Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Operating activities
Net earnings (loss)	$ 49,373	$ (107,733)	$ 117,843
Adjustments to reconcile net earnings (loss) to net cash provided by operating activities:
Depreciation and amortization	159,363	176,169	179,455
(Gain) loss on disposal of property and equipment	(4,054)	(86)	(195)
Accretion of interest on convertible debentures	4,610	4,264	3,943
Inventory write-offs for obsolescence	22,619	21,384	21,394
Impairment of goodwill and long-lived assets	1,559	62,980	0
U.S. pension settlement charges	79,321	0	15,588
Pensions and other postretirement benefits, net of contributions	(3,282)	(3,543)	(16,145)
Gain on early extinguishment of debt	(4,597)	0	0
Deferred income taxes	(2,519)	118,447	15,663
Other	(2,220)	698	(2,269)
Net change in operating assets and liabilities, net of effects of businesses acquired	(4,206)	(27,249)	(38,240)
Net cash provided by operating activities	295,967	245,331	297,037
Investing activities
Capital expenditures	(134,635)	(147,142)	(156,974)
Proceeds from sale of property and equipment	5,701	2,049	2,889
Purchase and deposits for businesses, net of cash acquired	0	(6,750)	(197,986)
Purchase of short-term investments	(555,250)	(486,949)	(495,762)
Maturity of short-term investments	532,601	345,397	485,306
Sale of investments	0	503	13,658
Sale of other investments	0	400	0
Other investing activities	2,942	(4,884)	617
Net cash used in investing activities	(148,641)	(297,376)	(348,252)
Financing activities
Debt issuance costs	0	(3,693)	0
Principal payments on long-term debt and capital leases	(34,044)	0	(11)
Net (payments) proceeds on revolving credit lines	(47,000)	(10,000)	86,000
Common stock repurchases	(23,159)	0	0
Net changes in short-term borrowings	(723)	(14)	16
Distributions to noncontrolling interests	(707)	(725)	(547)
Acquisition of noncontrolling interests	0	0	(21,067)
Proceeds from stock options exercised	356	0	50
Excess tax benefit from RSUs vested	0	21	0
Other financing activities	0	0	(1,324)
Net cash provided by (used in) financing activities	(142,002)	(49,828)	27,729
Effect of exchange rate changes on cash and cash equivalents	(9,050)	(14,792)	(24,690)
Net decrease in cash and cash equivalents from continuing activities	(3,726)	(116,665)	(48,176)
Cash and cash equivalents at beginning of year	475,507	592,172	640,348
Cash and cash equivalents at end of year	471,781	475,507	592,172
Common Stock [Member]
Financing activities
Dividends and Interest Paid	(33,693)	(32,506)	(32,477)
Class B Convertible Common Stock [Member]
Financing activities
Dividends and Interest Paid	$ (3,032)	$ (2,911)	$ (2,911)