash and cash equivalents	$101,013,000	$97,039,000	$80,848,000	$48,028,000
Accounts receivable, net of reserve of $4,625 and $4,774 in 2014 and 2013	120,257,000	90,082,000	'	'
Intercompany balances	0	0	'	'
Inventories	126,085,000	121,152,000	'	'
Other current assets	15,992,000	14,127,000	'	'
Total current assets	363,347,000	322,400,000	'	'
Property, plant, and equipment, net	130,819,000	131,752,000	'	'
Goodwill	340,882,000	341,174,000	'	'
Acquired intangibles	87,259,000	91,777,000	'	'
Other assets	7,201,000	7,059,000	'	'
Investment in subsidiaries	0	0	'	'
Total assets	929,508,000	894,162,000	'	'
Accounts payable	92,163,000	69,625,000	'	'
Accrued expenses	52,031,000	49,879,000	'	'
Current maturities of long-term debt	400,000	409,000	'	'
Total current liabilities	144,594,000	119,913,000	'	'
Long-term debt	213,200,000	213,598,000	'	'
Deferred income taxes	55,144,000	55,124,000	'	'
Other non-current liabilities	30,730,000	33,778,000	'	'
Total shareholders’ equity	485,840,000	471,749,000	'	'
Total liabilities and shareholders' equity	929,508,000	894,162,000	'	'
Gibraltar Industries, Inc.	'	'	'	'
Schedule Of Supplemental Financial Information [Line Items]	'	'	'	'
Cash and cash equivalents	0	0	0	0
Accounts receivable, net of reserve of $4,625 and $4,774 in 2014 and 2013	0	0	'	'
Intercompany balances	19,529,000	23,618,000	'	'
Inventories	0	0	'	'
Other current assets	3,582,000	7,578,000	'	'
Total current assets	23,111,000	31,196,000	'	'
Property, plant, and equipment, net	0	0	'	'
Goodwill	0	0	'	'
Acquired intangibles	0	0	'	'
Other assets	3,052,000	3,415,000	'	'
Investment in subsidiaries	670,999,000	652,689,000	'	'
Total assets	697,162,000	687,300,000	'	'
Accounts payable	0	0	'	'
Accrued expenses	1,322,000	5,551,000	'	'
Current maturities of long-term debt	0	0	'	'
Total current liabilities	1,322,000	5,551,000	'	'
Long-term debt	210,000,000	210,000,000	'	'
Deferred income taxes	0	0	'	'
Other non-current liabilities	0	0	'	'
Total shareholders’ equity	485,840,000	471,749,000	'	'
Total liabilities and shareholders' equity	697,162,000	687,300,000	'	'
Guarantor Subsidiaries	'	'	'	'
Schedule Of Supplemental Financial Information [Line Items]	'	'	'	'
Cash and cash equivalents	80,085,000	75,856,000	59,956,000	26,163,000
Accounts receivable, net of reserve of $4,625 and $4,774 in 2014 and 2013	108,810,000	79,356,000	'	'
Intercompany balances	1,802,000	-1,655,000	'	'
Inventories	116,874,000	111,676,000	'	'
Other current assets	11,171,000	5,722,000	'	'
Total current assets	318,742,000	270,955,000	'	'
Property, plant, and equipment, net	118,000,000	119,587,000	'	'
Goodwill	334,123,000	334,123,000	'	'
Acquired intangibles	81,995,000	86,014,000	'	'
Other assets	4,149,000	3,643,000	'	'
Investment in subsidiaries	33,388,000	33,259,000	'	'
Total assets	890,397,000	847,581,000	'	'
Accounts payable	84,772,000	62,464,000	'	'
Accrued expenses	47,958,000	42,418,000	'	'
Current maturities of long-term debt	400,000	409,000	'	'
Total current liabilities	133,130,000	105,291,000	'	'
Long-term debt	3,200,000	3,598,000	'	'
Deferred income taxes	52,862,000	52,746,000	'	'
Other non-current liabilities	30,206,000	33,257,000	'	'
Total shareholders’ equity	670,999,000	652,689,000	'	'
Total liabilities and shareholders' equity	890,397,000	847,581,000	'	'
Non-Guarantor Subsidiaries	'	'	'	'
Schedule Of Supplemental Financial Information [Line Items]	'	'	'	'
Cash and cash equivalents	20,928,000	21,183,000	20,892,000	21,865,000
Accounts receivable, net of reserve of $4,625 and $4,774 in 2014 and 2013	11,447,000	10,726,000	'	'
Intercompany balances	-21,331,000	-21,963,000	'	'
Inventories	9,211,000	9,476,000	'	'
Other current assets	1,239,000	827,000	'	'
