ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES | ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Nature of Operations U.S. Concrete, Inc., a Delaware corporation, is a heavy building materials supplier of aggregates, ready-mixed concrete and concrete-related products and services to the construction industry in several major markets in the United States, as well as select markets in the U.S. Virgin Islands and Canada. U.S. Concrete, Inc. is a holding company and conducts its businesses through its consolidated subsidiaries. In these notes to the consolidated financial statements (these “Notes”), we refer to U.S. Concrete, Inc. and its subsidiaries as “we,” “us,” “our,” the “Company,” or “U.S. Concrete,” unless we specifically state otherwise or the context indicates otherwise. Basis of Presentation The consolidated financial statements consist of the accounts of U.S. Concrete, Inc. and its majority or wholly owned subsidiaries. All significant intercompany account balances and transactions have been eliminated. Certain computations may be impacted by the effect of rounding. For acquisitions accounted for as business combinations, all of the assets acquired and liabilities assumed are recorded at their respective fair value as of the date of the acquisition. The results of operations of acquisitions (discussed in more detail in Note 2 ) are included in the consolidated financial statements from the respective date of acquisition. Reclassifications Certain reclassifications have been made to prior year amounts to conform with the current year presentation. Use of Estimates The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America (“U.S. GAAP”) requires the use of estimates and assumptions by management in determining the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities as of the date of the financial statements and the reported amounts of revenue and expenses during the reporting period. Actual results could differ from those estimates. Estimates and assumptions that we consider significant in the preparation of our financial statements include those related to our business combinations, goodwill, intangibles, accruals for self-insurance, income taxes, valuation of contingent consideration, allowance for doubtful accounts, the valuation of inventory, and the valuation and useful lives of property, plant and equipment. Business Combinations We evaluate whether transactions should be accounted for as acquisitions (or disposals) of assets or as business combinations using a screen to determine when a set of assets is not a business. The screen requires that when substantially all of the fair value of the gross assets acquired (or disposed of) is concentrated in a single identifiable asset or a group of similarly identifiable assets, the set is not a business. We account for business combinations under the acquisition method of accounting. Accordingly, we recognize assets acquired and liabilities assumed in a business combination, including contingent liabilities and deferred payment obligations, based on the fair value estimates as of the date of acquisition. Goodwill is measured as the excess of the fair value of the consideration paid over the fair value of the identified net tangible and intangible assets acquired. The fair value of acquired receivables, inventory, machinery and equipment, land and buildings are based on inputs derived principally from, or corroborated by, observable market data (i.e., Level 2 inputs as defined below under the heading “Fair Value of Financial Instruments”). Additionally, we may use a cost valuation approach to value long-lived assets when a market valuation approach is unavailable. The estimates used for determining the fair value of certain other assets and liabilities related to acquisitions, such as mineral reserves and intangible assets, are considered Level 3 inputs (as defined below under the heading “Fair Value of Financial Instruments”). We utilize recognized valuation techniques, including the income approach, sales approach and cost approach to value the net assets acquired. We generally use a third party valuation firm to assist us with developing our estimates of fair value. In determining the fair value of mineral reserves, we use an excess earnings approach, which requires the use of estimated future cash flows, net of capital investments in the specific operation. Management’s cash flow projections involve the use of significant estimates and assumptions with respect to the expected production of the aggregate facility over the estimated time period, sales prices, shipment volumes, and expected profit margins. In determining the fair value of intangible assets, we use the cost approach (primarily through the cost-to-recreate method), the market approach and the income approach. The income approach may incorporate the use of a discounted cash flow method. In applying the discounted cash flow method, the estimated future cash flows and residual values for each intangible asset are discounted to a present value using a discount rate based on an estimated weighted average cost of capital for the building materials industry. Cash flow projections are based on management’s estimates of economic and market conditions including revenue growth rates, operating margins, capital expenditures and working capital