Revenue (Tables)

6 Months Ended

Jun. 30, 2019

Revenue

Schedule of contract assets

Contract assets consist of the following (in thousands):

	June 30,		December 31,
	2019		2018
Unbilled revenue	$	311,915	$	249,577
Retention receivable		84,805		88,953
Contract materials (not yet installed)		18,422		25,715
	$	415,142	$	364,245

Schedule of contract liabilities

Contract liabilities consist of the following (in thousands):

	June 30,		December 31,
	2019		2018
Deferred revenue	$	192,772	$	182,232
Accrued loss provision		5,013		7,307
	$	197,785	$	189,539

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, 2019
Segment	MSA		Non-MSA		Total
Power	$	43,689	$	128,481	$	172,170
Pipeline		20,153		117,090		137,243
Utilities		172,371		49,941		222,312
Transmission		110,875		24,479		135,354
Civil		1,225		121,625		122,850
Total	$	348,313	$	441,616	$	789,929

	For the six months ended June 30, 2019
Segment	MSA		Non-MSA		Total
Power	$	92,884	$	224,669	$	317,553
Pipeline		42,002		230,055		272,057
Utilities		291,833		76,685		368,518
Transmission		212,598		41,199		253,797
Civil		1,875		237,687		239,562
Total	$	641,192	$	810,295	$	1,451,487

	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, 2019
Segment	Fixed-price		Unit-price		Cost reimbursable (1)		Total
Power	$	105,105	$	4,042	$	63,023	$	172,170
Pipeline		14,109		10,130		113,004		137,243
Utilities		30,120		119,618		72,574		222,312
Transmission		14,251		115,679		5,424		135,354
Civil		19,001		83,905		19,944		122,850
Total	$	182,586	$	333,374	$	273,969	$	789,929

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

	For the six months ended June 30, 2019
Segment	Fixed-price		Unit-price		Cost reimbursable (1)		Total
Power	$	180,248	$	10,655	$	126,650	$	317,553
Pipeline		31,336		10,504		230,217		272,057
Utilities		52,887		187,496		128,135		368,518
Transmission		22,714		221,520		9,563		253,797
Civil		41,686		162,399		35,477		239,562
Total	$	328,871	$	592,574	$	530,042	$	1,451,487

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

	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.