Revenue (Tables)

6 Months Ended

Jun. 30, 2018

Revenue

Schedule of contract assets

Contract assets consist of the following (in thousands):

	June 30,		December 31,
	2018		2017
Unbilled revenue	$	243,478	$	160,092
Retention receivable		84,623		66,586
Contract materials (not yet installed)		32,609		39,224
	$	360,710	$	265,902

Schedule of contract liabilities

Contract liabilities consist of the following (in thousands):

	June 30,		December 31,
	2018		2017
Deferred revenue	$	181,053	$	159,310
Accrued loss provision		14,273		10,067
	$	195,326	$	169,377

Schedule of revenue disaggregation by various categories

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

	For the three months ended June 30, 2018
Segment	MSA		Non-MSA		Total
Power	$	22,672	$	144,329	$	167,001
Pipeline		12,213		78,392		90,605
Utilities		168,336		60,516		228,852
Transmission		35,517		6,937		42,454
Civil		—		119,875		119,875
Total	$	238,738	$	410,049	$	648,787

	For the six months ended June 30, 2018
Segment	MSA		Non-MSA		Total
Power	$	42,070	$	291,486	$	333,556
Pipeline		19,493		128,695		148,188
Utilities		288,103		107,459		395,562
Transmission		35,517		6,937		42,454
Civil		—		233,146		233,146
Total	$	385,183	$	767,723	$	1,152,906

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

	For the three months ended June 30, 2018
Segment	Fixed-price		Unit-price		Cost reimbursable (1)		Total
Power	$	108,383	$	14,532	$	44,086	$	167,001
Pipeline		28,102		31,678		30,825		90,605
Utilities		41,299		127,863		59,690		228,852
Transmission		8,000		25,457		8,997		42,454
Civil		14,780		92,132		12,963		119,875
Total	$	200,564	$	291,662	$	156,561	$	648,787

(1) Includes time and material and cost reimbursable plus fee contracts.

	For the six months ended June 30, 2018
Segment	Fixed-price		Unit-price		Cost reimbursable (1)		Total
Power	$	225,038	$	25,644	$	82,874	$	333,556
Pipeline		40,622		50,323		57,243		148,188
Utilities		105,363		194,614		95,585		395,562
Transmission		8,000		25,457		8,997		42,454
Civil		24,423		179,212		29,511		233,146
Total	$	403,446	$	475,250	$	274,210	$	1,152,906

(1) Includes time and material and cost reimbursable plus fee contracts.