Gibraltar Industries (ROCK) 10-Q 5 May 17 2017 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2017	May 03, 2017
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q1
Trading Symbol	ROCK
Entity Registrant Name	GIBRALTAR INDUSTRIES, INC.
Entity Central Index Key	912,562
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		31,581,944

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Income Statement [Abstract]
Net Sales	$ 206,605	$ 237,671
Cost of sales	157,350	183,521
Gross profit	49,255	54,150
Selling, general, and administrative expense	39,576	36,389
Income from operations	9,679	17,761
Interest expense	3,576	3,691
Other expense (income)	54	(35)
Income before taxes	6,049	14,105
Provision for income taxes	2,053	5,076
Net income	$ 3,996	$ 9,029
Net earnings per share:
Net earnings per share - Basic (in USD per share)	$ 0.13	$ 0.29
Net earnings per share - Diluted (in USD per share)	$ 0.12	$ 0.28
Weighted average shares outstanding:
Weighted average shares outstanding, basic (in USD per share)	31,688	31,423
Weighted average shares outstanding, diluted (in USD per share)	32,254	31,790

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Net income	$ 3,996	$ 9,029
Other comprehensive income (loss):
Foreign currency translation adjustment	679	3,078
Adjustment to retirement benefit liability, net of tax	(3)	(1)
Adjustment to post employment health care benefit liability, net of tax	29	38
Other comprehensive income	705	3,115
Total comprehensive income	$ 4,701	$ 12,144

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 160,901	$ 170,177
Accounts receivable, net	128,482	124,072
Inventories	86,943	89,612
Other current assets	5,957	7,336
Total current assets	382,283	391,197
Property, plant, and equipment, net	98,691	108,304
Goodwill	320,411	304,032
Acquired intangibles	112,533	110,790
Other assets	4,548	3,922
Total assets	918,466	918,245
Current liabilities:
Accounts payable	76,894	69,944
Accrued expenses	66,253	70,392
Billings in excess of cost	14,452	11,352
Current maturities of long-term debt	400	400
Total current liabilities	157,999	152,088
Long-term debt	209,433	209,237
Deferred income taxes	38,089	38,002
Other non-current liabilities	46,640	58,038
Shareholders’ equity:
Preferred stock, $0.01 par value; authorized 10,000 shares; none outstanding	0	0
Common stock, $0.01 par value; authorized 50,000 shares; 32,133 shares and 32,085 shares issued and outstanding in 2017 and 2016	321	320
Additional paid-in capital	265,809	264,418
Retained earnings	215,998	211,748
Accumulated other comprehensive loss	(7,016)	(7,721)
Cost of 552 and 530 common shares held in treasury in 2017 and 2016	(8,807)	(7,885)
Total shareholders’ equity	466,305	460,880
Total liabilities and shareholders' equity	$ 918,466	$ 918,245

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Mar. 31, 2017	Dec. 31, 2016
Statement of Financial Position [Abstract]
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	32,133,000	32,085,000
Treasury stock, shares	552,000	530,000

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Cash Flows from Operating Activities
Net income	$ 3,996	$ 9,029
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	5,480	6,054
Stock compensation expense	1,635	1,348
Net loss (gain) on sale of assets	12	(189)
Exit activity (recoveries) costs, non-cash	(917)	910
Other, net	240	(220)
Changes in operating assets and liabilities, excluding the effects of acquisitions:
Accounts receivable	(4,462)	14,880
Inventories	2,338	117
Other current assets and other assets	410	(254)
Accounts payable	5,672	(5,101)
Accrued expenses and other non-current liabilities	(12,061)	(11,033)
Net cash provided by operating activities	2,343	15,541
Cash Flows from Investing Activities
Cash paid for acquisitions, net of cash acquired	(18,561)	(2,314)
Net proceeds from sale of property and equipment	9,233	57
Purchases of property, plant, and equipment	(1,453)	(1,501)
Other, net	0	1,118
Net cash used in investing activities	(10,781)	(2,640)
Cash Flows from Financing Activities
Payment of debt issuance costs	0	54
Purchase of treasury stock at market prices	(922)	(414)
Net proceeds from issuance of common stock	11	133
Net cash used in financing activities	(911)	(335)
Effect of exchange rate changes on cash	73	1,203
Net (decrease) increase in cash and cash equivalents	(9,276)	13,769
Cash and cash equivalents at beginning of year	170,177	68,858
Cash and cash equivalents at end of period	$ 160,901	$ 82,627

Consolidated Statement of Share

Consolidated Statement of Shareholders' Equity - 3 months ended Mar. 31, 2017 - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Loss	Treasury Stock
Balance, shares at Dec. 31, 2016		32,085				530
Balance, value at Dec. 31, 2016	$ 460,880	$ 320	$ 264,418	$ 211,748	$ (7,721)	$ (7,885)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	3,996			3,996
Foreign currency translation adjustment	679				679
Adjustment to retirement benefit liability, net of taxes of ($2)	(3)				(3)
Adjustment to post employment health care benefit liability, net of taxes of $19	29				29
Stock compensation expense	1,635		1,635
Cumulative effect of accounting change (see Note 2)	0		(254)	254
Stock options exercised, shares		1
Stock options exercised	11	$ 0	11
Net settlement of restricted stock units, shares		47				22
Net settlement of restricted stock units	(922)	$ 1	(1)			$ (922)
Balance, shares at Mar. 31, 2017		32,133				552
Balance, value at Mar. 31, 2017	$ 466,305	$ 321	$ 265,809	$ 215,998	$ (7,016)	$ (8,807)

Consolidated Statement of Shar8

Consolidated Statement of Shareholders' Equity (Parenthetical) $ in Thousands	3 Months Ended
	Mar. 31, 2017USD ($)
Statement of Stockholders' Equity [Abstract]
Adjustment to pension benefit liability, taxes	$ 1
Adjustment to post-retirement health care benefit liability, taxes	$ (22)

Consolidated Financial Statemen

Consolidated Financial Statements	3 Months Ended
	Mar. 31, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
CONSOLIDATED FINANCIAL STATEMENTS	CONSOLIDATED FINANCIAL STATEMENTS The accompanying unaudited consolidated financial statements have been prepared by management in accordance with U.S. generally accepted accounting principles for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. In the opinion of management, all adjustments consisting of normal recurring adjustments considered necessary for the fair presentation of results for the interim period have been included. The results of operations for the three month periods ended March 31, 2017 are not necessarily indicative of the results expected for the full year. The Company is subject to reduced activity in the first and fourth quarters as colder, inclement weather reduces order rates from end markets it serves. The accompanying unaudited consolidated financial statements should be read in conjunction with the financial statements and notes thereto included in our annual Form 10-K for the year ended December 31, 2016 . Certain prior year amounts have been reclassified to conform to current year's presentation. Refer to Note 2 for a summary of ASUs we adopted during 2017 and the related financial statement impact. Immaterial Adjustment to Previously Reported Interim Period For the quarter ended March 31, 2016, immaterial differences were identified between amounts presented in prior quarterly reports on Form 10-Q and amounts required to be recorded in accordance with U.S. generally accepted accounting principles due to errors in the Company's accounting for estimated total contract costs at completion as it is related to revenue recognition under the percentage of completion accounting method. Refer to the Company's Quarterly Report on Form 10-Q for the quarter ended September 30, 2016 for a complete description of these differences. The corrected amounts for the quarter ended March 31, 2016, are presented in the accompanying consolidated statements of operations, comprehensive income and cash flows.

Recent Accounting Pronouncement

Recent Accounting Pronouncements (Notes)	3 Months Ended
	Mar. 31, 2017
Accounting Policies [Abstract]
RECENT ACCOUNTING PRONOUNCEMENTS	RECENT ACCOUNTING PRONOUNCEMENTS Standard Description Financial Statement Effect or Other Significant Matters ASU No. 2014-09 Revenue from Contracts with Customers (Topic 606) And All Related ASUs The standard requires an entity to recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The standard also requires additional disclosures about the nature, amount, timing, and uncertainty of revenue and cash flows arising from customer contracts, including significant judgments and assets recognized from costs incurred to obtain or fulfill a contract. The provisions of the standard, as well as all subsequently issued clarifications to the standard, are effective for fiscal years beginning after December 15, 2017 and interim periods within those fiscal years. The standard can be adopted using either a full retrospective or modified retrospective approach. The Company currently believes the most significant impact of this standard upon adoption relates to the revenue recognition for custom fabricated products within the Company's Industrial and Infrastructure Products segment. Under this standard, the Company expects to recognize revenue on an over time basis on custom fabricated products in the Industrial and Infrastructure Products segment which is a change from our current revenue recognition policy of point-in-time basis. The Company expects revenue recognition related to the remaining Industrial and Infrastructure Products segment, Residential Products segment and Renewable Energy and Conservation segment to remain substantially unchanged upon adoption of this standard. The Company has identified and is in the process of implementing appropriate changes to the Company's business processes, systems and internal controls to support recognition and disclosure under this standard. The transition method to be adopted by the Company is still currently being evaluated. The Company has not yet completed the process of quantifying the effects of any changes that will result from adoption. Date of adoption: Q1 2018 ASU No. 2016-02 Leases (Topic 842) The standard requires lessees to recognize a lease liability and a right-of-use asset on the balance sheet. The provisions of the standard are effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early adoption is permitted. The Company is currently evaluating the requirements of this standard and has not yet determined its impact on the Company's consolidated financial statements. Date of adoption: Q1 2019 ASU No. 2016-09 Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting The standard simplifies the accounting for share-based payment award transactions including: income tax consequences, classification of awards as either equity or liabilities and classification on the statement of cash flows. The provisions of this standard are effective for fiscal years beginning after December 15, 2016, including interim periods within those fiscal years. Early adoption is permitted. The Company has adopted all amendments included in this standard under each required transition method. The Company concluded there were no material changes to prior periods, except for the following: the Company (a) reclassified its prior interim period excess tax benefit for stock compensation of $187,000 on its consolidated statement of cash flows from a financing activity to an operating activity; and (b) recognized a cumulative-effect adjustment of $254,000 as an increase to retained earnings and decrease to additional paid-in capital on the Company's consolidated statement of shareholders' equity as of January 1, 2017 to reflect the change in value for a restricted stock unit liability award as of December 31, 2016, as if the award had been classified as an equity award since its respective grant date. Date of adoption: Q1 2017 ASU No. 2016-15 Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments The standard provides guidance on eight specific cash flow issues to reduce diversity in reporting. The provisions of this standard are effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. Early adoption is permitted. The Company is currently evaluating the requirements of this standard and has not yet determined its impact on the Company's consolidated financial statements. Date of adoption: Q1 2018 ASU No. 2016-16 Income Taxes (Topic 740): Intra-Entity Transfers of Assets Other Than Inventory The standard allows an entity to recognize income tax consequences of an intra-entity transfer of an asset other than inventory when the transfer occurs. The provisions of this standard are effective for annual reporting periods beginning after December 15, 2017, including interim reporting periods within those annual reporting periods. Early adoption is permitted as of the beginning of an annual reporting period for which financial statements (interim or annual) have not been issued or made available for issuance. The Company is currently evaluating the requirements of this standard and has not yet determined its impact on the Company's consolidated financial statements. Date of adoption: Q1 2018 ASU No. 2017-04 Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment The standard eliminates the "Step 2" analysis to determine the amount of impairment realized when a reporting unit's carrying amount exceeds its fair value in its "Step 1" analysis of accounting for impairment of goodwill. The impairment charge would be the amount determined in "Step 1." The provisions of this standard are effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Early adoption is permitted for annual and interim goodwill impairment testing dates after January 1, 2017. The Company has adopted this standard and it did not have any impact on the Company's consolidated financial statements. Date of Adoption: Q1 2017 ASU No. 2017-07 Compensation - Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost The standard requires an employer to recognize the service cost component of net periodic pension costs and net periodic postretirement benefit costs in the same line item(s) as other compensation costs from services rendered by pertinent employees during the period. Other components of net benefit cost are required to be presented separately from the service cost component and outside a subtotal of income from operations. The provisions of this standard are effective for annual reporting periods beginning after December 15, 2017, including interim periods within those annual periods. Early adoption is permitted as of the beginning of an annual period for which financial statements (interim or annual) have not been issued or made available for issuance. The Company has adopted this standard and has applied it retrospectively for the presentation of the service cost component, as well as, other components of net periodic pension cost and net periodic postretirement benefit cost in our statement of operations. The adoption decreased selling, general, and administrative expense by $160,000, and comparably increased other expense in our prior interim period statement of operations by the same amount. This guidance did not have any impact on our balance sheet or our statement of cash flows. Date of Adoption: Q1 2017

Accounts Receivable

Accounts Receivable	3 Months Ended
	Mar. 31, 2017
Receivables [Abstract]
ACCOUNTS RECEIVABLE	ACCOUNTS RECEIVABLE, NET Accounts receivable consists of the following (in thousands): March 31, 2017 December 31, 2016 Trade accounts receivable $ 87,669 $ 81,193 Contract receivables: Amounts billed 35,551 41,569 Costs in excess of billings 10,699 6,582 Total contract receivables 46,250 48,151 Total accounts receivable 133,919 129,344 Less allowance for doubtful accounts (5,437 ) (5,272 ) Accounts receivable $ 128,482 $ 124,072 Contract receivables are primarily associated with developers, contractors and customers in connection with the Renewable Energy and Conservation segment. Costs in excess of billings principally represent revenues recognized on contracts that were not billable as of the balance sheet date. These amounts will be billed in accordance with contract terms, generally as certain milestones are reached or upon shipment. All of the costs in excess of billings are expected to be collected within one year. In situations where billings exceed revenues recognized, the excess is included in billings in excess of cost in the Consolidated Balance Sheet.

