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