Reportable Operating Segments (Tables)

12 Months Ended

Dec. 31, 2014

Reportable Operating Segments

Schedule of revenue by segment

	Year Ended December 31,
	2014				2013				2012
Business Segment	Revenue		% of Revenue		Revenue		% of Revenue		Revenue		% of Revenue
West	$	964,093	46.2	%	$	1,151,433	59.2	%	$	832,860	54.0	%
East	489,926		23.5	%	430,438		22.1	%	469,963		30.5	%
Energy	632,175		30.3	%	362,349		18.7	%	238,911		15.5	%
Total	$	2,086,194	100.0	%	$	1,944,220	100.0	%	$	1,541,734	100.0	%

Schedule of gross profit by segment

	Year Ended December 31,
	2014				2013				2012
Business Segment	Gross Profit		% of Segment Revenue		Gross Profit		% of Segment Revenue		Gross Profit		% of Segment Revenue
West	$	143,468	14.9	%	$	190,747	16.6	%	$	119,328	14.3	%
East	25,749		5.3	%	24,309		5.6	%	40,185		8.6	%
Energy	66,823		10.6	%	40,959		11.3	%	33,197		13.9	%
Total	$	236,040	11.3	%	$	256,015	13.2	%	$	192,710	12.5	%

Schedule of amount of goodwill recorded by segment

Segment	2014		2013
West	$	45,239	$	45,239
East	43,267		43,267
Energy	30,904		30,120
Total	$	119,410	$	118,626