Total current assets	21,494,000	20,249,000	'	'
Property, plant, and equipment, net	12,819,000	12,165,000	'	'
Goodwill	6,759,000	7,051,000	'	'
Acquired intangibles	5,264,000	5,763,000	'	'
Other assets	0	1,000	'	'
Investment in subsidiaries	0	0	'	'
Total assets	46,336,000	45,229,000	'	'
Accounts payable	7,391,000	7,161,000	'	'
Accrued expenses	2,751,000	1,910,000	'	'
Current maturities of long-term debt	0	0	'	'
Total current liabilities	10,142,000	9,071,000	'	'
Long-term debt	0	0	'	'
Deferred income taxes	2,282,000	2,378,000	'	'
Other non-current liabilities	524,000	521,000	'	'
Total shareholders’ equity	33,388,000	33,259,000	'	'
Total liabilities and shareholders' equity	46,336,000	45,229,000	'	'
Eliminations	'	'	'	'
Schedule Of Supplemental Financial Information [Line Items]	'	'	'	'
Cash and cash equivalents	0	0	0	0
Accounts receivable, net of reserve of $4,625 and $4,774 in 2014 and 2013	0	0	'	'
Intercompany balances	0	0	'	'
Inventories	0	0	'	'
Other current assets	0	0	'	'
Total current assets	0	0	'	'
Property, plant, and equipment, net	0	0	'	'
Goodwill	0	0	'	'
Acquired intangibles	0	0	'	'
Other assets	0	0	'	'
Investment in subsidiaries	-704,387,000	-685,948,000	'	'
Total assets	-704,387,000	-685,948,000	'	'
Accounts payable	0	0	'	'
Accrued expenses	0	0	'	'
Current maturities of long-term debt	0	0	'	'
Total current liabilities	0	0	'	'
Long-term debt	0	0	'	'
Deferred income taxes	0	0	'	'
Other non-current liabilities	0	0	'	'
Total shareholders’ equity	-704,387,000	-685,948,000	'	'
Total liabilities and shareholders' equity	($704,387,000)	($685,948,000)	'	'

Supplemental_Financial_Informa6

Supplemental Financial Information (Schedule Of Condensed Consolidating Statements Of Cash Flows) (Details) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
Schedule Of Supplemental Financial Information [Line Items]	'	'
Net cash provided by operating activities of continuing operations	$18,185	$37,916
Net cash used in operating activities of discontinued operations	-40	-9
Net cash provided by operating activities	18,145	37,907
Purchases of property, plant, and equipment	-19,180	-8,816
Cash paid for acquisitions, net of cash acquired	0	-5,344
Other investing activities	121	0
Net proceeds from sale of property and equipment	5,958	12,447
Net cash used in investing activities	-13,101	-1,713
Long-term debt payments	-407	-205,084
Proceeds from long-term debt	0	210,000
Payment of note redemption fees	0	-3,702
Purchase of treasury stock at market prices	-505	-642
Payment of deferred financing costs	0	-3,858
Net proceeds from issuance of common stock	508	342
Intercompany financing	0	0
Excess tax benefit from stock compensation	99	62
Net cash used in financing activities	-305	-2,882
Effect of exchange rate changes on cash	-765	-492
Net increase in cash and cash equivalents	3,974	32,820
Cash and cash equivalents at beginning of year	97,039	48,028
Cash and cash equivalents at end of period	101,013	80,848
Gibraltar Industries, Inc.	'	'
Schedule Of Supplemental Financial Information [Line Items]	'	'
Net cash provided by operating activities of continuing operations	-13,297	-9,040
Net cash used in operating activities of discontinued operations	0	0
Net cash provided by operating activities	-13,297	-9,040
Purchases of property, plant, and equipment	0	0
Cash paid for acquisitions, net of cash acquired	'	0
Other investing activities	0	'
Net proceeds from sale of property and equipment	0	0
Net cash used in investing activities	0	0
Long-term debt payments	0	-204,000
Proceeds from long-term debt	'	210,000
Payment of note redemption fees	'	-3,702
Purchase of treasury stock at market prices	-505	-642
Payment of deferred financing costs	'	-3,858
