Gibraltar Industries (ROCK) 10-Q 2 May 14 2014 Q1 Quarterly report Financial data

Document_And_Entity_Informatio

Document And Entity Information	3 Months Ended
	Mar. 31, 2014	Apr. 29, 2014
Document And Entity Information [Abstract]	'	'
Document Type	'10-Q	'
Amendment Flag	'false	'
Document Period End Date	31-Mar-14	'
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q1	'
Trading Symbol	'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	'	30,846,564

Consolidated_Statements_Of_Ope

Consolidated Statements Of Operations (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Consolidated Statements Of Operations [Abstract]	'	'
Net sales	$191,032	$196,801
Cost of sales	161,168	160,624
Gross profit	29,864	36,177
Selling, general, and administrative expense	29,531	30,981
Income from operations	333	5,196
Interest expense	3,640	11,160
Other expense (income)	30	-66
Loss before taxes	-3,337	-5,898
(Benefit of) provision for income taxes	-1,251	-2,255
Loss from continuing operations	-2,086	-3,643
Discontinued operations:	'	'
Loss before taxes	'	-7
Benefit of income taxes	'	-3
Loss from discontinued operations	'	-4
Net loss	($2,086)	($3,647)
Net earnings per share - Basic:	'	'
Loss from continuing operations	($0.07)	($0.12)
Loss from discontinued operations	'	'
Net loss	($0.07)	($0.12)
Weighted average shares outstanding - Basic	31,034	30,877
Net earnings per share - Diluted:	'	'
Loss from continuing operations	($0.07)	($0.12)
Loss from discontinued operations	'	'
Net loss	($0.07)	($0.12)
Weighted average shares outstanding - Diluted	31,034	30,877

Consolidated_Statements_Of_Com

Consolidated Statements Of Comprehensive Income (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Consolidated Statements Of Comprehensive Income [Abstract]	'	'
Net (loss) income	($2,086)	($3,647)
Other comprehensive loss:	'	'
Foreign currency translation adjustment	-904	-3,097
Adjustment to retirement benefit liability, net of tax	2	2
Adjustment to post-retirement health care liability, net of tax	19	38
Other comprehensive loss	-883	-3,057
Total comprehensive loss	($2,969)	($6,704)

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Assets	'	'
Cash and cash equivalents	$78,186	$97,039
Accounts receivable, net of reserve of $4,770 and $4,774 in 2014 and 2013	106,639	90,082
Inventories	127,200	121,152
Other current assets	16,803	14,127
Total current assets	328,828	322,400
Property, plant, and equipment, net	130,476	131,752
Goodwill	340,942	341,174
Acquired intangibles	90,294	91,777
Other assets	6,495	7,059
Total assets	897,035	894,162
Liabilities and Shareholders' Equity	'	'
Accounts payable	82,813	69,625
Accrued expenses	42,739	49,879
Current maturities of long-term debt	405	409
Total current liabilities	125,957	119,913
Long-term debt	213,600	213,598
Deferred income taxes	55,113	55,124
Other non-current liabilities	32,877	33,778
Shareholders' equity:	'	'
Preferred stock, $0.01 par value; authorized: 10,000 shares; none outstanding	'	'
Common stock, $0.01 par value; authorized 50,000 shares; 31,219 and 31,131 shares issued in 2014 and 2013	312	311
Additional paid-in capital	244,504	243,389
Retained earnings	234,363	236,449
Accumulated other comprehensive loss	-4,468	-3,585
Cost of 417 and 395 common shares held in treasury in 2014 and 2013	-5,223	-4,815
Total shareholders' equity	469,488	471,749
Total liabilities and shareholders' equity	$897,035	$894,162

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, except Share data, unless otherwise specified
Consolidated Balance Sheets [Abstract]	'	'
Accounts receivable, reserve	$4,770	$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	31,219,000	31,131,000
Treasury stock, shares	417,000	395,000

Consolidated_Statements_Of_Cas

Consolidated Statements Of Cash Flows (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Cash Flows from Operating Activities	'	'
Net (loss) income	($2,086)	($3,647)
Loss from discontinued operations	'	-4
Loss from continuing operations	-2,086	-3,643
Adjustments to reconcile net loss to net cash used in operating activities:	'	'
Depreciation and amortization	6,566	6,904
Stock compensation expense	660	973
Other non-cash adjustments	550	425
Non-cash charges to interest expense	261	273
Loss on early note redemption	'	7,166
Increase (decrease) in cash resulting from changes in the following (excluding the effects of acquisitions):	'	'
Accounts receivable	-17,107	-22,813
Inventories	-6,266	-9,802
Other current assets and other assets	-2,248	232
Accounts payable	13,060	13,277
Accrued expenses and other non-current liabilities	-8,016	-5,679
Net cash used in operating activities of continuing operations	-14,626	-12,687
Net cash used in operating activities of discontinued operations	'	-7
Net cash used in operating activities	-14,626	-12,694
Cash Flows from Investing Activities	'	'
Purchases of property, plant, and equipment	-4,056	-1,979
Net proceeds from sale of property and equipment	137	127
Net cash used in investing activities	-3,919	-1,852
Cash Flows from Financing Activities	'	'
Proceeds from long-term debt	'	210,000
Long-term debt payments	-2	-204,678
Payment of deferred financing costs	'	-3,711
Payment of note redemption fees	'	-3,702
Purchase of treasury stock at market prices	-408	-636
Net proceeds from issuance of common stock	365	327
Excess tax benefit from stock compensation	91	83
Net cash provided by (used in) financing activities	46	-2,317
Effect of exchange rate changes on cash	-354	-877
Net decrease in cash and cash equivalents	-18,853	-17,740
Cash and cash equivalents at beginning of year	97,039	48,028
Cash and cash equivalents at end of period	$78,186	$30,288

Consolidated_Statement_Of_Shar

Consolidated Statement Of Shareholders' Equity (USD $)	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]	Treasury Stock [Member]	Total
In Thousands
Balance, value at Dec. 31, 2013	$311	$243,389	$236,449	($3,585)	($4,815)	$471,749
Balance, shares at Dec. 31, 2013	31,131	'	'	'	395	'
Net loss	'	'	-2,086	'	'	-2,086
Foreign currency translation adjustment	'	'	'	-904	'	-904
Adjustment to pension benefit liability, net of taxes of $1	'	'	'	2	'	2
Adjustment to post-retirement healthcare benefit liability, net of taxes of $12	'	'	'	19	'	19
Stock compensation expense	'	660	'	'	'	660
Excess tax benefit from compensation	'	91	'	'	'	91
Stock options exercised, shares	30	'	'	'	'	'
Stock options exercised, value	'	365	'	'	'	365
Net settlement of restricted stock units, shares	58	'	'	'	22	'
Net settlement of restricted stock units, value	1	-1	'	'	-408	-408
Balance, value at Mar. 31, 2014	$312	$244,504	$234,363	($4,468)	($5,223)	$469,488
Balance, shares at Mar. 31, 2014	31,219	'	'	'	417	'

Consolidated_Statement_Of_Shar1

Consolidated Statement Of Shareholders' Equity (Parenthetical) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014
Consolidated Statement Of Shareholders' Equity [Abstract]	'
Adjustment to pension benefit liability, taxes	$1
Adjustment to post-retirement healthcare benefit liability, taxes	$12

Consolidated_Financial_Stateme

Consolidated Financial Statements	3 Months Ended
	Mar. 31, 2014
Consolidated Financial Statements [Abstract]	'
Consolidated Financial Statements	'
	1. 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 financial position at March 31, 2014 and December 31, 2013, the results of operations, comprehensive income, and cash flows for the three months ended March 31, 2014 and 2013, and the statement of shareholders' equity for the three months ended March 31, 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 month period ended March 31, 2014 are not necessarily indicative of the results to be expected for the full year. The Company is subject to seasonal fluctuations in our businesses primarily due to reduced activity in the first and fourth quarters for the industries which we serve due to inclement weather.

Inventories

Inventories	3 Months Ended
	Mar. 31, 2014
Inventories [Abstract]	'
Inventories	'
	2. INVENTORIES
	Inventories consist of the following (in thousands):
			March 31,		December 31,
			2014		2013
	Raw material	$	54,830	$	52,751
	Work-in-process		11,310		11,100
	Finished goods		61,060		57,301
	Total inventories	$	127,200	$	121,152

Acquisitions

Acquisitions	3 Months Ended
	Mar. 31, 2014
Acquisitions [Abstract]	'
Acquisitions	'
	3. 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 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 $1,891,000 as of March 31, 2014, which resulted in $27,000 of expense recorded in SG&A during the three months ended March 31, 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):
				Estimated
			Fair Value	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 of $2,000 and $117,000 for the three months ended March 31, 2014 and 2013, respectively. All acquisition-related costs were recognized as a component of selling, general, and administrative expenses in the consolidated statement of operations. The Company also recognized additional cost of sales of $206,000 and $203,000 for the three months ended March 31, 2014 and 2013, respectively, related to the sale of inventory at fair value as a result of allocating the purchase price of the recent acquisitions.

