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Summary of Significant Accounting Policies | 12 Months Ended
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Dec. 31, 2019
Accounting Policies [Abstract] |
Summary Of Significant Accounting Policies | SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Principles of consolidation The consolidated financial statements include the accounts of Gibraltar Industries, Inc. and subsidiaries (the "Company"). All intercompany accounts and transactions have been eliminated in consolidation. Use of estimates The preparation of the consolidated financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Actual results could differ from those estimates. Revenue recognition Revenue is recognized when, or as, the Company transfers control of promised products or service to a customer in an amount that reflects the consideration the Company expects to be entitled in exchange for transferring those products or service. Performance obligations satisfied at a point in time and significant judgments The majority of the Company's revenue from contracts with customers is recognized when the Company transfers control of the promised product at a point in time, which is determined when the customer has legal title and the significant risks and rewards of ownership of the asset, and the Company has a present right to payment for the product. These contracts with customers include promised products, which are generally capable of being distinct and accounted for as separate performance obligations. Accordingly, the Company allocates the transaction price, which is generally the quoted price per terms of the contract and the consideration the Company expects to receive, to each performance obligation in an amount based on an observable price of the products as the Company frequently sells these products separately in similar circumstances and to similar customers. These products are generally sold with rights of return and these contracts may provide other credits or incentives, which are accounted for as variable consideration. Variable consideration is estimated at the most likely amount to predict the consideration to which the Company will be entitled, and only to the extent it is probable that a subsequent change in estimate will not result in a significant revenue reversal when estimating the amount of revenue to recognize. Sales returns, allowances, and customer incentives, including rebates, are treated as reductions to the sales transaction price and based largely on an assessment of all information (i.e., historical, current and forecasted) that is reasonably available to the Company, and estimated at contract inception and updated at the end of each reporting period as additional information becomes available. Performance obligations satisfied over time and significant judgments For a contract to construct an asset that the customer controls as it is being created or enhanced, or a promise to provide a product that has no alternative use to the Company and the Company has enforceable rights to payment, the Company recognizes revenue over time. For the contracts to construct a certain asset, the Company determines that the customer controls the asset while it is being constructed. For the contracts for products that have no alternative use and for which the Company has an enforceable right to payment, the Company identifies these products as products that are not a standard inventory item or the Company cannot readily direct the product to another customer for use without incurring a significant economic loss, or significant costs to rework the product. When the promised products and services are to construct a certain asset that the customer controls, the entire contract is accounted for as one performance obligation. The Company determines the transaction price for each contract based on the consideration the Company expects to receive for the promised products and services under the entire contract, which is generally the stated contract price based on an expected cost plus a margin. When the promised products do not have an alternative use to the Company, and the Company has enforceable rights to payment, the transaction price is determined for each contract based on the consideration the Company expects to receive for the promised products under the contract and is generally the stated contract price based on an expected cost plus a margin for each performance obligation. These promised products are generally capable of being distinct and accounted for as separate performance obligations. For the above contracts with customers with respect to which the Company satisfies a performance obligation over time, the Company recognizes revenue based on the extent of progress towards completion of the performance obligation. The cost-to-cost measure of progress best depicts the transfer of control to the customer which occurs as the Company incurs costs on the contract as the incurred costs are proportionate to the Company's progress in satisfying the performance obligation. Under the cost-to-cost measure of progress, the extent of progress toward completion is measured based on the ratio of costs incurred to date to the total estimated costs at completion of the performance obligation. Revenues are recognized proportionally as costs are incurred. Costs to fulfill a contract include all direct costs related to contract performance. Selling and administrative expenses are charged to operations as incurred. Provision for loss on an uncompleted performance obligation is recognized in the period in which such loss is determined. The Company regularly reviews the progress and performance of the performance obligation recognized over time under the cost-to-cost method. Any adjustments to net sales, cost of sales, and the related impact to operating income are recognized as necessary in the period they become known. Changes in estimates of net sales, cost of sales, and the related impact to operating income are recognized on a cumulative catch-up basis, which recognizes in the current period the cumulative effect of the changes on current or prior periods based on a performance obligation's cost-to-cost measure of progress. The Company also recognizes revenues from services contracts over time. For these contracts, the transaction price is determined for each contract based on the consideration