CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY - USD ($) $ in Thousands	Total	Retained Earnings	Accumulated Other Comprehensive (Loss) Income	Common Stock Par Value	Treasury Stock	Capital in Excess of Par Value	Non- Controlling Interest
Beginning balance at Dec. 31, 2020	$ 1,850,785	$ 1,643,825	$ (281,709)	$ 695	$ (361,583)	$ 849,161	$ 396
Increase (Decrease) in Stockholders' Equity
Net income (loss)	139,213	139,228					(15)
Foreign currency translation adjustments	(27,373)		(27,373)				0
Changes in unrecognized pension gains and related amortization, net of tax	5,215		5,215
Changes in derivative gains, net of tax	809		809
Stock awards and option exercises	66,429			7	17,201	49,221
Cash dividends declared on common stock	(48,415)	(48,415)
Ending balance at Jun. 30, 2021	1,986,663	1,734,638	(303,058)	702	(344,382)	898,382	381
Beginning balance at Mar. 31, 2021	1,900,795	1,704,336	(326,965)	700	(352,282)	874,623	383
Increase (Decrease) in Stockholders' Equity
Net income (loss)	55,274	55,276					(2)
Foreign currency translation adjustments	21,109		21,109				0
Changes in unrecognized pension gains and related amortization, net of tax	2,509		2,509
Changes in derivative gains, net of tax	289		289
Stock awards and option exercises	31,661			2	7,900	23,759
Cash dividends declared on common stock	(24,974)	(24,974)
Ending balance at Jun. 30, 2021	1,986,663	1,734,638	(303,058)	702	(344,382)	898,382	381
Beginning balance at Dec. 31, 2021	1,984,600	1,789,413	(316,041)	704	(421,203)	916,534	15,193
Increase (Decrease) in Stockholders' Equity
Net income (loss)	125,984	126,048					(64)
Foreign currency translation adjustments	(91,887)		(91,111)				(776)
Changes in unrecognized pension gains and related amortization, net of tax	2,455		2,455
Changes in derivative gains, net of tax	121		121
Stock awards and option exercises	30,106			2	6,741	23,363
Cash dividends declared on common stock	(49,827)	(49,827)
Treasury stock purchased	(53,088)				(53,088)
Ending balance at Jun. 30, 2022	1,948,464	1,865,634	(404,576)	706	(467,550)	939,897	14,353
Beginning balance at Mar. 31, 2022	1,998,451	1,826,924	(338,708)	705	(434,867)	929,218	15,179
Increase (Decrease) in Stockholders' Equity
Net income (loss)	63,613	63,625					(12)
Foreign currency translation adjustments	(68,845)		(68,031)				(814)
Changes in unrecognized pension gains and related amortization, net of tax	1,630		1,630
Changes in derivative gains, net of tax	533		533
Stock awards and option exercises	15,102			1	4,422	10,679
Cash dividends declared on common stock	(24,915)	(24,915)
Treasury stock purchased	(37,105)				(37,105)
Ending balance at Jun. 30, 2022	$ 1,948,464	$ 1,865,634	$ (404,576)	$ 706	$ (467,550)	$ 939,897	$ 14,353