Goodwill_And_Related_Intangibl

Goodwill And Related Intangible Assets	3 Months Ended
	Mar. 31, 2014
Goodwill And Related Intangible Assets [Abstract]	'
Goodwill And Related Intangible Assets	'
	4. GOODWILL AND RELATED INTANGIBLE ASSETS
	Goodwill
	The changes in the carrying amount of goodwill for the three months ended March 31, 2014 are as follows (in thousands):
					Industrial and
			Residential		Infrastructure
			Products		Products			Total
	Balance as of December 31, 2013	$	195,520	$	145,654		$	341,174
	Foreign currency translation		–		(232	)		(232	)
	Balance as of March 31, 2014	$	195,520	$	145,422		$	340,942
	The goodwill balances as of March 31, 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):
			31-Mar-14				31-Dec-13
			Gross				Gross
			Carrying	Accumulated			Carrying	Accumulated
			Amount	Amortization			Amount	Amortization		Estimated Life
	Indefinite-lived intangible assets:
	Trademarks	$	45,744	$	–	$	45,724	$	–	Indefinite
	Finite-lived intangible assets:
	Trademarks		3,950		1,525		3,989		1,420	2 to 15 Years
	Unpatented technology		24,690		7,428		24,690		6,980	5 to 20 Years
	Customer relationships		54,129		29,750		54,171		28,926	5 to 16 Years
	Non-compete agreements		1,937		1,453		1,937		1,408	4 to 10 Years
	Backlog		1,330		1,330		1,330		1,330	1 to 2 Years
			86,036		41,486		86,117		40,064
	Total acquired intangible assets	$	131,780	$	41,486	$	131,841	$	40,064
	The Company incurred $1,439,000 and $1,719,000 of acquired intangible asset amortization expense for the three months ended March 31, 2014 and 2013, respectively.
	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	$	4,276
	2015	$	5,578
	2016	$	5,243
	2017	$	4,882
	2018	$	4,320
	2019	$	2,172

Related_Party_Transactions

Related Party Transactions	3 Months Ended
	Mar. 31, 2014
Related Party Transactions [Abstract]	'
Related Party Transactions	'
	5. 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 March 31, 2014 and December 31, 2013, the Company had $159,000 and $296,000, respectively, recorded in accounts payable for amounts due to this law firm. For the three months ended March 31, 2014 and 2013, the Company incurred the following costs for legal services from this firm, including services provided in connection with the note refinancing and classified as debt issuance costs (in thousands):
			2014		2013
	Selling, general, and administrative expense	$	220	$	304
	Capitalized as deferred financing costs		–		208
	Total related-party legal costs	$	220	$	512
	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	3 Months Ended
	Mar. 31, 2014
Long-Term Debt [Abstract]	'
Long-Term Debt	'
	6. LONG-TERM DEBT
	Long-term debt consists of the following (in thousands):
			March 31,		December 31,
			2014		2013
	Senior Subordinated 6.25% Notes	$	210,000	$	210,000
	Other debt		4,005		4,007
	Total debt		214,005		214,007
	Less current maturities		405		409
	Total long-term debt	$	213,600	$	213,598
	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 Senior Credit Agreement provides for a revolving credit facility and letters of credit in an aggregate amount that does not 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. The Company can request additional financing from the banks to increase the revolving credit facility to $250 million under the terms of the Senior Credit Agreement.
	The terms of the Senior Credit Agreement provide that the revolving credit facility will terminate on 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 of $12,868,000 have been issued under the Senior Credit Agreement to third parties on behalf of the Company as of March 31, 2014. These letters of credit reduce the amount otherwise available under the revolving credit facility. As of March 31, 2014, based upon the Company's current borrowing base calculation, the Company had $116,712,000 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 March 31, 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.
	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 and included in other assets.

Accumulated_Other_Comprehensiv

Accumulated Other Comprehensive Income	3 Months Ended
	Mar. 31, 2014
Accumulated Other Comprehensive Income [Abstract]	'
Accumulated Other Comprehensive Income	'
	7. ACCUMULATED OTHER COMPREHENSIVE INCOME
	The cumulative balance of each component of accumulated other comprehensive loss, net of tax, is as follows (in thousands):
			Foreign Currency			Minimum Pension		Unamortized Post-			Accumulated Other
			Translation			Liability		Retirement Health			Comprehensive
			Adjustment			Adjustment		Care Costs			Loss
	Balance as of December 31, 2013	$	(2,201	)	$	45	$	(1,429	)	$	(3,585	)
	Current period change		(904	)		2		19			(883	)
	Balance as of March 31, 2014	$	(3,105	)	$	47	$	(1,410	)	$	(4,468	)

EquityBased_Compensation

Equity-Based Compensation	3 Months Ended
	Mar. 31, 2014
Equity-Based Compensation [Abstract]	'
Equity-Based Compensation	'
	8. 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
	The following table provides the number of restricted stock units (that will convert to shares upon vesting), that were issued during the three months ended March 31 along with the weighted average grant date fair value of each award:
		2014			2013
			Weighted			Weighted
			Average			Average
		Number of	Grant Date		Number of	Grant Date
	Awards	Awards	Fair Value		Awards	Fair Value
	Restricted stock units	88,755	$	18.42	72,165	$	16.5
	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 March 31, 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 58.3% of target, aggregating 163,200 performance stock units compared to the target of 280,000 awards.
	In January 2013, the Company awarded 304,000 performance stock units with a grant date fair value of $4,123,000. As of March 31, 2014, 246,000 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 50% of target, aggregating 123,000 performance stock units compared to the target of 246,000 awards.
	In January 2014, the Company awarded 212,000 performance stock units with a grant date fair value of $3,914,000, all of which remain outstanding as of March 31, 2014. 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 awards 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 months ended March 31 (in thousands):
			2014		2013
	Performance stock unit compensation expense	$	1,137	$	1,501
	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 three months ended March 31, 2014 and 2013, 108,043 and 183,178 restricted stock units, respectively, including the company-match, were credited to participant accounts. At March 31, 2014 and December 31, 2013, the value of the restricted stock units in the MSPP was $16.20 and $15.97 per unit, respectively. At March 31, 2014 and December 31, 2013, 722,931 and 614,888 restricted stock units, including the company-match, were credited to participant accounts including 62,133 and 47,268, respectively, of unvested restricted stock units. The Company made disbursements of $395,000 and $531,000 out of the MSPP during the three months ended March 31, 2014 and 2013, respectively.

Fair_Value_Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2014
Fair Value Measurements [Abstract]	'
Fair Value Measurements	'
	9. FAIR VALUE MEASUREMENTS
	FASB Accounting Standards Codification (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.
	FASB ASC Topic 820 establishes a valuation hierarchy for disclosure of the inputs used to measure fair value. This hierarchy prioritizes the inputs into three broad levels as follows. Level 1 inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities. Level 2 inputs are quoted prices for similar assets and liabilities in active markets or inputs that are observable for the asset or liability, either directly or indirectly through market corroboration, for substantially the full term of the financial instrument. Level 3 inputs are unobservable inputs based on the Company's assumptions used to measure assets and liabilities at fair value. 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 described in Note 3 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 which 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 3 which 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 of March 31, 2014 and December 31, 2013, the fair value of the contingent consideration liability was $1,891,000 and $1,864,000, respectively.
	The Company's financial instruments primarily consist of cash and cash equivalents, accounts receivable, 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 March 31, 2014, the fair value of outstanding debt was $227,524,000 compared to its carrying value of $214,005,000. The fair value of the Company's Senior Subordinated 6.25% Notes was estimated based on quoted market prices, a Level 1 input.

Discontinued_Operations

Discontinued Operations	3 Months Ended
	Mar. 31, 2014
Discontinued Operations [Abstract]	'
Discontinued Operations	'
	10. 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 March 31, 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	3 Months Ended
	Mar. 31, 2014
Exit Activity Costs And Asset Impairments [Abstract]	'
Exit Activity Costs And Asset Impairments	'
	11. 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 2013, the Company consolidated two facilities in this effort, and also identified two other facilities to close or consolidate. During this process in 2014, the Company incurred $83,000 of asset impairment charges along with exit activity costs, including contract termination costs, severance costs, and other moving and closing costs, and expects to incur approximately $700,000 of additional costs related to these efforts. If future opportunities for cost savings are identified, other facility consolidations and closings will be considered.
	The following table provides a summary of exit activity costs and asset impairments incurred by segment during the three months ended March 31 (in thousands):
			2014		2013
	Residential Products	$	327	$	29
	Industrial and Infrastructure Products		102		–
	Corporate		–		–
	Total exit activity costs and asset impairments	$	429	$	29
	The following table provides a summary of where the exit activity costs and asset impairments were recorded in the statement of operations for the three months ended March 31 (in thousands):
			2014		2013
	Cost of sales	$	325	$	29
	Selling, general, and administrative expense		104		–
	Total exit activity costs and asset impairments	$	429	$	29
	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 as of January 1	$	1,092		$	1,323
	Exit activity costs recognized		346			29
	Cash payments		(536	)		(315	)
	Balance as of March 31	$	902		$	1,037

Income_Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2014
Income Taxes [Abstract]	'
Income Taxes	'
	12. INCOME TAXES
	The following table summarizes the provision for income taxes for continuing operations for the three months ended March 31 and the applicable effective tax rates (in thousands):
			2014			2013
	Benefit of income taxes	$	1,251		$	2,255
	Effective tax rate		37.5	%		38.2	%
	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 three months ended March 31, 2014.
	The effective tax rates for the first quarter of 2014 and 2013 exceeded the U.S. federal statutory rate of 35% due to state taxes partially offset by deductible permanent differences.

Net_Earnings_Per_Share

Net Earnings Per Share	3 Months Ended
	Mar. 31, 2014
Net Earnings Per Share [Abstract]	'
Net Earnings Per Share	'
	13. 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 8 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 loss per share for the three months ended March 31 (in thousands):
			2014			2013
	Numerator:
	Loss from continuing operations	$	(2,086	)	$	(3,643	)
	Loss from discontinued operations		–			(4	)
	Net loss available to common shareholders	$	(2,086	)	$	(3,647	)
	Denominator for basic earnings per share:
	Weighted average shares outstanding		31,034			30,877
	Denominator for diluted earnings per share:
	Weighted average shares outstanding		31,034			30,877
	Common stock options and restricted stock		-			-
	Weighted average shares and conversions		31,034			30,877
	For the three months ended March 31, 2014 and 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 209,000 and 182,000 shares for the three months ended March 31, 2014 and 2013, respectively.