the Company expects to receive for the promised service under the contract, which generally is the stated contract price. In order to estimate the standalone selling price of the performance obligation, the Company evaluates the market in which the promised service is sold and estimates the price that customers in the market would be willing to pay. Further, the Company recognizes revenue over time during the term of the agreement as the customer is simultaneously receiving and consuming the benefits provided throughout the Company's performance. Therefore due to control transferring over time, the Company recognizes revenue on a straight-line basis throughout the contract period. Contract assets and contract liabilities Costs in excess of billings includes unbilled amounts resulting from revenues under contracts with customers that are satisfied over time and when the cost-to-cost measurement method of revenue recognition is utilized and revenue recognized exceeds the amount billed to the customer, and right to payment is not just subject to the passage of time. Amounts do not exceed their net realizable value. Costs in excess of billings are classified as current assets and are reported net of contract billings on a contract-by-contract basis at the end of each reporting period. Billings in excess of cost includes billings in excess of revenue recognized and deferred revenue, which includes advanced payments, up-front payments, and progress billing payments. Billings in excess of cost are reported net of contract cost on a contract-by-contract basis at the end of each reporting period and are classified as current liabilities. To determine the revenue recognized in the period from the beginning balance of billings in excess of cost, the contract liability as of the beginning of the period is recognized as revenue on a contract by contract basis when the Company incurs costs to satisfy the performance obligation related to the individual contract. Once the beginning contract liability balance for an individual contract has been fully recognized as revenue, any additional payments received in the period are recognized as revenue once the related costs have been incurred. Unearned revenue relates to payments received in advance of performance under the contract and is recognized when the Company performs under the contract. Unearned revenue is presented within accrued expenses in the Company's consolidated balance sheets. Costs to obtain a contract with a customer The Company recognizes an asset for the incremental costs of obtaining a contract with a customer if the Company expects the benefit of those costs to be longer than one year. If the amortization period of the asset is one year or less, the Company recognizes the incremental costs of obtaining a contract as an expense when incurred. These incremental costs include, but are not limited to, sales commissions incurred to obtain a contract with a customer. Cash and cash equivalents All highly liquid investments with a maturity of three months or less are considered cash equivalents. Accounts receivable and allowance for doubtful accounts Accounts receivable are composed of trade and contract receivables recorded at either the invoiced amount or costs in excess of billings, are expected to be collected within one year, and do not bear interest. The allowance for doubtful accounts is the Company’s best estimate of the probable amount of uncollectible accounts in the Company’s existing accounts receivable. The Company determines the allowance based on a number of factors, including historical experience, credit worthiness of customers, and current market and economic conditions. The Company reviews the allowance for doubtful accounts on a regular basis. Account balances are charged against the allowance after all means of collection have been exhausted and the potential for recovery is considered remote. The following table summarizes activity recorded within the allowance for doubtful accounts balances for the years ended December 31 (in thousands):
| 2019 |  | 2018 |  | 2017
Beginning balance | $ | 6,960 |  |  | $ | 6,434 |  |  | $ | 5,272 |
Bad debt expense | 2,862 |  |  | 1,150 |  |  | 1,253 |
Accounts written off and other adjustments | (3,492 | ) |  | (624 | ) |  | (91 | )
Ending balance | $ | 6,330 |  |  | $ | 6,960 |  |  | $ | 6,434 |
Concentrations of credit risk in accounts receivable are limited to those from significant customers that are believed to be financially sound. As of December 31, 2019 and 2018, the Company's most significant customer is a home improvement retailer. The home improvement retailer purchases from the Residential Products and the Renewable Energy and Conservation segments. Accounts receivable as a percentage of consolidated accounts receivable from the home improvement retailer was 13% and 14% as of December 31, 2019 and 2018, respectively. Net sales as a percentage of consolidated net sales to the home improvement retailer were 12% in each of the years ended December 31, 2019, 2018 and 2017, with the majority of those sales within the Company's Residential Products segment. Inventories Inventories are valued at the lower of cost, determined using the first-in, first-out method, or net realizable value. Shipping and handling costs are recognized as a component of cost of sales. Property, plant, and equipment Property, plant, and equipment are stated at cost and depreciated over their estimated useful lives using the straight-line method. Interest is capitalized in connection with construction of qualified assets. Expenditures that exceed an established dollar threshold and that extend the useful lives of assets are capitalized, while repair and maintenance costs are expensed as incurred. The estimated useful lives of land improvements, buildings, and building improvements are 15 to 40 years, while the estimated useful lives for machinery and equipment are 3 to 20 years. The table below sets forth the depreciation expense recognized during the years ended December 31 (in thousands):
| 2019 |  | 2018 |  | 2017
Depreciation expense | $ | 12,678 |  |  | $ | 12,152 |  |  | $ | 12,929 |