requirements. The impact of changes to the estimated fair value of assets acquired and liabilities assumed is recorded in the reporting period in which the adjustment is identified. Final valuations of assets and liabilities are obtained and recorded as soon as practical, but no later than one year from the date of the acquisition. See Note 12 for additional information regarding balances of contingent consideration obligations. Foreign Currency The Company accounts for its Canadian operations using the United States dollar (“US dollar”) as the functional currency, as the primary economic environment in which the entity transacts business is the United States. Transactions in Canadian dollars are recognized at the rates of exchange prevailing at the dates of the transaction. At the end of each reporting period, monetary assets and liabilities denominated in Canadian dollars are remeasured at the rates prevailing at that date. Foreign currency differences arising on remeasurement of monetary items are recognized in earnings. Cash and Cash Equivalents We record as cash equivalents all highly liquid investments having maturities of three months or less at the original date of purchase. Our cash equivalents may include money market accounts, certificates of deposit and commercial paper of highly rated corporate or government issuers. We classify our cash equivalents as held-to-maturity. Cash equivalents are stated at cost plus accrued interest, which approximates fair value. The maximum amount placed in any one financial institution is limited in order to reduce risk. At times, our cash and investments may be in excess of amounts insured by either the Federal Deposit Insurance Corporation or the Canadian Deposit Insurance Corporation. We have not experienced any losses on these accounts. Cash held as collateral or escrowed for contingent liabilities, if any, is included in other current and noncurrent assets based on the expected release date of the underlying obligation. Business and Credit Concentrations We grant credit, generally without collateral, to our customers, which include general contractors, municipalities and commercial companies located primarily in Texas, New Jersey, New York City, Philadelphia, Washington, D.C., California, Oklahoma, the U.S. Virgin Islands and Hawaii. Consequently, we are subject to potential credit risk related to changes in business and economic factors in those states and territories. We generally have lien rights in the work we perform, and concentrations of credit risk are limited because of the diversity of our customer base. Further, our management believes that our contract acceptance, billing and collection policies are adequate to limit potential credit risk. We did not have any customers that accounted for more than 10% of our revenue or any suppliers that accounted for more than 10% of our cost of goods sold in 2020, 2019 or 2018. We did not have any customers that accounted for more than 10% of our accounts receivable as of December 31, 2020 or December 31, 2019. Accounts Receivable Effective January 1, 2020, we adopted Accounting Standards Codification (“ASC”) 326, “Current Expected Credit Losses.” While the prior accounting rules used a model of incurred losses to estimate credit losses on certain types of financial instruments, including trade accounts receivable, ASC 326 requires entities to use a forward-looking approach based on expected losses, which may result in the earlier recognition of allowances for losses. We applied the new credit loss model on a prospective basis and recorded a cumulative-effect adjustment, net of taxes, of $3.3 million to opening retained earnings for the increase to the allowance for doubtful accounts. With the adoption of ASC 326, we amended our accounting policy for accounts receivable, which follows. Accounts receivable consist primarily of receivables from contracts with customers for the sale of ready-mixed concrete, aggregates and other products. Accounts receivable initially are recorded at the transaction amount. We utilize liens or other legal remedies in our collection efforts of certain accounts receivable. Each reporting period, we evaluate the collectability of the receivables and record an allowance for doubtful accounts and customer disputes for our estimated losses on balances that may not be collected in full, which reduces the accounts receivable balance. Additions to the allowance result from a provision for bad debt expense that is recorded to selling, general and administrative expenses. A provision for customer disputes recorded as a reduction to revenue also increases the allowance. Accounts receivable are written off and reflected as a reduction to the allowance if and when we determine the receivable will not be collected. We determine the amount of bad debt expense and customer dispute losses each reporting period and the resulting adequacy of the allowance at the end of each reporting period by using a combination of historical loss experience, customer-by-customer analysis, and subjective assessments of our loss exposure. For accounts receivable balances as of and prior to December 31, 2019, our allowance for doubtful accounts was based on our estimated probable losses. Beginning January 1, 2020, upon our adoption of ASC 326, our allowance for doubtful accounts is based on