Segment_Information

Segment Information	3 Months Ended
	Mar. 31, 2014
Segment Information [Abstract]	'
Segment Information	'
	14. SEGMENT INFORMATION
	The Company is organized into two reportable segments on the basis of the production process 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 for the reconciliation of sales to earnings before income taxes by segment for the three months ended March 31 (in thousands):
			2014			2013
	Net sales:
	Residential Products	$	86,983		$	89,664
	Industrial and Infrastructure Products		104,346			107,467
	Less: Intersegment sales		(297	)		(330	)
			104,049			107,137
	Total consolidated net sales	$	191,032		$	196,801
	Income (loss) from operations:
	Residential Products	$	2,093		$	6,638
	Industrial and Infrastructure Products		3,108			6,327
	Unallocated Corporate Expenses		(4,868	)		(7,769	)
	Total operating profit	$	333		$	5,196

Supplemental_Financial_Informa

Supplemental Financial Information	3 Months Ended
	Mar. 31, 2014
Supplemental Financial Information [Abstract]	'
Supplemental Financial Information	'
	15. 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 MARCH 31, 2014 (in thousands)
			Gibraltar			Guarantor			Non-Guarantor
			Industries, Inc.			Subsidiaries			Subsidiaries			Eliminations			Total
	Net sales	$	–		$	172,781		$	22,919		$	(4,668	)	$	191,032
	Cost of sales		–			145,161			20,494			(4,487	)		161,168
	Gross profit		–			27,620			2,425			(181	)		29,864
	Selling, general, and administrative expense		36			27,763			1,732			–			29,531
	(Loss) income from operations		(36	)		(143	)		693			(181	)		333
	Interest expense (income)		3,361			314			(35	)		–			3,640
	Other expense		–			30			–			–			30
	(Loss) income before taxes		(3,397	)		(487	)		728			(181	)		(3,337	)
	(Benefit of) provision for income taxes		(1,177	)		(234	)		160			–			(1,251	)
	(Loss) income from continuing operations		(2,220	)		(253	)		568			(181	)		(2,086	)
	Discontinued operations:
	Loss from discontinued operations before taxes		–			–			–			–			–
	Benefit of income taxes		–			–			–			–			–
	Loss from discontinued operations		–			–			–			–			–
	Equity in earnings from subsidiaries		315			568			–			(883	)		–
	Net (loss) income	$	(1,905	)	$	315		$	568		$	(1,064	)	$	(2,086	)
	GIBRALTAR INDUSTRIES, INC. CONSOLIDATING STATEMENTS OF OPERATIONS
	THREE MONTHS ENDED MARCH 31, 2013 (in thousands)
			Gibraltar			Guarantor			Non-Guarantor
			Industries, Inc.			Subsidiaries			Subsidiaries			Eliminations			Total
	Net sales		$ –		$	178,049		$	23,217		$	(4,465	)	$	196,801
	Cost of sales		–			144,395			20,484			(4,255	)		160,624
	Gross profit		–			33,654			2,733			(210	)		36,177
	Selling, general, and administrative expense		158			28,881			1,942			–			30,981
	(Loss) income from operations		(158	)		4,773			791			(210	)		5,196
	Interest expense (income)		10,883			308			(31	)		–			11,160
	Other income		–			(66	)		–			–			(66	)
	(Loss) income before taxes		(11,041	)		4,531			822			(210	)		(5,898	)
	(Benefit of) provision for income taxes		(4,197	)		1,758			184			–			(2,255	)
	(Loss) income from continuing operations		(6,844	)		2,773			638			(210	)		(3,643	)
	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		3,407			638			–			(4,045	)		–
	Net (loss) income	$	(3,437	)	$	3,407		$	638		$	(4,255	)	$	(3,647	)
	GIBRALTAR INDUSTRIES, INC.
	CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME THREE MONTHS ENDED MARCH 31, 2014 (in thousands)
			Gibraltar			Guarantor		Non-Guarantor
			Industries, Inc.			Subsidiaries		Subsidiaries			Eliminations			Total
	Net (loss) income	$	(1,905	)	$	315	$	568		$	(1,064	)	$	(2,086	)
	Other comprehensive (loss) income:
	Foreign currency translation adjustment		–			–		(904	)		–			(904	)
	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)		–			21		(904	)		–			(883	)
	Total comprehensive (loss) income	$	(1,905	)	$	336	$	(336	)	$	(1,064	)	$	(2,969	)
	GIBRALTAR INDUSTRIES, INC.
	CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME THREE MONTHS ENDED MARCH 31, 2013 (in thousands)
			Gibraltar			Guarantor		Non-Guarantor
			Industries, Inc.			Subsidiaries		Subsidiaries			Eliminations			Total
	Net (loss) income	$	(3,437	)	$	3,407	$	638		$	(4,255	)	$	(3,647	)
	Other comprehensive (loss) income:
	Foreign currency translation adjustment		–			–		(3,097	)		–			(3,097	)
	Adjustment to retirement benefit liability, net of tax		–			2		–			–			2
	Adjustment to post-retirement health care liability, net of tax		–			38		–			–			38
Other comprehensive income (loss)		–			40		(3,097	)		–			(3,057	)
Total comprehensive (loss) income	$	(3,437	)	$	3,447	$	(2,459	)	$	(4,255	)	$	(6,704	)
GIBRALTAR INDUSTRIES, INC. CONSOLIDATING BALANCE SHEETS
MARCH 31, 2014 (in thousands)
		Gibraltar		Guarantor			Non-Guarantor
		Industries, Inc.		Subsidiaries			Subsidiaries			Eliminations			Total
Assets
Current assets:
Cash and cash equivalents	$	–	$	57,601		$	20,585		$	–		$	78,186
Accounts receivable, net		–		94,937			11,702			–			106,639
Intercompany balances		25,306		(2,582	)		(22,724	)		–			–
Inventories		–		117,693			9,507			–			127,200
Other current assets		1,245		14,497			1,061			–			16,803
Total current assets		26,551		282,146			20,131			–			328,828
Property, plant, and equipment, net		–		117,395			13,081			–			130,476
Goodwill		–		334,123			6,819			–			340,942
Acquired intangibles		–		84,667			5,627			–			90,294
Other assets		3,294		3,201			–			–			6,495
Investment in subsidiaries		651,528		32,499			–			(684,027	)		–
	$	681,373	$	854,031		$	45,658		$	(684,027	)	$	897,035
Liabilities and Shareholders' Equity
Current liabilities:
Accounts payable	$	–	$	75,171		$	7,642		$	–		$	82,813
Accrued expenses		1,885		38,225			2,629			–			42,739
Current maturities of long-term debt		–		405			–			–			405
Total current liabilities		1,885		113,801			10,271			–			125,957
Long-term debt		210,000		3,600			–			–			213,600
Deferred income taxes		–		52,759			2,354			–			55,113
Other non-current liabilities		–		32,343			534			–			32,877
Shareholders' equity		469,488		651,528			32,499			(684,027	)		469,488
	$	681,373	$	854,031		$	45,658		$	(684,027	)	$	897,035
GIBRALTAR INDUSTRIES, INC. CONSOLIDATING BALANCE SHEETS
DECEMBER 31, 2013 (in thousands)
		Gibraltar		Guarantor			Non-Guarantor
		Industries, Inc.		Subsidiaries			Subsidiaries			Eliminations			Total
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 THREE MONTHS ENDED MARCH 31, 2014 (in thousands)
		Gibraltar						Non -
		Industries,			Guarantor			Guarantor
		Inc.			Subsidiaries			Subsidiaries		Eliminations		Total
Cash Flows from Operating Activities
Net cash (used in) provided by operating activities of continuing operations	$	(6,639	)	$	(8,985	)	$	998		$ –	$	(14,626	)
Net cash used in operating activities of discontinued operations		–			–			–		–		–
Net cash (used in) provided by operating activities		(6,639	)		(8,985	)		998		–		(14,626	)
Cash Flows from Investing Activities
Purchases of property, plant, and equipment		–			(2,474	)		(1,582	)	–		(4,056	)
Net proceeds from sale of property and equipment		–			135			2		–		137
Net cash used in investing activities		–			(2,339	)		(1,580	)	–		(3,919	)
Cash Flows from Financing Activities
Long-term debt payments		–			(2	)		–		–		(2	)
Purchase of treasury stock at market prices		(408	)		–			–		–		(408	)
Net proceeds from issuance of common stock		365			–			–		–		365
Intercompany financing		6,591			(6,929	)		338		–		–
Excess tax benefit from stock compensation		91			–			–		–		91
Net cash provided by (used in) financing activities		6,639			(6,931	)		338		–		46
Effect of exchange rate changes on cash		–			–			(354	)	–		(354	)
Net decrease in cash and cash equivalents		–			(18,255	)		(598	)	–		(18,853	)
Cash and cash equivalents at beginning of year		–			75,856			21,183		–		97,039
Cash and cash equivalents at end of period		$ –		$	57,601		$	20,585		$ –	$	78,186
GIBRALTAR INDUSTRIES, INC.
CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS THREE MONTHS ENDED MARCH 31, 2013 (in thousands)
								Non-
		Gibraltar			Guarantor			Guarantor
		Industries, Inc.			Subsidiaries			Subsidiaries		Eliminations		Total
Cash Flows from Operating Activities
Net cash (used in) provided by operating activities of continuing operations	$	(2,878	)	$	(10,125	)	$	316		$ –	$	(12,687	)
Net cash used in operating activities of discontinued operations		–			(7	)		–		–		(7	)
Net cash (used in) provided by operating activities		(2,878	)		(10,132	)		316		–		(12,694	)
Cash Flows from Investing Activities
Purchases of property, plant, and equipment		–			(1,641	)		(338	)	–		(1,979	)
Net proceeds from sale of property and equipment		–			127			–		–		127
Net cash used in investing activities		–			(1,514	)		(338	)	–		(1,852	)
Cash Flows from Financing Activities
Long-term debt payments		(204,000	)		(678	)		–		–		(204,678	)
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		(636	)		–			–		–		(636	)
Payment of deferred financing costs		(3,705	)		(6	)		–		–		(3,711	)
Net proceeds from issuance of common stock		327			–			–		–		327
Intercompany financing		4,511			(4,458	)		(53	)	–		–
Excess tax benefit from stock compensation		83			–			–		–		83
Net cash provided by (used in) financing activities		2,878			(5,142	)		(53	)	–		(2,317	)
Effect of exchange rate changes on cash		–			–			(877	)	–		(877	)
Net decrease in cash and cash equivalents		–			(16,788	)		(952	)	–		(17,740	)
Cash and cash equivalents at beginning of year		–			26,163			21,865		–		48,028
Cash and cash equivalents at end of period	$	–		$	9,375		$	20,913		$ –	$	30,288