Inventories

Inventories	3 Months Ended
	Mar. 31, 2017
Inventory Disclosure [Abstract]
INVENTORIES	INVENTORIES Inventories consist of the following (in thousands): March 31, 2017 December 31, 2016 Raw material $ 40,521 $ 41,758 Work-in-process 12,644 12,268 Finished goods 33,778 35,586 Total inventories $ 86,943 $ 89,612

Acquisitions

Acquisitions	3 Months Ended
	Mar. 31, 2017
Business Combinations [Abstract]
ACQUISITIONS	ACQUISITIONS On February 22, 2017, the Company acquired all of the outstanding stock of Package Concierge. Package Concierge is a leading provider of multifamily electronic package delivery locker systems in the United States. The acquisition of Package Concierge is expected to enable the Company to expand its position in the fast-growing package delivery solutions market. The results of Package Concierge have been included in the Company's consolidated financial results since the date of acquisition (within the Company's Residential Products segment). The preliminary aggregate purchase consideration for the acquisition of Package Concierge was $18,892,000 as of March 31, 2017 , which includes a working capital adjustment and certain other adjustments provided for in the stock purchase agreement. The acquisition was financed through cash on hand. The preliminary 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 approximated $16,710,000 , which is not deductible for tax purposes. Goodwill represents future economic benefits arising from other assets acquired that could not be individually identified including workforce additions, growth opportunities, and increased presence in the building products markets. The allocation of the preliminary purchase consideration to the fair value of the assets acquired and liabilities assumed is as follows as of the date of the acquisition (in thousands): Cash $ 590 Working capital deficiency (2,071 ) Property, plant and equipment 55 Acquired intangible assets 3,600 Other assets 8 Goodwill 16,710 Fair value of purchase consideration $ 18,892 The intangible assets acquired in this acquisition consisted of the following (in thousands): Fair Value Estimated Trademarks $ 600 Indefinite Technology 1,300 10 years Customer relationships 1,700 7 years Total $ 3,600 On October 11, 2016, the Company acquired all of the outstanding stock of Nexus Corporation ("Nexus"). Nexus is a leading provider of commercial-scale greenhouses to customers in the United States. The acquisition of Nexus is expected to enable the Company to strengthen its position in the commercial greenhouse market in the United States. The results of Nexus have been included in the Company's consolidated financial results since the date of acquisition (within the Company's Renewable Energy and Conservation segment). The final aggregate purchase consideration for the acquisition of Nexus was $23,762,000 , which includes a working capital adjustment and certain other adjustments provided for in the stock purchase agreement. The remaining estimated purchase adjustment accrued as of December 31, 2016 of $1,000,000 was reduced to $168,000 and was paid by the Company during the first quarter of 2017. 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 approximated $11,451,000 , of which all is deductible for tax purposes. The allocation of the purchase consideration to the fair value of the assets acquired and liabilities assumed is as follows as of the date of the acquisition (in thousands): Cash $ 2,495 Working capital (1,109 ) Property, plant and equipment 4,702 Acquired intangible assets 6,200 Other assets 23 Goodwill 11,451 Fair value of purchase consideration $ 23,762 The intangible assets acquired in this acquisition consisted of the following (in thousands): Fair Value Estimated Trademarks $ 3,200 Indefinite Technology 1,300 15 years Customer relationships 800 11 years Backlog 900 0.25 years Total $ 6,200 The acquisitions of Package Concierge and Nexus were funded from available cash on hand. The Company incurred certain acquisition-related costs of $102,000 and $31,000 during the three months ended March 31, 2017 and 2016 , respectively. These costs were composed of legal and consulting fees, and were recognized as a component of selling, general and administrative expenses in the consolidated statements of operations.

Goodwill and Related Intangible

Goodwill and Related Intangible Assets	3 Months Ended
	Mar. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
GOODWILL AND RELATED INTANGIBLE ASSETS	GOODWILL AND RELATED INTANGIBLE ASSETS Goodwill The changes in the carrying amount of goodwill for the three months ended March 31, 2017 are as follows (in thousands): Residential Products Industrial and Infrastructure Products Renewable Energy & Conservation Total Balance at December 31, 2016 $ 181,285 $ 53,884 $ 68,863 $ 304,032 Acquired goodwill 16,710 — — 16,710 Adjustments to prior year acquisitions — — (832 ) (832 ) Foreign currency translation — 46 455 501 Balance at March 31, 2017 $ 197,995 $ 53,930 $ 68,486 $ 320,411 Goodwill is recognized net of accumulated impairment losses of $235,419,000 as of March 31, 2017 and December 31, 2016 . Acquired Intangible Assets Acquired intangible assets consist of the following (in thousands): March 31, 2017 December 31, 2016 Gross Carrying Amount Accumulated Amortization Gross Carrying Amount Accumulated Amortization Estimated Life Indefinite-lived intangible assets: Trademarks $ 45,352 $ — $ 44,720 $ — Indefinite Finite-lived intangible assets: Trademarks 5,815 2,584 5,808 2,427 5 to 15 Years Unpatented technology 28,020 10,519 26,720 10,041 5 to 20 Years Customer relationships 80,596 35,096 78,569 33,585 5 to 17 Years Non-compete agreements 1,649 700 1,649 623 4 to 10 Years Backlog 900 900 900 900 0.5 to 2 Years 116,980 49,799 113,646 47,576 Total acquired intangible assets $ 162,332 $ 49,799 $ 158,366 $ 47,576 The following table summarizes the acquired intangible asset amortization expense for the three months ended March 31 (in thousands): Three Months Ended 2017 2016 Amortization expense $ 2,162 $ 2,181 Amortization expense related to acquired intangible assets for the remainder of fiscal 2017 and the next five years thereafter is estimated as follows (in thousands): 2017 $6,581 2018 $8,277 2019 $7,607 2020 $7,094 2021 $6,493 2022 $6,082

Long-Term Debt

Long-Term Debt	3 Months Ended
	Mar. 31, 2017
Long-term Debt, Unclassified [Abstract]
LONG-TERM DEBT	LONG-TERM DEBT Long-term debt consists of the following (in thousands): March 31, 2017 December 31, 2016 Senior Subordinated 6.25% Notes $ 210,000 $ 210,000 Other debt 2,800 2,800 Less unamortized debt issuance costs (2,967 ) (3,163 ) Total debt 209,833 209,637 Less current maturities 400 400 Total long-term debt $ 209,433 $ 209,237 The Company's Fifth Amended and Restated Credit Agreement dated December 9, 2015 (the "Senior Credit Agreement") was amended to convert our secured asset based credit facility into a secured cash flow revolver, and terminates on December 9, 2020. The Senior Credit Agreement provides for a revolving credit facility and letters of credit in an aggregate amount of $300 million . The Company has the option to request additional financing from the banks to either increase the revolving credit facility to $500 million or to provide a term loan of up to $200 million . The Senior Credit Agreement contains financial covenants. As of March 31, 2017, the Company is in compliance with all covenants. 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. Interest rates on the revolving credit facility are based on the LIBOR plus an additional margin that ranges from 1.25% to 2.25% for LIBOR loans based on the Total Leverage Ratio. In addition, the revolving credit facility is subject to an undrawn commitment fee ranging between 0.20% and 0.30% based on the Total Leverage Ratio and the daily average undrawn balance. Standby letters of credit of $13,081,000 have been issued under the Senior Credit Agreement on behalf of the Company as of March 31, 2017 . These letters of credit reduce the amount otherwise available under the revolving credit facility. As of March 31, 2017 , the Company had $286,919,000 of availability under the revolving credit facility. No borrowings were outstanding under the revolving credit facility at March 31, 2017 and December 31, 2016 . On January 31, 2013 , the Company issued $210 million of 6.25% Senior Subordinated Notes ( 6.25% Notes) due February 1, 2021 .The provisions of the 6.25% Notes include, without limitation, restrictions on indebtedness, liens, and distributions from restricted subsidiaries, asset sales, affiliate transactions, dividends, and other restricted payments. Dividend payments are subject to annual limits and interest is paid semiannually on February 1 and August 1 of each year.

Related Party Transactions

Related Party Transactions	3 Months Ended
	Mar. 31, 2017
Related Party Transactions [Abstract]
RELATED PARTY TRANSACTIONS	RELATED PARTY TRANSACTIONS An officer of one of the Company's operating segments is the owner of certain real estate properties leased for manufacturing and distribution purposes by that operating segment. The leases are in effect until June 2018 and June 2020. For the three months ended March 31, 2017 and 2016, the Company incurred the following lease expense for these properties. Three Months Ended 2017 2016 Cost of sales $ 262 $ 217

Accumulated Other Comprehensive

Accumulated Other Comprehensive (Loss) Income	3 Months Ended
	Mar. 31, 2017
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
ACCUMULATED OTHER COMPREHENSIVE (LOSS) INCOME	ACCUMULATED OTHER COMPREHENSIVE (LOSS) INCOME The cumulative balance of each component of accumulated other comprehensive loss, net of tax, is as follows (in thousands): Foreign Currency Translation Adjustment Minimum Pension Unamortized Post Retirement Health Total Pre-Tax Amount Tax (Benefit) Expense Accumulated Other Balance at December 31, 2016 $ (5,848 ) $ 197 $ (3,150 ) $ (8,801 ) $ (1,080 ) $ (7,721 ) Minimum pension and post retirement health care plan adjustments — (5 ) 48 43 17 26 Foreign currency translation adjustment 679 — — 679 — 679 Balance at March 31, 2017 $ (5,169 ) $ 192 $ (3,102 ) $ (8,079 ) $ (1,063 ) $ (7,016 ) The realized adjustments relating to the Company’s minimum pension liability and post retirement health care costs were reclassified from accumulated other comprehensive loss and included in other expense in the consolidated statements of operations.

Equity-Based Compensation

Equity-Based Compensation	3 Months Ended
	Mar. 31, 2017
Share-based Compensation [Abstract]
EQUITY-BASED COMPENSATION	EQUITY-BASED COMPENSATION On May 6, 2016, the shareholders of the Company authorized the Gibraltar Industries, Inc. 2016 Stock Plan for Non-Employee Directors ("Non-Employee Directors Plan"). The Non-Employee Directors Plan is a compensation plan that allows the Company to grant awards of shares of the Company's common stock to non-employee Directors of the Company. In connection with the Non-Employee Directors Plan, the Company adopted a new stock deferral plan, the Gibraltar Industries, Inc. Non-Employee Director Stock Deferral Plan ("Deferral Plan"). The Deferral Plan permits non-employee Directors of the Company to defer receipt of shares of common stock which the non-employee Director is entitled to receive pursuant to the terms of the Non-Employee Directors Plan. On May 7, 2015, the shareholders of the Company authorized the Gibraltar Industries, Inc. 2015 Equity Incentive Plan (the "Plan") and simultaneously amended the 2005 Equity Incentive Plan (the "Prior Plan") to terminate issuance of further awards from the Prior Plan. The Plan is an incentive compensation plan that allows the Company to grant equity-based incentive compensation awards to eligible participants. Awards under the Plan may be in the form of options, restricted shares, restricted units, performance shares, performance stock units, and rights. Equity Based Awards - Settled in Stock The following table provides the number of stock unit awards granted which will convert to shares upon vesting during the three months ended March 31, along with the weighted average grant date fair values: 2017 2016 Awards Number of Awards Weighted Average Grant Date Fair Value Number of Awards Weighted Average Grant Date Fair Value Performance stock units 98,482 $ 43.05 — $ — Restricted stock units 59,112 $ 43.05 94,489 $ 20.43 Options 20,000 $ 43.05 — $ — Included in the performance stock units disclosed above are 78,482 units awarded in February 2017 for which the final number of units that will convert to shares will be determined based on the Company’s actual return on invested capital (ROIC) relative to the ROIC targeted for the performance period ended December 31, 2017 . The remaining 20,000 units were also awarded in February 2017. The number of shares to be issued to the recipient will be determined based upon the ranking of the Company’s total shareholder return over a three (3) year performance period ended February 1, 2020 compared to the total shareholder return of companies in the S&P Small Cap Industrial Sector over such period. Performance Stock Units - Settled in Cash The Company awarded performance stock units ("PSUs") that will convert to cash after three years based upon a one year performance period in 2016, 2015 and 2014. The cost of these awards is recognized over the requisite vesting period. The PSUs earned over the performance period are determined based on the Company’s actual return on invested capital (ROIC) relative to the ROIC targeted for the performance period. During the 2016 performance period, the participants earned an aggregate of 250,000 PSUs, representing 200% of the targeted 2016 award of 125,000 . This award will convert to cash payable in January 2019. During the 2015 performance period, the participants earned an aggregate of 438,000 PSUs, representing 200% of the targeted 2015 award of 219,000 . This award will convert to cash payable in January 2018. The following table summarizes the compensation expense recognized for the PSUs which will convert to cash for the three months ended March 31, (in thousands): Three Months Ended 2017 2016 Performance stock unit compensation expense $ 1,737 $ 825 Management Stock Purchase Plan The Management Stock Purchase Plan ("MSPP") provides participants the ability to defer a portion of their compensation, which deferral is converted to restricted stock units, and credited to an account. Under the MSPP, the Company provides a matching award in restricted stock units equal to a percentage of the employees' compensation. Matching awards are not provided to directors. The account represents a share-based liability converted to and settled in cash which is payable to participants upon retirement or a termination of their service to the Company. The following table provides the number of restricted stock units credited to participant accounts and the payments made with respect to restricted stock units issued under the MSPP during the three months ended March 31, 2017 2016 Restricted stock units credited 98,770 179,620 Share-based liabilities paid (in $1000s) $ 2,353 $ 1,984

