Condensed Consolidated and Combined Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Cash flows from operating activities:
Net loss	$ (157,691)	$ (52,807)
Non-cash items included in net income (loss):
Depreciation and amortization of long-lived assets	21,465	12,441
Debt issuance cost amortization	764	0
Income of equity method investees	(3,579)	(2,060)
Gains Losses On Disposition Of Assets And Impairments	114	14,481
Provision for (benefit from) deferred taxes	(1,326)	(6,624)
Recognition of losses (gains) for pension and postretirement plans	(600)	29,986
Stock-based compensation charges and excess tax benefits	6,522	10,655
Changes in assets and liabilities, net of effects of acquisitions:
Accounts receivable	6,343	49,476
Contracts in progress and advance billings on contracts	6,704	(21,684)
Inventories	3,381	(4,746)
Income taxes	(899)	(2,437)
Accounts payable	25,454	(36,784)
Accrued and other current liabilities	13,839	3,583
Pension liabilities, accrued postretirement benefits and employee benefits	(13,040)	(8,652)
Other, net	(7,331)	(657)
Net cash from operating activities	(81,687)	(15,829)
Increase (Decrease) in Restricted Cash	(929)	3,014
Payments to Acquire Assets, Investing Activities	0	(26,220)
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of property, plant and equipment	(7,741)	(13,607)
Acquisition of business, net of cash acquired	(52,547)	0
Purchases of available-for-sale securities	(16,320)	(16,743)
Sales and maturities of available-for-sale securities	21,840	11,724
Other	(90)	(562)
Net cash from investing activities	(53,929)	(42,394)
Cash flows from financing activities:
Shares of our common stock returned to treasury stock	(873)	(52,307)
Other	(1,993)	(230)
Net cash from financing activities	103,547	(51,472)
Effects of exchange rate changes on cash	4,049	(4,495)
Cash flows from discontinued operations:
Net increase (decrease) in cash and equivalents	(28,020)	(114,190)
Cash and equivalents, beginning of period	95,887	365,192
Cash and equivalents, end of period	67,867	251,002
US Revolving Credit Facility [Member]
Cash flows from financing activities:
Borrowings under our revolving credit facilities	423,823	0
Proceeds from (Repayments of) Lines of Credit	(315,493)	0
Foreign Revolvers [Member]
Cash flows from financing activities:
Borrowings under our revolving credit facilities	240	1,065
Proceeds from (Repayments of) Lines of Credit	$ (2,157)	$ 0