Inventories_Tables

Inventories (Tables)	3 Months Ended
	Mar. 31, 2014
Inventories [Abstract]	'
Schedule Of Inventories	'
			March 31,		December 31,
			2014		2013
	Raw material	$	54,830	$	52,751
	Work-in-process		11,310		11,100
	Finished goods		61,060		57,301
	Total inventories	$	127,200	$	121,152

Acquisitions_Tables

Acquisitions (Tables)	3 Months Ended
	Mar. 31, 2014
Acquisitions [Abstract]	'
Allocation Of Purchase Consideration To The Assets Acquired And Liabilities Assumed	'
	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	'
				Estimated
			Fair Value	Useful Life
	Trademarks	$	640	Indefinite
	Technology		260	15 Years
	Customer relationships		1,130	15 Years
	Non-compete agreements		140	5 Years
	Total	$	2,170

Goodwill_And_Related_Intangibl1

Goodwill And Related Intangible Assets (Tables)	3 Months Ended
	Mar. 31, 2014
Goodwill And Related Intangible Assets [Abstract]	'
Schedule Of Changes In Carrying Amount Of Goodwill	'
					Industrial and
			Residential		Infrastructure
			Products		Products			Total
	Balance as of December 31, 2013	$	195,520	$	145,654		$	341,174
	Foreign currency translation		–		(232	)		(232	)
	Balance as of March 31, 2014	$	195,520	$	145,422		$	340,942
Schedule Of Acquired Intangible Assets	'
			31-Mar-14				31-Dec-13
			Gross				Gross
			Carrying	Accumulated			Carrying	Accumulated
			Amount	Amortization			Amount	Amortization		Estimated Life
	Indefinite-lived intangible assets:
	Trademarks	$	45,744	$	–	$	45,724	$	–	Indefinite
	Finite-lived intangible assets:
	Trademarks		3,950		1,525		3,989		1,420	2 to 15 Years
	Unpatented technology		24,690		7,428		24,690		6,980	5 to 20 Years
	Customer relationships		54,129		29,750		54,171		28,926	5 to 16 Years
	Non-compete agreements		1,937		1,453		1,937		1,408	4 to 10 Years
	Backlog		1,330		1,330		1,330		1,330	1 to 2 Years
			86,036		41,486		86,117		40,064
	Total acquired intangible assets	$	131,780	$	41,486	$	131,841	$	40,064
Schedule Of Amortization Expense	'
	2014	$	4,276
	2015	$	5,578
	2016	$	5,243
	2017	$	4,882
	2018	$	4,320
	2019	$	2,172

Related_Party_Transactions_Tab

Related Party Transactions (Tables)	3 Months Ended
	Mar. 31, 2014
Related Party Transactions [Abstract]	'
Schedule Of Related Party Legal Services	'
			2014		2013
	Selling, general, and administrative expense	$	220	$	304
	Capitalized as deferred financing costs		–		208
	Total related-party legal costs	$	220	$	512

LongTerm_Debt_Tables

Long-Term Debt (Tables)	3 Months Ended
	Mar. 31, 2014
Long-Term Debt [Abstract]	'
Schedule Of Long-Term Debt	'
			March 31,		December 31,
			2014		2013
	Senior Subordinated 6.25% Notes	$	210,000	$	210,000
	Other debt		4,005		4,007
	Total debt		214,005		214,007
	Less current maturities		405		409
	Total long-term debt	$	213,600	$	213,598

Accumulated_Other_Comprehensiv1

Accumulated Other Comprehensive Income (Tables)	3 Months Ended
	Mar. 31, 2014
Accumulated Other Comprehensive Income [Abstract]	'
Schedule Of Components Of Accumulated Other Comprehensive Loss	'
			Foreign Currency			Minimum Pension		Unamortized Post-			Accumulated Other
			Translation			Liability		Retirement Health			Comprehensive
			Adjustment			Adjustment		Care Costs			Loss
	Balance as of December 31, 2013	$	(2,201	)	$	45	$	(1,429	)	$	(3,585	)
	Current period change		(904	)		2		19			(883	)
	Balance as of March 31, 2014	$	(3,105	)	$	47	$	(1,410	)	$	(4,468	)

EquityBased_Compensation_Table

Equity-Based Compensation (Tables)	3 Months Ended
	Mar. 31, 2014
Equity-Based Compensation [Abstract]	'
Schedule Of Number Of Awards And Weighted Average Grant Date Fair Value	'
		2014			2013
			Weighted			Weighted
			Average			Average
		Number of	Grant Date		Number of	Grant Date
	Awards	Awards	Fair Value		Awards	Fair Value
	Restricted stock units	88,755	$	18.42	72,165	$	16.5
Schedule Of Compensation Expense Recognized From Change In Fair Value And Vesting Of Performance Stock Units	'
			2014		2013
	Performance stock unit compensation expense	$	1,137	$	1,501

Exit_Activity_Costs_And_Asset_1

Exit Activity Costs And Asset Impairments (Tables)	3 Months Ended
	Mar. 31, 2014
Exit Activity Costs And Asset Impairments [Abstract]	'
Summary Of Exit Activity Costs And Asset Impairments By Segment	'
			2014		2013
	Residential Products	$	327	$	29
	Industrial and Infrastructure Products		102		–
	Corporate		–		–
	Total exit activity costs and asset impairments	$	429	$	29
Summary Of Exit Activity Costs And Asset Impairments	'
			2014		2013
	Cost of sales	$	325	$	29
	Selling, general, and administrative expense		104		–
	Total exit activity costs and asset impairments	$	429	$	29
Reconciliation Of Liability For Exit Activity Costs Relating To Facility Consolidation Efforts	'
			2014			2013
	Balance as of January 1	$	1,092		$	1,323
	Exit activity costs recognized		346			29
	Cash payments		(536	)		(315	)
	Balance as of March 31	$	902		$	1,037

Income_Taxes_Tables

Income Taxes (Tables)	3 Months Ended
	Mar. 31, 2014
Income Taxes [Abstract]	'
Summary Of Provision For Income Taxes For Continuing Operations	'
			2014			2013
	Benefit of income taxes	$	1,251		$	2,255
	Effective tax rate		37.5	%		38.2	%

Net_Earnings_Per_Share_Tables

Net Earnings Per Share (Tables)	3 Months Ended
	Mar. 31, 2014
Net Earnings Per Share [Abstract]	'
Schedule Of Computation Of Basic And Diluted Loss Per Share	'
			2014			2013
	Numerator:
	Loss from continuing operations	$	(2,086	)	$	(3,643	)
	Loss from discontinued operations		–			(4	)
	Net loss available to common shareholders	$	(2,086	)	$	(3,647	)
	Denominator for basic earnings per share:
	Weighted average shares outstanding		31,034			30,877
	Denominator for diluted earnings per share:
	Weighted average shares outstanding		31,034			30,877
	Common stock options and restricted stock		-			-
	Weighted average shares and conversions		31,034			30,877

Segment_Information_Tables

Segment Information (Tables)	3 Months Ended
	Mar. 31, 2014
Segment Information [Abstract]	'
Reconciliation Of Sales To Earnings Before Income Taxes by Segment	'
			2014			2013
	Net sales:
	Residential Products	$	86,983		$	89,664
	Industrial and Infrastructure Products		104,346			107,467
	Less: Intersegment sales		(297	)		(330	)
			104,049			107,137
	Total consolidated net sales	$	191,032		$	196,801
	Income (loss) from operations:
	Residential Products	$	2,093		$	6,638
	Industrial and Infrastructure Products		3,108			6,327
	Unallocated Corporate Expenses		(4,868	)		(7,769	)
	Total operating profit	$	333		$	5,196

