Consolidated Statements of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Loss	Retained Earnings	Treasury stock, common	Total
Beginning Balance at Dec. 31, 2020	$ 533	$ 282,467		$ 1,594,708	$ (303,379)	$ 1,574,329
Beginning Balance ( In Shares) at Dec. 31, 2020	53,277
Beginning Balance, treasury shares at Dec. 31, 2020					6,628
Comprehensive income				260,344		260,344
Common stock purchased for treasury					$ (797,838)	(797,838)
Common stock acquired, shares					9,199
Restricted shares forfeited, shares					32
Share-based compensation	$ 1	11,525			$ (5,994)	5,532
Share-based compensation, shares	184				56
Exercise of stock options	$ 2	2,678				2,680
Exercise of stock options, shares	176
Ending Balance at Dec. 31, 2021	$ 536	296,670		1,855,052	$ (1,107,211)	1,045,047
Ending Balance ( In shares ) at Dec. 31, 2021	53,637
Ending Balance, treasury shares at Dec. 31, 2021					15,915
Comprehensive income			$ (533)	184,675		184,142
Common stock purchased for treasury					$ (599,587)	(599,587)
Common stock acquired, shares					6,795
Restricted shares forfeited, shares					10
Share-based compensation	$ 2	12,640			$ (4,625)	8,017
Share-based compensation, shares	193				52
Ending Balance at Dec. 31, 2022	$ 538	309,310	(533)	2,039,727	$ (1,711,423)	$ 637,619
Ending Balance ( In shares ) at Dec. 31, 2022	53,830
Ending Balance, treasury shares at Dec. 31, 2022					22,772	22,772
Comprehensive income			476	204,985		$ 205,461
Common stock purchased for treasury					$ (131,939)	(131,939)
Common stock acquired, shares					1,170
Restricted shares forfeited, shares					19
Share-based compensation	$ 2	13,202			$ (6,331)	6,873
Share-based compensation, shares	140				56
Ending Balance at Dec. 31, 2023	$ 540	$ 322,512	$ (57)	$ 2,244,712	$ (1,849,693)	$ 718,014
Ending Balance ( In shares ) at Dec. 31, 2023	53,970
Ending Balance, treasury shares at Dec. 31, 2023					24,017	24,017