The consolidated financial statements include the balances of Apogee Enterprises, Inc. and its subsidiaries (Apogee, we, us, our or the Company) after elimination of intercompany balances and transactions. We consolidate variable interest entities related to our New Market Tax Credit transactions as it has been determined that the Company is the primary beneficiary of those entities' operations (refer to Note 11 for more information).

The preparation of the consolidated financial statements in conformity with U.S. generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts in the consolidated financial statements and accompanying notes. Actual results could differ significantly from those estimates.

Our marketable securities are classified as available for sale, and we test for other-than-temporary losses on a quarterly basis or whenever events or changes in circumstances indicate that the carrying amount of a security may not be recoverable. We consider all unrealized losses to be temporary in nature. We intend to hold our securities until the full principal amount can be recovered, and we have the ability to do so based on other sources of liquidity. Marketable securities are included in other current and non-current assets on the consolidated balance sheets and gross realized gains and losses are included in interest and other expense in our consolidated results of operations.

Property, plant and equipment (PP&E) is recorded at cost. Significant improvements and renewals that extend the useful life of the asset are capitalized. Repairs and maintenance are charged to expense as incurred. When an asset is retired or otherwise disposed of, the cost and related accumulated depreciation are removed from the accounts and any related gains or losses are included in selling, general and administrative expenses. Long-lived assets to be held and used, such as PP&E, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount may not be recoverable.

Goodwill represents the excess of the cost over the net tangible and identified intangible assets of acquired businesses. We evaluate goodwill for impairment annually at our year-end, or more frequently if events or changes in circumstances indicate that the carrying value of a reporting unit may not be recoverable. Evaluating goodwill for impairment involves the determination of the fair value of each reporting unit in which goodwill is recorded using a qualitative or quantitative analysis. A reporting unit is an operating segment or a component of an operating segment for which discrete financial information is available and reviewed by management on a regular basis. We identified that each of our nine business units represents a reporting unit for the goodwill impairment analysis. This year we elected to bypass the qualitative assessment process and to proceed directly to comparing the fair value of each of our reporting units to carrying value, including goodwill. If the fair value exceeds the carrying value, goodwill impairment is not indicated. We have followed a consistent discounted cash flow methodology to evaluate goodwill in all periods presented.

based on the annual operating plan and long-term business plan for each reporting unit. These plans take into consideration numerous factors, including historical experience, anticipated future economic conditions and growth expectations for the industries and end markets in which we participate. The plans also take into consideration our assessment of risks inherent in the future cash flows of each business. The discount rate and long-term growth rate assumptions used in our determination of fair value are consistent across reporting units.

Intangible assets with indefinite useful lives are tested for impairment annually at our year-end, or more frequently if events or changes in circumstances indicate that it is more likely than not that the asset is impaired. If the carrying amount of an indefinite-lived intangible asset exceeds its fair value, an impairment loss is recognized in an amount equal to that excess. Fair value is measured using the relief-from-royalty method. This method assumes the trade name or mark has value to the extent that the owner is relieved of the obligation to pay royalties for the benefits received from them. This method requires us to estimate the future revenue from the related asset, the appropriate royalty rate, and the weighted average cost of capital. The assessment of fair value involves significant judgment and projections about future performance.

Definite-lived intangible assets are amortized based on estimated useful lives ranging from 18 months to 20 years and are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount may not be recoverable. The estimated useful lives of all intangible assets are reviewed annually, and we have determined that the remaining lives were appropriate.

We obtain commercial insurance to provide coverage for potential losses in areas such as employment practices, workers' compensation, directors and officers, automobile, architect's and engineer's errors and omissions, product rework and general liability. A substantial portion of this risk is retained on a self-insured basis through our wholly-owned insurance subsidiary. We establish a reserve for estimated ultimate losses on reported claims and those incurred but not yet reported utilizing actuarial projections. Reserves are classified within other current liabilities or long-term self-insurance reserves based on expectations of when the estimated loss will be paid.

Additionally, we maintain a self-insurance reserve for health insurance programs offered to eligible employees, included within accrued self-insurance reserves. The reserve includes an estimate for losses on reported claims as well as for amounts incurred but not yet reported, based on historical trends.

We are subject to claims associated with our products and services, principally as a result of disputes with our customers involving the performance or aesthetics of our architectural products and services. We reserve estimated exposures on known claims, as well as on a portion of anticipated claims for product warranty and rework costs, based on historical product liability claims as a ratio of sales. We also reserve for estimated exposures on other claims as they are known and reasonably estimable. Reserves are included in other current and non-current liabilities based on the estimated timing of dispute resolution.

