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)	83,939	83,952					(13)
Foreign currency translation adjustments	(48,482)		(48,482)				0
Changes in unrecognized pension gains (losses) and related amortization, net of tax	2,706		2,706
Changes in derivative gains (losses), net of tax	520		520
Stock awards and option exercises	34,768			5	9,301	25,462
Cash dividends declared on common stock	(23,441)	(23,441)
Ending balance at Mar. 31, 2021	1,900,795	1,704,336	(326,965)	700	(352,282)	874,623	383
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)	62,371	62,423					(52)
Foreign currency translation adjustments	(23,042)		(23,080)				38
Changes in unrecognized pension gains (losses) and related amortization, net of tax	825		825
Changes in derivative gains (losses), net of tax	(412)		(412)
Stock awards and option exercises	15,004			1	2,319	12,684
Cash dividends declared on common stock	(24,912)	(24,912)
Treasury stock purchased	(15,983)				(15,983)
Ending balance at Mar. 31, 2022	$ 1,998,451	$ 1,826,924	$ (338,708)	$ 705	$ (434,867)	$ 929,218	$ 15,179