Supplemental_Financial_Informa1

Supplemental Financial Information (Tables)	3 Months Ended
	Mar. 31, 2014
Supplemental Financial Information [Abstract]	'
Schedule Of Consolidating Statements Of Operations	'
	GIBRALTAR INDUSTRIES, INC. CONSOLIDATING STATEMENTS OF OPERATIONS
	THREE MONTHS ENDED MARCH 31, 2014 (in thousands)
			Gibraltar			Guarantor			Non-Guarantor
			Industries, Inc.			Subsidiaries			Subsidiaries			Eliminations			Total
	Net sales	$	–		$	172,781		$	22,919		$	(4,668	)	$	191,032
	Cost of sales		–			145,161			20,494			(4,487	)		161,168
	Gross profit		–			27,620			2,425			(181	)		29,864
	Selling, general, and administrative expense		36			27,763			1,732			–			29,531
	(Loss) income from operations		(36	)		(143	)		693			(181	)		333
	Interest expense (income)		3,361			314			(35	)		–			3,640
	Other expense		–			30			–			–			30
	(Loss) income before taxes		(3,397	)		(487	)		728			(181	)		(3,337	)
	(Benefit of) provision for income taxes		(1,177	)		(234	)		160			–			(1,251	)
	(Loss) income from continuing operations		(2,220	)		(253	)		568			(181	)		(2,086	)
	Discontinued operations:
	Loss from discontinued operations before taxes		–			–			–			–			–
	Benefit of income taxes		–			–			–			–			–
	Loss from discontinued operations		–			–			–			–			–
	Equity in earnings from subsidiaries		315			568			–			(883	)		–
	Net (loss) income	$	(1,905	)	$	315		$	568		$	(1,064	)	$	(2,086	)
	GIBRALTAR INDUSTRIES, INC. CONSOLIDATING STATEMENTS OF OPERATIONS
	THREE MONTHS ENDED MARCH 31, 2013 (in thousands)
			Gibraltar			Guarantor			Non-Guarantor
			Industries, Inc.			Subsidiaries			Subsidiaries			Eliminations			Total
	Net sales		$ –		$	178,049		$	23,217		$	(4,465	)	$	196,801
	Cost of sales		–			144,395			20,484			(4,255	)		160,624
	Gross profit		–			33,654			2,733			(210	)		36,177
	Selling, general, and administrative expense		158			28,881			1,942			–			30,981
	(Loss) income from operations		(158	)		4,773			791			(210	)		5,196
	Interest expense (income)		10,883			308			(31	)		–			11,160
	Other income		–			(66	)		–			–			(66	)
	(Loss) income before taxes		(11,041	)		4,531			822			(210	)		(5,898	)
	(Benefit of) provision for income taxes		(4,197	)		1,758			184			–			(2,255	)
	(Loss) income from continuing operations		(6,844	)		2,773			638			(210	)		(3,643	)
	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		3,407			638			–			(4,045	)		–
	Net (loss) income	$	(3,437	)	$	3,407		$	638		$	(4,255	)	$	(3,647	)
Schedule Of Consolidating Statements Of Comprehensive Income	'
	GIBRALTAR INDUSTRIES, INC.
	CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME THREE MONTHS ENDED MARCH 31, 2014 (in thousands)
			Gibraltar			Guarantor		Non-Guarantor
			Industries, Inc.			Subsidiaries		Subsidiaries			Eliminations			Total
	Net (loss) income	$	(1,905	)	$	315	$	568		$	(1,064	)	$	(2,086	)
	Other comprehensive (loss) income:
	Foreign currency translation adjustment		–			–		(904	)		–			(904	)
	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)		–			21		(904	)		–			(883	)
	Total comprehensive (loss) income	$	(1,905	)	$	336	$	(336	)	$	(1,064	)	$	(2,969	)
	GIBRALTAR INDUSTRIES, INC.
	CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME THREE MONTHS ENDED MARCH 31, 2013 (in thousands)
			Gibraltar			Guarantor		Non-Guarantor
			Industries, Inc.			Subsidiaries		Subsidiaries			Eliminations			Total
	Net (loss) income	$	(3,437	)	$	3,407	$	638		$	(4,255	)	$	(3,647	)
	Other comprehensive (loss) income:
	Foreign currency translation adjustment		–			–		(3,097	)		–			(3,097	)
	Adjustment to retirement benefit liability, net of tax		–			2		–			–			2
	Adjustment to post-retirement health care liability, net of tax		–			38		–			–			38
	Other comprehensive income (loss)		–			40		(3,097	)		–			(3,057	)
	Total comprehensive (loss) income	$	(3,437	)	$	3,447	$	(2,459	)	$	(4,255	)	$	(6,704	)
Schedule Of Consolidating Balance Sheets	'
	GIBRALTAR INDUSTRIES, INC. CONSOLIDATING BALANCE SHEETS
	MARCH 31, 2014 (in thousands)
			Gibraltar		Guarantor			Non-Guarantor
			Industries, Inc.		Subsidiaries			Subsidiaries			Eliminations			Total
	Assets
	Current assets:
	Cash and cash equivalents	$	–	$	57,601		$	20,585		$	–		$	78,186
	Accounts receivable, net		–		94,937			11,702			–			106,639
	Intercompany balances		25,306		(2,582	)		(22,724	)		–			–
	Inventories		–		117,693			9,507			–			127,200
	Other current assets		1,245		14,497			1,061			–			16,803
	Total current assets		26,551		282,146			20,131			–			328,828
	Property, plant, and equipment, net		–		117,395			13,081			–			130,476
	Goodwill		–		334,123			6,819			–			340,942
	Acquired intangibles		–		84,667			5,627			–			90,294
	Other assets		3,294		3,201			–			–			6,495
	Investment in subsidiaries		651,528		32,499			–			(684,027	)		–
		$	681,373	$	854,031		$	45,658		$	(684,027	)	$	897,035
	Liabilities and Shareholders' Equity
	Current liabilities:
	Accounts payable	$	–	$	75,171		$	7,642		$	–		$	82,813
	Accrued expenses		1,885		38,225			2,629			–			42,739
	Current maturities of long-term debt		–		405			–			–			405
	Total current liabilities		1,885		113,801			10,271			–			125,957
	Long-term debt		210,000		3,600			–			–			213,600
	Deferred income taxes		–		52,759			2,354			–			55,113
	Other non-current liabilities		–		32,343			534			–			32,877
	Shareholders' equity		469,488		651,528			32,499			(684,027	)		469,488
		$	681,373	$	854,031		$	45,658		$	(684,027	)	$	897,035
	GIBRALTAR INDUSTRIES, INC. CONSOLIDATING BALANCE SHEETS
	DECEMBER 31, 2013 (in thousands)
			Gibraltar		Guarantor			Non-Guarantor
			Industries, Inc.		Subsidiaries			Subsidiaries			Eliminations			Total
	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 THREE MONTHS ENDED MARCH 31, 2014 (in thousands)
			Gibraltar						Non -
			Industries,			Guarantor			Guarantor
			Inc.			Subsidiaries			Subsidiaries		Eliminations		Total
	Cash Flows from Operating Activities
	Net cash (used in) provided by operating activities of continuing operations	$	(6,639	)	$	(8,985	)	$	998		$ –	$	(14,626	)
	Net cash used in operating activities of discontinued operations		–			–			–		–		–
	Net cash (used in) provided by operating activities		(6,639	)		(8,985	)		998		–		(14,626	)
	Cash Flows from Investing Activities
	Purchases of property, plant, and equipment		–			(2,474	)		(1,582	)	–		(4,056	)
	Net proceeds from sale of property and equipment		–			135			2		–		137
	Net cash used in investing activities		–			(2,339	)		(1,580	)	–		(3,919	)
	Cash Flows from Financing Activities
	Long-term debt payments		–			(2	)		–		–		(2	)
	Purchase of treasury stock at market prices		(408	)		–			–		–		(408	)
	Net proceeds from issuance of common stock		365			–			–		–		365
	Intercompany financing		6,591			(6,929	)		338		–		–
	Excess tax benefit from stock compensation		91			–			–		–		91
	Net cash provided by (used in) financing activities		6,639			(6,931	)		338		–		46
	Effect of exchange rate changes on cash		–			–			(354	)	–		(354	)
	Net decrease in cash and cash equivalents		–			(18,255	)		(598	)	–		(18,853	)
	Cash and cash equivalents at beginning of year		–			75,856			21,183		–		97,039
	Cash and cash equivalents at end of period		$ –		$	57,601		$	20,585		$ –	$	78,186
	GIBRALTAR INDUSTRIES, INC.
	CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS THREE MONTHS ENDED MARCH 31, 2013 (in thousands)
									Non-
			Gibraltar			Guarantor			Guarantor
			Industries, Inc.			Subsidiaries			Subsidiaries		Eliminations		Total
	Cash Flows from Operating Activities
	Net cash (used in) provided by operating activities of continuing operations	$	(2,878	)	$	(10,125	)	$	316		$ –	$	(12,687	)
	Net cash used in operating activities of discontinued operations		–			(7	)		–		–		(7	)
	Net cash (used in) provided by operating activities		(2,878	)		(10,132	)		316		–		(12,694	)
	Cash Flows from Investing Activities
	Purchases of property, plant, and equipment		–			(1,641	)		(338	)	–		(1,979	)
	Net proceeds from sale of property and equipment		–			127			–		–		127
	Net cash used in investing activities		–			(1,514	)		(338	)	–		(1,852	)
	Cash Flows from Financing Activities
	Long-term debt payments		(204,000	)		(678	)		–		–		(204,678	)
	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		(636	)		–			–		–		(636	)
	Payment of deferred financing costs		(3,705	)		(6	)		–		–		(3,711	)
	Net proceeds from issuance of common stock		327			–			–		–		327
	Intercompany financing		4,511			(4,458	)		(53	)	–		–
	Excess tax benefit from stock compensation		83			–			–		–		83
	Net cash provided by (used in) financing activities		2,878			(5,142	)		(53	)	–		(2,317	)
	Effect of exchange rate changes on cash		–			–			(877	)	–		(877	)
	Net decrease in cash and cash equivalents		–			(16,788	)		(952	)	–		(17,740	)
	Cash and cash equivalents at beginning of year		–			26,163			21,865		–		48,028
	Cash and cash equivalents at end of period	$	–		$	9,375		$	20,913		$ –	$	30,288

Inventories_Schedule_Of_Invent

Inventories (Schedule Of Inventories) (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Inventories [Abstract]	'	'
Raw material	$54,830	$52,751
Work-in-process	11,310	11,100
Finished goods	61,060	57,301
Total inventories	$127,200	$121,152

Acquisitions_Narrative_Details

Acquisitions (Narrative) (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013	Sep. 30, 2013
Acquisitions [Abstract]	'	'	'	'
Aggregate purchase consideration	$7,454,000	'	'	$7,454,000
Fair value of business acquistion obligation	1,891,000	'	1,864,000	2,322,000
Adjustment to payable, expense recorded	27,000	'	'	'
Excess consideration recorded as goodwill	2,466,000	'	'	'
Legal and consulting fees	2,000	117,000	'	'
Additional cost of sales	$206,000	$203,000	'	'

Acquisitions_Allocation_Of_Pur

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

Acquisitions_Schedule_Of_Acqui

Acquisitions (Schedule Of Acquired Intangible Assets) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014
Acquired Finite-Lived Intangible Assets [Line Items]	'
Fair Value	$2,170
Customer Relationships [Member]	'
Acquired Finite-Lived Intangible Assets [Line Items]	'
Fair Value	1,130
Estimated Useful Life	'15 years
Unpatented Technology And Patents [Member]	'
Acquired Finite-Lived Intangible Assets [Line Items]	'
Fair Value	260
Estimated Useful Life	'15 years
Non-Compete Agreements [Member]	'
Acquired Finite-Lived Intangible Assets [Line Items]	'
Fair Value	140
Estimated Useful Life	'5 years
Trademarks [Member]	'
Acquired Finite-Lived Intangible Assets [Line Items]	'
Fair Value	$640
Estimated Useful Life	'Indefinite

Goodwill_And_Related_Intangibl2

Goodwill And Related Intangible Assets (Narrative) (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Goodwill And Related Intangible Assets [Abstract]	'	'	'
Accumulated impairment losses	$150,965,000	'	$150,965,000
Acquired intangible asset amortization expense	$1,439,000	$1,719,000	'

Goodwill_And_Related_Intangibl3

Goodwill And Related Intangible Assets (Schedule Of Changes In Carrying Amount Of Goodwill) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014
Goodwill [Line Items]	'
Balance as of December 31, 2013	$341,174
Foreign currency translation	-232
Balance as of March 31, 2014	340,942
Residential Products [Member]	'
Goodwill [Line Items]	'
Balance as of December 31, 2013	195,520
Foreign currency translation	'
Balance as of March 31, 2014	195,520
Industrial and Infrastructure Products [Member]	'
Goodwill [Line Items]	'
Balance as of December 31, 2013	145,654
Foreign currency translation	-232
Balance as of March 31, 2014	$145,422

