Segment Information

3 Months Ended

Mar. 31, 2019

Our reportable segments reflect certain reclassifications of prior year amounts from our United States mechanical construction and facilities services segment to our United States industrial 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 processing, food processing 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 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 mechanical 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, 2019 and 2018 (in thousands):



	For the three months ended March 31,
	2019			2018
Revenues from unrelated entities:
United States electrical construction and facilities services	$	528,070		$	454,752
United States mechanical construction and facilities services	752,409			684,750
United States building services	512,079			454,752
United States industrial services	258,645			199,244
Total United States operations	2,051,203			1,793,498
United Kingdom building services	107,525			106,890
Total worldwide operations	$	2,158,728		$	1,900,388

Total revenues:
United States electrical construction and facilities services	$	528,982		$	457,169
United States mechanical construction and facilities services	759,764			691,783
United States building services	530,596			470,099
United States industrial services	259,275			199,817
Less intersegment revenues	(27,414		)	(25,370		)
Total United States operations	2,051,203			1,793,498
United Kingdom building services	107,525			106,890
Total worldwide operations	$	2,158,728		$	1,900,388



	For the three months ended March 31,
	2019			2018
Operating income (loss):
United States electrical construction and facilities services	$	42,951		$	35,851
United States mechanical construction and facilities services	40,985			39,620
United States building services	27,483			17,077
United States industrial services	9,636			3,441
Total United States operations	121,055			95,989
United Kingdom building services	4,141			3,770
Corporate administration	(22,611		)	(21,665		)
Restructuring expenses	(275		)	(90		)
Total worldwide operations	102,310			78,004
Other corporate items:
Net periodic pension (cost) income	406			737
Interest expense, net	(2,823		)	(2,452		)
Income from continuing operations before income taxes	$	99,893		$	76,289



	March 31, 2019		December 31, 2018
Total assets:
United States electrical construction and facilities services	$	737,743	$	702,112
United States mechanical construction and facilities services	1,180,531		1,080,829
United States building services	975,444		846,221
United States industrial services	875,698		864,622
Total United States operations	3,769,416		3,493,784
United Kingdom building services	167,500		146,379
Corporate administration	341,408		448,644
Total worldwide operations	$	4,278,324	$	4,088,807