our estimated expected losses, and the underlying evaluations include analysis of forward-looking information, including economic conditions. Inventories Inventories consist primarily of cement and other raw materials, aggregates at our pits and quarries, and building materials that we hold for sale or use in the ordinary course of business. Inventories are measured at the lower of cost or net realizable value, which is the estimated selling price in the ordinary course of business, less reasonably predictable costs of completion, disposal and transportation. Cost in all periods presented was determined using the average cost and first-in, first-out methods. We reduce the carrying value of our inventories for estimated excess and obsolete inventories equal to the difference between the cost of inventory and its estimated realizable value based upon assumptions about future product demand and market conditions. The value is not increased with any changes in circumstances that would indicate an increase after the remeasurement date. If actual product demand or market conditions are less favorable than those projected by management, inventory write-downs may be required. Property, Plant and Equipment, Net We present property, plant and equipment at cost less accumulated depreciation. We capitalize leasehold improvements on properties held under operating leases and amortize those costs over the lesser of their estimated useful lives or the applicable lease term. We record amortization of assets recorded under finance leases as depreciation expense. We compute depletion of mineral deposits as such deposits are extracted utilizing the unit-of-production method. We expense maintenance and repair costs when incurred and capitalize and depreciate expenditures for major renewals and betterments that extend the useful lives of our existing assets. When we retire or dispose of property, plant or equipment, we remove the related cost and accumulated depreciation from our accounts and reflect any resulting gain or loss in our consolidated statements of operations. We use the straight-line method to compute depreciation and amortization of these assets, other than mineral deposits, over the following estimated useful lives: Class of Assets Range of Service Lives Buildings and land improvements 10 to 40 years Machinery and equipment 10 to 30 years Mixers, trucks and other vehicles 1 to 12 years Other 3 to 10 years Reclamation Costs Reclamation costs resulting from normal use of long-lived assets are recognized over the period the asset is in use when there is a legal obligation to incur these costs upon retirement of the assets. Additionally, reclamation costs resulting from normal use under a mineral lease are recognized over the expected lease term when there is a legal obligation to incur these costs upon expiration of the lease. The obligation, which is not reduced by estimated offsetting cash flows, is recorded at fair value as a liability at the obligating event date and is accreted through charges to operating expenses. This fair value is also capitalized as part of the carrying amount of the underlying asset and depleted over the estimated useful life of the asset. If the obligation is settled for other than the carrying amount of the liability, a gain or loss is recognized on settlement. To determine the fair value of the obligation, we estimate the cost (including a reasonable profit margin) for a third party to perform the legally required reclamation tasks. This cost is then increased for both future estimated inflation and an estimated market risk premium related to the estimated years to settlement. Once calculated, this cost is discounted to fair value using present value techniques with a credit-adjusted, risk-free rate commensurate with the estimated years to settlement. In estimating the settlement date, we evaluate the current facts and conditions to determine the most likely settlement date. If this evaluation identifies alternative estimated settlement dates, we use a weighted average settlement date considering the probabilities of each alternative. We review reclamation obligations at least annually for revisions to the costs or a change in the estimated settlement date. Additionally, reclamation obligations are reviewed in the period that a triggering event occurs that would result in either a revision to the cost or a change in the estimated settlement date. Examples of events that would trigger a change in the cost include a new reclamation law or amendment of an existing mineral lease. Examples of events that would trigger a change in the estimated settlement date include the acquisition of additional reserves or the closure of a facility. For reclamation obligation amounts, (referred to in our financial statements as asset retirement obligations) see Note 10 . Impairment of Long-lived Assets We evaluate our long-lived assets for impairment and the reasonableness of the estimated useful lives whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable or that a change in useful life may be appropriate. Recoverability of assets is measured by comparing the carrying amount of an asset to future undiscounted net cash flows expected to be generated by the asset. Such evaluations for impairment are significantly impacted by estimates of future prices for our products, capital