REVENUES	9 Months Ended
	Sep. 30, 2021
REVENUES [Abstract]
REVENUES	Note 4: revenueS Revenues are measured as the amount of consideration we expect to receive in exchange for transferring goods or providing services. Sales and other taxes we collect are recorded as liabilities until remitted and thus are excluded from revenues. Costs to obtain and fulfill contracts (primarily asphalt construction paving contracts) are immaterial and are expensed as incurred when the expected amortization period is one year or less. Our segment total revenues by geographic market (excluding the U.S. Concrete acquisition which is only presented by segment) for the three and nine month periods ended September 30, 2021 and 2020 are disaggregated as follows: Three Months Ended September 30, 2021in thousandsAggregates Asphalt Concrete Calcium Total Total Revenues by Geographic Market 1 East$     362,913  $     44,019  $     63,137  $              0  $      470,069  Gulf Coast 616,832  52,601  19,688  1,474  690,595  West 159,334  124,032  14,696  0  298,062  U.S. Concrete 33,330  0  121,704  0  155,034  Segment sales$  1,172,409  $   220,652  $   219,225  $       1,474  $   1,613,760  Intersegment sales (97,254) (97,254) Total revenues$  1,075,155  $   220,652  $   219,225  $       1,474  $   1,516,506  Three Months Ended September 30, 2020in thousandsAggregates Asphalt Concrete Calcium Total Total Revenues by Geographic Market 1 East$     360,985  $     46,212  $     73,181  $              0  $      480,378  Gulf Coast 535,215  55,894  18,889  1,354  611,352  West 152,762  133,095  10,737  0  296,594  Segment sales$  1,048,962  $   235,201  $   102,807  $       1,354  $   1,388,324  Intersegment sales (78,434) 0  0  0  (78,434) Total revenues$     970,528  $   235,201  $   102,807  $       1,354  $   1,309,890  Nine Months Ended September 30, 2021in thousandsAggregates Asphalt Concrete Calcium Total Total Revenues by Geographic Market 1 East$     960,679  $    104,216  $    184,492  $               0  $    1,249,387  Gulf Coast 1,743,200  140,088  55,714  5,494  1,944,496  West 455,476  336,092  34,874  0  826,442  U.S. Concrete 33,330  0  121,705  0  155,035  Segment sales$  3,192,685  $    580,396  $    396,785  $        5,494  $    4,175,360  Intersegment sales (229,463) (229,463) Total revenues$  2,963,222  $    580,396  $    396,785  $        5,494  $    3,945,897  Nine Months Ended September 30, 2020in thousandsAggregates Asphalt Concrete Calcium Total Total Revenues by Geographic Market 1 East$     951,090  $    102,053  $    206,954  $               0  $    1,260,097  Gulf Coast 1,596,321  140,253  53,801  5,269  1,795,644  West 440,373  355,634  37,500  0  833,507  Segment sales$  2,987,784  $    597,940  $    298,255  $        5,269  $    3,889,248  Intersegment sales (207,541) 0  0  0  (207,541) Total revenues$  2,780,243  $    597,940  $    298,255  $        5,269  $    3,681,707  1The geographic markets are defined by states/countries as follows: East market — Arkansas, Delaware, Illinois, Kentucky, Maryland, North Carolina, Pennsylvania, Tennessee, Virginia, and Washington D.C.Gulf Coast market — Alabama, Florida, Georgia, Louisiana, Mississippi, Oklahoma, Quintana Roo (Mexico), South Carolina and TexasWest market — Arizona, California and New Mexico U.S. Concrete — British Columbia (Canada), California, Hawaii, New Jersey, New York, Oklahoma, Pennsylvania, Texas, the U.S. Virgin Islands, and Washington D.C. Total revenues are primarily derived from our product sales of aggregates (crushed stone, sand and gravel, sand and other aggregates), asphalt mix and ready-mixed concrete, and include freight & delivery costs that we pass along to our customers to deliver these products. We also generate service revenues from our asphalt construction paving business and service revenues related to our aggregates business, such as landfill tipping fees. Our total service revenues were $66,183,000 (4.4% of total revenues) and $63,347,000 (4.8% of total revenues) for the three months ended September 30, 2021 and 2020, respectively, and $168,201,000 (4.3% of total revenues) and $160,285,000 (4.4% of total revenues) for the nine months ended September 30, 2021 and 2020, respectively. Our products typically are sold to private industry and not directly to governmental entities. Although approximately 45% to 55% of our aggregates shipments have historically been used in publicly-funded construction, such as highways, airports and government buildings, relatively insignificant sales are made directly to federal, state, county or municipal governments/agencies. Therefore, although reductions in state and federal funding can curtail publicly-funded construction, the vast majority of our aggregates