Fair Value Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2017
Fair Value Disclosures [Abstract]
FAIR VALUE MEASUREMENTS	FAIR VALUE MEASUREMENTS Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. Depending on the nature of the asset or liability, various techniques and assumptions can be used to estimate 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 follows: • Level 1 - Quoted prices in active markets for identical assets or liabilities. • Level 2 - Observable inputs other than quoted prices in active markets for similar assets and liabilities. • Level 3 - Inputs that are unobservable inputs for the asset or liability. The Company had no financial assets or liabilities measure at fair value on a recurring basis at March 31, 2017 and December 31, 2016 . The Company’s only financial instrument for which the carrying value differs from its fair value is long-term debt. At March 31, 2017 and December 31, 2016 , the fair value of outstanding debt net of unamortized debt issuance costs was $219,373,000 and $219,898,000 , respectively, compared to its carrying value of $209,833,000 and $209,637,000 , respectively. The fair value of the Company’s Senior Subordinated 6.25% Notes is classified as Level 2 within the fair value hierarchy and was estimated based on quoted market prices adjusted for unamortized debt issuance costs.

Exit Activity Costs and Asset I

Exit Activity Costs and Asset Impairments	3 Months Ended
	Mar. 31, 2017
Restructuring and Related Activities [Abstract]
EXIT ACTIVITY COSTS AND ASSET IMPAIRMENTS	EXIT ACTIVITY COSTS AND ASSET IMPAIRMENTS The Company has entered its third year of a five year planned transformation strategy formulated to transform its operations and improve its financial results over this five year period. This strategy includes an 80/20 simplification initiative which, in part, focuses the Company’s internal resources on further increasing the value provided to our customers. A result of this initiative was the identification of low-volume, low margin, internally-produced products which have been or will be outsourced or discontinued. Portfolio management, another key part of the strategy and a natural adjunct to the 80/20 initiative, is another initiative in which management conducts strategic reviews of our current portfolio for future profitable growth and greater shareholder returns. This initiative has resulted in the sale and exiting of less profitable businesses or products lines in order to enable the Company to re-allocate leadership, time, capital and resources to the highest potential platforms and businesses. Exit activity costs and asset impairment charges were incurred as a result of these initiatives. Exit activity costs were incurred during the three months ended March 31, 2017 which relate to contract termination costs, severance costs, and other moving and closing costs. These costs were the result of the closing and consolidation of facilities, relocation of inventory and equipment at those facilities and the reduction of workforce associated with the discontinued products and closed facilities. During the three months ended March 31, 2017 , asset impairment charges incurred were more than offset by a gain on sale of assets previously impaired in 2016 as a result of businesses and product lines discontinued. Specifically, the exit of both the Company's small European residential solar racking business and the exit of the Company's U.S. bar grating product line, which commenced during the fourth quarter of 2016, transacted sales of assets during the three months ended March 31, 2017 which resulted in a net gain. These exits are expected to be completed in the first half of 2017. During the three months ended March 31, 2017 , asset impairment charges were incurred related to the write-down of inventory and impairment of machinery and equipment associated with either discontinued product lines or the reduction of manufactured goods offered within a product line. These assets were written down to their sale or scrap value, and were subsequently sold or disposed of. During the three months ended March 31, 2017 , the company closed three facilities as a result of these initiatives. During the three months ended March 31, 2016, the Company incurred asset impairment charges and exit activity costs resulting from the above initiatives as well. The following tables set forth the asset impairment charges and exit activity costs in conjunction with these efforts, incurred by segment during the three months ended March 31, related to the restructuring activities described above (in thousands): 2017 2016 Inventory write-downs &/or asset impairment recoveries Exit activity costs Total Inventory write-downs &/or asset impairment charges Exit activity costs Total Residential Products $ (21 ) $ 185 $ 164 $ 688 $ 330 $ 1,018 Industrial & Infrastructure Products (896 ) 2,656 1,760 222 458 680 Renewable Energy & Conservation — 1,050 1,050 — — — Corporate — 28 28 — — — Total exit activity costs & asset impairments $ (917 ) $ 3,919 $ 3,002 $ 910 $ 788 $ 1,698 The following table provides a summary of where the asset impairments and exit activity costs were recorded in the statement of operations for the three months ended March 31, (in thousands): Three Months Ended 2017 2016 Cost of sales $ 994 $ 1,118 Selling, general, and administrative expense 2,008 580 Net asset impairment and exit activity charges $ 3,002 $ 1,698 The following table reconciles the beginning and ending liability for exit activity costs relating to the Company’s facility consolidation efforts (in thousands): 2017 2016 Balance at January 1 $ 3,744 $ 603 Exit activity costs recognized 3,919 788 Cash payments (4,617 ) (430 ) Balance at March 31 $ 3,046 $ 961

Income Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2017
Income Tax Disclosure [Abstract]
INCOME TAXES	INCOME TAXES The following table summarizes the provision for income taxes for continuing operations (in thousands) for the three months ended March 31, and the applicable effective tax rates: Three Months Ended 2017 2016 Provision for income taxes $ 2,053 $ 5,076 Effective tax rate 33.9 % 36.0 % The effective tax rate for the three months ended March 31, 2017 was less than the U.S. federal statutory rate of 35% due to net deductible permanent differences and favorable discrete items partially offset by state taxes and $0.9 million of pretax losses generated by the European residential solar racking business for which no tax benefit has been recorded as such benefit is not expected to be realizable. The effective tax rate for the three months ended March 31, 2016 exceeded the U.S. federal statutory rate of 35% due to state taxes partially offset by deductible permanent differences and favorable discrete items.

Earnings per Share

Earnings per Share	3 Months Ended
	Mar. 31, 2017
Earnings Per Share [Abstract]
EARNINGS PER SHARE	EARNINGS PER SHARE Basic earnings and diluted weighted-average shares outstanding are as follows for the three months ended March 31, (in thousands): Three Months Ended 2017 2016 Numerator: Net income available to common shareholders $ 3,996 $ 9,029 Denominator for basic earnings per share: Weighted average shares outstanding 31,688 31,423 Denominator for diluted earnings per share: Weighted average shares outstanding 31,688 31,423 Common stock options and restricted stock 566 367 Weighted average shares and conversions $ 32,254 $ 31,790 The weighted average number of diluted shares does not include potential anti-dilutive common shares aggregating 526,000 and 723,000 for the three months ended March 31, 2017 and 2016 , respectively.

Segment Information

Segment Information	3 Months Ended
	Mar. 31, 2017
Segment Reporting Information, Revenue for Reportable Segment [Abstract]
SEGMENT INFORMATION	SEGMENT INFORMATION The Company is organized into three 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; (ii) Industrial and Infrastructure Products, which primarily includes expanded and perforated metal, expansion joints and structural bearings; and (iii) Renewable Energy and Conservation, which primarily includes designing, engineering, manufacturing and installation of solar racking systems and greenhouse structures. When determining the reportable segments, the Company aggregated operating segments based on their similar economic and operating characteristics. The following table illustrates certain measurements used by management to assess performance of the segments described above for the three months ended March 31, (in thousands): Three Months Ended 2017 2016 Net sales: Residential Products $ 104,551 $ 100,147 Industrial and Infrastructure Products 50,718 80,017 Less: Intersegment sales (456 ) (367 ) 50,262 79,650 Renewable Energy and Conservation 51,792 57,874 Total consolidated net sales $ 206,605 $ 237,671 Income from operations: Residential Products $ 15,641 $ 12,231 Industrial and Infrastructure Products (37 ) 3,326 Renewable Energy and Conservation 3,340 8,307 Unallocated Corporate Expenses (9,265 ) (6,103 ) Total income from operations $ 9,679 $ 17,761

