CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands		9 Months Ended
		Sep. 30, 2017	Sep. 30, 2016
Cash flows from operating activities:
Net income		$ 153,580	$ 35,753
Non-cash items included in net income:
Depreciation and amortization		78,032	76,755
Impairment loss			44,069
Stock-based compensation charges		19,543	14,011
Loss from investments in Unconsolidated Affiliates		11,495	2,844
Other non-cash items		17,525	7,782
Changes in operating assets and liabilities that provided (used) cash:
Accounts receivable		119,623	(29,661)
Contracts in progress, net of Advance billings on contracts		(673,420)	53,608
Accounts payable		338,906	(110,196)
Accrued and other current liabilities		79,866	(13,426)
Other assets and liabilities, net		(9,648)	44,060
Total cash provided by operating activities		135,502	125,599
Cash flows from investing activities:
Purchases of property, plant and equipment	[1]	(97,106)	(197,393)
Proceeds from asset dispositions		55,391	1,123
Investments in Unconsolidated Affiliates		(2,769)	(4,105)
Total cash used in investing activities		(44,484)	(200,375)
Cash flows from financing activities:
Repayment of debt		(230,715)	(93,755)
Payment of debt issuance cost		(20,564)	(8,256)
Acquisition of Noncontrolling interest		(10,652)
Repurchase of common stock		(7,126)	(3,909)
Total cash used in financing activities		(269,057)	(105,920)
Effects of exchange rate changes on cash, cash equivalents and restricted cash		279	(861)
Net decrease in cash, cash equivalents and restricted cash		(177,760)	(181,557)
Cash, cash equivalents and restricted cash at beginning of period		612,333	781,645
Cash, cash equivalents and restricted cash at end of period		$ 434,573	$ 600,088

[1] Corporate and Other capital expenditures in the first nine months of 2017 include the purchase of the Amazon, a pipelay and construction vessel. Following the purchase we sold this vessel to an unrelated third party and simultaneously entered into an 11-year bareboat charter agreement, see Note 8, Sale Leaseback.