Acquisition related assets and liabilities Accounting for the acquisition of a business as a purchase transaction requires an allocation of the purchase price to the assets acquired and the liabilities assumed in the transaction at their respective estimated fair values. The most complex estimations of individual fair values are those involving long-lived assets, such as property, plant, and equipment and intangible assets. The Company uses all available information to make these fair value determinations and engages independent valuation specialists to assist in the fair value determination of the acquired long-lived assets. Goodwill and other intangible assets The Company tests goodwill for impairment at the reporting unit level on an annual basis at October 31, or more frequently if an event occurs, or circumstances change, that indicate that the fair value of a reporting unit could be below its carrying value. The reporting units are at the component level, or one level below the operating segment level. Goodwill is assigned to each reporting unit as of the date the reporting unit is acquired and based upon the expected synergies of the acquisition. The Company may elect to perform a qualitative assessment that considers economic, industry and company-specific factors for some or all of our selected reporting units. If, after completing the assessment, it is determined that it is more likely than not that the fair value of a reporting unit is less than its carrying value, the Company proceeds to a quantitative test. The Company may also elect to perform a quantitative test instead of a qualitative test for any or all of the Company's reporting units. The quantitative impairment test consists of comparing the fair value of a reporting unit, determined using two valuation techniques, to its carrying value. If the carrying value of the reporting unit exceeds its fair value, goodwill is considered impaired, and a loss measured by the excess of the carrying value of the reporting unit over the fair value of the reporting unit must be recorded. The Company also tests its indefinite-lived intangible assets for impairment on an annual basis as of October 31, or more frequently if an event occurs, or circumstances change, that indicate that the fair value of an indefinite-lived intangible asset could be below its carrying value. The impairment test consists of comparing the fair value of the indefinite-lived intangible asset, determined using discounted cash flows on a relief-from-royalty basis, with its carrying amount. An impairment loss would be recognized for the carrying amount in excess of its fair value. Acquired identifiable intangible assets are recorded at cost. Identifiable intangible assets with finite useful lives are amortized over their estimated useful lives. Impairment of long-lived assets Long-lived assets, including acquired identifiable intangible assets with finite useful lives, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of those assets may not be recoverable. In specific situations, when the Company has selected individual assets to be sold or scrapped, the Company obtains market value data for those specific assets and measures and records the impairment loss based on such data. Otherwise, the Company uses undiscounted cash flows to determine whether impairment exists and measures any impairment loss by approximating fair value using acceptable valuation techniques, including discounted cash flow models and third-party appraisals. While the Company did not recognize any impairment charges related to intangible assets and other long-lived assets during the year ended December 31, 2019, impairment charges related to intangible assets and other long-lived assets were recognized during the years ended December 31, 2018 and 2017. Several of these impairment charges related to exit activities during the years ended December 31, 2018 and 2017, as described in Note 14 of the consolidated financial statements. Leases The Company determines if an agreement is, or contains, a lease at the inception of the agreement. Effective January 1, 2019, upon the adoption of ASC 842 - Leases, at lease commencement, the Company recognizes a right-of-use asset and a lease liability for leases with terms greater than twelve months. The initial lease liability is recognized at the present value of remaining lease payments over the lease term. Leases with an initial term of twelve months or less are not recorded on the Company's consolidated balance sheet. The Company recognizes lease expense for operating leases on a straight-line basis over the lease term. The Company combines lease and non-lease components, such as common area maintenance costs, in calculating the related asset and lease liabilities for all underlying asset groups. Operating lease cost is included in income from operations and includes short-term leases and variable lease costs which are immaterial. Deferred charges Deferred charges associated with initial costs incurred to enter into new debt arrangements are included in other assets and are amortized as a part of interest expense over the terms of the associated debt agreements. Advertising The Company expenses advertising costs as incurred. For the years ended December 31, 2019, 2018 and 2017, advertising costs were $5.9 million, $5.2 million, and $4.9 million, respectively. Foreign currency transactions and translation The assets and liabilities of the Company’s foreign subsidiaries are translated into U.S. dollars at the rate of exchange in effect at the balance sheet date. Income and expense items are translated at the average exchange rates prevailing during the period. Income taxes The provision for income taxes is determined using the asset and liability approach. Under this approach, deferred income taxes represent the expected future tax consequences of temporary differences between the carrying amounts and tax basis of assets and liabilities. The Company records a valuation allowance to reduce deferred tax assets when uncertainty exists regarding their realization. Equity-based compensation The Company measures the cost of equity-based compensation based on grant date fair value and recognizes the cost over the period in which the employee is required to provide service in exchange for the award reduced by forfeitures. Equity-based compensation consists of grants of stock options, deferred stock units, common stock, restricted stock units, and performance stock units. Equity-based compensation expense is included as a component of selling, general, and administrative expenses. Recent accounting pronouncements Recent Accounting Pronouncements Adopted