needs, economic trends in the applicable construction sector and other factors. If we consider such assets to be impaired, the impairment we recognize is measured by the amount by which the carrying amount of the assets exceeds their fair value. Assets to be disposed of by sale are reflected at the lower of their carrying amounts or fair value, less cost to sell. In 2018, we recorded a $1.3 million non-cash impairment for properties in New Jersey and Michigan that were sold in 2018. In 2020, we determined that, as a result of initiatives to consolidate the Company's branding in our New York operations, the useful life of one of our definite-lived trade name intangible assets needed to be shortened. We accounted for the change in useful life prospectively effective October 1, 2020 after determining there was no impairment of the carrying value. See Note 6 for additional information regarding the weighted average remaining lives of our trade name intangible assets and our future amortization of definite-lived intangible assets by year. Leases As of January 1, 2019, we adopted ASC 842, “Leases,” by using the transition approach that permitted application of the new standard at the adoption date instead of the earliest comparative period presented in the financial statements. The core principle of the guidance is that lessees are required to recognize a right-of-use asset and a lease liability, measured on a discounted basis, at the commencement date for all leases with terms greater than twelve months, excluding mineral leases. Additionally, this guidance requires disclosures to help investors and other financial statement users better understand the amount, timing and uncertainty of cash flows arising from leases, including qualitative and quantitative requirements. As a result of adopting the new standard, we recorded additional lease assets and lease liabilities of $76.9 million and $79.2 million, respectively, on the consolidated balance sheet as of January 1, 2019. The additional lease assets equal the lease liabilities, excluding the impact of deferred rent, which was previously recorded in accrued liabilities. The standard did not materially impact our consolidated net earnings and had no impact on cash flows. In addition, we elected the package of practical expedients permitted under the transition guidance within the new standard, which among other things, allowed us to carry forward the historical lease classification. We also elected the practical expedient related to land easements, allowing us to carry forward our accounting treatment for land easements on existing agreements. We elected to exclude leases with an initial term of 12 months or less from the consolidated balance sheet. We made an accounting policy election to combine lease and non-lease components when calculating the lease liability under the new standard. Non-lease components, which may include taxes, maintenance, insurance and certain other expenses applicable to the leased property, are primarily considered variable costs. We did not elect the hindsight practical expedient to determine the lease term for existing leases. We are the lessee in a lease contract when we obtain the right to control the asset. We lease certain land, office space, equipment and vehicles. Most leases include one or more options to renew, with renewal terms that can extend the lease term from one Certain of our lease agreements include rental payments based on a percentage of volume sold over contractual levels and others include rental payments adjusted periodically for inflation. Our lease agreements do not contain any material residual value guarantees or material restrictive covenants. Where observable, we use the implicit interest rate in determining the present value of future payments. Where the implicit interest rate is not observable, we use our incremental borrowing rate based on the information available at lease commencement date in determining the present value of future payments. We give consideration to our outstanding debt as well as publicly available data for instruments with similar characteristics when calculating our incremental borrowing rates. See Note 9 for additional information regarding our leases. Goodwill Impairment Goodwill represents the cost of net assets acquired in a business combination over the fair value of the acquired net identifiable tangible and intangible assets. Goodwill is assigned to the reporting unit that it will benefit. We do not amortize goodwill but instead evaluate it for impairment within the reporting unit. Goodwill impairment exists when the fair value of a reporting unit is less than its carrying amount. Goodwill is tested for impairment annually, as of October 1, or more frequently if events or circumstances indicate that assets might be impaired. The annual test for impairment is performed in the fourth quarter of each year, because this period gives us the best visibility of the reporting units’ operating performance for the current year (seasonally, April through October are our highest revenue and production months) and our outlook for the upcoming year, because much of our customer base is finalizing operating and capital budgets during the fourth quarter. We have the option of either assessing qualitative factors to determine whether it is more likely