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, 2022	$ 2,068,204	$ 1,929,240	$ (341,366)	$ 709	$ (503,266)	$ 968,618	$ 14,269
Increase (Decrease) in Stockholders' Equity
Net income (loss)	137,633	137,836					(203)
Foreign currency translation adjustments	23,875	(226)	24,129				(28)
Changes in unrecognized pension gains and related amortization, net of tax	455		455
Changes in derivative gains (losses), net of tax	(5,131)		(5,131)
Stock awards and option exercises	42,214			4	5,821	36,389
Cash dividends declared on common stock	(49,785)	(49,785)
Treasury stock purchased	(29,039)				(29,039)
Ending balance at Jun. 30, 2023	2,188,426	2,017,065	(321,913)	713	(526,484)	1,005,007	14,038
Beginning balance at Mar. 31, 2023	2,127,757	1,958,930	(317,473)	711	(520,329)	990,984	14,934
Increase (Decrease) in Stockholders' Equity
Net income (loss)	83,047	83,072					(25)
Foreign currency translation adjustments	(1,749)		(878)				(871)
Changes in unrecognized pension gains and related amortization, net of tax	202		202
Changes in derivative gains (losses), net of tax	(3,764)		(3,764)
Stock awards and option exercises	17,180			2	3,155	14,023
Cash dividends declared on common stock	(24,937)	(24,937)
Treasury stock purchased	(9,310)				(9,310)
Ending balance at Jun. 30, 2023	2,188,426	2,017,065	(321,913)	713	(526,484)	1,005,007	14,038
Beginning balance at Dec. 31, 2023	2,321,298	2,109,816	(308,734)	717	(539,404)	1,044,429	14,474
Increase (Decrease) in Stockholders' Equity
Net income (loss)	173,391	173,558					(167)
Foreign currency translation adjustments	(66,111)	235	(65,805)				(541)
Changes in unrecognized pension gains and related amortization, net of tax	506		506
Changes in derivative gains (losses), net of tax	5,509		5,509
Stock awards and option exercises	46,988			4	8,853	38,131
Cash dividends declared on common stock	(54,232)	(54,232)
Treasury stock purchased	(17,134)				(17,134)
Ending balance at Jun. 30, 2024	2,410,215	2,229,377	(368,524)	721	(547,685)	1,082,560	13,766
Beginning balance at Mar. 31, 2024	2,362,933	2,165,858	(347,418)	720	(545,630)	1,075,329	14,074
Increase (Decrease) in Stockholders' Equity
Net income (loss)	90,458	90,454					4
Foreign currency translation adjustments	(24,009)	233	(23,930)				(312)
Changes in unrecognized pension gains and related amortization, net of tax	223		223
Changes in derivative gains (losses), net of tax	2,601		2,601
Stock awards and option exercises	10,235			1	3,003	7,231
Cash dividends declared on common stock	(27,168)	(27,168)
Treasury stock purchased	(5,058)				(5,058)
Ending balance at Jun. 30, 2024	$ 2,410,215	$ 2,229,377	$ (368,524)	$ 721	$ (547,685)	$ 1,082,560	$ 13,766