Supplemental Cash Flow Information - Schedule of Effect of Changes in Operating Assets and Liabilities, Net of Non-Cash Transactions, on Cash Flows from Operating Activities of Continuing Operations (Detail) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Supplemental Cash Flow Elements [Abstract]
Accounts and notes receivable	$ 144,877	$ 150,470	$ (239,159)
Costs and estimated earnings in excess of billings on uncompleted contracts	(152,702)	(49,358)	(73,443)
Inventories	(9,905)	(33,524)	(4,025)
Prepaid expenses and other current assets	25,133	5,899	(35,493)
Accounts payable and accrued expenses and other non-current liabilities	73,452	(2,486)	(60,829)
Billings in excess of costs and estimated earnings on uncompleted contracts	(124,680)	153,017	28,596
Other, net	(13,743)	(11,707)	(4,908)
Net change in operating assets and liabilities, net of non-cash transactions	$ (57,568)	$ 212,311	$ (389,261)

Supplemental Cash Flow Information - Schedule of Effect of Changes in Operating Assets and Liabilities, Net of Non-Cash Transactions, on Cash Flows from Operating Activities of Continuing Operations (Detail) - USD ($)
$ in Thousands

12 Months Ended

Dec. 31, 2016

Dec. 31, 2015

Dec. 31, 2014

Supplemental Cash Flow Elements [Abstract]

Accounts and notes receivable

$ 144,877

$ 150,470

$ (239,159)

Costs and estimated earnings in excess of billings on uncompleted contracts

(152,702)

(49,358)