Reportable Segments (Tables)

6 Months Ended

Jun. 30, 2018

Reportable Segments

Schedule of revenue by segment

Revenue by segment for the three and six months ended June 30, 2018 and 2017 were as follows (in thousands):

	For the three months ended June 30,
	2018			2017
			% of			% of
			Total			Total
Segment	Revenue		Revenue	Revenue		Revenue
Power	$	167,001	25.7%	$	157,773	25.0%
Pipeline		90,605	14.0%		134,623	21.3%
Utilities		228,852	35.3%		212,942	33.8%
Transmission (1)		42,454	6.5%		—	0.0%
Civil		119,875	18.5%		125,827	19.9%
Total	$	648,787	100.0%	$	631,165	100.0%

(1) Represents results from the June 1, 2018 acquisition date of Willbros to June 30, 2018.

	For the six months ended June 30,
	2018			2017
			% of			% of
			Total			Total
Segment	Revenue		Revenue	Revenue		Revenue
Power	$	333,556	28.9%	$	289,013	24.2%
Pipeline		148,188	12.9%		318,068	26.7%
Utilities		395,562	34.3%		329,922	27.7%
Transmission (1)		42,454	3.7%		—	0.0%
Civil		233,146	20.2%		255,664	21.4%
Total	$	1,152,906	100.0%	$	1,192,667	100.0%

(1) Represents results from the June 1, 2018 acquisition date of Willbros to June 30, 2018.

Schedule of gross profit by segment

Gross profit by segment for the three and six months ended June 30, 2018 and 2017 were as follows (in thousands):

	For the three months ended June 30,
	2018			2017
			% of			% of
			Segment			Segment
Segment	Gross Profit		Revenue	Gross Profit		Revenue
Power	$	20,526	12.3%	$	18,132	11.5%
Pipeline		10,678	11.8%		39,366	29.2%
Utilities		34,564	15.1%		32,347	15.2%
Transmission (1)		5,721	13.5%		—	0.0%
Civil		(70)	(0.1%)		(5,362)	(4.3%)
Total	$	71,419	11.0%	$	84,483	13.4%

(1) Represents results from the June 1, 2018 acquisition date of Willbros to June 30, 2018.

	For the six months ended June 30,
	2018			2017
			% of			% of
			Segment			Segment
Segment	Gross Profit		Revenue	Gross Profit		Revenue
Power	$	44,597	13.4%	$	33,656	11.6%
Pipeline		18,569	12.5%		67,491	21.2%
Utilities		43,615	11.0%		40,620	12.3%
Transmission (1)		5,721	13.5%		—	0.0%
Civil		3,477	1.5%		(2,231)	(0.9%)
Total	$	115,979	10.1%	$	139,536	11.7%

(1) Represents results from the June 1, 2018 acquisition date of Willbros to June 30, 2018.