Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Cash flows – Operating activities:
Net earnings, including noncontrolling interests	$ 31,246	$ 61,474
Adjustments to reconcile net earnings to net cash provided (used) by operating activities:
Depreciation	49,169	50,252
Amortization of intangible and other assets	8,467	7,143
Gain on disposition of business	0	(131,294)
Stock-based compensation	8,395	15,743
Foreign currency, asset impairments and other non-cash adjustments	35,037	31,573
Change in assets and liabilities:
Accounts receivable, net	(32,235)	71,078
Inventories, net	(57,414)	(17,277)
Contract assets, net	(48,907)	0
Prepaid expenses and other assets, net	2,353	29,106
Accounts payable	(10,550)	(55,928)
Contract liabilities	(384)	0
Accrued liabilities and income taxes payable	(44,756)	(9,777)
Retirement obligations and other	4,478	(8,624)
Net deferred taxes	(1,636)	3,131
Net cash flows (used) provided by operating activities	(56,737)	46,600
Cash flows – Investing activities:
Capital expenditures	(31,747)	(29,447)
Proceeds from other	908	2,383
Proceeds from disposition of business	0	181,838
Net cash flows (used) provided by investing activities	(30,839)	154,774
Cash flows – Financing activities:
Payments on long-term debt	(30,000)	(30,000)
Proceeds under other financing arrangements	2,253	6,644
Payments under other financing arrangements	(6,282)	(2,690)
Excess tax benefits from stock-based payment arrangements	(2,931)	(6,593)
Payments of dividends	(49,681)	(49,579)
Other	(607)	(244)
Net cash flows used by financing activities	(87,248)	(82,462)
Effect of exchange rate changes on cash	(11,179)	19,087
Net change in cash and cash equivalents	(186,003)	137,999
Cash and cash equivalents at beginning of period	703,445	367,162
Cash and cash equivalents at end of period	$ 517,442	$ 505,161