Goodwill_And_Related_Intangibl4

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

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

In Thousands, unless otherwise specified

Amortizable Trademarks [Member]

Amortizable Trademarks [Member]

Unpatented Technology And Patents [Member]

Unpatented Technology And Patents [Member]

Customer Relationships [Member]

Customer Relationships [Member]

Non-Compete Agreements [Member]

Non-Compete Agreements [Member]

Backlog [Member]

Backlog [Member]

Minimum [Member]

Minimum [Member]

Minimum [Member]

Minimum [Member]

Minimum [Member]

Maximum [Member]

Maximum [Member]

Maximum [Member]

Maximum [Member]

Maximum [Member]

Amortizable Trademarks [Member]

Unpatented Technology And Patents [Member]

Customer Relationships [Member]

Non-Compete Agreements [Member]

Backlog [Member]

Amortizable Trademarks [Member]

Unpatented Technology And Patents [Member]

Customer Relationships [Member]

Non-Compete Agreements [Member]

Backlog [Member]

Finite-Lived Intangible Assets [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Gross Carrying Amount, Indefinite-lived intangible assets

'

'

$45,744

$45,724

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Gross Carrying Amount, Finite-lived intangible assets

86,036

86,117

3,950

3,989

24,690

24,690

54,129

54,171

1,937

1,937

1,330

1,330

'

'

'

'

'

'

'

'

'

'

Total acquired intangible assets, Gross Carrying Amount

131,780

131,841

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Accumulated Amortization, Indefinite-lived intangible assets

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Accumulated Amortization, Finite-lived intangible assets

41,486

40,064

1,525

1,420

7,428

6,980

29,750

28,926

1,453

1,408

1,330

1,330

'

'

'

'

'

'

'

'

'

'

Total acquired intangible assets, Accumulated Amortization

$41,486

$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 $)	Mar. 31, 2014
In Thousands, unless otherwise specified
Goodwill And Related Intangible Assets [Abstract]	'
2014	$4,276
2015	5,578
2016	5,243
2017	4,882
2018	4,320
2019	$2,172

Related_Party_Transactions_Det

Related Party Transactions (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013	Dec. 31, 2014
			Scenario, Forecast [Member]
Related Party Transaction [Line Items]	'	'	'
Accounts payable	$159,000	$296,000	'
Monthly consulting agreement fee through December 2014	'	'	$10,000

Related_Party_Transactions_Sch

Related Party Transactions (Schedule Of Related Party Legal Expense) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Related Party Transactions [Abstract]	'	'
Selling, general, and administrative expense	$220	$304
Capitalized as deferred financing costs	'	208
Total related-party legal costs	$220	$512

LongTerm_Debt_Narrative_Detail

Long-Term Debt (Narrative) (Details) (USD $)	3 Months Ended				3 Months Ended
	Mar. 31, 2014	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2014	Mar. 31, 2014	Jan. 31, 2013	Mar. 31, 2014	Mar. 31, 2014
		Senior Credit Agreement [Member]	Senior Subordinated 8% Notes, Due December 1, 2015 [Member]	Senior Subordinated 8% Notes, Due December 1, 2015 [Member]	Revolving Credit Facility [Member]	Senior Subordinated 6.25% Notes Due February 1, 2021 [Member]	Senior Subordinated 6.25% Notes Due February 1, 2021 [Member]	Minimum [Member]	Maximum [Member]
								Revolving Credit Facility [Member]	Revolving Credit Facility [Member]
Debt Instrument [Line Items]	'	'	'	'	'	'	'	'	'
Standby letters of credit	'	$12,868,000	'	'	'	'	'	'	'
Revolving credit facility, availability amount	'	'	'	'	116,712,000	'	'	'	'
Maximum borrowing capacity under the revolving credit facility	'	200,000,000	'	'	'	'	'	'	'
Revolving credit facility, increase, additional borrowings	'	250,000,000	'	'	'	'	'	'	'
Long-term debt description	'	'	'	'	'	'	'	'	'
	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 Senior Credit Agreement provides for a revolving credit facility and letters of credit in an aggregate amount that does not 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. The Company can request additional financing from the banks to increase the revolving credit facility to $250 million under the terms of the Senior Credit Agreement.
	The terms of the Senior Credit Agreement provide that the revolving credit facility will terminate on 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 of $12,868,000 have been issued under the Senior Credit Agreement to third parties on behalf of the Company as of March 31, 2014. These letters of credit reduce the amount otherwise available under the revolving credit facility. As of March 31, 2014, based upon the Company's current borrowing base calculation, the Company had $116,712,000 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 March 31, 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.
	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 and included in other assets.
Revolving credit facility termination date	'	'	'	'	10-Oct-16	'	'	'	'
Revolving credit facility, annual commitment fee	'	'	'	'	0.38%	'	'	'	'
LIBOR floor, plus	'	'	'	'	'	'	'	2.00%	2.50%
Senior Subordinated Notes, interest rate	'	'	'	8.00%	'	6.25%	'	'	'
Fixed charge coverage ratio	'	125.00%	'	'	'	'	'	'	'
Debt instrument, issuance date	'	'	'	'	'	31-Jan-13	'	'	'
Debt instrument, issued value	'	'	'	204,000,000	'	'	210,000,000	'	'
Debt instrument, maturity date	'	'	'	'	'	1-Feb-21	'	'	'
Prepayment premium for extinguishment of debt	'	'	3,702,000	'	'	'	'	'	'
Loss on extinguishment of debt	'	'	7,166,000	'	'	'	'	'	'
Write-off deferred financing fees	'	'	2,199,000	'	'	'	'	'	'
Write off of debt discount	'	'	1,265,000	'	'	'	'	'	'
Placement and other fees	'	'	'	'	'	$3,755,000	'	'	'

LongTerm_Debt_Schedule_Of_Long

Long-Term Debt (Schedule Of Long-Term Debt) (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
Debt Instrument [Line Items]	'	'
Total debt	$214,005,000	$214,007,000
Less current maturities	405,000	409,000
Total long-term debt	213,600,000	213,598,000
Senior Subordinated 6.25% Notes Due February 1, 2021 [Member]	'	'
Debt Instrument [Line Items]	'	'
Total debt	210,000,000	210,000,000
Senior Subordinated Notes, interest rate	6.25%	'
Senior Subordinated 8% Notes, Due December 1, 2015 [Member]	'	'
Debt Instrument [Line Items]	'	'
Senior Subordinated Notes, interest rate	8.00%	'
Other Debt [Member]	'	'
Debt Instrument [Line Items]	'	'
Total debt	$4,005,000	$4,007,000

Accumulated_Other_Comprehensiv2

Accumulated Other Comprehensive Income (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Component of Other Income, Nonoperating [Line Items]	'	'
Accumulated other comprehensive loss, net of tax, Balance at December 31, 2013	($3,585)	'
Accumulated other comprehensive loss, net of tax, Current period change	-883	-3,057
Accumulated other comprehensive loss, net of tax, Balance at March 31, 2014	-4,468	'
Foreign Currency Translation Adjustment [Member]	'	'
Component of Other Income, Nonoperating [Line Items]	'	'
Accumulated other comprehensive loss, net of tax, Balance at December 31, 2013	-2,201	'
Accumulated other comprehensive loss, net of tax, Current period change	-904	'
Accumulated other comprehensive loss, net of tax, Balance at March 31, 2014	-3,105	'
Minimum Pension Liability Adjustment [Member]	'	'
Component of Other Income, Nonoperating [Line Items]	'	'
Accumulated other comprehensive loss, net of tax, Balance at December 31, 2013	45	'
Accumulated other comprehensive loss, net of tax, Current period change	2	'
Accumulated other comprehensive loss, net of tax, Balance at March 31, 2014	47	'
Unamortized Post-Retirement Health Care Costs [Member]	'	'
Component of Other Income, Nonoperating [Line Items]	'	'
Accumulated other comprehensive loss, net of tax, Balance at December 31, 2013	-1,429	'
Accumulated other comprehensive loss, net of tax, Current period change	19	'
Accumulated other comprehensive loss, net of tax, Balance at March 31, 2014	($1,410)	'

EquityBased_Compensation_Narra

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

3 Months Ended

12 Months Ended

3 Months Ended

12 Months Ended

3 Months Ended

12 Months Ended

12 Months Ended

Mar. 31, 2014

Mar. 31, 2013

Dec. 31, 2013

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2013

Dec. 31, 2013

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Dec. 31, 2013

Dec. 31, 2012

Mar. 31, 2014

Jan. 31, 2012

Dec. 31, 2013

Mar. 31, 2014

Jan. 31, 2013

Mar. 31, 2014

Jan. 31, 2014

2005 Equity Incentive Plan [Member]

Performance Stock Units [Member]

Management Stock Purchase Plan [Member]

Management Stock Purchase Plan [Member]

Management Stock Purchase Plan [Member]

Minimum [Member]

Maximum [Member]

Unvested Restricted Stock Units [Member]

Unvested Restricted Stock Units [Member]

Awarded January 2012 [Member]

Awarded January 2012 [Member]

Awarded January 2012 [Member]

Awarded January 2013 [Member]

Awarded January 2013 [Member]

Awarded January 2013 [Member]

Awarded January 2014 [Member]

Awarded January 2014 [Member]

Performance Stock Units [Member]

Performance Stock Units [Member]

Performance Stock Units [Member]

Performance Stock Units [Member]

Performance Stock Units [Member]

Performance Stock Units [Member]

Performance Stock Units [Member]

Performance Stock Units [Member]

Performance Stock Units [Member]

Performance Stock Units [Member]

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

'

246,000

304,000

212,000

212,000

Performance stock unit grant-date fair value

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$4,152,000

'

'

$4,123,000

'

$3,914,000

Performance stock unit vesting period

'

'

'

'

'

'

'

'

'1 year

'3 years

'

'

'

