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Segment Information | 3 Months Ended
--- | ---
Mar. 31, 2022
Segment Reporting [Abstract] |
Segment Information | Segment Information We are one of the largest specialty contractors in the United States and a leading provider of electrical and mechanical construction and facilities services, building services, and industrial services. Our services are provided to a broad range of commercial, industrial, utility, and institutional customers through approximately 90 operating subsidiaries, which specialize principally in providing construction services relating to electrical and mechanical systems in all types of facilities and in providing various services relating to the operating, maintenance, and management of those facilities. Such operating subsidiaries are organized into the following reportable segments: •United States electrical construction and facilities services; •United States mechanical construction and facilities services; •United States building services; •United States industrial services; and •United Kingdom building services. For a more complete description of our operations, refer to Item 1. Business of our Form 10-K for the year ended December 31, 2021. Our reportable segments and related disclosures reflect certain reclassifications of prior year amounts from our United States mechanical construction and facilities services segment to our United States building services segment, and from our United States building services segment to our United States construction segments, due to changes in our internal reporting structure aimed at realigning our service offerings. The following tables present financial information for each of our reportable segments for the three months ended March 31, 2022 and 2021 (in thousands):
| For the three months ended March 31,
| 2022 |  | 2021
Revenues from unrelated entities: |  |  |
United States electrical construction and facilities services | $ | 522,030 |  |  | $ | 459,395 |
United States mechanical construction and facilities services | 1,000,470 |  |  | 914,501 |
United States building services | 627,801 |  |  | 568,036 |
United States industrial services | 310,751 |  |  | 235,382 |
Total United States operations | 2,461,052 |  |  | 2,177,314 |
United Kingdom building services | 131,497 |  |  | 126,735 |
Total operations | $ | 2,592,549 |  |  | $ | 2,304,049 |
Total revenues: |  |  |
United States electrical construction and facilities services | $ | 523,414 |  |  | $ | 460,775 |
United States mechanical construction and facilities services | 1,004,856 |  |  | 916,722 |
United States building services | 652,231 |  |  | 590,445 |
United States industrial services | 324,501 |  |  | 245,928 |
Less intersegment revenues | (43,950) |  |  | (36,556) |
Total United States operations | 2,461,052 |  |  | 2,177,314 |
United Kingdom building services | 131,497 |  |  | 126,735 |
Total operations | $ | 2,592,549 |  |  | $ | 2,304,049 |
NOTE 14 - Segment Information (continued)
| For the three months ended March 31,
| 2022 |  | 2021
Operating income (loss): |  |  |
United States electrical construction and facilities services | $ | 19,993 |  |  | $ | 40,252 |
United States mechanical construction and facilities services | 58,674 |  |  | 63,176 |
United States building services | 23,922 |  |  | 31,120 |
United States industrial services | 13,258 |  |  | (2,443) |
Total United States operations | 115,847 |  |  | 132,105 |
United Kingdom building services | 10,588 |  |  | 9,411 |
Corporate administration | (26,478) |  |  | (24,512) |
Total operations | 99,957 |  |  | 117,004 |
Other items: |  |  |
Net periodic pension (cost) income | 1,169 |  |  | 908 |
Interest expense, net | (1,289) |  |  | (1,363) |
Income before income taxes | $ | 99,837 |  |  | $ | 116,549 |
| March 31, 2022 |  | December 31, 2021
Total assets: |  |  |
United States electrical construction and facilities services | $ | 847,786 |  |  | $ | 855,417 |
United States mechanical construction and facilities services | 1,698,791 |  |  | 1,672,546 |
United States building services | 1,132,080 |  |  | 1,089,844 |
United States industrial services | 659,795 |  |  | 589,017 |
Total United States operations | 4,338,452 |  |  | 4,206,824 |
United Kingdom building services | 259,522 |  |  | 241,740 |
Corporate administration | 633,180 |  |  | 992,882 |
Total operations | $ | 5,231,154 |  |  | $ | 5,441,446 |

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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/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 31 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8924-108599 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 34 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8981-108599 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8721-108599 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 40 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e9031-108599 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8933-108599 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8933-108599 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 26 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8844-108599 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e9038-108599 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8933-108599 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8736-108599 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 42 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e9054-108599 Reference 12: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8657-108599 Reference 13: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8721-108599 Reference 14: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -URI http://asc.fasb.org/topic&trid=2134510 + Details
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