than not that the carrying value of our reporting units exceeds their respective fair value or proceeding directly to a quantitative test. We elected to perform the quantitative impairment test for all years presented. The quantitative impairment test involves estimating the fair value of our reporting units and comparing the result to the reporting unit's carrying value, including goodwill. If the fair value is less than the carrying value, goodwill impairment is determined to be the amount by which a reporting unit’s carrying value exceeds its fair value, not to exceed the carrying amount of goodwill. We changed our reporting units in 2019 and performed the impairment assessment both before and after the change, with no difference in the assessment results. There was no impairment of goodwill in 2020, 2019 or 2018. We generally estimate fair value using an equally weighted combination of discounted cash flows and multiples of invested capital to EBITDA. The discounted cash flow model includes forecasts for revenue and cash flows discounted at our weighted average cost of capital. We calculate multiples of invested capital to EBITDA using a weighted average of two selected 12 month period results by reporting unit compared to the enterprise value of the Company, which is determined based on the combination of the market value of our capital stock and total outstanding debt. Determining the fair value of our reporting units involves the use of significant estimates and assumptions and considerable management judgment. We base our fair value estimates on assumptions we believe to be reasonable at the time, but such assumptions are subject to inherent uncertainty and actual results may differ. Intangible Assets Our definite-lived intangible assets consist of identifiable trade names, customer relationships, non-compete agreements, leasehold interests, favorable contracts and emissions credits that were acquired through business or asset purchases. We amortize these intangible assets over their estimated useful lives, which range from 3 to 25 years, using a straight-line approach. Our indefinite-lived intangible assets consist of a land right acquired in a 2014 acquisition that will be reclassified to property, plant and equipment upon the completion of certain settlement activities. For the land right, we performed a qualitative assessment and determined that this indefinite-lived intangible asset was not impaired as of December 31, 2020. See Note 6 for further information about our intangible assets. Debt Issuance Costs Debt issuance costs represent fees and other direct incremental costs incurred in connection with the Company's borrowings. Debt issuance costs are initially capitalized and then are amortized as interest expense over the scheduled maturity period of the debt. Upon any prepayment of the related debt, we accelerate the recognition of the related costs as refinancing or extinguishment of debt. The issuance costs related to our line-of-credit arrangement are recorded in other assets and amortized over the term of the arrangement, regardless of whether there are any outstanding borrowings. Revenue We derive substantially all of our revenue from the production and delivery of ready-mixed concrete, aggregates and related building materials. Revenue from the sale of these products is recognized when control passes to the customer, which generally occurs at the point in time when products are delivered. We do not deliver products unless we have an order or other documentation authorizing delivery to our customers. Revenue is measured as the amount of consideration we expect to receive in exchange for transferring goods. Sales and other taxes we collect concurrently with revenue-producing activities are excluded from revenue. Incidental items, such as mix formulation and testing services that are immaterial in the context of the revenue contract and completed in close proximity to the revenue-producing activities, are recorded within cost of goods sold as incurred. We generally do not provide post-delivery services, such as paving or finishing. Customer dispute costs are recorded as a reduction of revenue at the end of each period and are estimated by using a combination of historical customer experience and a customer-by-customer analysis. Amounts billed to customers for delivery costs are classified as a component of total revenue. Our payment terms vary by the type and location of our customer and the products offered. The term between invoicing and when payment is due is not significant. As permitted under U.S. GAAP, we have elected not to assess whether a contract has a significant financing component if the expectation at contract inception is such that the period between payment by the customer and the transfer of the promised goods to the customer will be one year or less. See Note 18 for disaggregation of revenue by segment and product, which we believe best depicts how the nature, amount, timing and uncertainty of our revenue and cash flows are affected by economic factors. We do not have any customer contracts that meet the definition of unsatisfied performance obligations in accordance with U.S. GAAP. Cost of Goods Sold Cost of goods sold consists primarily of product costs and operating expenses, excluding depreciation, depletion and amortization, which is