Revenue Recognition - Additional Information (Detail)		3 Months Ended		6 Months Ended
		Jun. 30, 2016 USD ($)	Jun. 30, 2015 USD ($)	Jun. 30, 2016 USD ($) Project	Jun. 30, 2015 USD ($)
Revenue Recognition Multiple Deliverable Arrangements [Line Items]
Unapproved change orders		$ 122,000,000	$ 159,000,000	$ 122,000,000	$ 159,000,000
Revenues	[1]	706,627,000	1,046,537,000	1,435,659,000	1,597,000,000
Cost of operations		595,442,000	925,522,000	1,211,475,000	1,400,981,000
MEA [Member] | Unconsolidated joint ventures [Member]
Revenue Recognition Multiple Deliverable Arrangements [Line Items]
Revenues		0	0
Cost of operations		0	0
MEA [Member] | Claims Revenue [Member]
Revenue Recognition Multiple Deliverable Arrangements [Line Items]
Revenues				16,000,000	7,000,000
Cost of operations				16,000,000	7,000,000
Backlog [Member]
Revenue Recognition Multiple Deliverable Arrangements [Line Items]
Unapproved change orders		$ 24,000,000	$ 38,000,000	$ 24,000,000	$ 38,000,000
Active Projects [Member]
Revenue Recognition Multiple Deliverable Arrangements [Line Items]
Number of projects accounted under deferred profit recognition policy | Project				0

[1] Intersegment transactions included in revenues were not significant for either of the periods presented.