Business Segments (Tables)

3 Months Ended

Mar. 31, 2016

Business Segments [Abstract]

Reportable Segments

	Reportable Segments
					Specialty							Consolidated
(in thousands)	Civil			Building	Contractors		Totals		Corporate			Total
Three Months Ended March 31, 2016
Total revenue	$	367,501	$	487,994	$	281,773	$	1,137,268	$	—		$	1,137,268
Elimination of intersegment revenue		(31,643)		(20,256)		—		(51,899)		—			(51,899)
Revenue from external customers	$	335,858	$	467,738	$	281,773	$	1,085,369	$	—		$	1,085,369
Income from construction operations	$	33,665	$	12,450	$	9,413	$	55,528	$	(15,406)	(a)	$	40,122
Three Months Ended March 31, 2015
Total revenue	$	392,876	$	416,063	$	293,017	$	1,101,956	$	—		$	1,101,956
Elimination of intersegment revenue		(18,202)		(17,233)		(56)		(35,491)		—			(35,491)
Revenue from external customers	$	374,674	$	398,830	$	292,961	$	1,066,465	$	—		$	1,066,465
Income from construction operations	$	30,593	$	(2,279)	$	10,524	$	38,838	$	(18,754)	(a)	$	20,084

(a) Consists primarily of corporate general and administrative expenses.

Reconciliation of Segment Results to Consolidated Income Before Income Taxes

	Three Months Ended March 31,
(in thousands)	2016		2015
Income from construction operations	$	40,122	$	20,084
Other income (expense), net		682		(754)
Interest expense		(14,080)		(11,125)
Income before income taxes	$	26,724	$	8,205

Schedule of Assets by Segment

(in thousands)	March 31, 2016		December 31, 2015
Civil	$	1,947,787	$	1,964,038
Building		902,669		795,851
Specialty Contractors		843,379		860,285
Corporate and other (a)		437,647		416,503
Total Assets	$	4,131,482	$	4,036,677

(a) Consists principally of cash and cash equivalents as well as corporate transportation and other equipment.