Supplemental Financial Informat

Supplemental Financial Information	3 Months Ended
	Mar. 31, 2017
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
SUPPLEMENTAL FINANCIAL INFORMATION	SUPPLEMENTAL FINANCIAL INFORMATION The following information sets forth the consolidating summary financial statements of the issuer (Gibraltar Industries, Inc.) and guarantors, which guarantee the Senior Subordinated 6.25% Notes due February 1, 2021 , and the non-guarantors. The guarantors are 100% owned domestic 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, 2017 (in thousands) Gibraltar Industries, Inc. Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Total Net sales $ — $ 197,748 $ 11,242 $ (2,385 ) $ 206,605 Cost of sales — 150,507 8,982 (2,139 ) 157,350 Gross profit — 47,241 2,260 (246 ) 49,255 Selling, general, and administrative expense 43 36,506 3,027 — 39,576 (Loss) income from operations (43 ) 10,735 (767 ) (246 ) 9,679 Interest expense (income) 3,402 192 (18 ) — 3,576 Other expense (income) — 130 (76 ) — 54 (Loss) income before taxes (3,445 ) 10,413 (673 ) (246 ) 6,049 (Benefit of) provision for income taxes (1,344 ) 3,378 19 — 2,053 Equity in earnings from subsidiaries 6,343 (692 ) — (5,651 ) — Net income (loss) $ 4,242 $ 6,343 $ (692 ) $ (5,897 ) $ 3,996 GIBRALTAR INDUSTRIES, INC. CONSOLIDATING STATEMENTS OF OPERATIONS THREE MONTHS ENDED MARCH 31, 2016 (in thousands) Gibraltar Industries, Inc. Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Total Net sales $ — $ 215,213 $ 27,293 $ (4,835 ) $ 237,671 Cost of sales — 165,439 22,640 (4,558 ) 183,521 Gross profit — 49,774 4,653 (277 ) 54,150 Selling, general, and administrative expense 40 31,911 4,438 — 36,389 (Loss) income from operations (40 ) 17,863 215 (277 ) 17,761 Interest expense (income) 3,403 310 (22 ) — 3,691 Other (income) expense (46 ) 216 (205 ) — (35 ) (Loss) income before taxes (3,397 ) 17,337 442 (277 ) 14,105 (Benefit of) provision for income taxes (1,207 ) 6,092 191 — 5,076 Equity in earnings from subsidiaries 11,496 251 — (11,747 ) — Net income $ 9,306 $ 11,496 $ 251 $ (12,024 ) $ 9,029 GIBRALTAR INDUSTRIES, INC. CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME THREE MONTHS ENDED MARCH 31, 2017 (in thousands) Gibraltar Industries, Inc. Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Total Net income (loss) $ 4,242 $ 6,343 $ (692 ) $ (5,897 ) $ 3,996 Other comprehensive income (loss): Foreign currency translation adjustment — — 679 — 679 Adjustment to retirement benefit liability, net of tax — (3 ) — — (3 ) Adjustment to post employment health care benefit liability, net of tax — 29 — — 29 Other comprehensive income — 26 679 — 705 Total comprehensive income (loss) $ 4,242 $ 6,369 $ (13 ) $ (5,897 ) $ 4,701 GIBRALTAR INDUSTRIES, INC. CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME THREE MONTHS ENDED MARCH 31, 2016 (in thousands) Gibraltar Industries, Inc. Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Total Net income $ 9,306 $ 11,496 $ 251 $ (12,024 ) $ 9,029 Other comprehensive income (loss): Foreign currency translation adjustment — — 3,078 — 3,078 Adjustment to retirement benefit liability, net of tax — (1 ) — — (1 ) Adjustment to post employment health care benefit liability, net of tax — 38 — — 38 Other comprehensive income — 37 3,078 — 3,115 Total comprehensive income (loss) $ 9,306 $ 11,533 $ 3,329 $ (12,024 ) $ 12,144 GIBRALTAR INDUSTRIES, INC. CONSOLIDATING BALANCE SHEETS MARCH 31, 2017 (in thousands) Gibraltar Industries, Inc. Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Total Assets Current assets: Cash and cash equivalents $ — $ 138,763 $ 22,138 $ — $ 160,901 Accounts receivable, net — 121,615 6,867 — 128,482 Intercompany balances (11,508 ) 15,414 (3,906 ) — — Inventories — 82,288 4,655 — 86,943 Other current assets 1,424 1,262 3,271 — 5,957 Total current assets (10,084 ) 359,342 33,025 — 382,283 Property, plant, and equipment, net — 95,183 3,508 — 98,691 Goodwill — 298,179 22,232 — 320,411 Acquired intangibles — 103,223 9,310 — 112,533 Other assets — 4,548 — — 4,548 Investment in subsidiaries 688,635 58,481 — (747,116 ) — $ 678,551 $ 918,956 $ 68,075 $ (747,116 ) $ 918,466 Liabilities and Shareholders’ Equity Current liabilities: Accounts payable $ — $ 73,838 $ 3,056 $ — $ 76,894 Accrued expenses 4,088 60,307 1,858 — 66,253 Billings in excess of cost — 12,491 1,961 14,452 Current maturities of long-term debt — 400 — — 400 Total current liabilities 4,088 147,036 6,875 — 157,999 Long-term debt 208,158 1,275 — — 209,433 Deferred income taxes — 35,370 2,719 — 38,089 Other non-current liabilities — 46,640 — — 46,640 Shareholders’ equity 466,305 688,635 58,481 (747,116 ) 466,305 $ 678,551 $ 918,956 $ 68,075 $ (747,116 ) $ 918,466 GIBRALTAR INDUSTRIES, INC. CONSOLIDATING BALANCE SHEETS DECEMBER 31, 2016 (in thousands) Gibraltar Industries, Inc. Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Total Assets Current assets: Cash and cash equivalents $ — $ 143,826 $ 26,351 $ — $ 170,177 Accounts receivable, net — 117,526 6,546 — 124,072 Intercompany balances (615 ) 6,152 (5,537 ) — — Inventories — 85,483 4,129 — 89,612 Other current assets 13,783 (10,070 ) 3,623 — 7,336 Total current assets 13,168 342,917 35,112 — 391,197 Property, plant, and equipment, net — 104,642 3,662 — 108,304 Goodwill — 282,300 21,732 — 304,032 Acquired intangibles — 101,520 9,270 — 110,790 Other assets — 3,922 — — 3,922 Investment in subsidiaries 663,118 58,477 — (721,595 ) — $ 676,286 $ 893,778 $ 69,776 $ (721,595 ) $ 918,245 Liabilities and Shareholders’ Equity Current liabilities: Accounts payable $ — $ 66,363 $ 3,581 $ — $ 69,944 Accrued expenses 7,369 60,004 3,019 — 70,392 Billings in excess of cost — 9,301 2,051 — 11,352 Current maturities of long-term debt — 400 — — 400 Total current liabilities 7,369 136,068 8,651 — 152,088 Long-term debt 208,037 1,200 — — 209,237 Deferred income taxes — 35,354 2,648 — 38,002 Other non-current liabilities — 58,038 — — 58,038 Shareholders’ equity 460,880 663,118 58,477 (721,595 ) 460,880 $ 676,286 $ 893,778 $ 69,776 $ (721,595 ) $ 918,245 GIBRALTAR INDUSTRIES, INC. CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS THREE MONTHS ENDED MARCH 31, 2017 (in thousands) Gibraltar Industries, Inc. Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Total Cash Flows from Operating Activities Net cash (used in) provided by operating activities $ (6,605 ) $ 12,141 $ (3,193 ) $ — $ 2,343 Cash Flows from Investing Activities Cash paid for acquisitions — (18,561 ) — — (18,561 ) Net proceeds from sale of property and equipment — 9,081 152 — 9,233 Purchases of property, plant, and equipment — (1,326 ) (127 ) — (1,453 ) Net cash (used in) provided by investing activities — (10,806 ) 25 — (10,781 ) Cash Flows from Financing Activities Purchase of treasury stock at market prices (922 ) — — — (922 ) Net proceeds from issuance of common stock 11 — — — 11 Intercompany financing 7,516 (6,398 ) (1,118 ) — — Net cash provided by (used in) financing activities 6,605 (6,398 ) (1,118 ) — (911 ) Effect of exchange rate changes on cash — — 73 — 73 Net decrease in cash and cash equivalents — (5,063 ) (4,213 ) — (9,276 ) Cash and cash equivalents at beginning of year — 143,826 26,351 — 170,177 Cash and cash equivalents at end of period $ — $ 138,763 $ 22,138 $ — $ 160,901 GIBRALTAR INDUSTRIES, INC. CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS THREE MONTHS ENDED MARCH 31, 2016 (in thousands) Gibraltar Industries, Inc. Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Total Cash Flows from Operating Activities Net cash (used in) provided by operating activities $ (6,371 ) $ 23,251 $ (1,339 ) $ — $ 15,541 Cash Flows from Investing Activities Cash paid for acquisitions — (2,314 ) — — (2,314 ) Net proceeds from sale of property and equipment — 57 — — 57 Purchases of property, plant, and equipment — (1,356 ) (145 ) — (1,501 ) Other, net — 1,118 — — 1,118 Net cash used in investing activities — (2,495 ) (145 ) — (2,640 ) Cash Flows from Financing Activities Payment of debt issuance costs — (54 ) — — (54 ) Purchase of treasury stock at market prices (414 ) — — — (414 ) Net proceeds from issuance of common stock 133 — — — 133 Intercompany financing 6,652 (7,144 ) 492 — — Net cash provided by (used in) financing activities 6,371 (7,198 ) 492 — (335 ) Effect of exchange rate changes on cash — — 1,203 — 1,203 Net increase in cash and cash equivalents — 13,558 211 — 13,769 Cash and cash equivalents at beginning of year — 39,597 29,261 — 68,858 Cash and cash equivalents at end of period $ — $ 53,155 $ 29,472 $ — $ 82,627

Recent Accounting Pronounceme25

Recent Accounting Pronouncements (Policies)	3 Months Ended
	Mar. 31, 2017
Accounting Policies [Abstract]
Recent Accounting Pronouncements	Standard Description Financial Statement Effect or Other Significant Matters ASU No. 2014-09 Revenue from Contracts with Customers (Topic 606) And All Related ASUs The standard requires an entity to recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The standard also requires additional disclosures about the nature, amount, timing, and uncertainty of revenue and cash flows arising from customer contracts, including significant judgments and assets recognized from costs incurred to obtain or fulfill a contract. The provisions of the standard, as well as all subsequently issued clarifications to the standard, are effective for fiscal years beginning after December 15, 2017 and interim periods within those fiscal years. The standard can be adopted using either a full retrospective or modified retrospective approach. The Company currently believes the most significant impact of this standard upon adoption relates to the revenue recognition for custom fabricated products within the Company's Industrial and Infrastructure Products segment. Under this standard, the Company expects to recognize revenue on an over time basis on custom fabricated products in the Industrial and Infrastructure Products segment which is a change from our current revenue recognition policy of point-in-time basis. The Company expects revenue recognition related to the remaining Industrial and Infrastructure Products segment, Residential Products segment and Renewable Energy and Conservation segment to remain substantially unchanged upon adoption of this standard. The Company has identified and is in the process of implementing appropriate changes to the Company's business processes, systems and internal controls to support recognition and disclosure under this standard. The transition method to be adopted by the Company is still currently being evaluated. The Company has not yet completed the process of quantifying the effects of any changes that will result from adoption. Date of adoption: Q1 2018 ASU No. 2016-02 Leases (Topic 842) The standard requires lessees to recognize a lease liability and a right-of-use asset on the balance sheet. The provisions of the standard are effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early adoption is permitted. The Company is currently evaluating the requirements of this standard and has not yet determined its impact on the Company's consolidated financial statements. Date of adoption: Q1 2019 ASU No. 2016-09 Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting The standard simplifies the accounting for share-based payment award transactions including: income tax consequences, classification of awards as either equity or liabilities and classification on the statement of cash flows. The provisions of this standard are effective for fiscal years beginning after December 15, 2016, including interim periods within those fiscal years. Early adoption is permitted. The Company has adopted all amendments included in this standard under each required transition method. The Company concluded there were no material changes to prior periods, except for the following: the Company (a) reclassified its prior interim period excess tax benefit for stock compensation of $187,000 on its consolidated statement of cash flows from a financing activity to an operating activity; and (b) recognized a cumulative-effect adjustment of $254,000 as an increase to retained earnings and decrease to additional paid-in capital on the Company's consolidated statement of shareholders' equity as of January 1, 2017 to reflect the change in value for a restricted stock unit liability award as of December 31, 2016, as if the award had been classified as an equity award since its respective grant date. Date of adoption: Q1 2017 ASU No. 2016-15 Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments The standard provides guidance on eight specific cash flow issues to reduce diversity in reporting. The provisions of this standard are effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. Early adoption is permitted. The Company is currently evaluating the requirements of this standard and has not yet determined its impact on the Company's consolidated financial statements. Date of adoption: Q1 2018 ASU No. 2016-16 Income Taxes (Topic 740): Intra-Entity Transfers of Assets Other Than Inventory The standard allows an entity to recognize income tax consequences of an intra-entity transfer of an asset other than inventory when the transfer occurs. The provisions of this standard are effective for annual reporting periods beginning after December 15, 2017, including interim reporting periods within those annual reporting periods. Early adoption is permitted as of the beginning of an annual reporting period for which financial statements (interim or annual) have not been issued or made available for issuance. The Company is currently evaluating the requirements of this standard and has not yet determined its impact on the Company's consolidated financial statements. Date of adoption: Q1 2018 ASU No. 2017-04 Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment The standard eliminates the "Step 2" analysis to determine the amount of impairment realized when a reporting unit's carrying amount exceeds its fair value in its "Step 1" analysis of accounting for impairment of goodwill. The impairment charge would be the amount determined in "Step 1." The provisions of this standard are effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Early adoption is permitted for annual and interim goodwill impairment testing dates after January 1, 2017. The Company has adopted this standard and it did not have any impact on the Company's consolidated financial statements. Date of Adoption: Q1 2017 ASU No. 2017-07 Compensation - Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost The standard requires an employer to recognize the service cost component of net periodic pension costs and net periodic postretirement benefit costs in the same line item(s) as other compensation costs from services rendered by pertinent employees during the period. Other components of net benefit cost are required to be presented separately from the service cost component and outside a subtotal of income from operations. The provisions of this standard are effective for annual reporting periods beginning after December 15, 2017, including interim periods within those annual periods. Early adoption is permitted as of the beginning of an annual period for which financial statements (interim or annual) have not been issued or made available for issuance. The Company has adopted this standard and has applied it retrospectively for the presentation of the service cost component, as well as, other components of net periodic pension cost and net periodic postretirement benefit cost in our statement of operations. The adoption decreased selling, general, and administrative expense by $160,000, and comparably increased other expense in our prior interim period statement of operations by the same amount. This guidance did not have any impact on our balance sheet or our statement of cash flows. Date of Adoption: Q1 2017

Accounts Receivable (Tables)

Accounts Receivable (Tables)	3 Months Ended
	Mar. 31, 2017
Receivables [Abstract]
Schedule of Accounts Receivable	Accounts receivable consists of the following (in thousands): March 31, 2017 December 31, 2016 Trade accounts receivable $ 87,669 $ 81,193 Contract receivables: Amounts billed 35,551 41,569 Costs in excess of billings 10,699 6,582 Total contract receivables 46,250 48,151 Total accounts receivable 133,919 129,344 Less allowance for doubtful accounts (5,437 ) (5,272 ) Accounts receivable $ 128,482 $ 124,072

Inventories (Tables)

Inventories (Tables)	3 Months Ended
	Mar. 31, 2017
Inventory Disclosure [Abstract]
Schedule Of Inventories	Inventories consist of the following (in thousands): March 31, 2017 December 31, 2016 Raw material $ 40,521 $ 41,758 Work-in-process 12,644 12,268 Finished goods 33,778 35,586 Total inventories $ 86,943 $ 89,612

Acquisitions (Tables)

Acquisitions (Tables)	3 Months Ended
	Mar. 31, 2017
Business Combinations [Abstract]
Allocation Of Purchase Consideration To The Assets Acquired And Liabilities Assumed	The allocation of the preliminary purchase consideration to the fair value of the assets acquired and liabilities assumed is as follows as of the date of the acquisition (in thousands): Cash $ 590 Working capital deficiency (2,071 ) Property, plant and equipment 55 Acquired intangible assets 3,600 Other assets 8 Goodwill 16,710 Fair value of purchase consideration $ 18,892 The allocation of the purchase consideration to the fair value of the assets acquired and liabilities assumed is as follows as of the date of the acquisition (in thousands): Cash $ 2,495 Working capital (1,109 ) Property, plant and equipment 4,702 Acquired intangible assets 6,200 Other assets 23 Goodwill 11,451 Fair value of purchase consideration $ 23,762
Intangible Assets Acquired	The intangible assets acquired in this acquisition consisted of the following (in thousands): Fair Value Estimated Trademarks $ 600 Indefinite Technology 1,300 10 years Customer relationships 1,700 7 years Total $ 3,600 The intangible assets acquired in this acquisition consisted of the following (in thousands): Fair Value Estimated Trademarks $ 3,200 Indefinite Technology 1,300 15 years Customer relationships 800 11 years Backlog 900 0.25 years Total $ 6,200