business is not directly subject to renegotiation of profits or termination of contracts with state or federal governments. PRODUCT REVENUES Revenue is recognized when obligations under the terms of a contract with our customer are satisfied; generally this occurs at a point in time when our aggregates, asphalt mix and ready-mixed concrete are shipped/delivered and control passes to the customer. Revenue for our products is recorded at the fixed invoice amount and payment is due by the 15th day of the following month — we do not offer discounts for early payment. Freight & delivery generally represents pass-through transportation we incur (including our administrative costs) and pay to third-party carriers to deliver our products to customers and are accounted for as a fulfillment activity. Likewise, the costs related to freight & delivery are included in cost of revenues. Freight & delivery revenues are as follows: Three Months Ended Nine Months Ended September 30 September 30in thousands2021 2020 2021 2020 Freight & Delivery Revenues Total revenues$  1,516,506  $  1,309,890  $  3,945,897  $  3,681,707  Freight & delivery revenues 1 (206,127) (187,562) (564,595) (566,785) Total revenues excluding freight & delivery$  1,310,379  $  1,122,328  $  3,381,302  $  3,114,922  1Includes freight & delivery to remote distribution sites. CONSTRUCTION PAVING SERVICE REVENUES Revenue from our asphalt construction paving business is recognized over time using the percentage-of-completion method under the cost approach. The percentage of completion is determined by costs incurred to date as a percentage of total costs estimated for the project. Under this approach, recognized contract revenue equals the total estimated contract revenue multiplied by the percentage of completion. Our construction contracts are unit priced, and an account receivable is recorded for amounts invoiced based on actual units produced. Contract assets for estimated earnings in excess of billings, contract assets related to retainage provisions and contract liabilities for billings in excess of costs are immaterial. Variable consideration in our construction paving contracts is immaterial and consists of incentives and penalties based on the quality of work performed. Our construction paving contracts may contain warranty provisions covering defects in equipment, materials, design or workmanship that generally run from nine months to one year after project completion. Due to the nature of our construction paving projects, including contract owner inspections of the work during construction and prior to acceptance, we have not experienced material warranty costs for these short-term warranties. VOLUMETRIC PRODUCTION PAYMENT DEFERRED REVENUES In 2013 and 2012, we sold a percentage interest in certain future aggregates production for net cash proceeds of $226,926,000. These transactions, structured as volumetric production payments (VPPs): relate to eight quarries in Georgia and South Carolinaprovide the purchaser solely with a nonoperating percentage interest in the subject quarries’ future aggregates productioncontain no minimum annual or cumulative guarantees by us for production or sales volume, nor minimum sales priceare both volume and time limited (we expect the transactions will last approximately 20 years, limited by volume rather than time) We are the exclusive sales agent for, and transmit quarterly to the purchaser the proceeds from the sale of, the purchaser’s share of aggregates production. Our consolidated total revenues exclude the revenue from the sale of the purchaser’s share of aggregates. The proceeds we received from the sale of the percentage interest were recorded as deferred revenue on the balance sheet. We recognize revenue on a unit-of-sales basis (as we sell the purchaser’s share of production) relative to the volume limitations of the transactions. Given the nature of the risks and potential rewards assumed by the buyer, the transactions do not reflect financing activities. Reconciliation of the VPP deferred revenue balances (current and noncurrent) is as follows: Three Months Ended Nine Months Ended September 30 September 30in thousands2021 2020 2021 2020 Deferred Revenue Balance at beginning of period$     174,076  $     181,963  $     177,962  $     185,339  Revenue recognized from deferred revenue (2,022) (2,046) (5,908) (5,422) Balance at end of period$     172,054  $     179,917  $     172,054  $     179,917  Based on expected sales from the specified quarries, we expect to recognize $7,500,000 of VPP deferred revenue as income during the 12-month period ending September 30, 2022 (reflected in other current liabilities in our September 30, 2021 Condensed Consolidated Balance Sheet).