Reportable Segments (Tables)

9 Months Ended

Sep. 30, 2018

Reportable Segments

Schedule of revenue by segment

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

	For the three months ended September 30,
	2018			2017
			% of			% of
			Total			Total
Segment	Revenue		Revenue	Revenue		Revenue
Power	$	181,822	20.0%	$	154,178	25.3%
Pipeline		213,073	23.4%		84,357	13.9%
Utilities		269,652	29.7%		246,524	40.5%
Transmission		121,526	13.4%		—	0.0%
Civil		122,829	13.5%		123,252	20.3%
Total	$	908,902	100.0%	$	608,311	100.0%

	For the nine months ended September 30,
	2018			2017
			% of			% of
			Total			Total
Segment	Revenue		Revenue	Revenue		Revenue
Power	$	515,378	25.0%	$	443,191	24.6%
Pipeline		361,261	17.5%		402,425	22.4%
Utilities		665,214	32.3%		576,446	32.0%
Transmission (1)		163,980	7.9%		—	0.0%
Civil		355,975	17.3%		378,916	21.0%
Total	$	2,061,808	100.0%	$	1,800,978	100.0%

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

Schedule of gross profit by segment

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

	For the three months ended September 30,
	2018			2017
			% of			% of
			Segment			Segment
Segment	Gross Profit		Revenue	Gross Profit		Revenue
Power	$	32,077	17.6%	$	18,842	12.2%
Pipeline		24,999	11.7%		12,084	14.3%
Utilities		35,348	13.1%		36,081	14.6%
Transmission		13,958	11.5%		—	0.0%
Civil		123	0.1%		3,414	2.8%
Total	$	106,505	11.7%	$	70,421	11.6%

	For the nine months ended September 30,
	2018			2017
			% of			% of
			Segment			Segment
Segment	Gross Profit		Revenue	Gross Profit		Revenue
Power	$	76,674	14.9%	$	52,498	11.8%
Pipeline		43,568	12.1%		79,575	19.8%
Utilities		78,963	11.9%		76,701	13.3%
Transmission (1)		19,679	12.0%		—	0.0%
Civil		3,600	1.0%		1,183	0.3%
Total	$	222,484	10.8%	$	209,957	11.7%

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