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Reportable Segments | 12 Months Ended
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Dec. 31, 2017
Reportable Segments |
Reportable Segments | Note 14—Reportable Segments Through the end of the year 2016, we segregated our business into three reportable segments: the Energy segment, the East Construction Services segment and the West Construction Services segment. In the first quarter 2017, we changed our reportable segments in connection with a realignment of our internal organization and management structure. The segment changes reflect the focus of our CODM on the range of services we provide to our end user markets. Our CODM regularly reviews our operating and financial performance based on these segments. The current reportable segments include the Power segment, the Pipeline segment, the Utilities segment, and the Civil segment. Segment information for prior periods has been restated to conform to the new segment presentation. Each of our reportable segments is comprised of similar business units that specialize in services unique to the segment. Driving the new end-user focused segments are differences in the economic characteristics of each segment, the nature of the services provided by each segment; the production processes of each segment; the type or class of customer using the segment’s services; the methods used by the segment to provide the services; and the regulatory environment of each segment’s customers. The classification of revenues and gross profit for segment reporting purposes can at times require judgment on the part of management. Our segments may perform services across industries or perform joint services for customers in multiple industries. To determine reportable segment gross profit, certain allocations, including allocations of shared and indirect costs, such as facility costs, equipment costs and indirect operating expenses were made. The following is a brief description of the reportable segments: The Power segment operates throughout the United States and specializes in a range of services that include full EPC project delivery, turnkey construction, retrofits, upgrades, repairs, outages, and maintenance for entities in the petroleum, petrochemical, water, and other industries. The Pipeline segment operates throughout the United States and specializes in a range of services, including pipeline construction, pipeline maintenance, pipeline facility work, compressor stations, pump stations, metering facilities, and other pipeline related services for entities in the petroleum and petrochemical industries. The Utilities segment operates primarily in California, the Midwest, and the Southeast regions of the United States and specializes in a range of services, including utility line installation and maintenance, gas and electric distribution, streetlight construction, substation work, and fiber optic cable installation. The Civil segment operates primarily in the Southeastern and Gulf Coast regions of the United States and specializes in highway and bridge construction, airport runway and taxiway construction, demolition, heavy earthwork, soil stabilization, mass excavation, and drainage projects. All intersegment revenues and gross profit, which were immaterial, have been eliminated in the following tables. Segment Revenues Revenue by segment for the years ended December 31, 2017, 2016 and 2015 was as follows (in thousands):
|  | 2017 |  | 2016 |  | 2015 |
|  |  |  |  | % of |  |  |  |  | % of |  |  |  |  | % of |
|  |  |  |  | Total |  |  |  |  | Total |  |  |  |  | Total |
Segment |  | Revenue |  | Revenue |  | Revenue |  | Revenue |  | Revenue |  | Revenue |
Power |  | $ | 606,125 |  | 25.5% |  | $ | 478,653 |  | 24.0% |  | $ | 466,292 |  | 24.2% |
Pipeline |  |  | 465,570 |  | 19.5% |  |  | 401,931 |  | 20.1% |  |  | 299,365 |  | 15.5% |
Utilities |  |  | 806,523 |  | 33.9% |  |  | 637,212 |  | 31.9% |  |  | 587,047 |  | 30.4% |
Civil |  |  | 501,777 |  | 21.1% |  |  | 479,152 |  | 24.0% |  |  | 576,711 |  | 29.9% |
Total |  | $ | 2,379,995 |  | 100.0% |  | $ | 1,996,948 |  | 100.0% |  | $ | 1,929,415 |  | 100.0% |
Segment Gross Profit Gross profit by segment for the years ended December 31, 2017, 2016 and 2015 was as follows (in thousands):
|  | 2017 |  | 2016 |  | 2015 |
|  |  |  |  | % of |  |  |  |  | % of |  |  |  |  | % of |
|  |  |  |  | Segment |  |  |  |  | Segment |  |  |  |  |  |
Segment |  | Gross Profit |  | Revenue |  | Gross Profit |  | Revenue |  | Gross Profit |  | Revenue |
Power |  | $ | 65,675 |  | 10.8% |  | $ | 49,807 |  | 10.4% |  | $ | 53,620 |  | 11.5% |
Pipeline |  |  | 92,087 |  | 19.8% |  |  | 68,100 |  | 16.9% |  |  | 24,685 |  | 8.2% |
Utilities |  |  | 113,037 |  | 14.0% |  |  | 100,071 |  | 15.7% |  |  | 96,450 |  | 16.4% |
Civil |  |  | 7,635 |  | 1.5% |  |  | (16,671) |  | (3.5%) |  |  | 45,118 |  | 7.8% |
Total |  | $ | 278,434 |  | 11.7% |  | $ | 201,307 |  | 10.1% |  | $ | 219,873 |  | 11.4% |
Geographic Region — Revenues and Total Assets The majority of our revenues are derived from customers in the United States with approximately 1% generated from sources outside of the United States. At December 31, 2017 and 2016, approximately 1% of total assets were located outside of the United States.

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- Definition The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -URI http://asc.fasb.org/topic&trid=2134510 + Details
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