Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Operating activities
Net earnings	$ 298,937	$ 123,783	$ 164,790
Adjustments to reconcile net earnings (loss) to net cash provided by operating activities:
Depreciation and amortization	167,037	166,230	164,461
(Gain) loss on disposal of property and equipment	(303)	157	(157)
Accretion of interest on convertible debt instruments	0	13,161	14,146
Inventory write-offs for obsolescence	20,657	22,730	26,494
Pensions and other postretirement benefits, net of contributions	2,106	2,864	(552)
Loss on early extinguishment of debt	0	8,073	2,030
Deferred income taxes	50,613	(12,141)	(23,009)
Other	16,226	3,304	13,341
Change in U.S. transition tax liability	(14,757)	(14,757)	(14,757)
Change in repatriation tax liability	0	(16,258)	(38,814)
Net change in operating assets and liabilities, net of effects of businesses acquired	(83,412)	17,792	(11,529)
Net cash provided by operating activities	457,104	314,938	296,444
Investing activities
Capital expenditures	(218,372)	(123,599)	(156,641)
Proceeds from sale of property and equipment	1,317	403	577
Purchase of businesses, net of cash acquired	(20,847)	(25,852)	(11,862)
Purchase of short-term investments	(140,603)	(293,087)	(111,631)
Maturity of short-term investments	147,893	250,580	81,012
Other investing activities	129	(529)	3,587
Net cash used in investing activities	(230,483)	(192,084)	(194,958)
Financing activities
Issuance costs	0	0	(5,394)
Repurchase of convertible debt instruments	(300)	(151,683)	(27,863)
Net changes in short-term borrowings	0	(114)	(16)
Distributions to noncontrolling interests	(800)	(600)	(600)
Cash withholding taxes paid when shares withheld for vested equity awards	(1,963)	(2,016)	(2,708)
Net cash used in financing activities	(58,814)	(209,382)	(90,025)
Effect of exchange rate changes on cash and cash equivalents	(13,573)	12,269	(3,360)
Net increase (decrease) in cash and cash equivalents	154,234	(74,259)	8,101
Cash and cash equivalents at beginning of year	619,874	694,133	686,032
Cash and cash equivalents at end of year	774,108	619,874	694,133
Common Stock [Member]
Financing activities
Dividends paid	(51,094)	(50,372)	(48,968)
Class B Convertible Common Stock [Member]
Financing activities
Dividends paid	$ (4,657)	$ (4,597)	$ (4,476)