Supplemental Cash Flow Information (Tables)

12 Months Ended

Dec. 31, 2016

Supplemental Cash Flow Elements [Abstract]

Schedule of Effect of Changes in Operating Assets and Liabilities, Net Of Non-Cash Transactions, On Cash Flows From Operating Activities of Continuing Operations

The net effect of changes in operating assets and liabilities, net of non-cash transactions, on cash flows from operating activities of continuing operations is as follows (in thousands):

	Year Ended December 31,
	2016			2015			2014
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	)

Schedule of Additional Supplemental Cash Flow Information

Additional supplemental cash flow information is as follows (in thousands):

	Year Ended December 31,
	2016			2015			2014
Cash (paid) received during the period for —
Interest paid related to continuing operations	$	(12,828	)	$	(7,087	)	$	(3,533	)
Income taxes paid related to continuing operations	$	(121,662	)	$	(130,921	)	$	(223,901	)
Income taxes paid related to discontinued operations	$	(7,260	)	$	(144,076	)	$	(5,286	)
Income tax refunds related to continuing operations	$	7,548		$	23,788		$	7,376