Goodwill and Related Intangib29

Goodwill and Related Intangible Assets (Tables)	3 Months Ended
	Mar. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule Of Changes In Carrying Amount Of Goodwill	The changes in the carrying amount of goodwill for the three months ended March 31, 2017 are as follows (in thousands): Residential Products Industrial and Infrastructure Products Renewable Energy & Conservation Total Balance at December 31, 2016 $ 181,285 $ 53,884 $ 68,863 $ 304,032 Acquired goodwill 16,710 — — 16,710 Adjustments to prior year acquisitions — — (832 ) (832 ) Foreign currency translation — 46 455 501 Balance at March 31, 2017 $ 197,995 $ 53,930 $ 68,486 $ 320,411
Schedule Of Acquired Intangible Assets	Acquired intangible assets consist of the following (in thousands): March 31, 2017 December 31, 2016 Gross Carrying Amount Accumulated Amortization Gross Carrying Amount Accumulated Amortization Estimated Life Indefinite-lived intangible assets: Trademarks $ 45,352 $ — $ 44,720 $ — Indefinite Finite-lived intangible assets: Trademarks 5,815 2,584 5,808 2,427 5 to 15 Years Unpatented technology 28,020 10,519 26,720 10,041 5 to 20 Years Customer relationships 80,596 35,096 78,569 33,585 5 to 17 Years Non-compete agreements 1,649 700 1,649 623 4 to 10 Years Backlog 900 900 900 900 0.5 to 2 Years 116,980 49,799 113,646 47,576 Total acquired intangible assets $ 162,332 $ 49,799 $ 158,366 $ 47,576
Schedule of Acquired Intangible Asset Amortization Expense	The following table summarizes the acquired intangible asset amortization expense for the three months ended March 31 (in thousands): Three Months Ended 2017 2016 Amortization expense $ 2,162 $ 2,181
Schedule Of Amortization Expense	Amortization expense related to acquired intangible assets for the remainder of fiscal 2017 and the next five years thereafter is estimated as follows (in thousands): 2017 $6,581 2018 $8,277 2019 $7,607 2020 $7,094 2021 $6,493 2022 $6,082

Long-Term Debt (Tables)

Long-Term Debt (Tables)	3 Months Ended
	Mar. 31, 2017
Long-term Debt, Unclassified [Abstract]
Schedule Of Long-Term Debt	Long-term debt consists of the following (in thousands): March 31, 2017 December 31, 2016 Senior Subordinated 6.25% Notes $ 210,000 $ 210,000 Other debt 2,800 2,800 Less unamortized debt issuance costs (2,967 ) (3,163 ) Total debt 209,833 209,637 Less current maturities 400 400 Total long-term debt $ 209,433 $ 209,237

Related Party Transactions Rela

Related Party Transactions Related Party Transactions (Tables)	3 Months Ended
	Mar. 31, 2017
Related Party Transactions [Abstract]
Lease Expense for Certain Real Estate Properties Leased	For the three months ended March 31, 2017 and 2016, the Company incurred the following lease expense for these properties. Three Months Ended 2017 2016 Cost of sales $ 262 $ 217

Accumulated Other Comprehensi32

Accumulated Other Comprehensive (Loss) Income (Tables)	3 Months Ended
	Mar. 31, 2017
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Schedule Of Components Of Accumulated Other Comprehensive Loss	The cumulative balance of each component of accumulated other comprehensive loss, net of tax, is as follows (in thousands): Foreign Currency Translation Adjustment Minimum Pension Unamortized Post Retirement Health Total Pre-Tax Amount Tax (Benefit) Expense Accumulated Other Balance at December 31, 2016 $ (5,848 ) $ 197 $ (3,150 ) $ (8,801 ) $ (1,080 ) $ (7,721 ) Minimum pension and post retirement health care plan adjustments — (5 ) 48 43 17 26 Foreign currency translation adjustment 679 — — 679 — 679 Balance at March 31, 2017 $ (5,169 ) $ 192 $ (3,102 ) $ (8,079 ) $ (1,063 ) $ (7,016 )

Equity-Based Compensation (Tabl

Equity-Based Compensation (Tables)	3 Months Ended
	Mar. 31, 2017
Share-based Compensation [Abstract]
Schedule Of Number Of Awards And Weighted Average Grant Date Fair Value	The following table provides the number of stock unit awards granted which will convert to shares upon vesting during the three months ended March 31, along with the weighted average grant date fair values: 2017 2016 Awards Number of Awards Weighted Average Grant Date Fair Value Number of Awards Weighted Average Grant Date Fair Value Performance stock units 98,482 $ 43.05 — $ — Restricted stock units 59,112 $ 43.05 94,489 $ 20.43 Options 20,000 $ 43.05 — $ —
Schedule of PSU Conversion	During the 2016 performance period, the participants earned an aggregate of 250,000 PSUs, representing 200% of the targeted 2016 award of 125,000 . This award will convert to cash payable in January 2019.
Schedule Of Compensation Expense Recognized From Change In Fair Value And Vesting Of Performance Stock Units	The following table summarizes the compensation expense recognized for the PSUs which will convert to cash for the three months ended March 31, (in thousands): Three Months Ended 2017 2016 Performance stock unit compensation expense $ 1,737 $ 825
Management Stock Purchase Plan	The following table provides the number of restricted stock units credited to participant accounts and the payments made with respect to restricted stock units issued under the MSPP during the three months ended March 31, 2017 2016 Restricted stock units credited 98,770 179,620 Share-based liabilities paid (in $1000s) $ 2,353 $ 1,984

Exit Activity Costs and Asset34

Exit Activity Costs and Asset Impairments (Tables)	3 Months Ended
	Mar. 31, 2017
Restructuring and Related Activities [Abstract]
Summary Of Exit Activity Costs And Asset Impairments	The following tables set forth the asset impairment charges and exit activity costs in conjunction with these efforts, incurred by segment during the three months ended March 31, related to the restructuring activities described above (in thousands): 2017 2016 Inventory write-downs &/or asset impairment recoveries Exit activity costs Total Inventory write-downs &/or asset impairment charges Exit activity costs Total Residential Products $ (21 ) $ 185 $ 164 $ 688 $ 330 $ 1,018 Industrial & Infrastructure Products (896 ) 2,656 1,760 222 458 680 Renewable Energy & Conservation — 1,050 1,050 — — — Corporate — 28 28 — — — Total exit activity costs & asset impairments $ (917 ) $ 3,919 $ 3,002 $ 910 $ 788 $ 1,698 The following table provides a summary of where the asset impairments and exit activity costs were recorded in the statement of operations for the three months ended March 31, (in thousands): Three Months Ended 2017 2016 Cost of sales $ 994 $ 1,118 Selling, general, and administrative expense 2,008 580 Net asset impairment and exit activity charges $ 3,002 $ 1,698
Reconciliation Of Liability For Exit Activity Costs Relating To Facility Consolidation Efforts	The following table reconciles the beginning and ending liability for exit activity costs relating to the Company’s facility consolidation efforts (in thousands): 2017 2016 Balance at January 1 $ 3,744 $ 603 Exit activity costs recognized 3,919 788 Cash payments (4,617 ) (430 ) Balance at March 31 $ 3,046 $ 961

Income Taxes (Tables)

Income Taxes (Tables)	3 Months Ended
	Mar. 31, 2017
Income Tax Disclosure [Abstract]
Summary Of Provision For Income Taxes For Continuing Operations	The following table summarizes the provision for income taxes for continuing operations (in thousands) for the three months ended March 31, and the applicable effective tax rates: Three Months Ended 2017 2016 Provision for income taxes $ 2,053 $ 5,076 Effective tax rate 33.9 % 36.0 %

Earnings per Share (Tables)

Earnings per Share (Tables)	3 Months Ended
	Mar. 31, 2017
Earnings Per Share [Abstract]
Schedule Of Computation Of Basic And Diluted Loss Per Share	the three months ended March 31, (in thousands): Three Months Ended 2017 2016 Numerator: Net income available to common shareholders $ 3,996 $ 9,029 Denominator for basic earnings per share: Weighted average shares outstanding 31,688 31,423 Denominator for diluted earnings per share: Weighted average shares outstanding 31,688 31,423 Common stock options and restricted stock 566 367 Weighted average shares and conversions $ 32,254 $ 31,790

Segment Information (Tables)

Segment Information (Tables)	3 Months Ended
	Mar. 31, 2017
Segment Reporting Information, Revenue for Reportable Segment [Abstract]
Reconciliation Of Sales To Earnings Before Income Taxes by Segment	The following table illustrates certain measurements used by management to assess performance of the segments described above for the three months ended March 31, (in thousands): Three Months Ended 2017 2016 Net sales: Residential Products $ 104,551 $ 100,147 Industrial and Infrastructure Products 50,718 80,017 Less: Intersegment sales (456 ) (367 ) 50,262 79,650 Renewable Energy and Conservation 51,792 57,874 Total consolidated net sales $ 206,605 $ 237,671 Income from operations: Residential Products $ 15,641 $ 12,231 Industrial and Infrastructure Products (37 ) 3,326 Renewable Energy and Conservation 3,340 8,307 Unallocated Corporate Expenses (9,265 ) (6,103 ) Total income from operations $ 9,679 $ 17,761