Local currencies are considered the functional currencies for our subsidiaries outside of the United States. Assets and liabilities of these subsidiaries are translated at the exchange rates at the balance sheet date. Income and expense items are translated using average monthly exchange rates. Translation adjustments are included in accumulated other comprehensive loss in the consolidated balance sheets.

We periodically enter into forward purchase foreign currency contracts, generally with an original maturity date of less than one year, to hedge foreign currency exchange rate risk. We also have an interest rate swap to hedge exposure to variability in cash flows from interest payments on our floating-rate revolving credit facility. All derivative instruments within the scope of ASC 815, Derivatives and Hedging, are recorded on the consolidated balance sheets at fair value. All hedging instruments that qualify for hedge accounting are designated and effective as hedges. Instruments that do not qualify for hedge accounting are marked to market with changes recognized in current earnings. Cash flows from derivative instruments are classified in the statements of cash flows in the same category as the cash flows from the items subject to designated hedge or undesignated (economic) hedge relationships.We do not hold or issue derivative financial instruments for trading purposes and are not a party to leveraged derivatives.

On March 4, 2018, we adopted ASC 606, Revenue from Contracts with Customers, and as a result, made updates to our significant accounting policy for revenue recognition. We generate revenue from the design, engineering and fabrication of architectural glass, curtainwall, window, storefront and entrance systems, and from installing those products on commercial buildings. We also

During fiscal 2020, approximately 44 percent of our total revenue is recognized at the time products are shipped from our manufacturing facilities, which is when control is transferred to our customer, consistent with past practices. These businesses do not generate contract-related assets or liabilities. Variable consideration associated with these contracts and orders, generally related to early pay discounts or volume rebates, is not considered significant.

We also have three businesses which operate under long-term, fixed-price contracts, representing approximately 31 percent of our total revenue in the current year. The contracts for these businesses have a single, bundled performance obligation, as these businesses generally provide interrelated products and services and integrate these products and services into a combined output specified by the customer. The customer obtains control of this combined output, generally integrated window systems or installed window and curtainwall systems, over time. We measure progress on these contracts following an input method, by comparing total costs incurred to-date to the total estimated costs for the contract, and record that proportion of the total contract price as revenue in the period. Contract costs include materials, labor and other direct costs related to contract performance. We believe this method of recognizing revenue is consistent with our progress in satisfying our contract obligations.

Due to the nature of the work required under these long-term contracts, the estimation of total revenue and costs incurred throughout a project is subject to many variables and requires significant judgment. It is common for these contracts to contain potential bonuses or penalties which are generally awarded or charged upon certain project milestones or cost or timing targets, and can be based on customer discretion. We estimate variable consideration at the most likely amount to which we expect to be entitled. We include estimated amounts in the transaction price to the extent that it is probable that a significant reversal of cumulative revenue recognized will not occur when the uncertainty associated with the variable consideration is resolved. Our estimates of variable consideration and determination of whether to include estimated amounts in the transaction price are based largely on our assessments of anticipated performance and all information (historical, current and forecasted) that is reasonably available to us.

Long-term contracts are often modified to account for changes in contract specifications and requirements of work to be performed. We consider contract modifications to exist when the modification, generally through a change order, either creates new or changes existing enforceable rights and obligations, and we evaluate these types of modifications to determine whether they may be considered distinct performance obligations. In many cases, these contract modifications are for goods or services that are not distinct from the existing contract, due to the significant integration service provided in the context of the contract. Therefore, these modifications are accounted for as part of the existing contract. The effect of a contract modification on the transaction price and our measure of progress is recognized as an adjustment to revenue, generally on a cumulative catch-up basis.

Typically, under these fixed-price contracts, we bill our customers following an agreed-upon schedule based on work performed. Because the progress billings do not generally correspond to our measurement of revenue on a contract, we generate contract assets when we have recognized revenue in excess of the amount billed to the customer. We generate contract liabilities when we have billed the customer in excess of revenue recognized on a contract.

Finally, we have one business, making up approximately 25 percent of our total revenue in the current year, that recognizes revenue following an over-time output method based upon units produced. The customer is considered to have control over the products at the time of production, as the products are highly customized with no alternative use, and we have an enforceable right to payment for performance completed over the production period. We believe this over-time output method of recognizing revenue reasonably depicts the fulfillment of our performance obligations under our contracts. Prior to the adoption of ASC 606, this business recognized revenue at the time of shipment. Billings still occur upon shipment. Therefore, contract assets are generated for the unbilled amounts on contracts when production is complete. Variable consideration associated with these orders, generally related to early pay discounts, is not considered significant.

