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Segment Information | 12 Months Ended
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Dec. 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, healthcare, utility, and institutional customers through approximately 100 operating subsidiaries. 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. We refer to our United States electrical construction and facilities services segment and our United States mechanical construction and facilities services segment together as our United States construction segments. 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. NOTE 18 - SEGMENT INFORMATION (Continued) The following tables present financial information for each of our reportable segments for the years ended December 31, 2022, 2021, and 2020 (in thousands):
| 2022 |  | 2021 |  | 2020
Revenues from unrelated entities: |  |  |  |  |
United States electrical construction and facilities services | $ | 2,433,114 |  |  | $ | 2,029,893 |  |  | $ | 1,829,979 |
United States mechanical construction and facilities services | 4,326,674 |  |  | 3,952,586 |  |  | 3,516,789 |
United States building services | 2,720,487 |  |  | 2,424,743 |  |  | 2,078,835 |
United States industrial services | 1,118,767 |  |  | 986,407 |  |  | 940,895 |
Total United States operations | 10,599,042 |  |  | 9,393,629 |  |  | 8,366,498 |
United Kingdom building services | 477,078 |  |  | 509,951 |  |  | 430,563 |
Total operations | $ | 11,076,120 |  |  | $ | 9,903,580 |  |  | $ | 8,797,061 |
| 2022 |  | 2021 |  | 2020
Total revenues: |  |  |  |  |
United States electrical construction and facilities services | $ | 2,438,916 |  |  | $ | 2,033,863 |  |  | $ | 1,836,370 |
United States mechanical construction and facilities services | 4,373,050 |  |  | 3,966,123 |  |  | 3,529,880 |
United States building services | 2,821,649 |  |  | 2,523,180 |  |  | 2,161,487 |
United States industrial services | 1,175,469 |  |  | 1,021,217 |  |  | 956,373 |
Less intersegment revenues | (210,042) |  |  | (150,754) |  |  | (117,612) |
Total United States operations | 10,599,042 |  |  | 9,393,629 |  |  | 8,366,498 |
United Kingdom building services | 477,078 |  |  | 509,951 |  |  | 430,563 |
Total operations | $ | 11,076,120 |  |  | $ | 9,903,580 |  |  | $ | 8,797,061 |
| 2022 |  | 2021 |  | 2020
Operating income (loss): |  |  |  |  |
United States electrical construction and facilities services | $ | 148,728 |  |  | $ | 169,355 |  |  | $ | 162,538 |
United States mechanical construction and facilities services | 332,294 |  |  | 314,420 |  |  | 290,444 |
United States building services | 144,670 |  |  | 122,724 |  |  | 115,523 |
United States industrial services | 19,787 |  |  | (1,666) |  |  | 1,175 |
Total United States operations | 645,479 |  |  | 604,833 |  |  | 569,680 |
United Kingdom building services | 29,838 |  |  | 27,998 |  |  | 20,660 |
Corporate administration | (110,440) |  |  | (102,031) |  |  | (98,542) |
Restructuring expenses | — |  |  | — |  |  | (2,214) |
Impairment loss on goodwill, identifiable intangible assets, and other long-lived assets | — |  |  | — |  |  | (232,750) |
Total operations | 564,877 |  |  | 530,800 |  |  | 256,834 |
Other items: |  |  |  |  |
Net periodic pension (cost) income | 4,311 |  |  | 3,625 |  |  | 2,980 |
Interest expense | (13,199) |  |  | (6,071) |  |  | (9,009) |
Interest income | 2,761 |  |  | 949 |  |  | 1,521 |
Income before income taxes | $ | 558,750 |  |  | $ | 529,303 |  |  | $ | 252,326 |
NOTE 18 - SEGMENT INFORMATION (Continued)
| 2022 |  | 2021 |  | 2020
Capital expenditures: |  |  |  |  |
United States electrical construction and facilities services | $ | 11,228 |  |  | $ | 4,985 |  |  | $ | 8,679 |
United States mechanical construction and facilities services | 12,004 |  |  | 10,182 |  |  | 11,347 |
United States building services | 13,229 |  |  | 11,465 |  |  | 10,259 |
United States industrial services | 9,905 |  |  | 6,159 |  |  | 9,595 |
Total United States operations | 46,366 |  |  | 32,791 |  |  | 39,880 |
United Kingdom building services | 2,816 |  |  | 3,015 |  |  | 3,693 |
Corporate administration | 107 |  |  | 386 |  |  | 4,396 |
Total operations | $ | 49,289 |  |  | $ | 36,192 |  |  | $ | 47,969 |
| 2022 |  | 2021 |  | 2020
Depreciation and amortization of property, plant and equipment: |  |  |  |  |
United States electrical construction and facilities services | $ | 7,543 |  |  | $ | 7,229 |  |  | $ | 6,734 |
United States mechanical construction and facilities services | 11,556 |  |  | 11,403 |  |  | 10,964 |
United States building services | 12,900 |  |  | 12,041 |  |  | 12,003 |
United States industrial services | 10,888 |  |  | 11,723 |  |  | 12,405 |
