Segment Information (Tables)

3 Months Ended

Mar. 31, 2014

Segment Reporting [Abstract]

Information About Industry Segments And Geographic Areas

The following tables have been restated in all periods presented to reflect our new reportable segments (see Note 1, "Basis of Presentation" for further information) and represent information about industry segments and geographic areas for the three months ended March 31, 2014 and 2013 (in thousands):

	For the three months ended March 31,
	2014			2013
Revenues from unrelated entities:
United States electrical construction and facilities services	$	308,136		$	307,584
United States mechanical construction and facilities services	513,011			541,117
United States building services	448,044			455,156
United States industrial services	231,958			145,544
Total United States operations	1,501,149			1,449,401
United Kingdom construction and building services	98,236			119,000
Total worldwide operations	$	1,599,385		$	1,568,401
Total revenues:
United States electrical construction and facilities services	$	314,797		$	309,775
United States mechanical construction and facilities services	519,111			551,784
United States building services	457,964			462,390
United States industrial services	232,474			146,061
Less intersegment revenues	(23,197		)	(20,609		)
Total United States operations	1,501,149			1,449,401
United Kingdom construction and building services	98,236			119,000
Total worldwide operations	$	1,599,385		$	1,568,401

	For the three months ended March 31,
	2014			2013
Operating income (loss):
United States electrical construction and facilities services	$	21,655		$	18,940
United States mechanical construction and facilities services	19,106			11,140
United States building services	20,298			12,880
United States industrial services	23,394			22,747
Total United States operations	84,453			65,707
United Kingdom construction and building services	1,297			1,279
Corporate administration	(15,467		)	(14,358		)
Restructuring expenses	(909		)	(1,363		)
Total worldwide operations	69,374			51,265
Other corporate items:
Interest expense	(2,248		)	(1,862		)
Interest income	234			357
Income before income taxes	$	67,360		$	49,760

	March 31, 2014		December 31, 2013
Total assets:
United States electrical construction and facilities services	$	321,182	$	329,742
United States mechanical construction and facilities services	767,811		795,256
United States building services	762,331		756,785
United States industrial services	974,853		940,916
Total United States operations	2,826,177		2,822,699
United Kingdom construction and building services	160,767		160,828
Corporate administration	420,572		482,388
Total worldwide operations	$	3,407,516	$	3,465,915