Supplemental Financial Inform38

Supplemental Financial Information (Tables)	3 Months Ended
	Mar. 31, 2017
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Schedule Of Consolidating Statements Of Operations	GIBRALTAR INDUSTRIES, INC. CONSOLIDATING STATEMENTS OF OPERATIONS THREE MONTHS ENDED MARCH 31, 2017 (in thousands) Gibraltar Industries, Inc. Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Total Net sales $ — $ 197,748 $ 11,242 $ (2,385 ) $ 206,605 Cost of sales — 150,507 8,982 (2,139 ) 157,350 Gross profit — 47,241 2,260 (246 ) 49,255 Selling, general, and administrative expense 43 36,506 3,027 — 39,576 (Loss) income from operations (43 ) 10,735 (767 ) (246 ) 9,679 Interest expense (income) 3,402 192 (18 ) — 3,576 Other expense (income) — 130 (76 ) — 54 (Loss) income before taxes (3,445 ) 10,413 (673 ) (246 ) 6,049 (Benefit of) provision for income taxes (1,344 ) 3,378 19 — 2,053 Equity in earnings from subsidiaries 6,343 (692 ) — (5,651 ) — Net income (loss) $ 4,242 $ 6,343 $ (692 ) $ (5,897 ) $ 3,996 GIBRALTAR INDUSTRIES, INC. CONSOLIDATING STATEMENTS OF OPERATIONS THREE MONTHS ENDED MARCH 31, 2016 (in thousands) Gibraltar Industries, Inc. Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Total Net sales $ — $ 215,213 $ 27,293 $ (4,835 ) $ 237,671 Cost of sales — 165,439 22,640 (4,558 ) 183,521 Gross profit — 49,774 4,653 (277 ) 54,150 Selling, general, and administrative expense 40 31,911 4,438 — 36,389 (Loss) income from operations (40 ) 17,863 215 (277 ) 17,761 Interest expense (income) 3,403 310 (22 ) — 3,691 Other (income) expense (46 ) 216 (205 ) — (35 ) (Loss) income before taxes (3,397 ) 17,337 442 (277 ) 14,105 (Benefit of) provision for income taxes (1,207 ) 6,092 191 — 5,076 Equity in earnings from subsidiaries 11,496 251 — (11,747 ) — Net income $ 9,306 $ 11,496 $ 251 $ (12,024 ) $ 9,029
Schedule Of Consolidating Statements Of Comprehensive Income	IBRALTAR INDUSTRIES, INC. CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME THREE MONTHS ENDED MARCH 31, 2017 (in thousands) Gibraltar Industries, Inc. Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Total Net income (loss) $ 4,242 $ 6,343 $ (692 ) $ (5,897 ) $ 3,996 Other comprehensive income (loss): Foreign currency translation adjustment — — 679 — 679 Adjustment to retirement benefit liability, net of tax — (3 ) — — (3 ) Adjustment to post employment health care benefit liability, net of tax — 29 — — 29 Other comprehensive income — 26 679 — 705 Total comprehensive income (loss) $ 4,242 $ 6,369 $ (13 ) $ (5,897 ) $ 4,701 GIBRALTAR INDUSTRIES, INC. CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME THREE MONTHS ENDED MARCH 31, 2016 (in thousands) Gibraltar Industries, Inc. Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Total Net income $ 9,306 $ 11,496 $ 251 $ (12,024 ) $ 9,029 Other comprehensive income (loss): Foreign currency translation adjustment — — 3,078 — 3,078 Adjustment to retirement benefit liability, net of tax — (1 ) — — (1 ) Adjustment to post employment health care benefit liability, net of tax — 38 — — 38 Other comprehensive income — 37 3,078 — 3,115 Total comprehensive income (loss) $ 9,306 $ 11,533 $ 3,329 $ (12,024 ) $ 12,144
Schedule Of Consolidating Balance Sheets	RALTAR INDUSTRIES, INC. CONSOLIDATING BALANCE SHEETS MARCH 31, 2017 (in thousands) Gibraltar Industries, Inc. Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Total Assets Current assets: Cash and cash equivalents $ — $ 138,763 $ 22,138 $ — $ 160,901 Accounts receivable, net — 121,615 6,867 — 128,482 Intercompany balances (11,508 ) 15,414 (3,906 ) — — Inventories — 82,288 4,655 — 86,943 Other current assets 1,424 1,262 3,271 — 5,957 Total current assets (10,084 ) 359,342 33,025 — 382,283 Property, plant, and equipment, net — 95,183 3,508 — 98,691 Goodwill — 298,179 22,232 — 320,411 Acquired intangibles — 103,223 9,310 — 112,533 Other assets — 4,548 — — 4,548 Investment in subsidiaries 688,635 58,481 — (747,116 ) — $ 678,551 $ 918,956 $ 68,075 $ (747,116 ) $ 918,466 Liabilities and Shareholders’ Equity Current liabilities: Accounts payable $ — $ 73,838 $ 3,056 $ — $ 76,894 Accrued expenses 4,088 60,307 1,858 — 66,253 Billings in excess of cost — 12,491 1,961 14,452 Current maturities of long-term debt — 400 — — 400 Total current liabilities 4,088 147,036 6,875 — 157,999 Long-term debt 208,158 1,275 — — 209,433 Deferred income taxes — 35,370 2,719 — 38,089 Other non-current liabilities — 46,640 — — 46,640 Shareholders’ equity 466,305 688,635 58,481 (747,116 ) 466,305 $ 678,551 $ 918,956 $ 68,075 $ (747,116 ) $ 918,466 GIBRALTAR INDUSTRIES, INC. CONSOLIDATING BALANCE SHEETS DECEMBER 31, 2016 (in thousands) Gibraltar Industries, Inc. Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Total Assets Current assets: Cash and cash equivalents $ — $ 143,826 $ 26,351 $ — $ 170,177 Accounts receivable, net — 117,526 6,546 — 124,072 Intercompany balances (615 ) 6,152 (5,537 ) — — Inventories — 85,483 4,129 — 89,612 Other current assets 13,783 (10,070 ) 3,623 — 7,336 Total current assets 13,168 342,917 35,112 — 391,197 Property, plant, and equipment, net — 104,642 3,662 — 108,304 Goodwill — 282,300 21,732 — 304,032 Acquired intangibles — 101,520 9,270 — 110,790 Other assets — 3,922 — — 3,922 Investment in subsidiaries 663,118 58,477 — (721,595 ) — $ 676,286 $ 893,778 $ 69,776 $ (721,595 ) $ 918,245 Liabilities and Shareholders’ Equity Current liabilities: Accounts payable $ — $ 66,363 $ 3,581 $ — $ 69,944 Accrued expenses 7,369 60,004 3,019 — 70,392 Billings in excess of cost — 9,301 2,051 — 11,352 Current maturities of long-term debt — 400 — — 400 Total current liabilities 7,369 136,068 8,651 — 152,088 Long-term debt 208,037 1,200 — — 209,237 Deferred income taxes — 35,354 2,648 — 38,002 Other non-current liabilities — 58,038 — — 58,038 Shareholders’ equity 460,880 663,118 58,477 (721,595 ) 460,880 $ 676,286 $ 893,778 $ 69,776 $ (721,595 ) $ 918,245
Schedule Of Condensed Consolidating Statements Of Cash Flows	GIBRALTAR INDUSTRIES, INC. CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS THREE MONTHS ENDED MARCH 31, 2017 (in thousands) Gibraltar Industries, Inc. Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Total Cash Flows from Operating Activities Net cash (used in) provided by operating activities $ (6,605 ) $ 12,141 $ (3,193 ) $ — $ 2,343 Cash Flows from Investing Activities Cash paid for acquisitions — (18,561 ) — — (18,561 ) Net proceeds from sale of property and equipment — 9,081 152 — 9,233 Purchases of property, plant, and equipment — (1,326 ) (127 ) — (1,453 ) Net cash (used in) provided by investing activities — (10,806 ) 25 — (10,781 ) Cash Flows from Financing Activities Purchase of treasury stock at market prices (922 ) — — — (922 ) Net proceeds from issuance of common stock 11 — — — 11 Intercompany financing 7,516 (6,398 ) (1,118 ) — — Net cash provided by (used in) financing activities 6,605 (6,398 ) (1,118 ) — (911 ) Effect of exchange rate changes on cash — — 73 — 73 Net decrease in cash and cash equivalents — (5,063 ) (4,213 ) — (9,276 ) Cash and cash equivalents at beginning of year — 143,826 26,351 — 170,177 Cash and cash equivalents at end of period $ — $ 138,763 $ 22,138 $ — $ 160,901 GIBRALTAR INDUSTRIES, INC. CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS THREE MONTHS ENDED MARCH 31, 2016 (in thousands) Gibraltar Industries, Inc. Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Total Cash Flows from Operating Activities Net cash (used in) provided by operating activities $ (6,371 ) $ 23,251 $ (1,339 ) $ — $ 15,541 Cash Flows from Investing Activities Cash paid for acquisitions — (2,314 ) — — (2,314 ) Net proceeds from sale of property and equipment — 57 — — 57 Purchases of property, plant, and equipment — (1,356 ) (145 ) — (1,501 ) Other, net — 1,118 — — 1,118 Net cash used in investing activities — (2,495 ) (145 ) — (2,640 ) Cash Flows from Financing Activities Payment of debt issuance costs — (54 ) — — (54 ) Purchase of treasury stock at market prices (414 ) — — — (414 ) Net proceeds from issuance of common stock 133 — — — 133 Intercompany financing 6,652 (7,144 ) 492 — — Net cash provided by (used in) financing activities 6,371 (7,198 ) 492 — (335 ) Effect of exchange rate changes on cash — — 1,203 — 1,203 Net increase in cash and cash equivalents — 13,558 211 — 13,769 Cash and cash equivalents at beginning of year — 39,597 29,261 — 68,858 Cash and cash equivalents at end of period $ — $ 53,155 $ 29,472 $ — $ 82,627

Accounts Receivable (Details)

Accounts Receivable (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Receivables [Abstract]
Trade accounts receivable	$ 87,669	$ 81,193
Contract receivables:
Amounts billed	35,551	41,569
Costs in excess of billings	10,699	6,582
Total contract receivables	46,250	48,151
Total accounts receivable	133,919	129,344
Less allowance for doubtful accounts	(5,437)	(5,272)
Accounts receivable	$ 128,482	$ 124,072

Inventories (Details)

Inventories (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Inventory Disclosure [Abstract]
Raw material	$ 40,521	$ 41,758
Work-in-process	12,644	12,268
Finished goods	33,778	35,586
Total inventories	$ 86,943	$ 89,612

Acquisitions (Narrative) (Detai

Acquisitions (Narrative) (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2017	Mar. 31, 2016	Feb. 22, 2017	Oct. 11, 2016
Business Acquisition [Line Items]
Goodwill	$ 320,411	$ 304,032	$ 320,411
Acquisition related costs			102	$ 31
Package Concierge
Business Acquisition [Line Items]
Aggregate consideration for acquisition	18,892
Goodwill					$ 16,710
Nexus Corporation
Business Acquisition [Line Items]
Aggregate consideration for acquisition		23,762
Goodwill						$ 11,451
Working capital adjustment payable	$ 168	$ 1,000	$ 168

Acquisitions (Allocation of Pur

Acquisitions (Allocation of Purchase Consideration to the Assets Acquired and Liabilities Assumed) (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Feb. 22, 2017	Dec. 31, 2016	Oct. 11, 2016
Business Acquisition [Line Items]
Goodwill	$ 320,411		$ 304,032
Package Concierge
Business Acquisition [Line Items]
Cash		$ 590
Working capital		(2,071)
Property, plant, and equipment		55
Acquired intangible assets		3,600
Other assets		8
Goodwill		16,710
Fair value of purchase consideration		$ 18,892
Nexus Corporation
Business Acquisition [Line Items]
Cash				$ 2,495
Working capital				(1,109)
Property, plant, and equipment				4,702
Acquired intangible assets				6,200
Other assets				23
Goodwill				11,451
Fair value of purchase consideration				$ 23,762

Acquisitions (Schedule of Acqui

Acquisitions (Schedule of Acquired Intangible Assets) (Details) - USD ($) $ in Thousands	Feb. 22, 2017	Oct. 11, 2016
Technology
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	10 years	15 years
Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	7 years	11 years
Backlog
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life		3 months
Package Concierge
Acquired Finite-Lived Intangible Assets [Line Items]
Fair Value, finite-lived intangible assets acquired	$ 3,600
Package Concierge | Technology
Acquired Finite-Lived Intangible Assets [Line Items]
Fair Value, finite-lived intangible assets acquired	1,300
Package Concierge | Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Fair Value, finite-lived intangible assets acquired	1,700
Package Concierge | Trademarks
Acquired Finite-Lived Intangible Assets [Line Items]
Fair Value, finite-lived intangible assets acquired	$ 600
Nexus Corporation
Acquired Finite-Lived Intangible Assets [Line Items]
Fair Value, finite-lived intangible assets acquired		$ 6,200
Nexus Corporation | Technology
Acquired Finite-Lived Intangible Assets [Line Items]
Fair Value, finite-lived intangible assets acquired		1,300
Nexus Corporation | Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Fair Value, finite-lived intangible assets acquired		800
Nexus Corporation | Backlog
Acquired Finite-Lived Intangible Assets [Line Items]
Fair Value, finite-lived intangible assets acquired		900
Nexus Corporation | Trademarks
Acquired Finite-Lived Intangible Assets [Line Items]
Fair Value, finite-lived intangible assets acquired		$ 3,200

Goodwill and Related Intangib44

Goodwill and Related Intangible Assets (Schedule of Changes in Carrying Amount of Goodwill) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Goodwill [Roll Forward]
Balance at	$ 304,032
Acquired goodwill	16,710
Adjustments to prior year acquisitions	(832)
Foreign currency translation	501
Balance at	320,411
Accumulated impairment losses	235,419	$ 234,490
Residential Products
Goodwill [Roll Forward]
Balance at	181,285
Acquired goodwill	16,710
Adjustments to prior year acquisitions	0
Foreign currency translation	0
Balance at	197,995
Industrial and Infrastructure Products
Goodwill [Roll Forward]
Balance at	53,884
Acquired goodwill	0
Adjustments to prior year acquisitions	0
Foreign currency translation	46
Balance at	53,930
Renewable Energy & Conservation
Goodwill [Roll Forward]
Balance at	68,863
Acquired goodwill	0
Adjustments to prior year acquisitions	(832)
Foreign currency translation	455
Balance at	$ 68,486

Goodwill and Related Intangib45

Goodwill and Related Intangible Assets (Schedule of Acquired Intangible Assets) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount, Finite-lived intangible assets	$ 116,980	$ 113,646
Total acquired intangible assets, Gross Carrying Amount	162,332	158,366
Accumulated Amortization, Finite-lived intangible assets	49,799	47,576
Total acquired intangible assets, Accumulated Amortization	49,799	47,576
Trademarks
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount, Finite-lived intangible assets	5,815	5,808
Accumulated Amortization, Finite-lived intangible assets	2,584	2,427
Unpatented technology
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount, Finite-lived intangible assets	28,020	26,720
Accumulated Amortization, Finite-lived intangible assets	10,519	10,041
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount, Finite-lived intangible assets	80,596	78,569
Accumulated Amortization, Finite-lived intangible assets	35,096	33,585
Non-compete agreements
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount, Finite-lived intangible assets	1,649	1,649
Accumulated Amortization, Finite-lived intangible assets	700	623
Backlog
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount, Finite-lived intangible assets	900	900
Accumulated Amortization, Finite-lived intangible assets	900	900
Trademarks
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount, Indefinite-lived intangible assets	45,352	44,720
Accumulated Amortization, Indefinite-lived intangible assets	$ 0	$ 0
Minimum | Trademarks
Finite-Lived Intangible Assets [Line Items]
Estimated Life	5 years
Minimum | Unpatented technology
Finite-Lived Intangible Assets [Line Items]
Estimated Life	5 years
Minimum | Customer relationships
Finite-Lived Intangible Assets [Line Items]
Estimated Life	5 years
Minimum | Non-compete agreements
Finite-Lived Intangible Assets [Line Items]
Estimated Life	4 years
Minimum | Backlog
Finite-Lived Intangible Assets [Line Items]
Estimated Life	6 months
Maximum | Trademarks
Finite-Lived Intangible Assets [Line Items]
Estimated Life	15 years
Maximum | Unpatented technology
Finite-Lived Intangible Assets [Line Items]
Estimated Life	20 years
Maximum | Customer relationships
Finite-Lived Intangible Assets [Line Items]
Estimated Life	17 years
Maximum | Non-compete agreements
Finite-Lived Intangible Assets [Line Items]
Estimated Life	10 years
Maximum | Backlog
Finite-Lived Intangible Assets [Line Items]
Estimated Life	2 years

Goodwill and Related Intangib46

Goodwill and Related Intangible Assets (Schedule of Amortization Expense) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization expense	$ 2,162	$ 2,181
2,016	6,581
2,017	8,277
2,018	7,607
2,019	7,094
2,020	6,493
2,021	$ 6,082