Total United States operations | 42,887 |  |  | 42,396 |  |  | 42,106 |
United Kingdom building services | 2,752 |  |  | 3,938 |  |  | 3,046 |
Corporate administration | 1,657 |  |  | 2,013 |  |  | 1,569 |
Total operations | $ | 47,296 |  |  | $ | 48,347 |  |  | $ | 46,721 |
| December 31, 2022 |  | December 31, 2021 |  | December 31, 2020
Contract assets: |  |  |  |  |
United States electrical construction and facilities services | $ | 75,603 |  |  | $ | 48,382 |  |  | $ | 30,986 |
United States mechanical construction and facilities services | 100,109 |  |  | 89,538 |  |  | 67,443 |
United States building services | 56,217 |  |  | 42,382 |  |  | 31,661 |
United States industrial services | 10,727 |  |  | 18,992 |  |  | 11,311 |
Total United States operations | 242,656 |  |  | 199,294 |  |  | 141,401 |
United Kingdom building services | 30,520 |  |  | 30,849 |  |  | 30,555 |
Total operations | $ | 273,176 |  |  | $ | 230,143 |  |  | $ | 171,956 |
| December 31, 2022 |  | December 31, 2021 |  | December 31, 2020
Contract liabilities: |  |  |  |  |
United States electrical construction and facilities services | $ | 271,161 |  |  | $ | 200,966 |  |  | $ | 183,499 |
United States mechanical construction and facilities services | 597,001 |  |  | 388,039 |  |  | 373,957 |
United States building services | 182,273 |  |  | 148,812 |  |  | 117,643 |
United States industrial services | 17,746 |  |  | 16,481 |  |  | 17,304 |
Total United States operations | 1,068,181 |  |  | 754,298 |  |  | 692,403 |
United Kingdom building services | 30,082 |  |  | 33,836 |  |  | 29,849 |
Total operations | $ | 1,098,263 |  |  | $ | 788,134 |  |  | $ | 722,252 |
NOTE 18 - SEGMENT INFORMATION (Continued)
| December 31, 2022 |  | December 31, 2021 |  | December 31, 2020
Long-lived assets: |  |  |  |  |
United States electrical construction and facilities services | $ | 302,448 |  |  | $ | 237,766 |  |  | $ | 177,692 |
United States mechanical construction and facilities services | 519,335 |  |  | 515,741 |  |  | 522,800 |
United States building services | 496,206 |  |  | 498,692 |  |  | 481,733 |
United States industrial services | 341,646 |  |  | 365,563 |  |  | 394,505 |
Total United States operations | 1,659,635 |  |  | 1,617,762 |  |  | 1,576,730 |
United Kingdom building services | 10,320 |  |  | 11,402 |  |  | 12,017 |
Corporate administration | 990 |  |  | 2,535 |  |  | 4,356 |
Total operations | $ | 1,670,945 |  |  | $ | 1,631,699 |  |  | $ | 1,593,103 |
| December 31, 2022 |  | December 31, 2021 |  | December 31, 2020
Total assets: |  |  |  |  |
United States electrical construction and facilities services | $ | 1,078,405 |  |  | $ | 855,417 |  |  | $ | 680,060 |
United States mechanical construction and facilities services | 1,845,518 |  |  | 1,672,546 |  |  | 1,552,567 |
United States building services | 1,196,001 |  |  | 1,089,844 |  |  | 1,022,290 |
United States industrial services | 552,545 |  |  | 589,017 |  |  | 550,513 |
Total United States operations | 4,672,469 |  |  | 4,206,824 |  |  | 3,805,430 |
United Kingdom building services | 255,547 |  |  | 241,740 |  |  | 227,894 |
Corporate administration | 596,591 |  |  | 992,882 |  |  | 1,030,516 |
Total operations | $ | 5,524,607 |  |  | $ | 5,441,446 |  |  | $ | 5,063,840 |

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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 https://asc.fasb.org/extlink&oid=126901519&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 https://asc.fasb.org/extlink&oid=126901519&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 https://asc.fasb.org/extlink&oid=126901519&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 https://asc.fasb.org/extlink&oid=126901519&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 https://asc.fasb.org/extlink&oid=126901519&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 https://asc.fasb.org/extlink&oid=126901519&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 https://asc.fasb.org/extlink&oid=126901519&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 https://asc.fasb.org/extlink&oid=126901519&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 https://asc.fasb.org/extlink&oid=126901519&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 https://asc.fasb.org/extlink&oid=126901519&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 https://asc.fasb.org/extlink&oid=126901519&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 https://asc.fasb.org/extlink&oid=126901519&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 https://asc.fasb.org/extlink&oid=126901519&loc=d3e8721-108599 Reference 14: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -URI https://asc.fasb.org/topic&trid=2134510 + Details
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