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Segment Information | 3 Months Ended
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Mar. 31, 2017
Segment Reporting [Abstract] |
Segment Information | Segment Information Our reportable segments reflect certain reclassifications of prior year amounts from our United States mechanical construction and facilities services segment to our United States building services segment due to changes in our internal reporting structure. We have the following reportable segments which provide services associated with the design, integration, installation, start-up, operation and maintenance of various systems: (a) United States electrical construction and facilities services (involving systems for electrical power transmission and distribution; premises electrical and lighting systems; process instrumentation in the refining, chemical process, food process and mining industries; low-voltage systems, such as fire alarm, security and process control; voice and data communication; roadway and transit lighting; and fiber optic lines); (b) United States mechanical construction and facilities services (involving systems for heating, ventilation, air conditioning, refrigeration and clean-room process ventilation; fire protection; plumbing, process and high-purity piping; controls and filtration; water and wastewater treatment; central plant heating and cooling; cranes and rigging; millwrighting; and steel fabrication, erection and welding); (c) United States building services; (d) United States industrial services; and (e) United Kingdom building services. The “United States building services” and “United Kingdom building services” segments principally consist of those operations which provide a portfolio of services needed to support the operation and maintenance of our customers’ facilities, including commercial and government site-based operations and maintenance; facility maintenance and services, including reception, security and catering services; outage services to utilities and industrial plants; military base operations support services; mobile maintenance and services; floor care and janitorial services; landscaping, lot sweeping and snow removal; facilities management; vendor management; call center services; installation and support for building systems; program development, management and maintenance for energy systems; technical consulting and diagnostic services; infrastructure and building projects for federal, state and local governmental agencies and bodies; and small modification and retrofit projects, which services are not generally related to customers’ construction programs. The “United States industrial services” segment principally consists of those operations which provide industrial maintenance and services, including those for refineries and petrochemical plants, including on-site repairs, maintenance and service of heat exchangers, towers, vessels and piping; design, manufacturing, repair and hydro blast cleaning of shell and tube heat exchangers and related equipment; refinery turnaround planning and engineering services; specialty welding services; overhaul and maintenance of critical process units in refineries and petrochemical plants; and specialty technical services for refineries and petrochemical plants. The following tables present information about industry segments and geographic areas for the three months ended March 31, 2017 and 2016 (in thousands):
| For the three months ended March 31,
| 2017 |  | 2016
Revenues from unrelated entities: |  |  |
United States electrical construction and facilities services | $ | 443,016 |  |  | $ | 348,289 |
United States mechanical construction and facilities services | 671,129 |  |  | 608,428 |
United States building services | 440,030 |  |  | 443,113 |
United States industrial services | 258,539 |  |  | 257,504 |
Total United States operations | 1,812,714 |  |  | 1,657,334 |
United Kingdom building services | 79,018 |  |  | 87,636 |
Total worldwide operations | $ | 1,891,732 |  |  | $ | 1,744,970 |
Total revenues: |  |  |
United States electrical construction and facilities services | $ | 444,016 |  |  | $ | 354,104 |
United States mechanical construction and facilities services | 679,391 |  |  | 611,770 |
United States building services | 454,944 |  |  | 455,797 |
United States industrial services | 258,905 |  |  | 257,870 |
Less intersegment revenues | (24,542 | ) |  | (22,207 | )
Total United States operations | 1,812,714 |  |  | 1,657,334 |
United Kingdom building services | 79,018 |  |  | 87,636 |
Total worldwide operations | $ | 1,891,732 |  |  | $ | 1,744,970 |
NOTE 13 Segment Information - (Continued)
| For the three months ended March 31,
| 2017 |  | 2016
Operating income (loss): |  |  |
United States electrical construction and facilities services | $ | 31,034 |  |  | $ | 16,707 |
United States mechanical construction and facilities services | 40,433 |  |  | 23,781 |
United States building services | 14,209 |  |  | 13,998 |
United States industrial services | 17,044 |  |  | 18,866 |
Total United States operations | 102,720 |  |  | 73,352 |
United Kingdom building services | 1,679 |  |  | 3,311 |
Corporate administration | (21,060 | ) |  | (20,957 | )
Restructuring expenses | (565 | ) |  | (91 | )
Total worldwide operations | 82,774 |  |  | 55,615 |
Other corporate items: |  |  |
Interest expense | (3,071 | ) |  | (2,376 | )
Interest income | 257 |  |  | 165 |
Income from continuing operations before income taxes | $ | 79,960 |  |  | $ | 53,404 |
| March 31, 2017 |  | December 31, 2016
Total assets: |  |  |
United States electrical construction and facilities services | $ | 617,529 |  |  | $ | 631,581 |
United States mechanical construction and facilities services | 958,733 |  |  | 954,633 |
United States building services | 798,606 |  |  | 753,434 |
United States industrial services | 901,420 |  |  | 850,434 |
Total United States operations | 3,276,288 |  |  | 3,190,082 |
United Kingdom building services | 114,951 |  |  | 105,081 |
Corporate administration | 413,923 |  |  | 557,275 |
Total worldwide operations | $ | 3,805,162 |  |  | $ | 3,852,438 |

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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 -SubTopic 10 -Section 50 -Paragraph 34 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8981-108599 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e9038-108599 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8971-108599 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8595-108599 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8380-108599 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8933-108599 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 26 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8844-108599 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 35 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8984-108599 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 40 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e9031-108599 Reference 10: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 42 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e9054-108599 Reference 11: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8538-108599 Reference 12: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 29 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8864-108599 Reference 13: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 31 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8924-108599 Reference 14: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8906-108599 + Details
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