Long-Term Debt (Schedule of Lon

Long-Term Debt (Schedule of Long-Term Debt) (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2013
Debt Instrument [Line Items]
Less unamortized debt issuance costs	$ (2,967)	$ (3,163)
Total debt	(209,833)	(209,637)
Less current maturities	400	400
Total long-term debt	209,433	209,237
Senior Subordinated 6.25% Notes
Debt Instrument [Line Items]
Total debt	$ (210,000)	$ (210,000)
Senior Subordinated Notes, interest rate	6.25%	6.25%	6.25%
Other debt
Debt Instrument [Line Items]
Total debt	$ (2,800)	$ (2,800)

Long-Term Debt (Narrative) (Det

Long-Term Debt (Narrative) (Details) - USD ($)	Dec. 09, 2015	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2013	Jan. 31, 2013
Senior Subordinated 6.25% Notes
Debt Instrument [Line Items]
Debt instrument, issued value					$ 210,000,000
Senior Subordinated Notes, interest rate		6.25%	6.25%	6.25%
Revolving Credit Facility | Senior Credit Agreement
Debt Instrument [Line Items]
Revolving credit facility, availability amount		$ 286,919,000
Borrowings outstanding		0	$ 0
Standby Letters of Credit | Senior Credit Agreement
Debt Instrument [Line Items]
Letters of credit issued		13,081,000
Secured Debt | Senior Credit Agreement
Debt Instrument [Line Items]
Debt instrument, issued value		$ 300,000,000
Line of Credit | Senior Credit Agreement
Debt Instrument [Line Items]
Letters of credit issued	$ 500,000,000
Medium-term Notes | Senior Credit Agreement
Debt Instrument [Line Items]
Debt instrument, issued value	$ 200,000,000
Minimum | Line of Credit | Senior Credit Agreement
Debt Instrument [Line Items]
Line of Credit Facility, Commitment Fee Percentage	0.20%
Maximum | Line of Credit | Senior Credit Agreement
Debt Instrument [Line Items]
Line of Credit Facility, Commitment Fee Percentage	0.30%
LIBOR | Minimum | Line of Credit | Senior Credit Agreement
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	1.25%
LIBOR | Maximum | Line of Credit | Senior Credit Agreement
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	2.25%

Related Party Transactions (Det

Related Party Transactions (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2017USD ($)segment	Mar. 31, 2016USD ($)
Related Party Transaction [Line Items]
Lease expense | $	$ 262	$ 217
Officer
Related Party Transaction [Line Items]
Number of operating segments | segment	1

Accumulated Other Comprehensi50

Accumulated Other Comprehensive (Loss) Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at	$ (8,801)
Balance at	(8,079)
Balance at	(1,080)
Balance at	(1,063)
Balance at	(7,721)
Other comprehensive income (loss), net of tax	705	$ 3,115
Balance at	(7,016)
Accumulated Translation Adjustment
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at	(5,848)
Other comprehensive income adjustments	679
Balance at	(5,169)
Other comprehensive income (loss), net of tax	679
Accumulated Defined Benefit Plans Adjustment
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Other comprehensive income adjustments	43
Other comprehensive income (loss), tax	17
Other comprehensive income (loss), net of tax	26
Minimum Pension Liability Adjustment | Accumulated Defined Benefit Plans Adjustment
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at	197
Other comprehensive income adjustments	(5)
Balance at	192
Postretirement Health Coverage | Accumulated Defined Benefit Plans Adjustment
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at	(3,150)
Other comprehensive income adjustments	48
Balance at	$ (3,102)

Equity-Based Compensation (Sche

Equity-Based Compensation (Schedule of Number of Awards and Weighted Average Grant Date Fair Value) (Details) - $ / shares	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Awards (in shares)	20,000	0
Weighted Average Grant Date Fair Value (in USD per share)	$ 43.05	$ 0
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Awards (in shares)	59,112	94,489
Weighted Average Grant Date Fair Value (in USD per share)	$ 43.05	$ 20.43
Performance stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Awards (in shares)	98,482	0
Weighted Average Grant Date Fair Value (in USD per share)	$ 43.05	$ 0

Equity-Based Compensation (Equi

Equity-Based Compensation (Equity Based Awards - Settled in Stock) (Details) - Performance stock units - shares	1 Months Ended	3 Months Ended
	Feb. 28, 2017	Mar. 31, 2017	Mar. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Units awarded (in shares)		98,482	0
Performance period		1 year
2015 Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Units awarded that will convert to shares (in shares)	78,482
Units awarded (in shares)	20,000
Performance period	3 years

Equity-Based Compensation (Perf

Equity-Based Compensation (Performance Stock Units - Settled in Cash) (Details) - Performance stock units - shares	3 Months Ended	12 Months Ended
	Mar. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Typical vesting period, in years	3 years
Performance period	1 year
PSUs earned	250,000	125,000
Percentage of target performance stock units earned		200.00%	200.00%
Aggregate shares earned (in shares)			438,000
Targeted award (in shares)			219,000

Equity-Based Compensation (Sc54

Equity-Based Compensation (Schedule of Compensation Expense Recognized from Change in Fair Value and Vesting of Performance Stock Units) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Performance stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance stock unit compensation expense	$ 1,737	$ 825

Equity-Based Compensation (Mana

Equity-Based Compensation (Management Stock Purchase Plan) (Details) - Management Stock Purchase Plan - USD ($)	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based liabilities paid (in $1000s)	$ 2,353,000	$ 1,984,000
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock units credited	$ 98,770	$ 179,620

Fair Value Measurements (Detail

Fair Value Measurements (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2013
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair value of outstanding debt	$ 219,373	$ 219,898
Carrying value of outstanding debt	209,833	209,637
Senior Subordinated 6.25% Notes
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Carrying value of outstanding debt	$ 210,000	$ 210,000
Senior Subordinated Notes, interest rate	6.25%	6.25%	6.25%

Exit Activity Costs and Asset57

Exit Activity Costs and Asset Impairments (Narrative) (Details)	3 Months Ended
	Mar. 31, 2017facility
Restructuring and Related Activities [Abstract]
Number of facilities closed	3

Exit Activity Costs and Asset58

Exit Activity Costs and Asset Impairments (Summary of Exit Activity Costs and Asset Impairments by Segment) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Restructuring Cost and Reserve [Line Items]
Inventory write-downs &/or asset impairment recoveries	$ (917)	$ 910
Exit activity costs	3,919	788
Net asset impairment and exit activity charges (gains)	3,002	1,698
Residential Products
Restructuring Cost and Reserve [Line Items]
Inventory write-downs &/or asset impairment recoveries	(21)	688
Exit activity costs	185	330
Net asset impairment and exit activity charges (gains)	164	1,018
Industrial and Infrastructure Products
Restructuring Cost and Reserve [Line Items]
Inventory write-downs &/or asset impairment recoveries	(896)	222
Exit activity costs	2,656	458
Net asset impairment and exit activity charges (gains)	1,760	680
Renewable Energy & Conservation
Restructuring Cost and Reserve [Line Items]
Inventory write-downs &/or asset impairment recoveries	0	0
Exit activity costs	1,050	0
Net asset impairment and exit activity charges (gains)	1,050	0
Corporate
Restructuring Cost and Reserve [Line Items]
Inventory write-downs &/or asset impairment recoveries	0	0
Exit activity costs	28	0
Net asset impairment and exit activity charges (gains)	$ 28	$ 0

Exit Activity Costs and Asset59

Exit Activity Costs and Asset Impairments (Summary of Exit Activity Costs and Asset Impairments) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Restructuring Cost and Reserve [Line Items]
Net asset impairment and exit activity charges (gains)	$ 3,002	$ 1,698
Cost of sales
Restructuring Cost and Reserve [Line Items]
Net asset impairment and exit activity charges (gains)	994	1,118
Selling, general, and administrative expense
Restructuring Cost and Reserve [Line Items]
Net asset impairment and exit activity charges (gains)	$ 2,008	$ 580

Exit Activity Costs and Asset60

Exit Activity Costs and Asset Impairments (Reconciles of Liability for Exit Activity Costs Relating to Facility Consolidation Efforts) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Restructuring Reserve [Roll Forward]
Beginning balance	$ 3,744	$ 603
Exit activity costs recognized	3,919	788
Cash payments	(4,617)	(430)
Ending balance	$ 3,046	$ 961

Income Taxes (Provision For Inc

Income Taxes (Provision For Income Taxes For Continuing Operations) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Income Tax Disclosure [Abstract]
Provision for income taxes	$ 2,053	$ 5,076
Effective tax rate	33.90%	36.00%

Income Taxes (Narrative) (Detai

Income Taxes (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Income Tax Disclosure [Abstract]
Statutory tax rate, percentage	35.00%	35.00%
Pre-tax loss		$ (0.9)

Earnings per Share (Details)

Earnings per Share (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Net income	$ 3,996	$ 9,029
Weighted average shares outstanding	31,688,000	31,423,000
Common stock options and restricted stock (in shares)	566,000	367,000
Diluted	32,254,000	31,790,000
Common shares
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from earnings per share calculation (in shares)	526,000	723,000

Segment Information (Details)

Segment Information (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2017USD ($)segment	Mar. 31, 2016USD ($)
Segment Reporting, Other Significant Reconciling Item [Line Items]
Number of reportable segments | segment	3
Net sales:	$ 206,605	$ 237,671
Income from operations:	49,255	54,150
Unallocated Corporate Expenses	(9,265)	(6,103)
Total income from operations	9,679	17,761
Residential Products
Segment Reporting, Other Significant Reconciling Item [Line Items]
Net sales:	104,551	100,147
Income from operations:	15,641	12,231
Industrial and Infrastructure Products
Segment Reporting, Other Significant Reconciling Item [Line Items]
Net sales:	50,718	80,017
Income from operations:	(37)	3,326
Renewable Energy & Conservation
Segment Reporting, Other Significant Reconciling Item [Line Items]
Net sales:	51,792	57,874
Income from operations:	3,340	8,307
Intersegment Elimination
Segment Reporting, Other Significant Reconciling Item [Line Items]
Net sales:	(456)	(367)
Intersegment Elimination | Industrial and Infrastructure Products
Segment Reporting, Other Significant Reconciling Item [Line Items]
Net sales:	$ 50,262	$ 79,650

Supplemental Financial Inform65

Supplemental Financial Information (Narrative) (Details)	3 Months Ended
	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2013
Schedule Of Supplemental Financial Information [Line Items]
Ownership percentage	100.00%
Senior Subordinated 6.25% Notes
Schedule Of Supplemental Financial Information [Line Items]
Senior Subordinated Notes, interest rate	6.25%	6.25%	6.25%

Supplemental Financial Inform66

Supplemental Financial Information (Schedule of Consolidating Statements of Operations) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Schedule Of Supplemental Financial Information [Line Items]
Net Sales	$ 206,605	$ 237,671
Cost of sales	157,350	183,521
Gross profit	49,255	54,150
Selling, general, and administrative expense	39,576	36,389
Income from operations	9,679	17,761
Interest expense	3,576	3,691
Other expense (income)	54	(35)
Income before taxes	6,049	14,105
Provision for income taxes	2,053	5,076
Equity in earnings from subsidiaries	0	0
Net income	3,996	9,029
Reportable Legal Entities | Gibraltar Industries, Inc.
Schedule Of Supplemental Financial Information [Line Items]
Net Sales	0	0
Cost of sales	0	0
Gross profit	0	0
Selling, general, and administrative expense	43	40
Income from operations	(43)	(40)
Interest expense	3,402	3,403
Other expense (income)	0	(46)
Income before taxes	(3,445)	(3,397)
Provision for income taxes	(1,344)	(1,207)
Equity in earnings from subsidiaries	6,343	11,496
Net income	4,242	9,306
Reportable Legal Entities | Guarantor Subsidiaries
Schedule Of Supplemental Financial Information [Line Items]
Net Sales	197,748	215,213
Cost of sales	150,507	165,439
Gross profit	47,241	49,774
Selling, general, and administrative expense	36,506	31,911
Income from operations	10,735	17,863
Interest expense	192	310
Other expense (income)	130	216
Income before taxes	10,413	17,337
Provision for income taxes	3,378	6,092
Equity in earnings from subsidiaries	(692)	251
Net income	6,343	11,496
Reportable Legal Entities | Non-Guarantor Subsidiaries
Schedule Of Supplemental Financial Information [Line Items]
Net Sales	11,242	27,293
Cost of sales	8,982	22,640
Gross profit	2,260	4,653
Selling, general, and administrative expense	3,027	4,438
Income from operations	(767)	215
Interest expense	(18)	(22)
Other expense (income)	(76)	(205)
Income before taxes	(673)	442
Provision for income taxes	19	191
Equity in earnings from subsidiaries	0	0
Net income	(692)	251
Eliminations
Schedule Of Supplemental Financial Information [Line Items]
Net Sales	(2,385)	(4,835)
Cost of sales	(2,139)	(4,558)
Gross profit	(246)	(277)
Selling, general, and administrative expense	0	0
Income from operations	(246)	(277)
Interest expense	0	0
Other expense (income)	0	0
Income before taxes	(246)	(277)
Provision for income taxes	0	0
Equity in earnings from subsidiaries	(5,651)	(11,747)
Net income	$ (5,897)	$ (12,024)

