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, 2022	$ 538	$ 309,310	$ (533)	$ 2,039,727	$ (1,711,423)	$ 637,619
Beginning Balance ( In Shares) at Dec. 31, 2022	53,830
Beginning Balance, treasury shares at Dec. 31, 2022					22,772
Comprehensive income			119	59,564		59,683
Common stock purchased for treasury					$ (35,090)	(35,090)
Common stock acquired, shares					310
Restricted shares forfeited, shares					5
Share-based compensation	$ 2	3,367			$ (6,331)	(2,962)
Share-based compensation, shares	136				56
Ending Balance at Mar. 31, 2023	$ 540	312,677	(414)	2,099,291	$ (1,752,844)	659,250
Ending Balance ( In shares ) at Mar. 31, 2023	53,966
Ending Balance, treasury shares at Mar. 31, 2023					23,143
Beginning Balance at Dec. 31, 2022	$ 538	309,310	(533)	2,039,727	$ (1,711,423)	637,619
Beginning Balance ( In Shares) at Dec. 31, 2022	53,830
Beginning Balance, treasury shares at Dec. 31, 2022					22,772
Comprehensive income						88,380
Ending Balance at Jun. 30, 2023	$ 540	315,930	(690)	2,128,264	$ (1,798,619)	645,425
Ending Balance ( In shares ) at Jun. 30, 2023	53,970
Ending Balance, treasury shares at Jun. 30, 2023					23,572
Beginning Balance at Mar. 31, 2023	$ 540	312,677	(414)	2,099,291	$ (1,752,844)	659,250
Beginning Balance ( In Shares) at Mar. 31, 2023	53,966
Beginning Balance, treasury shares at Mar. 31, 2023					23,143
Comprehensive income			(276)	28,973		28,697
Common stock purchased for treasury					$ (45,775)	(45,775)
Common stock acquired, shares					419
Restricted shares forfeited, shares					10
Share-based compensation		3,253				3,253
Share-based compensation, shares	4
Ending Balance at Jun. 30, 2023	$ 540	315,930	(690)	2,128,264	$ (1,798,619)	645,425
Ending Balance ( In shares ) at Jun. 30, 2023	53,970
Ending Balance, treasury shares at Jun. 30, 2023					23,572
Beginning Balance at Dec. 31, 2023	$ 540	322,512	(57)	2,244,712	$ (1,849,693)	$ 718,014
Beginning Balance ( In Shares) at Dec. 31, 2023	53,970
Beginning Balance, treasury shares at Dec. 31, 2023					24,017	24,017
Comprehensive income			(56)	68,010		$ 67,954
Common stock purchased for treasury					$ (22,558)	(22,558)
Common stock acquired, shares					172
Restricted shares forfeited, shares					4
Share-based compensation	$ 1	3,482			$ (7,446)	(3,963)
Share-based compensation, shares	117				55
Ending Balance at Mar. 31, 2024	$ 541	325,994	(113)	2,312,722	$ (1,879,697)	759,447
Ending Balance ( In shares ) at Mar. 31, 2024	54,087
Ending Balance, treasury shares at Mar. 31, 2024					24,248
Beginning Balance at Dec. 31, 2023	$ 540	322,512	(57)	2,244,712	$ (1,849,693)	$ 718,014
Beginning Balance ( In Shares) at Dec. 31, 2023	53,970
Beginning Balance, treasury shares at Dec. 31, 2023					24,017	24,017
Comprehensive income						$ 102,819
Ending Balance at Jun. 30, 2024	$ 541	329,990	(126)	2,347,600	$ (1,918,810)	$ 759,195
Ending Balance ( In shares ) at Jun. 30, 2024	54,090
Ending Balance, treasury shares at Jun. 30, 2024					24,541	24,541
Beginning Balance at Mar. 31, 2024	$ 541	325,994	(113)	2,312,722	$ (1,879,697)	$ 759,447
Beginning Balance ( In Shares) at Mar. 31, 2024	54,087
Beginning Balance, treasury shares at Mar. 31, 2024					24,248
Comprehensive income			(13)	34,878		34,865
Common stock purchased for treasury					$ (39,113)	(39,113)
Common stock acquired, shares					281
Restricted shares forfeited, shares					12
Share-based compensation		3,996				3,996
Share-based compensation, shares	3
Ending Balance at Jun. 30, 2024	$ 541	$ 329,990	$ (126)	$ 2,347,600	$ (1,918,810)	$ 759,195
Ending Balance ( In shares ) at Jun. 30, 2024	54,090
Ending Balance, treasury shares at Jun. 30, 2024					24,541	24,541