Consolidated Statements Of Equity - USD ($) $ in Thousands		Total	Common Stock	Capital Surplus	Accumulated Other Comprehensive Loss	[1]	Retained Earnings	Treasury Stock	Noncontrolling Interests
Balance at Dec. 31, 2018		$ 1,741,441	$ 601	$ 21,103	$ (87,662)		$ 2,060,440	$ (253,937)	$ 896
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income including noncontrolling interests		325,140					325,140
Other comprehensive income (loss)		(1,626)			(1,626)
Common stock issued under share-based compensation plans		0	3	(3)
Tax withholding for common stock issued under share-based compensation plans		(6,451)		(6,451)
Common stock issued under employee stock purchase plan		6,090		6,090
Common stock dividends		(17,950)					(18,099)
Common stock dividends, accrued dividend shares				149
Distributions to noncontrolling interests		(250)							(250)
Share-based compensation expense		11,386		11,386
Balance at Dec. 31, 2019		2,057,780	604	32,274	(89,288)		2,367,481	(253,937)	646
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income including noncontrolling interests		132,943					132,943
Other comprehensive income (loss)		(19,945)			(19,945)
Cumulative-effect adjustment	[2]	(2,307)					(2,307)
Common stock issued under share-based compensation plans		2	2
Tax withholding for common stock issued under share-based compensation plans		(2,640)		(2,640)
Common stock issued under employee stock purchase plan		6,557		6,557
Common stock dividends		(17,674)					(17,796)
Common stock dividends, accrued dividend shares				122
Repurchases of common stock		(112,553)						(112,553)
Distributions to noncontrolling interests		(70)							(70)
Share-based compensation expense		11,151		11,151
Balance at Dec. 31, 2020		2,053,244	606	47,464	(109,233)		2,480,321	(366,490)	576
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income including noncontrolling interests		383,701					383,532		169
Other comprehensive income (loss)		25,671			25,671
Common stock issued under share-based compensation plans		0	1	(1)
Tax withholding for common stock issued under share-based compensation plans		(4,210)		(4,210)
Common stock issued under employee stock purchase plan		7,328		7,328
Common stock dividends		(28,163)					(28,349)
Common stock dividends, accrued dividend shares				186
Repurchases of common stock		(195,546)						(195,546)
Distributions to noncontrolling interests		(43)							(43)
Share-based compensation expense		11,107		11,107
Balance at Dec. 31, 2021		$ 2,253,089	$ 607	$ 61,874	$ (83,562)		$ 2,835,504	$ (562,036)	$ 702

[1] Represents cumulative foreign currency translation and post retirement liability adjustments of $2.5 million and $(86.1) million, respectively, as of December 31, 2021, $2.9 million and $(112.1) million, respectively, as of December 31, 2020, and $0.8 million and $(90.1) million, respectively, as of December 31, 2019.

[2] Represents adjustment to retained earnings upon the adoption of Accounting Standards Codification Topic 326.