Supplemental Financial Inform67

Supplemental Financial Information (Schedule of Consolidating Statements of Comprehensive Income) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Schedule Of Supplemental Financial Information [Line Items]
Net income	$ 3,996	$ 9,029
Other comprehensive income (loss):
Foreign currency translation adjustment	679	3,078
Adjustment to retirement benefit liability, net of tax	(3)	(1)
Adjustment to post employment health care benefit liability, net of tax	29	38
Other comprehensive income	705	3,115
Total comprehensive income	4,701	12,144
Gibraltar Industries, Inc.
Other comprehensive income (loss):
Foreign currency translation adjustment	0
Adjustment to retirement benefit liability, net of tax	0
Adjustment to post employment health care benefit liability, net of tax	0
Other comprehensive income	0
Total comprehensive income	4,242
Guarantor Subsidiaries
Other comprehensive income (loss):
Foreign currency translation adjustment	0
Adjustment to retirement benefit liability, net of tax	(3)
Adjustment to post employment health care benefit liability, net of tax	29
Other comprehensive income	26
Total comprehensive income	6,369
Non-Guarantor Subsidiaries
Other comprehensive income (loss):
Foreign currency translation adjustment	679
Adjustment to retirement benefit liability, net of tax	0
Adjustment to post employment health care benefit liability, net of tax	0
Other comprehensive income	679
Total comprehensive income	(13)
Reportable Legal Entities | Gibraltar Industries, Inc.
Schedule Of Supplemental Financial Information [Line Items]
Net income	4,242	9,306
Other comprehensive income (loss):
Foreign currency translation adjustment		0
Adjustment to retirement benefit liability, net of tax		0
Adjustment to post employment health care benefit liability, net of tax		0
Other comprehensive income		0
Total comprehensive income		9,306
Reportable Legal Entities | Guarantor Subsidiaries
Schedule Of Supplemental Financial Information [Line Items]
Net income	6,343	11,496
Other comprehensive income (loss):
Foreign currency translation adjustment		0
Adjustment to retirement benefit liability, net of tax		(1)
Adjustment to post employment health care benefit liability, net of tax		38
Other comprehensive income		37
Total comprehensive income		11,533
Reportable Legal Entities | Non-Guarantor Subsidiaries
Schedule Of Supplemental Financial Information [Line Items]
Net income	(692)	251
Other comprehensive income (loss):
Foreign currency translation adjustment		3,078
Adjustment to retirement benefit liability, net of tax		0
Adjustment to post employment health care benefit liability, net of tax		0
Other comprehensive income		3,078
Total comprehensive income		3,329
Eliminations
Schedule Of Supplemental Financial Information [Line Items]
Net income	(5,897)	(12,024)
Other comprehensive income (loss):
Foreign currency translation adjustment	0	0
Adjustment to retirement benefit liability, net of tax	0	0
Adjustment to post employment health care benefit liability, net of tax	0	0
Other comprehensive income	0	0
Total comprehensive income	$ (5,897)	$ (12,024)

Supplemental Financial Inform68

Supplemental Financial Information (Schedule of Consolidating Balance Sheets) (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2016	Dec. 31, 2015	Mar. 31, 2014	Dec. 31, 2013
Schedule Of Supplemental Financial Information [Line Items]
Cash and cash equivalents	$ 160,901	$ 170,177	$ 82,627	$ 68,858	$ 82,627	$ 68,858
Accounts receivable, net	128,482	124,072
Intercompany balances	0	0
Inventories	86,943	89,612
Other current assets	5,957	7,336
Total current assets	382,283	391,197
Property, plant, and equipment, net	98,691	108,304
Goodwill	320,411	304,032
Acquired intangibles	112,533	110,790
Other assets	4,548	3,922
Investment in subsidiaries	0	0
Total assets	918,466	918,245
Accounts payable	76,894	69,944
Accrued expenses	66,253	70,392
Billings in excess of cost	14,452	11,352
Current maturities of long-term debt	400	400
Total current liabilities	157,999	152,088
Long-term debt	209,433	209,237
Deferred income taxes	38,089	38,002
Other non-current liabilities	46,640	58,038
Total shareholders’ equity	466,305	460,880
Total liabilities and shareholders' equity	918,466	918,245
Reportable Legal Entities | Gibraltar Industries, Inc.
Schedule Of Supplemental Financial Information [Line Items]
Cash and cash equivalents	0	0	0	0
Accounts receivable, net	0	0
Intercompany balances	(11,508)	(615)
Inventories	0	0
Other current assets	1,424	13,783
Total current assets	(10,084)	13,168
Property, plant, and equipment, net	0	0
Goodwill	0	0
Acquired intangibles	0	0
Other assets	0	0
Investment in subsidiaries	688,635	663,118
Total assets	678,551	676,286
Accounts payable	0	0
Accrued expenses	4,088	7,369
Billings in excess of cost	0	0
Current maturities of long-term debt	0	0
Total current liabilities	4,088	7,369
Long-term debt	208,158	208,037
Deferred income taxes	0	0
Other non-current liabilities	0	0
Total shareholders’ equity	466,305	460,880
Total liabilities and shareholders' equity	678,551	676,286
Reportable Legal Entities | Guarantor Subsidiaries
Schedule Of Supplemental Financial Information [Line Items]
Cash and cash equivalents	138,763	143,826	53,155	39,597
Accounts receivable, net	121,615	117,526
Intercompany balances	15,414	6,152
Inventories	82,288	85,483
Other current assets	1,262	(10,070)
Total current assets	359,342	342,917
Property, plant, and equipment, net	95,183	104,642
Goodwill	298,179	282,300
Acquired intangibles	103,223	101,520
Other assets	4,548	3,922
Investment in subsidiaries	58,481	58,477
Total assets	918,956	893,778
Accounts payable	73,838	66,363
Accrued expenses	60,307	60,004
Billings in excess of cost	12,491	9,301
Current maturities of long-term debt	400	400
Total current liabilities	147,036	136,068
Long-term debt	1,275	1,200
Deferred income taxes	35,370	35,354
Other non-current liabilities	46,640	58,038
Total shareholders’ equity	688,635	663,118
Total liabilities and shareholders' equity	918,956	893,778
Reportable Legal Entities | Non-Guarantor Subsidiaries
Schedule Of Supplemental Financial Information [Line Items]
Cash and cash equivalents	22,138	26,351	29,472	29,261
Accounts receivable, net	6,867	6,546
Intercompany balances	(3,906)	(5,537)
Inventories	4,655	4,129
Other current assets	3,271	3,623
Total current assets	33,025	35,112
Property, plant, and equipment, net	3,508	3,662
Goodwill	22,232	21,732
Acquired intangibles	9,310	9,270
Other assets	0	0
Investment in subsidiaries	0	0
Total assets	68,075	69,776
Accounts payable	3,056	3,581
Accrued expenses	1,858	3,019
Billings in excess of cost	1,961	2,051
Current maturities of long-term debt	0	0
Total current liabilities	6,875	8,651
Long-term debt	0	0
Deferred income taxes	2,719	2,648
Other non-current liabilities	0	0
Total shareholders’ equity	58,481	58,477
Total liabilities and shareholders' equity	68,075	69,776
Eliminations
Schedule Of Supplemental Financial Information [Line Items]
Cash and cash equivalents	0	0	$ 0	$ 0
Accounts receivable, net	0	0
Intercompany balances	0	0
Inventories	0	0
Other current assets	0	0
Total current assets	0	0
Property, plant, and equipment, net	0	0
Goodwill	0	0
Acquired intangibles	0	0
Other assets	0	0
Investment in subsidiaries	(747,116)	(721,595)
Total assets	(747,116)	(721,595)
Accounts payable	0	0
Accrued expenses	0	0
Billings in excess of cost		0
Current maturities of long-term debt	0	0
Total current liabilities	0	0
Long-term debt	0	0
Deferred income taxes	0	0
Other non-current liabilities	0	0
Total shareholders’ equity	(747,116)	(721,595)
Total liabilities and shareholders' equity	$ (747,116)	$ (721,595)

Supplemental Financial Inform69

Supplemental Financial Information (Schedule of Condensed Consolidating Statements of Cash Flows) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Schedule Of Supplemental Financial Information [Line Items]
Net cash provided by (used in) operating activities	$ 2,343	$ 15,541
Cash Flows from Investing Activities
Cash paid for acquisitions, net of cash acquired	(18,561)	(2,314)
Net proceeds from sale of property and equipment	9,233	57
Purchases of property, plant, and equipment	(1,453)	(1,501)
Other, net	0	1,118
Net cash used in investing activities	(10,781)	(2,640)
Cash Flows from Financing Activities
Payment of debt issuance costs		54
Purchase of treasury stock at market prices	(922)	(414)
Net proceeds from issuance of common stock	11	133
Payment of debt issuance costs	0	(54)
Inter Company Financing	0	0
Net cash used in financing activities	(911)	(335)
Effect of exchange rate changes on cash	73	1,203
Net (decrease) increase in cash and cash equivalents	(9,276)	13,769
Cash and cash equivalents at beginning of year	170,177	68,858
Cash and cash equivalents at end of period	160,901	82,627
Guarantor Subsidiaries
Cash Flows from Financing Activities
Purchase of treasury stock at market prices		0
Non-Guarantor Subsidiaries
Cash Flows from Financing Activities
Purchase of treasury stock at market prices		0
Reportable Legal Entities | Gibraltar Industries, Inc.
Schedule Of Supplemental Financial Information [Line Items]
Net cash provided by (used in) operating activities	(6,605)	(6,371)
Cash Flows from Investing Activities
Cash paid for acquisitions, net of cash acquired	0	0
Net proceeds from sale of property and equipment	0	0
Purchases of property, plant, and equipment	0	0
Other, net		0
Net cash used in investing activities	0	0
Cash Flows from Financing Activities
Payment of debt issuance costs		0
Purchase of treasury stock at market prices	(922)	(414)
Net proceeds from issuance of common stock	11	133
Inter Company Financing	7,516	6,652
Net cash used in financing activities	6,605	6,371
Effect of exchange rate changes on cash	0	0
Net (decrease) increase in cash and cash equivalents	0	0
Cash and cash equivalents at beginning of year	0	0
Cash and cash equivalents at end of period	0	0
Reportable Legal Entities | Guarantor Subsidiaries
Schedule Of Supplemental Financial Information [Line Items]
Net cash provided by (used in) operating activities	12,141	23,251
Cash Flows from Investing Activities
Cash paid for acquisitions, net of cash acquired	(18,561)	(2,314)
Net proceeds from sale of property and equipment	9,081	57
Purchases of property, plant, and equipment	(1,326)	(1,356)
Other, net		1,118
Net cash used in investing activities	(10,806)	(2,495)
Cash Flows from Financing Activities
Payment of debt issuance costs		54
Purchase of treasury stock at market prices	0
Net proceeds from issuance of common stock	0	0
Inter Company Financing	(6,398)	(7,144)
Net cash used in financing activities	(6,398)	(7,198)
Effect of exchange rate changes on cash	0	0
Net (decrease) increase in cash and cash equivalents	(5,063)	13,558
Cash and cash equivalents at beginning of year	143,826	39,597
Cash and cash equivalents at end of period	138,763	53,155
Reportable Legal Entities | Non-Guarantor Subsidiaries
Schedule Of Supplemental Financial Information [Line Items]
Net cash provided by (used in) operating activities	(3,193)	(1,339)
Cash Flows from Investing Activities
Cash paid for acquisitions, net of cash acquired	0	0
Net proceeds from sale of property and equipment	152	0
Purchases of property, plant, and equipment	(127)	(145)
Other, net		0
Net cash used in investing activities	25	(145)
Cash Flows from Financing Activities
Payment of debt issuance costs		0
Purchase of treasury stock at market prices	0
Net proceeds from issuance of common stock	0	0
Inter Company Financing	(1,118)	492
Net cash used in financing activities	(1,118)	492
Effect of exchange rate changes on cash	73	1,203
Net (decrease) increase in cash and cash equivalents	(4,213)	211
Cash and cash equivalents at beginning of year	26,351	29,261
Cash and cash equivalents at end of period	22,138	29,472
Eliminations
Schedule Of Supplemental Financial Information [Line Items]
Net cash provided by (used in) operating activities	0	0
Cash Flows from Investing Activities
Cash paid for acquisitions, net of cash acquired	0	0
Net proceeds from sale of property and equipment	0	0
Purchases of property, plant, and equipment	0	0
Other, net		0
Net cash used in investing activities	0	0
Cash Flows from Financing Activities
Payment of debt issuance costs		0
Purchase of treasury stock at market prices	0	0
Net proceeds from issuance of common stock	0	0
Inter Company Financing	0	0
Net cash used in financing activities	0	0
Effect of exchange rate changes on cash	0	0
Net (decrease) increase in cash and cash equivalents	0	0
Cash and cash equivalents at beginning of year	0	0
Cash and cash equivalents at end of period	$ 0	$ 0