Net proceeds from issuance of common stock	508	342
Intercompany financing	13,195	10,838
Excess tax benefit from stock compensation	99	62
Net cash used in financing activities	13,297	9,040
Effect of exchange rate changes on cash	0	0
Net increase in cash and cash equivalents	0	0
Cash and cash equivalents at beginning of year	0	0
Cash and cash equivalents at end of period	0	0
Guarantor Subsidiaries	'	'
Schedule Of Supplemental Financial Information [Line Items]	'	'
Net cash provided by operating activities of continuing operations	27,470	44,203
Net cash used in operating activities of discontinued operations	-40	-9
Net cash provided by operating activities	27,430	44,194
Purchases of property, plant, and equipment	-16,297	-6,196
Cash paid for acquisitions, net of cash acquired	'	-5,344
Other investing activities	121	'
Net proceeds from sale of property and equipment	5,955	12,434
Net cash used in investing activities	-10,221	894
Long-term debt payments	-407	-1,084
Proceeds from long-term debt	'	0
Payment of note redemption fees	'	0
Purchase of treasury stock at market prices	0	0
Payment of deferred financing costs	'	0
Net proceeds from issuance of common stock	0	0
Intercompany financing	-12,573	-10,211
Excess tax benefit from stock compensation	0	0
Net cash used in financing activities	-12,980	-11,295
Effect of exchange rate changes on cash	0	0
Net increase in cash and cash equivalents	4,229	33,793
Cash and cash equivalents at beginning of year	75,856	26,163
Cash and cash equivalents at end of period	80,085	59,956
Non-Guarantor Subsidiaries	'	'
Schedule Of Supplemental Financial Information [Line Items]	'	'
Net cash provided by operating activities of continuing operations	4,012	2,753
Net cash used in operating activities of discontinued operations	0	0
Net cash provided by operating activities	4,012	2,753
Purchases of property, plant, and equipment	-2,883	-2,620
Cash paid for acquisitions, net of cash acquired	'	0
Other investing activities	0	'
Net proceeds from sale of property and equipment	3	13
Net cash used in investing activities	-2,880	-2,607
Long-term debt payments	0	0
Proceeds from long-term debt	'	0
Payment of note redemption fees	'	0
Purchase of treasury stock at market prices	0	0
Payment of deferred financing costs	'	0
Net proceeds from issuance of common stock	0	0
Intercompany financing	-622	-627
Excess tax benefit from stock compensation	0	0
Net cash used in financing activities	-622	-627
Effect of exchange rate changes on cash	-765	-492
Net increase in cash and cash equivalents	-255	-973
Cash and cash equivalents at beginning of year	21,183	21,865
Cash and cash equivalents at end of period	20,928	20,892
Eliminations	'	'
Schedule Of Supplemental Financial Information [Line Items]	'	'
Net cash provided by operating activities of continuing operations	0	0
Net cash used in operating activities of discontinued operations	0	0
Net cash provided by operating activities	0	0
Purchases of property, plant, and equipment	0	0
Cash paid for acquisitions, net of cash acquired	'	0
Other investing activities	0	'
Net proceeds from sale of property and equipment	0	0
Net cash used in investing activities	0	0
Long-term debt payments	0	0
Proceeds from long-term debt	'	0
Payment of note redemption fees	'	0
Purchase of treasury stock at market prices	0	0
Payment of deferred financing costs	'	0
Net proceeds from issuance of common stock	0	0
Intercompany financing	0	0
Excess tax benefit from stock compensation	0	0
Net cash used in financing activities	0	0
Effect of exchange rate changes on cash	0	0
Net increase in cash and cash equivalents	0	0
Cash and cash equivalents at beginning of year	0	0
Cash and cash equivalents at end of period	$0	$0