'

'

'

'

'

'

'

Percentage of target performance stock units earned

'

'

'

'

'

'

'

'

'

'

'

'

58.30%

'

'

50.00%

'

'

'

'

Performance stock units earned

'

'

'

'

'

'

'

'

'

'

'

'

163,200

'

'

123,000

'

'

'

'

Performance stock units target awards

'

'

'

'

'

'

'

'

'

'

'

'

280,000

'

'

246,000

'

'

'

'

Period for recognition

'

'

'

'

'

'

'

'

'1 year

'3 years

'

'

'

'

'

'

'

'

'

'

Years of service

'

'

'

'

'5 years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Average closing price, number of days trailing

'

'

'

'

'90 days

'200 days

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Weighted average fair value of per unit awarded

'

'

'

'

'

$16.20

'

$15.97

'

'

'

'

'

'

'

'

'

'

'

'

Number of restricted stock units credited to participant accounts

722,931

'

614,888

'

'

108,043

183,178

'

'

'

62,133

47,268

'

'

'

'

'

'

'

'

MSPP company matching portion, vesting age

'60 years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Accrues interest

'

'

'

'

'

2.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Disbursements of MSPP

$395,000

$531,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

EquityBased_Compensation_Sched

Equity-Based Compensation (Schedule Of Number Of Awards And Weighted Average Grant Date Fair Value) (Details) (Restricted Stock Units [Member], USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Restricted Stock Units [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Number of Awards	88,755	72,165
Weighted Average Grant Date Fair Value	$18.42	$16.50

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 [Member], USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Performance Stock Units [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Performance stock unit compensation expense	$1,137	$1,501

Fair_Value_Measurements_Detail

Fair Value Measurements (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013
	item
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]	'	'	'
Fair value of contingent consideration liability	$1,891,000	$1,864,000	$2,322,000
Carrying value of outstanding debt	214,005,000	214,007,000	'
Number of completed acquisitions	1	'	'
Long-Term Debt [Member]	'	'	'
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]	'	'	'
Fair value of outstanding debt	227,524,000	'	'
Carrying value of outstanding debt	214,005,000	'	'
Senior Subordinated 6.25% Notes Due February 1, 2021 [Member]	'	'	'
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]	'	'	'
Carrying value of outstanding debt	$210,000,000	$210,000,000	'
Senior Subordinated Notes, interest rate	6.25%	'	'

Exit_Activity_Costs_And_Asset_2

Exit Activity Costs And Asset Impairments (Narrative) (Details) (USD $)	3 Months Ended
	Mar. 31, 2014
	item
Restructuring Cost and Reserve [Line Items]	'
Number of consolidated facilities	2
Asset impairment charges related to facility consolidations	$83,000
Scenario, Forecast [Member]	'
Restructuring Cost and Reserve [Line Items]	'
Additional costs related to facility consolidations	$700,000

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
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Restructuring Cost and Reserve [Line Items]	'	'
Total exit activity costs and asset impairments	$429	$29
Residential Products [Member]	'	'
Restructuring Cost and Reserve [Line Items]	'	'
Total exit activity costs and asset impairments	327	29
Industrial and Infrastructure Products [Member]	'	'
Restructuring Cost and Reserve [Line Items]	'	'
Total exit activity costs and asset impairments	102	'
Corporate [Member]	'	'
Restructuring Cost and Reserve [Line Items]	'	'
Total exit activity costs and asset impairments	'	'

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
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Restructuring Cost and Reserve [Line Items]	'	'
Total exit activity costs and asset impairments	$429	$29
Cost Of Sales [Member]	'	'
Restructuring Cost and Reserve [Line Items]	'	'
Total exit activity costs and asset impairments	325	29
Selling, General, And Administrative Expense [Member]	'	'
Restructuring Cost and Reserve [Line Items]	'	'
Total exit activity costs and asset impairments	$104	'

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 $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Exit Activity Costs And Asset Impairments [Abstract]	'	'
Balance as of January 1	$1,092	$1,323
Exit activity costs recognized	346	29
Cash payments	-536	-315
Balance as of March 31	$902	$1,037

Income_Taxes_Narrative_Details

Income Taxes (Narrative) (Details)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Income Taxes [Abstract]	'	'
Statutory tax rate, percentage	35.00%	35.00%

Income_Taxes_Provision_For_Inc

Income Taxes (Provision For Income Taxes For Continuing Operations) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Income Taxes [Abstract]	'	'
Benefit of income taxes	$1,251	$2,255
Effective tax rate	37.50%	38.20%

Net_Earnings_Per_Share_Details

Net Earnings Per Share (Details) (USD $)	3 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Net Earnings Per Share [Abstract]	'	'
Loss from continuing operations	($2,086)	($3,643)
Loss from discontinued operations	'	-4
Net loss	($2,086)	($3,647)
Weighted average shares outstanding	31,034,000	30,877,000
Weighted average shares and conversions	31,034,000	30,877,000
Anti-dilutive shares excluded from dilutive loss per share calculation	209,000	182,000

Segment_Information_Details

Segment Information (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
	segment
Segment Reporting, Other Significant Reconciling Item [Line Items]	'	'
Number of reportable segments	2	'
Net sales	$191,032	$196,801
Income (loss) from operations	29,864	36,177
Unallocated Corporate Expenses	-4,868	-7,769
Income from operations	333	5,196
Residential Products [Member]	'	'
Segment Reporting, Other Significant Reconciling Item [Line Items]	'	'
Net sales	86,983	89,664
Income (loss) from operations	2,093	6,638
Industrial and Infrastructure Products [Member]	'	'
Segment Reporting, Other Significant Reconciling Item [Line Items]	'	'
Net sales	104,346	107,467
Income (loss) from operations	3,108	6,327
Less: Intersegment Sales [Member]	'	'
Segment Reporting, Other Significant Reconciling Item [Line Items]	'	'
Net sales	-297	-330
Intersegment Elimination [Member] | Industrial and Infrastructure Products [Member]	'	'
Segment Reporting, Other Significant Reconciling Item [Line Items]	'	'
Net sales	$104,049	$107,137

Supplemental_Financial_Informa2

Supplemental Financial Information (Narrative) (Details)	3 Months Ended
	Mar. 31, 2014
Schedule Of Supplemental Financial Information [Line Items]	'
Ownership percentage	100.00%
Senior Subordinated 6.25% Notes Due February 1, 2021 [Member]	'
Schedule Of Supplemental Financial Information [Line Items]	'
Senior Subordinated Notes, interest rate	6.25%
Senior Subordinated Notes, maturity date	1-Feb-21

Supplemental_Financial_Informa3

Supplemental Financial Information (Schedule Of Consolidating Statements Of Operations) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Schedule Of Supplemental Financial Information [Line Items]	'	'
Net sales	$191,032	$196,801
Cost of sales	161,168	160,624
Gross profit	29,864	36,177
Selling, general, and administrative expense	29,531	30,981
(Loss) income from operations	333	5,196
Interest expense (income)	3,640	11,160
Other expense (income)	30	-66
(Loss) income before taxes	-3,337	-5,898
(Benefit of) provision for income taxes	-1,251	-2,255
(Loss) income from continuing operations	-2,086	-3,643
Loss from discontinued operations before taxes	'	-7
Benefit of income taxes	'	-3
Loss from discontinued operations	'	-4
Net loss	-2,086	-3,647
Gibraltar Industries, Inc. [Member]	'	'
Schedule Of Supplemental Financial Information [Line Items]	'	'
Selling, general, and administrative expense	36	158
(Loss) income from operations	-36	-158
Interest expense (income)	3,361	10,883
(Loss) income before taxes	-3,397	-11,041
(Benefit of) provision for income taxes	-1,177	-4,197
(Loss) income from continuing operations	-2,220	-6,844
Equity in earnings from subsidiaries	315	3,407
Net loss	-1,905	-3,437
Guarantor Subsidiaries [Member]	'	'
Schedule Of Supplemental Financial Information [Line Items]	'	'
Net sales	172,781	178,049
Cost of sales	145,161	144,395
Gross profit	27,620	33,654
Selling, general, and administrative expense	27,763	28,881
(Loss) income from operations	-143	4,773
Interest expense (income)	314	308
Other expense (income)	30	-66
(Loss) income before taxes	-487	4,531
(Benefit of) provision for income taxes	-234	1,758
(Loss) income from continuing operations	-253	2,773
Loss from discontinued operations before taxes	'	-7
Benefit of income taxes	'	-3
Loss from discontinued operations	'	-4
Equity in earnings from subsidiaries	568	638
Net loss	315	3,407
Non-Guarantor Subsidiaries [Member]	'	'
Schedule Of Supplemental Financial Information [Line Items]	'	'
Net sales	22,919	23,217
Cost of sales	20,494	20,484
Gross profit	2,425	2,733
Selling, general, and administrative expense	1,732	1,942
(Loss) income from operations	693	791
Interest expense (income)	-35	-31
(Loss) income before taxes	728	822
(Benefit of) provision for income taxes	160	184
(Loss) income from continuing operations	568	638
Net loss	568	638
Eliminations [Member]	'	'
Schedule Of Supplemental Financial Information [Line Items]	'	'
Net sales	-4,668	-4,465
Cost of sales	-4,487	-4,255
Gross profit	-181	-210
(Loss) income from operations	-181	-210
(Loss) income before taxes	-181	-210
(Loss) income from continuing operations	-181	-210
Equity in earnings from subsidiaries	-883	-4,045
Net loss	($1,064)	($4,255)

