Segment Information (Tables)

6 Months Ended

Jun. 30, 2015

Segment Reporting [Abstract]

Information About Industry Segments And Geographic Areas

The following tables present information about industry segments and geographic areas for the three and six months ended June 30, 2015 and 2014 (in thousands):

	For the three months ended June 30,
	2015			2014
Revenues from unrelated entities:
United States electrical construction and facilities services	$	346,202		$	335,492
United States mechanical construction and facilities services	554,003			538,556
United States building services	435,627			418,142
United States industrial services	225,168			177,232
Total United States operations	1,561,000			1,469,422
United Kingdom building services	91,585			83,496
Total worldwide operations	$	1,652,585		$	1,552,918
Total revenues:
United States electrical construction and facilities services	$	347,448		$	340,155
United States mechanical construction and facilities services	557,815			543,606
United States building services	448,990			427,988
United States industrial services	225,575			177,343
Less intersegment revenues	(18,828		)	(19,670		)
Total United States operations	1,561,000			1,469,422
United Kingdom building services	91,585			83,496
Total worldwide operations	$	1,652,585		$	1,552,918

	For the six months ended June 30,
	2015			2014
Revenues from unrelated entities:
United States electrical construction and facilities services	$	665,196		$	643,628
United States mechanical construction and facilities services	1,065,029			1,051,567
United States building services	875,119			866,186
United States industrial services	457,893			409,190
Total United States operations	3,063,237			2,970,571
United Kingdom building services	178,535			172,886
Total worldwide operations	$	3,241,772		$	3,143,457
Total revenues:
United States electrical construction and facilities services	$	667,686		$	654,952
United States mechanical construction and facilities services	1,071,182			1,062,717
United States building services	898,718			885,952
United States industrial services	458,891			409,817
Less intersegment revenues	(33,240		)	(42,867		)
Total United States operations	3,063,237			2,970,571
United Kingdom building services	178,535			172,886
Total worldwide operations	$	3,241,772		$	3,143,457

	For the three months ended June 30,
	2015			2014
Operating income (loss):
United States electrical construction and facilities services	$	25,277		$	24,841
United States mechanical construction and facilities services	32,364			28,740
United States building services	17,939			13,920
United States industrial services	17,415			12,376
Total United States operations	92,995			79,877
United Kingdom building services	2,834			6,202
Corporate administration	(17,693		)	(16,244		)
Restructuring expenses	(433		)	(176		)
Total worldwide operations	77,703			69,659
Other corporate items:
Interest expense	(2,208		)	(2,242		)
Interest income	182			221
Income from continuing operations before income taxes	$	75,677		$	67,638

	For the six months ended June 30,
	2015			2014
Operating income (loss):
United States electrical construction and facilities services	$	41,951		$	46,496
United States mechanical construction and facilities services	53,265			47,846
United States building services	38,917			34,218
United States industrial services	30,248			35,770
Total United States operations	164,381			164,330
United Kingdom building services	5,212			9,565
Corporate administration	(36,119		)	(31,711		)
Restructuring expenses	(441		)	(401		)
Total worldwide operations	133,033			141,783
Other corporate items:
Interest expense	(4,424		)	(4,490		)
Interest income	358			455
Income from continuing operations before income taxes	$	128,967		$	137,748

	June 30, 2015		December 31, 2014
Total assets:
United States electrical construction and facilities services	$	365,085	$	332,150
United States mechanical construction and facilities services	825,617		793,056
United States building services	743,015		737,082
United States industrial services	939,924		954,018
Total United States operations	2,873,641		2,816,306
United Kingdom building services	142,826		130,340
Corporate administration	401,319		442,321
Total worldwide operations	$	3,417,786	$	3,388,967