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Revenue | 3 Months Ended
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Mar. 31, 2018
Revenue [Abstract] |
Revenue | (3) Revenue ﻿ Revenue Recognition ﻿ The Company derives revenue from long-term construction contracts with public and private customers primarily in the United States and its territories and in certain other international locations. The Company’s construction contracts are generally each accounted for as a single unit of account (i.e., as a single performance obligation). ﻿ Throughout the execution of construction contracts, the Company and its affiliated entities recognize revenue with the continuous transfer of control to the customer. The customer typically controls the asset under construction by either contractual termination clauses or by the Company’s rights to payment for work already performed on the asset under construction that does not have an alternative use for the Company. ﻿ Because control transfers over time, revenue is recognized to the extent of progress towards completion of the performance obligations. The selection of the method to measure progress towards completion requires judgment and is based on the nature of the products or services provided. The Company generally uses the cost-to-cost method for its contracts, which measures progress towards completion for each performance obligation based on the ratio of costs incurred to date to the total estimated costs at completion for the respective performance obligation. Incurred cost represents work performed, which corresponds with, and thereby best depicts, the transfer of control to the customer. Revenue, including estimated fees or profits, is recorded proportionately as costs are incurred. Cost of operations includes labor, materials, subcontractor costs, and other direct and indirect costs, including depreciation and amortization. ﻿ Due to the nature of the work required to be performed on many of the Company’s performance obligations, estimating total revenue and cost at completion is complex, subject to many variables and requires significant judgment. The estimates used during the contract performance period require judgment and making assumptions as to the occurrence of future events and the likelihood of variable consideration, including the impact of change orders, claims, contract disputes and the achievement of contractual performance criteria, and award or other incentive fees. The Company estimates variable consideration at the most likely amount to which it expects to receive. The Company includes estimated amounts in the transaction price to the extent it is probable that a significant reversal of cumulative revenue recognized will not occur when the uncertainty associated with the variable consideration is resolved. Estimates of variable consideration and determination of whether to include estimated amounts in the transaction price are based largely on an assessment of anticipated performance and all information (historical, current and forecasted) that is reasonably available to management. ﻿ Disaggregation of Revenue ﻿ The following tables disaggregate revenue by end market, customer type and contract type, which the Company believes best depicts how the nature, amount, timing and uncertainty of its revenue and cash flows are affected by economic factors. ﻿
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﻿ |  | Three Months
﻿ |  | Ended March 31,
﻿(in thousands) |  | 2018
﻿Civil segment revenue by end market: |  |  |
﻿Mass transit |  | $ | 150,126
﻿Bridges |  |  | 62,811
﻿Highways |  |  | 17,257
﻿Other |  |  | 32,920
﻿Total Civil segment revenue |  | $ | 263,114
﻿ ﻿
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﻿ |  | Three Months
﻿ |  | Ended March 31,
﻿(in thousands) |  | 2018
﻿Building segment revenue by end market: |  |  |
﻿Office |  | $ | 147,322
﻿Hospitality and gaming |  |  | 81,765
﻿Health care facilities |  |  | 75,081
﻿Municipal and government |  |  | 50,452
﻿Mixed use |  |  | 41,777
﻿Education facilities |  |  | 32,482
﻿Industrial and commercial |  |  | 26,425
﻿Other |  |  | 34,937
﻿Total Building segment revenue |  | $ | 490,241
﻿ ﻿
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﻿ |  | Three Months
﻿ |  | Ended March 31,
﻿(in thousands) |  | 2018
﻿Specialty Contractors segment revenue by end market: |  |  |
﻿Mass transit |  | $ | 75,182
﻿Mixed use |  |  | 47,857
﻿Industrial and commercial |  |  | 39,339
﻿Transportation |  |  | 33,985
﻿Education facilities |  |  | 25,304
﻿Condominiums |  |  | 23,089
﻿Health care facilities |  |  | 16,365
﻿Other |  |  | 13,680
﻿Total Specialty Contractors segment revenue |  | $ | 274,801
﻿ ﻿
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﻿ |  | Three Months Ended March 31, 2018
﻿ |  |  |  |  |  |  |  | Specialty |  |  |
﻿(in thousands) |  | Civil |  | Building |  | Contractors |  | Total
﻿Revenue by customer type: |  |  |  |  |  |  |  |  |  |  |  |
﻿State and local agencies |  | $ | 226,351 |  | $ | 115,986 |  | $ | 106,320 |  | $ | 448,657
﻿Federal agencies |  |  | 9,855 |  |  | 44,311 |  |  | 18,723 |  |  | 72,889
﻿Private owners |  |  | 26,908 |  |  | 329,944 |  |  | 149,758 |  |  | 506,610
﻿Total revenue |  | $ | 263,114 |  | $ | 490,241 |  | $ | 274,801 |  | $ | 1,028,156