reported separately. Operating expenses consist primarily of wages, benefits, insurance and other expenses attributable to plant operations, repairs and maintenance and delivery costs. Selling, General and Administrative Expenses Selling expenses consist primarily of sales commissions, salaries of sales managers, travel and entertainment expenses and trade show expenses. General and administrative expenses consist primarily of executive and administrative compensation and benefits, office rent, utilities, communication and technology expenses, provision for doubtful accounts and legal and professional fees. Income Taxes We use the asset and liability method of accounting for income taxes under which we record deferred income taxes (which are included on our balance sheets as either other assets or deferred income taxes, as appropriate), based on temporary differences between the financial reporting and tax bases of assets and liabilities and use enacted tax rates and laws that we expect will be in effect when the temporary differences are expected to reverse. We record a valuation allowance to reduce the deferred tax assets to the amount that is more likely than not to be realized and recognize interest and penalties related to uncertain tax positions in income tax expense. We include additional taxes on global intangible low-tax income (“GILTI”) in income tax expense in the year incurred. Contingent Consideration We record an estimate of the fair value of contingent consideration, incurred with certain acquisitions, within accrued liabilities and other long-term obligations and deferred credits on our consolidated balance sheets. We estimate the fair value of any acquisition-related contingent consideration arrangements using a Monte Carlo simulation model, an income approach or a discounted cash flow technique, as appropriate. The fair value of the contingent consideration arrangements is sensitive to changes in the forecasts of earnings and/or the relevant operating metrics and changes in discount rates. The fair value of contingent consideration arrangements is reassessed quarterly based on assumptions used in our latest projections and input provided by practice leaders and management. Any change in the fair value estimate, which could include accretion of interest expense due to passage of time as well as any changes in the inputs to the model, is recorded in our consolidated statement of operations for that period. The current portion of contingent consideration is included in accrued liabilities and the long-term portion is included in other long-term obligations and deferred credits on our consolidated balance sheets. For changes in our contingent consideration balances, see Note 12 . Fair Value of Financial Instruments Fair value is defined as the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants as of the measurement date. Accounting guidance also establishes a hierarchy for inputs used in measuring fair value that maximizes the use of observable inputs and minimizes the use of unobservable inputs by requiring that the most observable inputs be used when available. Observable inputs are inputs market participants would use in valuing the asset or liability and are developed based on market data obtained from independent sources. Unobservable inputs are inputs that reflect our assumptions about the factors market participants would use in valuing the asset or liability. The guidance establishes three levels of inputs that may be used to measure fair value: Level 1: Quoted prices in active markets for identical assets or liabilities. Level 2: Inputs other than Level 1 that are observable, either directly or indirectly, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities. Level 3: Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities. Assets and liabilities are classified in their entirety based on the lowest level of input that is significant to the fair value measurements. We review the fair value hierarchy classification on a quarterly basis. Changes in the observability of valuation inputs may result in a reclassification of levels for certain assets and liabilities within the fair value hierarchy. Our other financial instruments consist of cash and cash equivalents, accounts receivable, accounts payable, and long-term debt. We consider the carrying values of cash and cash equivalents, accounts receivable and accounts payable to be representative of their respective fair value because of their short-term maturities or expected settlement dates. The carrying values of the outstanding amounts under our Revolving Facility (as defined in Note 8 ) and our operating and finance lease assets and liabilities approximate fair value due to the nature of the underlying collateral associated with the debt along with floating interest rates. For further information on financial instruments, see Note 10 regarding our other long-term obligations and deferred credits. As of January 1, 2020, we adopted a FASB update to disclosure requirements for fair value measurement, which removed, modified and added certain disclosure requirements related to fair value measurements covered in Topic 820, “Fair Value Measurement.” The adoption of this update did not have a material impact on the consolidated financial statements. 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