Research and development costs are expensed as incurred and were $16.6 million, $19.5 million and $14.0 million for fiscal 2020, 2019 and 2018, respectively. Of these amounts, $8.0 million, $6.5 million and $1.5 million, respectively, were focused primarily upon design of custom window and curtainwall systems in accordance with customer specifications and are included in cost of sales. The remainder of the expense is included within selling, general and administrative expenses.

The Company recognizes deferred tax assets and liabilities based upon the future tax consequences of temporary differences between financial statement carrying amounts of assets and liabilities and their respective tax bases. See Note 14 for additional information regarding income taxes.

In March 2020, the World Health Organization declared a novel strain of coronavirus, COVID-19, a global pandemic. This contagious disease outbreak, which has continued to spread, and the related adverse public health developments, have adversely affected work forces, economies and financial markets globally. Quarantines and "stay in place" orders, the timing and length of containment and eradication solutions, travel restrictions, absenteeism by infected workers, labor shortages or other disruptions to our suppliers or our customers, will adversely impact our sales and operating results and has resulted in some project delays. In addition, the pandemic has resulted in an economic downturn that could affect the ability of our customers to obtain financing for projects and therefore impact demand for our products and services. Order lead times could be extended or delayed and pricing for needed materials could increase. Some products or services may become unavailable if the regional or global spread were significant enough to prevent alternative sourcing. Accordingly, we are considering alternative product sourcing in the event that product supply becomes problematic. In addition, the outbreak of COVID-19 could disrupt our operations due to absenteeism by infected or ill employees, or absenteeism by members of management and other employees who elect not to come to work due to the illness or due to quarantines.

To date, we have experienced some delays in projects due to COVID-19. While the construction and construction-related industries are considered an "essential service" in most jurisdictions in which we operate, site closures or project delays have occurred and increased social distancing and health-related precautions are required on many work sites, which may cause additional project delays and additional costs to be incurred. Within the LSO segment, we also experienced the temporary closure of many of our customer's retail locations and we temporarily shut down our factories in this segment to comply with government "stay in place" orders. We expect this global pandemic to have an impact on our revenue and our results of operations, the size and duration of which we are currently unable to predict. The global outbreak of COVID-19 continues to rapidly evolve. The extent to which COVID-19 will impact our business will depend on future developments, which are highly uncertain and cannot be predicted with confidence, such as the ultimate severity and spread of the disease, the duration of the outbreak, travel restrictions and social distancing in the United States and other countries, business closures or business disruptions and the effectiveness of actions taken in the United States and other countries to contain and treat the disease.

In February 2016, the FASB issued ASU 2016-02, Leases, which provides for comprehensive changes to lease accounting. The standard requires that a lessee recognize a lease obligation liability and a right-to-use asset for virtually all leases of property, plant and equipment, subsequently amortized over the lease term.

We adopted this standard at the beginning of fiscal 2020, following the modified retrospective application approach and elected not to restate prior periods. Adoption of this standard resulted in reflecting a right-of-use asset and lease liability on our consolidated balance sheet in the first quarter of fiscal 2020 of approximately $50 million. In adopting the new standard, we elected the package of practical expedients, as well as the practical expedient not to separate nonlease components from lease components. Adoption of this standard did not have a significant impact on our consolidated results of operations, consolidated statements of cash flows, our liquidity, or on our debt covenant compliance under our current agreements. Refer to additional information in Note 9.

In June 2016, the FASB issued ASU 2016-13, Measurement of Credit Losses on Financial Instruments, which revises guidance for the accounting for credit losses on financial instruments within its scope. The new standard introduces an approach, based on expected losses, to estimate credit losses on certain types of financial instruments, including accounts receivable, and modifies the impairment model for available-for-sale debt securities. This ASU is effective and has been adopted at the beginning of our fiscal year 2021. Entities are required to apply the standard’s provisions as a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is adopted. We are substantially complete with our implementation efforts, which have included identification and analysis of expected credit losses on our financial assets, primarily made up of trade receivables. We do not expect the adoption of this standard to have a significant impact on our consolidated results of operations, consolidated balance sheets or on our consolidated statements of cash flows. We have begun to update existing internal controls and processes to support ongoing monitoring, accounting and disclosure under this new standard, but such changes were not deemed to be material to our overall system of internal controls.