Supplemental_Financial_Informa4

Supplemental Financial Information (Schedule Of Consolidating Statements Of Comprehensive Income) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Schedule Of Supplemental Financial Information [Line Items]	'	'
Net (loss) income	($2,086)	($3,647)
Other comprehensive (loss) income:	'	'
Foreign currency translation adjustment	-904	-3,097
Adjustment to retirement benefit liability, net of tax	2	2
Adjustment to post-retirement health care liability, net of tax	19	38
Other comprehensive income (loss)	-883	-3,057
Total comprehensive loss	-2,969	-6,704
Gibraltar Industries, Inc. [Member]	'	'
Schedule Of Supplemental Financial Information [Line Items]	'	'
Net (loss) income	-1,905	-3,437
Other comprehensive (loss) income:	'	'
Total comprehensive loss	-1,905	-3,437
Guarantor Subsidiaries [Member]	'	'
Schedule Of Supplemental Financial Information [Line Items]	'	'
Net (loss) income	315	3,407
Other comprehensive (loss) income:	'	'
Adjustment to retirement benefit liability, net of tax	2	2
Adjustment to post-retirement health care liability, net of tax	19	38
Other comprehensive income (loss)	21	40
Total comprehensive loss	336	3,447
Non-Guarantor Subsidiaries [Member]	'	'
Schedule Of Supplemental Financial Information [Line Items]	'	'
Net (loss) income	568	638
Other comprehensive (loss) income:	'	'
Foreign currency translation adjustment	-904	-3,097
Other comprehensive income (loss)	-904	-3,097
Total comprehensive loss	-336	-2,459
Eliminations [Member]	'	'
Schedule Of Supplemental Financial Information [Line Items]	'	'
Net (loss) income	-1,064	-4,255
Other comprehensive (loss) income:	'	'
Total comprehensive loss	($1,064)	($4,255)

Supplemental_Financial_Informa5

Supplemental Financial Information (Schedule Of Consolidating Balance Sheets) (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Schedule Of Supplemental Financial Information [Line Items]	'	'	'	'
Cash and cash equivalents	$78,186	$97,039	$30,288	$48,028
Accounts receivable, net	106,639	90,082	'	'
Inventories	127,200	121,152	'	'
Other current assets	16,803	14,127	'	'
Total current assets	328,828	322,400	'	'
Property, plant, and equipment, net	130,476	131,752	'	'
Goodwill	340,942	341,174	'	'
Acquired intangibles	90,294	91,777	'	'
Other assets	6,495	7,059	'	'
Total assets	897,035	894,162	'	'
Accounts payable	82,813	69,625	'	'
Accrued expenses	42,739	49,879	'	'
Current maturities of long-term debt	405	409	'	'
Total current liabilities	125,957	119,913	'	'
Long-term debt	213,600	213,598	'	'
Deferred income taxes	55,113	55,124	'	'
Other non-current liabilities	32,877	33,778	'	'
Total shareholders' equity	469,488	471,749	'	'
Total liabilities and shareholders' equity	897,035	894,162	'	'
Gibraltar Industries, Inc. [Member]	'	'	'	'
Schedule Of Supplemental Financial Information [Line Items]	'	'	'	'
Intercompany balances	25,306	23,618	'	'
Other current assets	1,245	7,578	'	'
Total current assets	26,551	31,196	'	'
Other assets	3,294	3,415	'	'
Investment in subsidiaries	651,528	652,689	'	'
Total assets	681,373	687,300	'	'
Accrued expenses	1,885	5,551	'	'
Total current liabilities	1,885	5,551	'	'
Long-term debt	210,000	210,000	'	'
Total shareholders' equity	469,488	471,749	'	'
Total liabilities and shareholders' equity	681,373	687,300	'	'
Guarantor Subsidiaries [Member]	'	'	'	'
Schedule Of Supplemental Financial Information [Line Items]	'	'	'	'
Cash and cash equivalents	57,601	75,856	9,375	26,163
Accounts receivable, net	94,937	79,356	'	'
Intercompany balances	-2,582	-1,655	'	'
Inventories	117,693	111,676	'	'
Other current assets	14,497	5,722	'	'
Total current assets	282,146	270,955	'	'
Property, plant, and equipment, net	117,395	119,587	'	'
Goodwill	334,123	334,123	'	'
Acquired intangibles	84,667	86,014	'	'
Other assets	3,201	3,643	'	'
Investment in subsidiaries	32,499	33,259	'	'
Total assets	854,031	847,581	'	'
Accounts payable	75,171	62,464	'	'
Accrued expenses	38,225	42,418	'	'
Current maturities of long-term debt	405	409	'	'
Total current liabilities	113,801	105,291	'	'
Long-term debt	3,600	3,598	'	'
Deferred income taxes	52,759	52,746	'	'
Other non-current liabilities	32,343	33,257	'	'
Total shareholders' equity	651,528	652,689	'	'
Total liabilities and shareholders' equity	854,031	847,581	'	'
Non-Guarantor Subsidiaries [Member]	'	'	'	'
Schedule Of Supplemental Financial Information [Line Items]	'	'	'	'
Cash and cash equivalents	20,585	21,183	20,913	21,865
Accounts receivable, net	11,702	10,726	'	'
Intercompany balances	-22,724	-21,963	'	'
Inventories	9,507	9,476	'	'
Other current assets	1,061	827	'	'
Total current assets	20,131	20,249	'	'
Property, plant, and equipment, net	13,081	12,165	'	'
Goodwill	6,819	7,051	'	'
Acquired intangibles	5,627	5,763	'	'
Other assets	'	1	'	'
Total assets	45,658	45,229	'	'
Accounts payable	7,642	7,161	'	'
Accrued expenses	2,629	1,910	'	'
Total current liabilities	10,271	9,071	'	'
Deferred income taxes	2,354	2,378	'	'
Other non-current liabilities	534	521	'	'
Total shareholders' equity	32,499	33,259	'	'
Total liabilities and shareholders' equity	45,658	45,229	'	'
Eliminations [Member]	'	'	'	'
Schedule Of Supplemental Financial Information [Line Items]	'	'	'	'
Cash and cash equivalents	'	'	'	'
Investment in subsidiaries	-684,027	-685,948	'	'
Total assets	-684,027	-685,948	'	'
Total shareholders' equity	-684,027	-685,948	'	'
Total liabilities and shareholders' equity	($684,027)	($685,948)	'	'

Supplemental_Financial_Informa6

Supplemental Financial Information (Schedule Of Condensed Consolidating Statements Of Cash Flows) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Schedule Of Supplemental Financial Information [Line Items]	'	'
Net cash (used in) provided by operating activities of continuing operations	($14,626)	($12,687)
Net cash used in operating activities of discontinued operations	'	-7
Net cash (used in) provided by operating activities	-14,626	-12,694
Purchases of property, plant, and equipment	-4,056	-1,979
Net proceeds from sale of property and equipment	137	127
Net cash used in investing activities	-3,919	-1,852
Long-term debt payments	-2	-204,678
Proceeds from long-term debt	'	210,000
Payment of note redemption fees	'	-3,702
Purchase of treasury stock at market prices	-408	-636
Payment of deferred financing costs	'	-3,711
Net proceeds from issuance of common stock	365	327
Excess tax benefit from stock compensation	91	83
Net cash provided by (used in) financing activities	46	-2,317
Effect of exchange rate changes on cash	-354	-877
Net decrease in cash and cash equivalents	-18,853	-17,740
Cash and cash equivalents at beginning of year	97,039	48,028
Cash and cash equivalents at end of period	78,186	30,288
Gibraltar Industries, Inc. [Member]	'	'
Schedule Of Supplemental Financial Information [Line Items]	'	'
Net cash (used in) provided by operating activities of continuing operations	-6,639	-2,878
Net cash used in operating activities of discontinued operations	'	'
Net cash (used in) provided by operating activities	-6,639	-2,878
Long-term debt payments	'	-204,000
Proceeds from long-term debt	'	210,000
Payment of note redemption fees	'	-3,702
Purchase of treasury stock at market prices	-408	-636
Payment of deferred financing costs	'	-3,705
Net proceeds from issuance of common stock	365	327
Intercompany financing	6,591	4,511
Excess tax benefit from stock compensation	91	83
Net cash provided by (used in) financing activities	6,639	2,878
Guarantor Subsidiaries [Member]	'	'
Schedule Of Supplemental Financial Information [Line Items]	'	'
Net cash (used in) provided by operating activities of continuing operations	-8,985	-10,125
Net cash used in operating activities of discontinued operations	'	-7
Net cash (used in) provided by operating activities	-8,985	-10,132
Purchases of property, plant, and equipment	-2,474	-1,641
Net proceeds from sale of property and equipment	135	127
Net cash used in investing activities	-2,339	-1,514
Long-term debt payments	-2	-678
Payment of deferred financing costs	'	-6
Intercompany financing	-6,929	-4,458
Net cash provided by (used in) financing activities	-6,931	-5,142
Net decrease in cash and cash equivalents	-18,255	-16,788
Cash and cash equivalents at beginning of year	75,856	26,163
Cash and cash equivalents at end of period	57,601	9,375
Non-Guarantor Subsidiaries [Member]	'	'
Schedule Of Supplemental Financial Information [Line Items]	'	'
Net cash (used in) provided by operating activities of continuing operations	998	316
Net cash used in operating activities of discontinued operations	'	'
Net cash (used in) provided by operating activities	998	316
Purchases of property, plant, and equipment	-1,582	-338
Net proceeds from sale of property and equipment	2	'
Net cash used in investing activities	-1,580	-338
Intercompany financing	338	-53
Net cash provided by (used in) financing activities	338	-53
Effect of exchange rate changes on cash	-354	-877
Net decrease in cash and cash equivalents	-598	-952
Cash and cash equivalents at beginning of year	21,183	21,865
Cash and cash equivalents at end of period	20,585	20,913
Eliminations [Member]	'	'
Schedule Of Supplemental Financial Information [Line Items]	'	'
Net cash (used in) provided by operating activities of continuing operations	'	'
Net cash used in operating activities of discontinued operations	'	'
Net cash (used in) provided by operating activities	'	'
Purchases of property, plant, and equipment	'	'
Net proceeds from sale of property and equipment	'	'
Net cash used in investing activities	'	'
Long-term debt payments	'	'
Proceeds from long-term debt	'	'
Payment of note redemption fees	'	'
Purchase of treasury stock at market prices	'	'
Payment of deferred financing costs	'	'
Net proceeds from issuance of common stock	'	'
Intercompany financing	'	'
Excess tax benefit from stock compensation	'	'
Net cash provided by (used in) financing activities	'	'
Effect of exchange rate changes on cash	'	'
Net decrease in cash and cash equivalents	'	'
Cash and cash equivalents at beginning of year	'	'
Cash and cash equivalents at end of period	'	'