﻿ State and local agencies. The Company’s state and local government customers include state transportation departments, metropolitan authorities, cities, municipal agencies, school districts and public universities. Services provided to state and local customers are primarily pursuant to contracts awarded through competitive bidding processes. Construction services for state and local government customers have included mass-transit systems, bridges, highways, judicial and correctional facilities, schools and dormitories, health care facilities, convention centers, parking structures and other municipal buildings. The vast majority of the Company’s civil contracting and building construction services are provided in locations throughout the United States and its territories. ﻿ Federal agencies. The Company’s federal government customers include the U.S. State Department, the U.S. Navy, the U.S. Army Corps of Engineers, the U.S. Air Force and the National Park Service. Services provided to federal agencies are primarily pursuant to contracts for specific or multi-year assignments that involve new construction or infrastructure repairs or improvements. A portion of revenue from federal agencies is derived from projects in overseas locations. ﻿ Private owners. The Company’s private customers include real estate developers, health care companies, technology companies, hospitality and gaming resort owners, Native American sovereign nations, public corporations and private universities. Services are provided to private customers through negotiated contract arrangements, as well as through competitive bids. ﻿ Most federal, state and local government contracts contain provisions that permit the termination of contracts, in whole or in part, for the convenience of the government, among other reasons. ﻿
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﻿ |  | Three Months Ended March 31, 2018
﻿ |  |  |  |  |  |  |  | Specialty |  |  |
﻿(in thousands) |  | Civil |  | Building |  | Contractors |  | Total
﻿Revenue by contract type: |  |  |  |  |  |  |  |  |  |  |  |
﻿Fixed price |  | $ | 183,904 |  | $ | 79,001 |  | $ | 247,424 |  | $ | 510,329
﻿Guaranteed maximum price |  |  | 5,072 |  |  | 262,028 |  |  | 15,579 |  |  | 282,679
﻿Unit price |  |  | 68,754 |  |  | 8,816 |  |  | 6,658 |  |  | 84,228
﻿Cost plus fee and other |  |  | 5,384 |  |  | 140,396 |  |  | 5,140 |  |  | 150,920
﻿Total revenue |  | $ | 263,114 |  | $ | 490,241 |  | $ | 274,801 |  | $ | 1,028,156
﻿ Fixed price. Fixed price or lump sum contracts are most commonly used for projects in the Civil and Specialty Contractors segments and generally commit the Company to provide all of the resources required to complete a project for a fixed sum. Usually, fixed price contracts transfer more risk to the Company, but offer the opportunity for greater profits. Billings on fixed price contracts are typically based on estimated progress against predetermined contractual milestones. ﻿ Guaranteed maximum price (“GMP”). GMP contracts provide for a cost plus fee arrangement up to a maximum agreed upon price. These contracts place risks on the Company for amounts in excess of the GMP, but may permit an opportunity for greater profits than under cost plus fee contracts through sharing agreements with the owner on any cost savings that may be realized. Services provided by our Building segment to various private customers are often performed under GMP contracts. Billings on GMP contracts typically occur on a monthly basis and are based on actual costs incurred plus a negotiated margin. ﻿ Unit price. Unit price contracts are most prevalent for projects in the Civil and Specialty Contractors segments and generally commit the Company to provide an undetermined number of units or components that comprise a project at a fixed price per unit. This approach shifts the risk of estimating the quantity of units required to the project owner, but the risk of increased cost per unit is borne by the Company, unless otherwise allowed for in the contract. Billings on unit price contracts typically occur on a monthly basis and are based on actual quantity of work performed or completed during the billing period. ﻿ Cost plus fee. Cost plus fee contracts are used for many projects in the Building and Specialty Contractors segments. Cost plus fee contracts include cost plus fixed fee contracts and cost plus award fee contracts. Cost plus fixed fee contracts provide for reimbursement of approved project costs plus a fixed fee. Cost plus award fee contracts provide for reimbursement of the project costs plus a base fee, as well as an incentive fee based on cost and/or schedule performance. Cost plus fee contracts serve to minimize the Company’s financial risk, but may also limit profits. Billings on cost plus fee contracts typically occur on a monthly basis based on actual costs incurred plus a negotiated margin. ﻿ Changes in Contract Estimates that Impact Revenue ﻿ Changes to the total estimated contract revenue or cost, either due to unexpected events or revisions to management’s initial estimates, for a given project are recognized in the period in which they are determined. Net revenue recognized during the three months ended March 31, 2018 related to performance obligations satisfied (or partially satisfied) in prior periods was immaterial. ﻿ Remaining Performance Obligations ﻿ Remaining performance obligations represent the transaction price of firm orders for which work has not been performed and excludes unexercised contract options. As of March 31, 2018, the aggregate amounts of the transaction prices allocated to the remaining performance obligations of the Company’s construction contracts are $4.5 billion, $2.2 billion and $1.8 billion, for the Civil, Building and Specialty Contractors segments, respectively. The Company typically recognizes revenue on Civil segment projects over a period of three to five years, whereas for projects in the Building and Specialty Contractors segments, the Company typically recognizes revenue over a period of one to three years.

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- Definition The entire disclosure of revenue from contract with customer to transfer good or service and to transfer nonfinancial asset. Includes, but is not limited to, disaggregation of revenue, credit loss recognized from contract with customer, judgment and change in judgment related to contract with customer, and asset recognized from cost incurred to obtain or fulfill contract with customer. Excludes insurance and lease contracts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -URI http://asc.fasb.org/topic&trid=2122369 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -URI http://asc.fasb.org/topic&trid=49130388 + Details
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