CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Deferred Stock	Retained Earnings	Accumulated Other Comprehensive (Loss) Income	Treasury Stock
Balance beginning of period (in shares) at Dec. 31, 2022		107,193
Balance beginning of period at Dec. 31, 2022	$ 608,737	$ 10,719	$ 1,463,215	$ 5,182	$ 3,599,529	$ (77,796)	$ (4,392,112)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	214,054				214,054
Other comprehensive (loss) income, net of tax	1,181					1,181
Repurchases of common stock, net	(9,554)						(9,554)
Common stock issued under stock plans, including excess tax benefit (in shares)		128
Common stock issued under stock plans, including excess tax benefit	12,753	$ 13	12,765	(25)
Share-based compensation cost	13,930		13,923	7
Balance end of period (in shares) at Mar. 31, 2023		107,321
Balance end of period at Mar. 31, 2023	$ 841,101	$ 10,732	1,489,903	5,164	3,813,583	(76,615)	(4,401,666)
Balance beginning of period (in shares) at Dec. 31, 2023	107,506	107,506
Balance beginning of period at Dec. 31, 2023	$ 1,484,530	$ 10,751	1,569,565	5,530	4,444,571	(71,206)	(4,474,681)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	235,579				235,579
Other comprehensive (loss) income, net of tax	(9,191)					(9,191)
Repurchases of common stock, net	(177,192)						(177,192)
Common stock issued under stock plans, including excess tax benefit (in shares)		161
Common stock issued under stock plans, including excess tax benefit	20,780	$ 16	20,792	(28)
Share-based compensation cost	$ 14,400		14,392	8
Balance end of period (in shares) at Mar. 31, 2024	107,667	107,667
Balance end of period at Mar. 31, 2024	$ 1,568,906	$ 10,767	$ 1,604,749	$ 5,510	$ 4,680,150	$ (80,397)	$ (4,651,873)