Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Treasury Stock, Common [Member]	Total
Balances at Dec. 31, 2021	$ 1,671	$ 448,217	$ 5,621,103	$ (2,953,175)	$ 3,117,816
Net earnings	0	0	969,351	0	969,351
Cash dividend declared and paid	0	0	(166,724)	0	(166,724)
Purchase of treasury shares	0	0	0	(300,030)	(300,030)
Share-based compensation	0	77,535	0	0	77,535
Restricted share issuances, net of stock repurchased for payroll taxes and other	0	(25,855)	0	(5,325)	(31,180)
Balances at Dec. 31, 2022	1,671	499,897	6,423,730	(3,258,530)	3,666,768
Net earnings	0	0	728,287	0	728,287
Cash dividend declared and paid	0	0	(173,898)	0	(173,898)
Purchase of treasury shares	0	0	0	(159,576)	(159,576)
Share-based compensation	0	79,189	0	0	79,189
Restricted share issuances, net of stock repurchased for payroll taxes and other	0	(29,954)	0	(7,058)	(37,012)
Balances at Dec. 31, 2023	1,671	549,132	6,978,119	(3,425,164)	4,103,758
Net earnings	0	0	570,886	0	570,886
Cash dividend declared and paid	0	0	(175,543)	0	(175,543)
Purchase of treasury shares	0	0	0	(513,924)	(513,924)
Share-based compensation	0	65,686	0	0	65,686
Restricted share issuances, net of stock repurchased for payroll taxes and other	0	(30,873)	0	(5,485)	(36,358)
Balances at Dec. 31, 2024	$ 1,671	$ 583,945	$ 7,373,462	$ (3,944,573)	$ 4,014,505