Reportable Segments (Tables)

12 Months Ended

Dec. 31, 2016

Reportable Segments

Schedule of revenue by segment

	2016			2015			2014
			% of			% of			% of
			Total			Total			Total
Reportable Segment	Revenue		Revenue	Revenue		Revenue	Revenue		Revenue
West	$	1,041,341	52.2%	$	913,626	47.4%	$	964,093	46.2%
East		521,301	26.1%		612,174	31.7%		489,926	23.5%
Energy		434,306	21.7%		403,615	20.9%		632,175	30.3%
Total	$	1,996,948	100.0%	$	1,929,415	100.0%	$	2,086,194	100.0%

Schedule of gross profit by segment

	2016			2015			2014
			% of			% of			% of
Reportable Segment	Gross Profit		Revenue	Gross Profit		Revenue	Gross Profit		Revenue
West	$	145,239	13.9%	$	130,255	14.3%	$	143,468	14.9%
East		(15,938)	(3.1%)		42,523	6.9%		25,749	5.3%
Energy		72,006	16.6%		47,095	11.7%		66,823	10.6%
Total	$	201,307	10.1%	$	219,873	11.4%	$	236,040	11.3%

Schedule of amount of goodwill recorded by segment

Reportable Segment		2016		2015
West	$	45,239	$	45,239
East		40,150		42,866
Energy		41,837		36,056
Total	$	127,226	$	124,161