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 has adopted this standard using the modified retrospective method. The Company recognized the cumulative- effect adjustment of initially applying this standard of $274,000 to the opening balance of retained earnings. The comparative 2017 information has not been restated and continues to be reported under the accounting standard in effect for that period. Refer to Note 3 for further disclosure of the financial statement effect and other significant matters as a result of the adoption of this standard. Date of adoption: Q1 2018
ASU No. 2016-02 Leases (Topic 842) |  | The standard requires lessees to recognize most leases as assets and liabilities on the balance sheet, but record expenses on the statement of operations in a manner similar to current accounting. For lessors, the guidance modifies the classification criteria and accounting for sales-type and direct financing leases. The standard also requires additional disclosures about leasing arrangements and requires a modified retrospective transition approach for existing leases, whereby the standard will be applied to the earliest year presented. 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 has adopted this standard using the modified retrospective approach and elected the transition method to initially apply the new leases standard to all leases that exist at January 1, 2019. Under this transition method, the Company initially applied Topic 842 as of January 1, 2019, and recognized a cumulative-effect adjustment which increased the Company's beginning retained earnings as of January 1, 2019 by approximately $1.6 million. In addition, the Company elected the package of practical expedients permitted under the transition guidance within the new leases standard, which among other things, permitted the Company to carry forward its historical lease classification for leases in place prior to January 1, 2019. The comparative period information has not been restated and continues to be reported and presented under the accounting standards in effect for that period. The standard did not materially impact the Company's consolidated net earnings and had no impact on cash flows. Date of adoption: Q1 2019
Recent Accounting Pronouncements Not Yet Adopted
Standard |  | Description |  | Financial Statement Effect or Other Significant Matters
ASU No. 2016-13 Financial Instruments - Credit Losses (Topic 326) |  | The objective of this standard is to provide financial statement users with more decision-useful information about the expected credit losses on financial instruments and other commitments to extend credit, including trade receivables, held by an entity at each reporting date. The amendments in this update replace the incurred loss impairment methodology in current GAAP with a methodology that reflects expected credit losses and requires consideration of a broader range of reasonable and supportable information to inform credit loss estimates. 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. An entity will apply the amendments in this update through a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is effective, that is, a modified-retrospective approach. |  | The standard is effective for the Company as of January 1, 2020. The Company will adopt the amendments in this update using the modified retrospective approach through a cumulative-effect adjustment to retained earnings as of January 1, 2020. The Company's financial assets that are in the scope of the standard are contract assets and accounts receivables which are short-term in nature. Additionally, the Company has identified and will be implementing appropriate changes to the Company's business processes, policies and internal controls to support reporting and disclosures. Based on the Company's current portfolio of financial assets and forecasts of future macroeconomic conditions, the Company does not anticipate that the adoption of the amendments will have a significant impact on our operating results, financial position or cash flows. Planned date of adoption: Q1 2020
ASU 2018-15 Intangibles - Goodwill and Other - Internal-Use Software (Subtopic 350-40), Customer's Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract |  | The amendments in this update require an entity to apply the same requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract as the entity would for implementation costs incurred to develop or obtain internal-use software. The accounting for the service element is not affected by the amendments in this update. The amendments in this update are effective for fiscal years beginning after December 15, 2019, and interim periods within those fiscal years. Early adoption of the amendments in this update is permitted, including adoption in any interim period. The amendments in this update should be applied either retrospectively or prospectively to all implementation costs incurred after the date of adoption. |  | The Company is currently evaluating the requirements of this standard. The standard is not expected to have a material impact on the Company's financial statements. Planned date of adoption: Q1 2020
ASU No. 2019-12 Income Taxes (Topic 740), Simplifying the Accounting for Income Taxes |  | The amendments in this update simplify the accounting for income taxes by removing certain exceptions to the general principles in Topic 740 and improve consistent application by clarifying and amending existing guidance. The amendments of this standard are effective for fiscal years beginning after December 15, 2020, including interim periods within those fiscal years. Early adoption is permitted, including adoption in any interim period for which financial statements have not been issued, with the amendments to be applied on a respective, modified retrospective or prospective basis, depending on the specific amendment. |  | The Company is currently evaluating the requirements of this standard. The standard is not expected to have a material impact on the Company's financial statements. Planned date of adoption: Q1 2021
The Company considers the applicability and impact of all ASUs. ASUs not listed above were assessed and determined to be either not applicable, or had or are expected to have minimal impact on our financial statements and related disclosures.

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