Revenue (Tables)

9 Months Ended

Sep. 30, 2018

Contract assets consist of the following (in thousands):


	September 30,		December 31,
	2018		2017
Unbilled revenue	$	262,510	$	160,092
Retention receivable		91,473		66,586
Contract materials (not yet installed)		28,509		39,224
	$	382,492	$	265,902

Contract liabilities consist of the following (in thousands):

Master Service Agreements (“MSA”) and Non-MSA revenue was as follows (in thousands):


	For the three months ended September 30, 2018
Segment	MSA		Non-MSA		Total
Power	$	48,004	$	133,818	$	181,822
Pipeline		14,986		198,087		213,073
Utilities		227,192		42,460		269,652
Transmission		100,227		21,299		121,526
Civil		—		122,829		122,829
Total	$	390,409	$	518,493	$	908,902


	For the nine months ended September 30, 2018
Segment	MSA		Non-MSA		Total
Power	$	90,074	$	425,304	$	515,378
Pipeline		34,479		326,782		361,261
Utilities		515,295		149,919		665,214
Transmission		135,744		28,236		163,980
Civil		—		355,975		355,975
Total	$	775,592	$	1,286,216	$	2,061,808

Revenue by contract type was as follows (in thousands):


	For the three months ended September 30, 2018
Segment	Fixed-price		Unit-price		Cost reimbursable (1)		Total
Power	$	85,561	$	10,371	$	85,890	$	181,822
Pipeline		41,772		7,924		163,377		213,073
Utilities		42,763		144,611		82,278		269,652
Transmission		20,259		84,646		16,621		121,526
Civil		21,380		90,418		11,031		122,829
Total	$	211,735	$	337,970	$	359,197	$	908,902

(1)

Includes time and material and cost reimbursable plus fee contracts.


	For the nine months ended September 30, 2018
Segment	Fixed-price		Unit-price		Cost reimbursable (1)		Total
Power	$	310,599	$	36,015	$	168,764	$	515,378
Pipeline		82,394		58,247		220,620		361,261
Utilities		148,126		339,225		177,863		665,214
Transmission		28,259		110,103		25,618		163,980
Civil		45,803		269,630		40,542		355,975
Total	$	615,181	$	813,220	$	633,407	$	2,061,808

(1)

Includes time and material and cost reimbursable plus fee contracts.